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Diffstat (limited to 'vendor/github.com/spf13')
37 files changed, 6546 insertions, 0 deletions
diff --git a/vendor/github.com/spf13/cast/LICENSE b/vendor/github.com/spf13/cast/LICENSE new file mode 100644 index 0000000..4527efb --- /dev/null +++ b/vendor/github.com/spf13/cast/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2014 Steve Francia + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE.
\ No newline at end of file diff --git a/vendor/github.com/spf13/cast/README.md b/vendor/github.com/spf13/cast/README.md new file mode 100644 index 0000000..af7a1fd --- /dev/null +++ b/vendor/github.com/spf13/cast/README.md @@ -0,0 +1,72 @@ +cast +==== + +Easy and safe casting from one type to another in Go + +Don’t Panic! ... Cast + +## What is Cast? + +Cast is a library to convert between different go types in a consistent and easy way. + +Cast provides simple functions to easily convert a number to a string, an +interface into a bool, etc. Cast does this intelligently when an obvious +conversion is possible. It doesn’t make any attempts to guess what you meant, +for example you can only convert a string to an int when it is a string +representation of an int such as “8”. Cast was developed for use in +[Hugo](http://hugo.spf13.com), a website engine which uses YAML, TOML or JSON +for meta data. + +## Why use Cast? + +When working with dynamic data in Go you often need to cast or convert the data +from one type into another. Cast goes beyond just using type assertion (though +it uses that when possible) to provide a very straightforward and convenient +library. + +If you are working with interfaces to handle things like dynamic content +you’ll need an easy way to convert an interface into a given type. This +is the library for you. + +If you are taking in data from YAML, TOML or JSON or other formats which lack +full types, then Cast is the library for you. + +## Usage + +Cast provides a handful of To_____ methods. These methods will always return +the desired type. **If input is provided that will not convert to that type, the +0 or nil value for that type will be returned**. + +Cast also provides identical methods To_____E. These return the same result as +the To_____ methods, plus an additional error which tells you if it successfully +converted. Using these methods you can tell the difference between when the +input matched the zero value or when the conversion failed and the zero value +was returned. + +The following examples are merely a sample of what is available. Please review +the code for a complete set. + +### Example ‘ToString’: + + cast.ToString("mayonegg") // "mayonegg" + cast.ToString(8) // "8" + cast.ToString(8.31) // "8.31" + cast.ToString([]byte("one time")) // "one time" + cast.ToString(nil) // "" + + var foo interface{} = "one more time" + cast.ToString(foo) // "one more time" + + +### Example ‘ToInt’: + + cast.ToInt(8) // 8 + cast.ToInt(8.31) // 8 + cast.ToInt("8") // 8 + cast.ToInt(true) // 1 + cast.ToInt(false) // 0 + + var eight interface{} = 8 + cast.ToInt(eight) // 8 + cast.ToInt(nil) // 0 + diff --git a/vendor/github.com/spf13/cast/cast.go b/vendor/github.com/spf13/cast/cast.go new file mode 100644 index 0000000..de5a686 --- /dev/null +++ b/vendor/github.com/spf13/cast/cast.go @@ -0,0 +1,78 @@ +// Copyright © 2014 Steve Francia <spf@spf13.com>. +// +// Use of this source code is governed by an MIT-style +// license that can be found in the LICENSE file. + +package cast + +import "time" + +func ToBool(i interface{}) bool { + v, _ := ToBoolE(i) + return v +} + +func ToTime(i interface{}) time.Time { + v, _ := ToTimeE(i) + return v +} + +func ToDuration(i interface{}) time.Duration { + v, _ := ToDurationE(i) + return v +} + +func ToFloat64(i interface{}) float64 { + v, _ := ToFloat64E(i) + return v +} + +func ToInt64(i interface{}) int64 { + v, _ := ToInt64E(i) + return v +} + +func ToInt(i interface{}) int { + v, _ := ToIntE(i) + return v +} + +func ToString(i interface{}) string { + v, _ := ToStringE(i) + return v +} + +func ToStringMapString(i interface{}) map[string]string { + v, _ := ToStringMapStringE(i) + return v +} + +func ToStringMapStringSlice(i interface{}) map[string][]string { + v, _ := ToStringMapStringSliceE(i) + return v +} + +func ToStringMapBool(i interface{}) map[string]bool { + v, _ := ToStringMapBoolE(i) + return v +} + +func ToStringMap(i interface{}) map[string]interface{} { + v, _ := ToStringMapE(i) + return v +} + +func ToSlice(i interface{}) []interface{} { + v, _ := ToSliceE(i) + return v +} + +func ToStringSlice(i interface{}) []string { + v, _ := ToStringSliceE(i) + return v +} + +func ToIntSlice(i interface{}) []int { + v, _ := ToIntSliceE(i) + return v +} diff --git a/vendor/github.com/spf13/cast/caste.go b/vendor/github.com/spf13/cast/caste.go new file mode 100644 index 0000000..2377896 --- /dev/null +++ b/vendor/github.com/spf13/cast/caste.go @@ -0,0 +1,500 @@ +// Copyright © 2014 Steve Francia <spf@spf13.com>. +// +// Use of this source code is governed by an MIT-style +// license that can be found in the LICENSE file. + +package cast + +import ( + "fmt" + "html/template" + "reflect" + "strconv" + "strings" + "time" + + jww "github.com/spf13/jwalterweatherman" +) + +// ToTimeE casts an empty interface to time.Time. +func ToTimeE(i interface{}) (tim time.Time, err error) { + i = indirect(i) + jww.DEBUG.Println("ToTimeE called on type:", reflect.TypeOf(i)) + + switch s := i.(type) { + case time.Time: + return s, nil + case string: + d, e := StringToDate(s) + if e == nil { + return d, nil + } + return time.Time{}, fmt.Errorf("Could not parse Date/Time format: %v\n", e) + default: + return time.Time{}, fmt.Errorf("Unable to Cast %#v to Time\n", i) + } +} + +// ToDurationE casts an empty interface to time.Duration. +func ToDurationE(i interface{}) (d time.Duration, err error) { + i = indirect(i) + jww.DEBUG.Println("ToDurationE called on type:", reflect.TypeOf(i)) + + switch s := i.(type) { + case time.Duration: + return s, nil + case int64: + d = time.Duration(s) + return + case float64: + d = time.Duration(s) + return + case string: + d, err = time.ParseDuration(s) + return + default: + err = fmt.Errorf("Unable to Cast %#v to Duration\n", i) + return + } +} + +// ToBoolE casts an empty interface to a bool. +func ToBoolE(i interface{}) (bool, error) { + i = indirect(i) + jww.DEBUG.Println("ToBoolE called on type:", reflect.TypeOf(i)) + + switch b := i.(type) { + case bool: + return b, nil + case nil: + return false, nil + case int: + if i.(int) != 0 { + return true, nil + } + return false, nil + case string: + return strconv.ParseBool(i.(string)) + default: + return false, fmt.Errorf("Unable to Cast %#v to bool", i) + } +} + +// ToFloat64E casts an empty interface to a float64. +func ToFloat64E(i interface{}) (float64, error) { + i = indirect(i) + jww.DEBUG.Println("ToFloat64E called on type:", reflect.TypeOf(i)) + + switch s := i.(type) { + case float64: + return s, nil + case float32: + return float64(s), nil + case int64: + return float64(s), nil + case int32: + return float64(s), nil + case int16: + return float64(s), nil + case int8: + return float64(s), nil + case int: + return float64(s), nil + case string: + v, err := strconv.ParseFloat(s, 64) + if err == nil { + return float64(v), nil + } + return 0.0, fmt.Errorf("Unable to Cast %#v to float", i) + default: + return 0.0, fmt.Errorf("Unable to Cast %#v to float", i) + } +} + +// ToInt64E casts an empty interface to an int64. +func ToInt64E(i interface{}) (int64, error) { + i = indirect(i) + jww.DEBUG.Println("ToInt64E called on type:", reflect.TypeOf(i)) + + switch s := i.(type) { + case int64: + return s, nil + case int: + return int64(s), nil + case int32: + return int64(s), nil + case int16: + return int64(s), nil + case int8: + return int64(s), nil + case string: + v, err := strconv.ParseInt(s, 0, 0) + if err == nil { + return v, nil + } + return 0, fmt.Errorf("Unable to Cast %#v to int64", i) + case float64: + return int64(s), nil + case bool: + if bool(s) { + return int64(1), nil + } + return int64(0), nil + case nil: + return int64(0), nil + default: + return int64(0), fmt.Errorf("Unable to Cast %#v to int64", i) + } +} + +// ToIntE casts an empty interface to an int. +func ToIntE(i interface{}) (int, error) { + i = indirect(i) + jww.DEBUG.Println("ToIntE called on type:", reflect.TypeOf(i)) + + switch s := i.(type) { + case int: + return s, nil + case int64: + return int(s), nil + case int32: + return int(s), nil + case int16: + return int(s), nil + case int8: + return int(s), nil + case string: + v, err := strconv.ParseInt(s, 0, 0) + if err == nil { + return int(v), nil + } + return 0, fmt.Errorf("Unable to Cast %#v to int", i) + case float64: + return int(s), nil + case bool: + if bool(s) { + return 1, nil + } + return 0, nil + case nil: + return 0, nil + default: + return 0, fmt.Errorf("Unable to Cast %#v to int", i) + } +} + +// From html/template/content.go +// Copyright 2011 The Go Authors. All rights reserved. +// indirect returns the value, after dereferencing as many times +// as necessary to reach the base type (or nil). +func indirect(a interface{}) interface{} { + if a == nil { + return nil + } + if t := reflect.TypeOf(a); t.Kind() != reflect.Ptr { + // Avoid creating a reflect.Value if it's not a pointer. + return a + } + v := reflect.ValueOf(a) + for v.Kind() == reflect.Ptr && !v.IsNil() { + v = v.Elem() + } + return v.Interface() +} + +// From html/template/content.go +// Copyright 2011 The Go Authors. All rights reserved. +// indirectToStringerOrError returns the value, after dereferencing as many times +// as necessary to reach the base type (or nil) or an implementation of fmt.Stringer +// or error, +func indirectToStringerOrError(a interface{}) interface{} { + if a == nil { + return nil + } + + var errorType = reflect.TypeOf((*error)(nil)).Elem() + var fmtStringerType = reflect.TypeOf((*fmt.Stringer)(nil)).Elem() + + v := reflect.ValueOf(a) + for !v.Type().Implements(fmtStringerType) && !v.Type().Implements(errorType) && v.Kind() == reflect.Ptr && !v.IsNil() { + v = v.Elem() + } + return v.Interface() +} + +// ToStringE casts an empty interface to a string. +func ToStringE(i interface{}) (string, error) { + i = indirectToStringerOrError(i) + jww.DEBUG.Println("ToStringE called on type:", reflect.TypeOf(i)) + + switch s := i.(type) { + case string: + return s, nil + case bool: + return strconv.FormatBool(s), nil + case float64: + return strconv.FormatFloat(i.(float64), 'f', -1, 64), nil + case int64: + return strconv.FormatInt(i.(int64), 10), nil + case int: + return strconv.FormatInt(int64(i.(int)), 10), nil + case []byte: + return string(s), nil + case template.HTML: + return string(s), nil + case template.URL: + return string(s), nil + case template.JS: + return string(s), nil + case template.CSS: + return string(s), nil + case template.HTMLAttr: + return string(s), nil + case nil: + return "", nil + case fmt.Stringer: + return s.String(), nil + case error: + return s.Error(), nil + default: + return "", fmt.Errorf("Unable to Cast %#v to string", i) + } +} + +// ToStringMapStringE casts an empty interface to a map[string]string. +func ToStringMapStringE(i interface{}) (map[string]string, error) { + jww.DEBUG.Println("ToStringMapStringE called on type:", reflect.TypeOf(i)) + + var m = map[string]string{} + + switch v := i.(type) { + case map[string]string: + return v, nil + case map[string]interface{}: + for k, val := range v { + m[ToString(k)] = ToString(val) + } + return m, nil + case map[interface{}]string: + for k, val := range v { + m[ToString(k)] = ToString(val) + } + return m, nil + case map[interface{}]interface{}: + for k, val := range v { + m[ToString(k)] = ToString(val) + } + return m, nil + default: + return m, fmt.Errorf("Unable to Cast %#v to map[string]string", i) + } +} + +// ToStringMapStringSliceE casts an empty interface to a map[string][]string. +func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) { + jww.DEBUG.Println("ToStringMapStringSliceE called on type:", reflect.TypeOf(i)) + + var m = map[string][]string{} + + switch v := i.(type) { + case map[string][]string: + return v, nil + case map[string][]interface{}: + for k, val := range v { + m[ToString(k)] = ToStringSlice(val) + } + return m, nil + case map[string]string: + for k, val := range v { + m[ToString(k)] = []string{val} + } + case map[string]interface{}: + for k, val := range v { + m[ToString(k)] = []string{ToString(val)} + } + return m, nil + case map[interface{}][]string: + for k, val := range v { + m[ToString(k)] = ToStringSlice(val) + } + return m, nil + case map[interface{}]string: + for k, val := range v { + m[ToString(k)] = ToStringSlice(val) + } + return m, nil + case map[interface{}][]interface{}: + for k, val := range v { + m[ToString(k)] = ToStringSlice(val) + } + return m, nil + case map[interface{}]interface{}: + for k, val := range v { + key, err := ToStringE(k) + if err != nil { + return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i) + } + value, err := ToStringSliceE(val) + if err != nil { + return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i) + } + m[key] = value + } + default: + return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i) + } + return m, nil +} + +// ToStringMapBoolE casts an empty interface to a map[string]bool. +func ToStringMapBoolE(i interface{}) (map[string]bool, error) { + jww.DEBUG.Println("ToStringMapBoolE called on type:", reflect.TypeOf(i)) + + var m = map[string]bool{} + + switch v := i.(type) { + case map[interface{}]interface{}: + for k, val := range v { + m[ToString(k)] = ToBool(val) + } + return m, nil + case map[string]interface{}: + for k, val := range v { + m[ToString(k)] = ToBool(val) + } + return m, nil + case map[string]bool: + return v, nil + default: + return m, fmt.Errorf("Unable to Cast %#v to map[string]bool", i) + } +} + +// ToStringMapE casts an empty interface to a map[string]interface{}. +func ToStringMapE(i interface{}) (map[string]interface{}, error) { + jww.DEBUG.Println("ToStringMapE called on type:", reflect.TypeOf(i)) + + var m = map[string]interface{}{} + + switch v := i.(type) { + case map[interface{}]interface{}: + for k, val := range v { + m[ToString(k)] = val + } + return m, nil + case map[string]interface{}: + return v, nil + default: + return m, fmt.Errorf("Unable to Cast %#v to map[string]interface{}", i) + } +} + +// ToSliceE casts an empty interface to a []interface{}. +func ToSliceE(i interface{}) ([]interface{}, error) { + jww.DEBUG.Println("ToSliceE called on type:", reflect.TypeOf(i)) + + var s []interface{} + + switch v := i.(type) { + case []interface{}: + for _, u := range v { + s = append(s, u) + } + return s, nil + case []map[string]interface{}: + for _, u := range v { + s = append(s, u) + } + return s, nil + default: + return s, fmt.Errorf("Unable to Cast %#v of type %v to []interface{}", i, reflect.TypeOf(i)) + } +} + +// ToStringSliceE casts an empty interface to a []string. +func ToStringSliceE(i interface{}) ([]string, error) { + jww.DEBUG.Println("ToStringSliceE called on type:", reflect.TypeOf(i)) + + var a []string + + switch v := i.(type) { + case []interface{}: + for _, u := range v { + a = append(a, ToString(u)) + } + return a, nil + case []string: + return v, nil + case string: + return strings.Fields(v), nil + case interface{}: + str, err := ToStringE(v) + if err != nil { + return a, fmt.Errorf("Unable to Cast %#v to []string", i) + } + return []string{str}, nil + default: + return a, fmt.Errorf("Unable to Cast %#v to []string", i) + } +} + +// ToIntSliceE casts an empty interface to a []int. +func ToIntSliceE(i interface{}) ([]int, error) { + jww.DEBUG.Println("ToIntSliceE called on type:", reflect.TypeOf(i)) + + if i == nil { + return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i) + } + + switch v := i.(type) { + case []int: + return v, nil + } + + kind := reflect.TypeOf(i).Kind() + switch kind { + case reflect.Slice, reflect.Array: + s := reflect.ValueOf(i) + a := make([]int, s.Len()) + for j := 0; j < s.Len(); j++ { + val, err := ToIntE(s.Index(j).Interface()) + if err != nil { + return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i) + } + a[j] = val + } + return a, nil + default: + return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i) + } +} + +// StringToDate casts an empty interface to a time.Time. +func StringToDate(s string) (time.Time, error) { + return parseDateWith(s, []string{ + time.RFC3339, + "2006-01-02T15:04:05", // iso8601 without timezone + time.RFC1123Z, + time.RFC1123, + time.RFC822Z, + time.RFC822, + time.ANSIC, + time.UnixDate, + time.RubyDate, + "2006-01-02 15:04:05Z07:00", + "02 Jan 06 15:04 MST", + "2006-01-02", + "02 Jan 2006", + "2006-01-02 15:04:05 -07:00", + "2006-01-02 15:04:05 -0700", + }) +} + +func parseDateWith(s string, dates []string) (d time.Time, e error) { + for _, dateType := range dates { + if d, e = time.Parse(dateType, s); e == nil { + return + } + } + return d, fmt.Errorf("Unable to parse date: %s", s) +} diff --git a/vendor/github.com/spf13/jwalterweatherman/LICENSE b/vendor/github.com/spf13/jwalterweatherman/LICENSE new file mode 100644 index 0000000..4527efb --- /dev/null +++ b/vendor/github.com/spf13/jwalterweatherman/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2014 Steve Francia + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE.
\ No newline at end of file diff --git a/vendor/github.com/spf13/jwalterweatherman/README.md b/vendor/github.com/spf13/jwalterweatherman/README.md new file mode 100644 index 0000000..c6f327c --- /dev/null +++ b/vendor/github.com/spf13/jwalterweatherman/README.md @@ -0,0 +1,161 @@ +jWalterWeatherman +================= + +Seamless printing to the terminal (stdout) and logging to a io.Writer +(file) that’s as easy to use as fmt.Println. + + +Graphic by [JonnyEtc](http://jonnyetc.deviantart.com/art/And-That-s-Why-You-Always-Leave-a-Note-315311422) + +JWW is primarily a wrapper around the excellent standard log library. It +provides a few advantages over using the standard log library alone. + +1. Ready to go out of the box. +2. One library for both printing to the terminal and logging (to files). +3. Really easy to log to either a temp file or a file you specify. + + +I really wanted a very straightforward library that could seamlessly do +the following things. + +1. Replace all the println, printf, etc statements thought my code with + something more useful +2. Allow the user to easily control what levels are printed to stdout +3. Allow the user to easily control what levels are logged +4. Provide an easy mechanism (like fmt.Println) to print info to the user + which can be easily logged as well +5. Due to 2 & 3 provide easy verbose mode for output and logs +6. Not have any unnecessary initialization cruft. Just use it. + +# Usage + +## Step 1. Use it +Put calls throughout your source based on type of feedback. +No initialization or setup needs to happen. Just start calling things. + +Available Loggers are: + + * TRACE + * DEBUG + * INFO + * WARN + * ERROR + * CRITICAL + * FATAL + +These each are loggers based on the log standard library and follow the +standard usage. Eg.. + +```go + import ( + jww "github.com/spf13/jwalterweatherman" + ) + + ... + + if err != nil { + + // This is a pretty serious error and the user should know about + // it. It will be printed to the terminal as well as logged under the + // default thresholds. + + jww.ERROR.Println(err) + } + + if err2 != nil { + // This error isn’t going to materially change the behavior of the + // application, but it’s something that may not be what the user + // expects. Under the default thresholds, Warn will be logged, but + // not printed to the terminal. + + jww.WARN.Println(err2) + } + + // Information that’s relevant to what’s happening, but not very + // important for the user. Under the default thresholds this will be + // discarded. + + jww.INFO.Printf("information %q", response) + +``` + +_Why 7 levels?_ + +Maybe you think that 7 levels are too much for any application... and you +are probably correct. Just because there are seven levels doesn’t mean +that you should be using all 7 levels. Pick the right set for your needs. +Remember they only have to mean something to your project. + +## Step 2. Optionally configure JWW + +Under the default thresholds : + + * Debug, Trace & Info goto /dev/null + * Warn and above is logged (when a log file/io.Writer is provided) + * Error and above is printed to the terminal (stdout) + +### Changing the thresholds + +The threshold can be changed at any time, but will only affect calls that +execute after the change was made. + +This is very useful if your application has a verbose mode. Of course you +can decide what verbose means to you or even have multiple levels of +verbosity. + + +```go + import ( + jww "github.com/spf13/jwalterweatherman" + ) + + if Verbose { + jww.SetLogThreshold(jww.LevelTrace) + jww.SetStdoutThreshold(jww.LevelInfo) + } +``` + +Note that JWW's own internal output uses log levels as well, so set the log +level before making any other calls if you want to see what it's up to. + +### Using a temp log file + +JWW conveniently creates a temporary file and sets the log Handle to +a io.Writer created for it. You should call this early in your application +initialization routine as it will only log calls made after it is executed. +When this option is used, the library will fmt.Println where to find the +log file. + +```go + import ( + jww "github.com/spf13/jwalterweatherman" + ) + + jww.UseTempLogFile("YourAppName") + +``` + +### Setting a log file + +JWW can log to any file you provide a path to (provided it’s writable). +Will only append to this file. + + +```go + import ( + jww "github.com/spf13/jwalterweatherman" + ) + + jww.SetLogFile("/path/to/logfile") + +``` + + +# More information + +This is an early release. I’ve been using it for a while and this is the +third interface I’ve tried. I like this one pretty well, but no guarantees +that it won’t change a bit. + +I wrote this for use in [hugo](http://hugo.spf13.com). If you are looking +for a static website engine that’s super fast please checkout Hugo. diff --git a/vendor/github.com/spf13/jwalterweatherman/thatswhyyoualwaysleaveanote.go b/vendor/github.com/spf13/jwalterweatherman/thatswhyyoualwaysleaveanote.go new file mode 100644 index 0000000..b64ed46 --- /dev/null +++ b/vendor/github.com/spf13/jwalterweatherman/thatswhyyoualwaysleaveanote.go @@ -0,0 +1,256 @@ +// Copyright © 2016 Steve Francia <spf@spf13.com>. +// +// Use of this source code is governed by an MIT-style +// license that can be found in the LICENSE file. + +package jwalterweatherman + +import ( + "fmt" + "io" + "io/ioutil" + "log" + "os" + "sync/atomic" +) + +// Level describes the chosen log level between +// debug and critical. +type Level int + +type NotePad struct { + Handle io.Writer + Level Level + Prefix string + Logger **log.Logger + counter uint64 +} + +func (n *NotePad) incr() { + atomic.AddUint64(&n.counter, 1) +} + +func (n *NotePad) resetCounter() { + atomic.StoreUint64(&n.counter, 0) +} + +func (n *NotePad) getCount() uint64 { + return atomic.LoadUint64(&n.counter) +} + +type countingWriter struct { + incrFunc func() +} + +func (cw *countingWriter) Write(p []byte) (n int, err error) { + cw.incrFunc() + + return 0, nil +} + +// Feedback is special. It writes plainly to the output while +// logging with the standard extra information (date, file, etc) +// Only Println and Printf are currently provided for this +type Feedback struct{} + +const ( + LevelTrace Level = iota + LevelDebug + LevelInfo + LevelWarn + LevelError + LevelCritical + LevelFatal + DefaultLogThreshold = LevelWarn + DefaultStdoutThreshold = LevelError +) + +var ( + TRACE *log.Logger + DEBUG *log.Logger + INFO *log.Logger + WARN *log.Logger + ERROR *log.Logger + CRITICAL *log.Logger + FATAL *log.Logger + LOG *log.Logger + FEEDBACK Feedback + LogHandle io.Writer = ioutil.Discard + OutHandle io.Writer = os.Stdout + BothHandle io.Writer = io.MultiWriter(LogHandle, OutHandle) + NotePads []*NotePad = []*NotePad{trace, debug, info, warn, err, critical, fatal} + + trace *NotePad = &NotePad{Level: LevelTrace, Handle: os.Stdout, Logger: &TRACE, Prefix: "TRACE: "} + debug *NotePad = &NotePad{Level: LevelDebug, Handle: os.Stdout, Logger: &DEBUG, Prefix: "DEBUG: "} + info *NotePad = &NotePad{Level: LevelInfo, Handle: os.Stdout, Logger: &INFO, Prefix: "INFO: "} + warn *NotePad = &NotePad{Level: LevelWarn, Handle: os.Stdout, Logger: &WARN, Prefix: "WARN: "} + err *NotePad = &NotePad{Level: LevelError, Handle: os.Stdout, Logger: &ERROR, Prefix: "ERROR: "} + critical *NotePad = &NotePad{Level: LevelCritical, Handle: os.Stdout, Logger: &CRITICAL, Prefix: "CRITICAL: "} + fatal *NotePad = &NotePad{Level: LevelFatal, Handle: os.Stdout, Logger: &FATAL, Prefix: "FATAL: "} + logThreshold Level = DefaultLogThreshold + outputThreshold Level = DefaultStdoutThreshold +) + +const ( + DATE = log.Ldate + TIME = log.Ltime + SFILE = log.Lshortfile + LFILE = log.Llongfile + MSEC = log.Lmicroseconds +) + +var logFlags = DATE | TIME | SFILE + +func init() { + SetStdoutThreshold(DefaultStdoutThreshold) +} + +// initialize will setup the jWalterWeatherman standard approach of providing the user +// some feedback and logging a potentially different amount based on independent log and output thresholds. +// By default the output has a lower threshold than logged +// Don't use if you have manually set the Handles of the different levels as it will overwrite them. +func initialize() { + BothHandle = io.MultiWriter(LogHandle, OutHandle) + + for _, n := range NotePads { + if n.Level < outputThreshold && n.Level < logThreshold { + n.Handle = ioutil.Discard + } else if n.Level >= outputThreshold && n.Level >= logThreshold { + n.Handle = BothHandle + } else if n.Level >= outputThreshold && n.Level < logThreshold { + n.Handle = OutHandle + } else { + n.Handle = LogHandle + } + } + + for _, n := range NotePads { + n.Handle = io.MultiWriter(n.Handle, &countingWriter{n.incr}) + *n.Logger = log.New(n.Handle, n.Prefix, logFlags) + } + + LOG = log.New(LogHandle, + "LOG: ", + logFlags) +} + +// Set the log Flags (Available flag: DATE, TIME, SFILE, LFILE and MSEC) +func SetLogFlag(flags int) { + logFlags = flags + initialize() +} + +// Level returns the current global log threshold. +func LogThreshold() Level { + return logThreshold +} + +// Level returns the current global output threshold. +func StdoutThreshold() Level { + return outputThreshold +} + +// Ensures that the level provided is within the bounds of available levels +func levelCheck(level Level) Level { + switch { + case level <= LevelTrace: + return LevelTrace + case level >= LevelFatal: + return LevelFatal + default: + return level + } +} + +// Establishes a threshold where anything matching or above will be logged +func SetLogThreshold(level Level) { + logThreshold = levelCheck(level) + initialize() +} + +// Establishes a threshold where anything matching or above will be output +func SetStdoutThreshold(level Level) { + outputThreshold = levelCheck(level) + initialize() +} + +// Conveniently Sets the Log Handle to a io.writer created for the file behind the given filepath +// Will only append to this file +func SetLogFile(path string) { + file, err := os.OpenFile(path, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666) + if err != nil { + CRITICAL.Println("Failed to open log file:", path, err) + os.Exit(-1) + } + + INFO.Println("Logging to", file.Name()) + + LogHandle = file + initialize() +} + +// Conveniently Creates a temporary file and sets the Log Handle to a io.writer created for it +func UseTempLogFile(prefix string) { + file, err := ioutil.TempFile(os.TempDir(), prefix) + if err != nil { + CRITICAL.Println(err) + } + + INFO.Println("Logging to", file.Name()) + + LogHandle = file + initialize() +} + +// LogCountForLevel returns the number of log invocations for a given level. +func LogCountForLevel(l Level) uint64 { + for _, np := range NotePads { + if np.Level == l { + return np.getCount() + } + } + return 0 +} + +// LogCountForLevelsGreaterThanorEqualTo returns the number of log invocations +// greater than or equal to a given level threshold. +func LogCountForLevelsGreaterThanorEqualTo(threshold Level) uint64 { + var cnt uint64 + for _, np := range NotePads { + if np.Level >= threshold { + cnt += np.getCount() + } + } + return cnt +} + +// ResetLogCounters resets the invocation counters for all levels. +func ResetLogCounters() { + for _, np := range NotePads { + np.resetCounter() + } +} + +// Disables logging for the entire JWW system +func DiscardLogging() { + LogHandle = ioutil.Discard + initialize() +} + +// Feedback is special. It writes plainly to the output while +// logging with the standard extra information (date, file, etc) +// Only Println and Printf are currently provided for this +func (fb *Feedback) Println(v ...interface{}) { + s := fmt.Sprintln(v...) + fmt.Print(s) + LOG.Output(2, s) +} + +// Feedback is special. It writes plainly to the output while +// logging with the standard extra information (date, file, etc) +// Only Println and Printf are currently provided for this +func (fb *Feedback) Printf(format string, v ...interface{}) { + s := fmt.Sprintf(format, v...) + fmt.Print(s) + LOG.Output(2, s) +} diff --git a/vendor/github.com/spf13/pflag/LICENSE b/vendor/github.com/spf13/pflag/LICENSE new file mode 100644 index 0000000..63ed1cf --- /dev/null +++ b/vendor/github.com/spf13/pflag/LICENSE @@ -0,0 +1,28 @@ +Copyright (c) 2012 Alex Ogier. All rights reserved. +Copyright (c) 2012 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/spf13/pflag/README.md b/vendor/github.com/spf13/pflag/README.md new file mode 100644 index 0000000..0bafd38 --- /dev/null +++ b/vendor/github.com/spf13/pflag/README.md @@ -0,0 +1,256 @@ +[](https://travis-ci.org/spf13/pflag) + +## Description + +pflag is a drop-in replacement for Go's flag package, implementing +POSIX/GNU-style --flags. + +pflag is compatible with the [GNU extensions to the POSIX recommendations +for command-line options][1]. For a more precise description, see the +"Command-line flag syntax" section below. + +[1]: http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html + +pflag is available under the same style of BSD license as the Go language, +which can be found in the LICENSE file. + +## Installation + +pflag is available using the standard `go get` command. + +Install by running: + + go get github.com/spf13/pflag + +Run tests by running: + + go test github.com/spf13/pflag + +## Usage + +pflag is a drop-in replacement of Go's native flag package. If you import +pflag under the name "flag" then all code should continue to function +with no changes. + +``` go +import flag "github.com/spf13/pflag" +``` + +There is one exception to this: if you directly instantiate the Flag struct +there is one more field "Shorthand" that you will need to set. +Most code never instantiates this struct directly, and instead uses +functions such as String(), BoolVar(), and Var(), and is therefore +unaffected. + +Define flags using flag.String(), Bool(), Int(), etc. + +This declares an integer flag, -flagname, stored in the pointer ip, with type *int. + +``` go +var ip *int = flag.Int("flagname", 1234, "help message for flagname") +``` + +If you like, you can bind the flag to a variable using the Var() functions. + +``` go +var flagvar int +func init() { + flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname") +} +``` + +Or you can create custom flags that satisfy the Value interface (with +pointer receivers) and couple them to flag parsing by + +``` go +flag.Var(&flagVal, "name", "help message for flagname") +``` + +For such flags, the default value is just the initial value of the variable. + +After all flags are defined, call + +``` go +flag.Parse() +``` + +to parse the command line into the defined flags. + +Flags may then be used directly. If you're using the flags themselves, +they are all pointers; if you bind to variables, they're values. + +``` go +fmt.Println("ip has value ", *ip) +fmt.Println("flagvar has value ", flagvar) +``` + +There are helpers function to get values later if you have the FlagSet but +it was difficult to keep up with all of the flag pointers in your code. +If you have a pflag.FlagSet with a flag called 'flagname' of type int you +can use GetInt() to get the int value. But notice that 'flagname' must exist +and it must be an int. GetString("flagname") will fail. + +``` go +i, err := flagset.GetInt("flagname") +``` + +After parsing, the arguments after the flag are available as the +slice flag.Args() or individually as flag.Arg(i). +The arguments are indexed from 0 through flag.NArg()-1. + +The pflag package also defines some new functions that are not in flag, +that give one-letter shorthands for flags. You can use these by appending +'P' to the name of any function that defines a flag. + +``` go +var ip = flag.IntP("flagname", "f", 1234, "help message") +var flagvar bool +func init() { + flag.BoolVarP("boolname", "b", true, "help message") +} +flag.VarP(&flagVar, "varname", "v", 1234, "help message") +``` + +Shorthand letters can be used with single dashes on the command line. +Boolean shorthand flags can be combined with other shorthand flags. + +The default set of command-line flags is controlled by +top-level functions. The FlagSet type allows one to define +independent sets of flags, such as to implement subcommands +in a command-line interface. The methods of FlagSet are +analogous to the top-level functions for the command-line +flag set. + +## Setting no option default values for flags + +After you create a flag it is possible to set the pflag.NoOptDefVal for +the given flag. Doing this changes the meaning of the flag slightly. If +a flag has a NoOptDefVal and the flag is set on the command line without +an option the flag will be set to the NoOptDefVal. For example given: + +``` go +var ip = flag.IntP("flagname", "f", 1234, "help message") +flag.Lookup("flagname").NoOptDefVal = "4321" +``` + +Would result in something like + +| Parsed Arguments | Resulting Value | +| ------------- | ------------- | +| --flagname=1357 | ip=1357 | +| --flagname | ip=4321 | +| [nothing] | ip=1234 | + +## Command line flag syntax + +``` +--flag // boolean flags, or flags with no option default values +--flag x // only on flags without a default value +--flag=x +``` + +Unlike the flag package, a single dash before an option means something +different than a double dash. Single dashes signify a series of shorthand +letters for flags. All but the last shorthand letter must be boolean flags +or a flag with a default value + +``` +// boolean or flags where the 'no option default value' is set +-f +-f=true +-abc +but +-b true is INVALID + +// non-boolean and flags without a 'no option default value' +-n 1234 +-n=1234 +-n1234 + +// mixed +-abcs "hello" +-absd="hello" +-abcs1234 +``` + +Flag parsing stops after the terminator "--". Unlike the flag package, +flags can be interspersed with arguments anywhere on the command line +before this terminator. + +Integer flags accept 1234, 0664, 0x1234 and may be negative. +Boolean flags (in their long form) accept 1, 0, t, f, true, false, +TRUE, FALSE, True, False. +Duration flags accept any input valid for time.ParseDuration. + +## Mutating or "Normalizing" Flag names + +It is possible to set a custom flag name 'normalization function.' It allows flag names to be mutated both when created in the code and when used on the command line to some 'normalized' form. The 'normalized' form is used for comparison. Two examples of using the custom normalization func follow. + +**Example #1**: You want -, _, and . in flags to compare the same. aka --my-flag == --my_flag == --my.flag + +``` go +func wordSepNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName { + from := []string{"-", "_"} + to := "." + for _, sep := range from { + name = strings.Replace(name, sep, to, -1) + } + return pflag.NormalizedName(name) +} + +myFlagSet.SetNormalizeFunc(wordSepNormalizeFunc) +``` + +**Example #2**: You want to alias two flags. aka --old-flag-name == --new-flag-name + +``` go +func aliasNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName { + switch name { + case "old-flag-name": + name = "new-flag-name" + break + } + return pflag.NormalizedName(name) +} + +myFlagSet.SetNormalizeFunc(aliasNormalizeFunc) +``` + +## Deprecating a flag or its shorthand +It is possible to deprecate a flag, or just its shorthand. Deprecating a flag/shorthand hides it from help text and prints a usage message when the deprecated flag/shorthand is used. + +**Example #1**: You want to deprecate a flag named "badflag" as well as inform the users what flag they should use instead. +```go +// deprecate a flag by specifying its name and a usage message +flags.MarkDeprecated("badflag", "please use --good-flag instead") +``` +This hides "badflag" from help text, and prints `Flag --badflag has been deprecated, please use --good-flag instead` when "badflag" is used. + +**Example #2**: You want to keep a flag name "noshorthandflag" but deprecate its shortname "n". +```go +// deprecate a flag shorthand by specifying its flag name and a usage message +flags.MarkShorthandDeprecated("noshorthandflag", "please use --noshorthandflag only") +``` +This hides the shortname "n" from help text, and prints `Flag shorthand -n has been deprecated, please use --noshorthandflag only` when the shorthand "n" is used. + +Note that usage message is essential here, and it should not be empty. + +## Hidden flags +It is possible to mark a flag as hidden, meaning it will still function as normal, however will not show up in usage/help text. + +**Example**: You have a flag named "secretFlag" that you need for internal use only and don't want it showing up in help text, or for its usage text to be available. +```go +// hide a flag by specifying its name +flags.MarkHidden("secretFlag") +``` + +## More info + +You can see the full reference documentation of the pflag package +[at godoc.org][3], or through go's standard documentation system by +running `godoc -http=:6060` and browsing to +[http://localhost:6060/pkg/github.com/ogier/pflag][2] after +installation. + +[2]: http://localhost:6060/pkg/github.com/ogier/pflag +[3]: http://godoc.org/github.com/ogier/pflag diff --git a/vendor/github.com/spf13/pflag/bool.go b/vendor/github.com/spf13/pflag/bool.go new file mode 100644 index 0000000..d272e40 --- /dev/null +++ b/vendor/github.com/spf13/pflag/bool.go @@ -0,0 +1,97 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// optional interface to indicate boolean flags that can be +// supplied without "=value" text +type boolFlag interface { + Value + IsBoolFlag() bool +} + +// -- bool Value +type boolValue bool + +func newBoolValue(val bool, p *bool) *boolValue { + *p = val + return (*boolValue)(p) +} + +func (b *boolValue) Set(s string) error { + v, err := strconv.ParseBool(s) + *b = boolValue(v) + return err +} + +func (b *boolValue) Type() string { + return "bool" +} + +func (b *boolValue) String() string { return fmt.Sprintf("%v", *b) } + +func (b *boolValue) IsBoolFlag() bool { return true } + +func boolConv(sval string) (interface{}, error) { + return strconv.ParseBool(sval) +} + +// GetBool return the bool value of a flag with the given name +func (f *FlagSet) GetBool(name string) (bool, error) { + val, err := f.getFlagType(name, "bool", boolConv) + if err != nil { + return false, err + } + return val.(bool), nil +} + +// BoolVar defines a bool flag with specified name, default value, and usage string. +// The argument p points to a bool variable in which to store the value of the flag. +func (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) { + f.BoolVarP(p, name, "", value, usage) +} + +// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) BoolVarP(p *bool, name, shorthand string, value bool, usage string) { + flag := f.VarPF(newBoolValue(value, p), name, shorthand, usage) + flag.NoOptDefVal = "true" +} + +// BoolVar defines a bool flag with specified name, default value, and usage string. +// The argument p points to a bool variable in which to store the value of the flag. +func BoolVar(p *bool, name string, value bool, usage string) { + BoolVarP(p, name, "", value, usage) +} + +// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash. +func BoolVarP(p *bool, name, shorthand string, value bool, usage string) { + flag := CommandLine.VarPF(newBoolValue(value, p), name, shorthand, usage) + flag.NoOptDefVal = "true" +} + +// Bool defines a bool flag with specified name, default value, and usage string. +// The return value is the address of a bool variable that stores the value of the flag. +func (f *FlagSet) Bool(name string, value bool, usage string) *bool { + return f.BoolP(name, "", value, usage) +} + +// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) BoolP(name, shorthand string, value bool, usage string) *bool { + p := new(bool) + f.BoolVarP(p, name, shorthand, value, usage) + return p +} + +// Bool defines a bool flag with specified name, default value, and usage string. +// The return value is the address of a bool variable that stores the value of the flag. +func Bool(name string, value bool, usage string) *bool { + return BoolP(name, "", value, usage) +} + +// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash. +func BoolP(name, shorthand string, value bool, usage string) *bool { + b := CommandLine.BoolP(name, shorthand, value, usage) + return b +} diff --git a/vendor/github.com/spf13/pflag/count.go b/vendor/github.com/spf13/pflag/count.go new file mode 100644 index 0000000..7b1f142 --- /dev/null +++ b/vendor/github.com/spf13/pflag/count.go @@ -0,0 +1,97 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- count Value +type countValue int + +func newCountValue(val int, p *int) *countValue { + *p = val + return (*countValue)(p) +} + +func (i *countValue) Set(s string) error { + v, err := strconv.ParseInt(s, 0, 64) + // -1 means that no specific value was passed, so increment + if v == -1 { + *i = countValue(*i + 1) + } else { + *i = countValue(v) + } + return err +} + +func (i *countValue) Type() string { + return "count" +} + +func (i *countValue) String() string { return fmt.Sprintf("%v", *i) } + +func countConv(sval string) (interface{}, error) { + i, err := strconv.Atoi(sval) + if err != nil { + return nil, err + } + return i, nil +} + +// GetCount return the int value of a flag with the given name +func (f *FlagSet) GetCount(name string) (int, error) { + val, err := f.getFlagType(name, "count", countConv) + if err != nil { + return 0, err + } + return val.(int), nil +} + +// CountVar defines a count flag with specified name, default value, and usage string. +// The argument p points to an int variable in which to store the value of the flag. +// A count flag will add 1 to its value evey time it is found on the command line +func (f *FlagSet) CountVar(p *int, name string, usage string) { + f.CountVarP(p, name, "", usage) +} + +// CountVarP is like CountVar only take a shorthand for the flag name. +func (f *FlagSet) CountVarP(p *int, name, shorthand string, usage string) { + flag := f.VarPF(newCountValue(0, p), name, shorthand, usage) + flag.NoOptDefVal = "-1" +} + +// CountVar like CountVar only the flag is placed on the CommandLine instead of a given flag set +func CountVar(p *int, name string, usage string) { + CommandLine.CountVar(p, name, usage) +} + +// CountVarP is like CountVar only take a shorthand for the flag name. +func CountVarP(p *int, name, shorthand string, usage string) { + CommandLine.CountVarP(p, name, shorthand, usage) +} + +// Count defines a count flag with specified name, default value, and usage string. +// The return value is the address of an int variable that stores the value of the flag. +// A count flag will add 1 to its value evey time it is found on the command line +func (f *FlagSet) Count(name string, usage string) *int { + p := new(int) + f.CountVarP(p, name, "", usage) + return p +} + +// CountP is like Count only takes a shorthand for the flag name. +func (f *FlagSet) CountP(name, shorthand string, usage string) *int { + p := new(int) + f.CountVarP(p, name, shorthand, usage) + return p +} + +// Count like Count only the flag is placed on the CommandLine isntead of a given flag set +func Count(name string, usage string) *int { + return CommandLine.CountP(name, "", usage) +} + +// CountP is like Count only takes a shorthand for the flag name. +func CountP(name, shorthand string, usage string) *int { + return CommandLine.CountP(name, shorthand, usage) +} diff --git a/vendor/github.com/spf13/pflag/duration.go b/vendor/github.com/spf13/pflag/duration.go new file mode 100644 index 0000000..e9debef --- /dev/null +++ b/vendor/github.com/spf13/pflag/duration.go @@ -0,0 +1,86 @@ +package pflag + +import ( + "time" +) + +// -- time.Duration Value +type durationValue time.Duration + +func newDurationValue(val time.Duration, p *time.Duration) *durationValue { + *p = val + return (*durationValue)(p) +} + +func (d *durationValue) Set(s string) error { + v, err := time.ParseDuration(s) + *d = durationValue(v) + return err +} + +func (d *durationValue) Type() string { + return "duration" +} + +func (d *durationValue) String() string { return (*time.Duration)(d).String() } + +func durationConv(sval string) (interface{}, error) { + return time.ParseDuration(sval) +} + +// GetDuration return the duration value of a flag with the given name +func (f *FlagSet) GetDuration(name string) (time.Duration, error) { + val, err := f.getFlagType(name, "duration", durationConv) + if err != nil { + return 0, err + } + return val.(time.Duration), nil +} + +// DurationVar defines a time.Duration flag with specified name, default value, and usage string. +// The argument p points to a time.Duration variable in which to store the value of the flag. +func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration, usage string) { + f.VarP(newDurationValue(value, p), name, "", usage) +} + +// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) { + f.VarP(newDurationValue(value, p), name, shorthand, usage) +} + +// DurationVar defines a time.Duration flag with specified name, default value, and usage string. +// The argument p points to a time.Duration variable in which to store the value of the flag. +func DurationVar(p *time.Duration, name string, value time.Duration, usage string) { + CommandLine.VarP(newDurationValue(value, p), name, "", usage) +} + +// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash. +func DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) { + CommandLine.VarP(newDurationValue(value, p), name, shorthand, usage) +} + +// Duration defines a time.Duration flag with specified name, default value, and usage string. +// The return value is the address of a time.Duration variable that stores the value of the flag. +func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time.Duration { + p := new(time.Duration) + f.DurationVarP(p, name, "", value, usage) + return p +} + +// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration { + p := new(time.Duration) + f.DurationVarP(p, name, shorthand, value, usage) + return p +} + +// Duration defines a time.Duration flag with specified name, default value, and usage string. +// The return value is the address of a time.Duration variable that stores the value of the flag. +func Duration(name string, value time.Duration, usage string) *time.Duration { + return CommandLine.DurationP(name, "", value, usage) +} + +// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash. +func DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration { + return CommandLine.DurationP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/flag.go b/vendor/github.com/spf13/pflag/flag.go new file mode 100644 index 0000000..965df13 --- /dev/null +++ b/vendor/github.com/spf13/pflag/flag.go @@ -0,0 +1,934 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +/* +Package pflag is a drop-in replacement for Go's flag package, implementing +POSIX/GNU-style --flags. + +pflag is compatible with the GNU extensions to the POSIX recommendations +for command-line options. See +http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html + +Usage: + +pflag is a drop-in replacement of Go's native flag package. If you import +pflag under the name "flag" then all code should continue to function +with no changes. + + import flag "github.com/ogier/pflag" + + There is one exception to this: if you directly instantiate the Flag struct +there is one more field "Shorthand" that you will need to set. +Most code never instantiates this struct directly, and instead uses +functions such as String(), BoolVar(), and Var(), and is therefore +unaffected. + +Define flags using flag.String(), Bool(), Int(), etc. + +This declares an integer flag, -flagname, stored in the pointer ip, with type *int. + var ip = flag.Int("flagname", 1234, "help message for flagname") +If you like, you can bind the flag to a variable using the Var() functions. + var flagvar int + func init() { + flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname") + } +Or you can create custom flags that satisfy the Value interface (with +pointer receivers) and couple them to flag parsing by + flag.Var(&flagVal, "name", "help message for flagname") +For such flags, the default value is just the initial value of the variable. + +After all flags are defined, call + flag.Parse() +to parse the command line into the defined flags. + +Flags may then be used directly. If you're using the flags themselves, +they are all pointers; if you bind to variables, they're values. + fmt.Println("ip has value ", *ip) + fmt.Println("flagvar has value ", flagvar) + +After parsing, the arguments after the flag are available as the +slice flag.Args() or individually as flag.Arg(i). +The arguments are indexed from 0 through flag.NArg()-1. + +The pflag package also defines some new functions that are not in flag, +that give one-letter shorthands for flags. You can use these by appending +'P' to the name of any function that defines a flag. + var ip = flag.IntP("flagname", "f", 1234, "help message") + var flagvar bool + func init() { + flag.BoolVarP("boolname", "b", true, "help message") + } + flag.VarP(&flagVar, "varname", "v", 1234, "help message") +Shorthand letters can be used with single dashes on the command line. +Boolean shorthand flags can be combined with other shorthand flags. + +Command line flag syntax: + --flag // boolean flags only + --flag=x + +Unlike the flag package, a single dash before an option means something +different than a double dash. Single dashes signify a series of shorthand +letters for flags. All but the last shorthand letter must be boolean flags. + // boolean flags + -f + -abc + // non-boolean flags + -n 1234 + -Ifile + // mixed + -abcs "hello" + -abcn1234 + +Flag parsing stops after the terminator "--". Unlike the flag package, +flags can be interspersed with arguments anywhere on the command line +before this terminator. + +Integer flags accept 1234, 0664, 0x1234 and may be negative. +Boolean flags (in their long form) accept 1, 0, t, f, true, false, +TRUE, FALSE, True, False. +Duration flags accept any input valid for time.ParseDuration. + +The default set of command-line flags is controlled by +top-level functions. The FlagSet type allows one to define +independent sets of flags, such as to implement subcommands +in a command-line interface. The methods of FlagSet are +analogous to the top-level functions for the command-line +flag set. +*/ +package pflag + +import ( + "bytes" + "errors" + "fmt" + "io" + "os" + "sort" + "strings" +) + +// ErrHelp is the error returned if the flag -help is invoked but no such flag is defined. +var ErrHelp = errors.New("pflag: help requested") + +// ErrorHandling defines how to handle flag parsing errors. +type ErrorHandling int + +const ( + // ContinueOnError will return an err from Parse() if an error is found + ContinueOnError ErrorHandling = iota + // ExitOnError will call os.Exit(2) if an error is found when parsing + ExitOnError + // PanicOnError will panic() if an error is found when parsing flags + PanicOnError +) + +// NormalizedName is a flag name that has been normalized according to rules +// for the FlagSet (e.g. making '-' and '_' equivalent). +type NormalizedName string + +// A FlagSet represents a set of defined flags. +type FlagSet struct { + // Usage is the function called when an error occurs while parsing flags. + // The field is a function (not a method) that may be changed to point to + // a custom error handler. + Usage func() + + name string + parsed bool + actual map[NormalizedName]*Flag + formal map[NormalizedName]*Flag + shorthands map[byte]*Flag + args []string // arguments after flags + argsLenAtDash int // len(args) when a '--' was located when parsing, or -1 if no -- + exitOnError bool // does the program exit if there's an error? + errorHandling ErrorHandling + output io.Writer // nil means stderr; use out() accessor + interspersed bool // allow interspersed option/non-option args + normalizeNameFunc func(f *FlagSet, name string) NormalizedName +} + +// A Flag represents the state of a flag. +type Flag struct { + Name string // name as it appears on command line + Shorthand string // one-letter abbreviated flag + Usage string // help message + Value Value // value as set + DefValue string // default value (as text); for usage message + Changed bool // If the user set the value (or if left to default) + NoOptDefVal string //default value (as text); if the flag is on the command line without any options + Deprecated string // If this flag is deprecated, this string is the new or now thing to use + Hidden bool // used by cobra.Command to allow flags to be hidden from help/usage text + ShorthandDeprecated string // If the shorthand of this flag is deprecated, this string is the new or now thing to use + Annotations map[string][]string // used by cobra.Command bash autocomple code +} + +// Value is the interface to the dynamic value stored in a flag. +// (The default value is represented as a string.) +type Value interface { + String() string + Set(string) error + Type() string +} + +// sortFlags returns the flags as a slice in lexicographical sorted order. +func sortFlags(flags map[NormalizedName]*Flag) []*Flag { + list := make(sort.StringSlice, len(flags)) + i := 0 + for k := range flags { + list[i] = string(k) + i++ + } + list.Sort() + result := make([]*Flag, len(list)) + for i, name := range list { + result[i] = flags[NormalizedName(name)] + } + return result +} + +// SetNormalizeFunc allows you to add a function which can translate flag names. +// Flags added to the FlagSet will be translated and then when anything tries to +// look up the flag that will also be translated. So it would be possible to create +// a flag named "getURL" and have it translated to "geturl". A user could then pass +// "--getUrl" which may also be translated to "geturl" and everything will work. +func (f *FlagSet) SetNormalizeFunc(n func(f *FlagSet, name string) NormalizedName) { + f.normalizeNameFunc = n + for k, v := range f.formal { + delete(f.formal, k) + nname := f.normalizeFlagName(string(k)) + f.formal[nname] = v + v.Name = string(nname) + } +} + +// GetNormalizeFunc returns the previously set NormalizeFunc of a function which +// does no translation, if not set previously. +func (f *FlagSet) GetNormalizeFunc() func(f *FlagSet, name string) NormalizedName { + if f.normalizeNameFunc != nil { + return f.normalizeNameFunc + } + return func(f *FlagSet, name string) NormalizedName { return NormalizedName(name) } +} + +func (f *FlagSet) normalizeFlagName(name string) NormalizedName { + n := f.GetNormalizeFunc() + return n(f, name) +} + +func (f *FlagSet) out() io.Writer { + if f.output == nil { + return os.Stderr + } + return f.output +} + +// SetOutput sets the destination for usage and error messages. +// If output is nil, os.Stderr is used. +func (f *FlagSet) SetOutput(output io.Writer) { + f.output = output +} + +// VisitAll visits the flags in lexicographical order, calling fn for each. +// It visits all flags, even those not set. +func (f *FlagSet) VisitAll(fn func(*Flag)) { + for _, flag := range sortFlags(f.formal) { + fn(flag) + } +} + +// HasFlags returns a bool to indicate if the FlagSet has any flags definied. +func (f *FlagSet) HasFlags() bool { + return len(f.formal) > 0 +} + +// HasAvailableFlags returns a bool to indicate if the FlagSet has any flags +// definied that are not hidden or deprecated. +func (f *FlagSet) HasAvailableFlags() bool { + for _, flag := range f.formal { + if !flag.Hidden && len(flag.Deprecated) == 0 { + return true + } + } + return false +} + +// VisitAll visits the command-line flags in lexicographical order, calling +// fn for each. It visits all flags, even those not set. +func VisitAll(fn func(*Flag)) { + CommandLine.VisitAll(fn) +} + +// Visit visits the flags in lexicographical order, calling fn for each. +// It visits only those flags that have been set. +func (f *FlagSet) Visit(fn func(*Flag)) { + for _, flag := range sortFlags(f.actual) { + fn(flag) + } +} + +// Visit visits the command-line flags in lexicographical order, calling fn +// for each. It visits only those flags that have been set. +func Visit(fn func(*Flag)) { + CommandLine.Visit(fn) +} + +// Lookup returns the Flag structure of the named flag, returning nil if none exists. +func (f *FlagSet) Lookup(name string) *Flag { + return f.lookup(f.normalizeFlagName(name)) +} + +// lookup returns the Flag structure of the named flag, returning nil if none exists. +func (f *FlagSet) lookup(name NormalizedName) *Flag { + return f.formal[name] +} + +// func to return a given type for a given flag name +func (f *FlagSet) getFlagType(name string, ftype string, convFunc func(sval string) (interface{}, error)) (interface{}, error) { + flag := f.Lookup(name) + if flag == nil { + err := fmt.Errorf("flag accessed but not defined: %s", name) + return nil, err + } + + if flag.Value.Type() != ftype { + err := fmt.Errorf("trying to get %s value of flag of type %s", ftype, flag.Value.Type()) + return nil, err + } + + sval := flag.Value.String() + result, err := convFunc(sval) + if err != nil { + return nil, err + } + return result, nil +} + +// ArgsLenAtDash will return the length of f.Args at the moment when a -- was +// found during arg parsing. This allows your program to know which args were +// before the -- and which came after. +func (f *FlagSet) ArgsLenAtDash() int { + return f.argsLenAtDash +} + +// MarkDeprecated indicated that a flag is deprecated in your program. It will +// continue to function but will not show up in help or usage messages. Using +// this flag will also print the given usageMessage. +func (f *FlagSet) MarkDeprecated(name string, usageMessage string) error { + flag := f.Lookup(name) + if flag == nil { + return fmt.Errorf("flag %q does not exist", name) + } + if len(usageMessage) == 0 { + return fmt.Errorf("deprecated message for flag %q must be set", name) + } + flag.Deprecated = usageMessage + return nil +} + +// MarkShorthandDeprecated will mark the shorthand of a flag deprecated in your +// program. It will continue to function but will not show up in help or usage +// messages. Using this flag will also print the given usageMessage. +func (f *FlagSet) MarkShorthandDeprecated(name string, usageMessage string) error { + flag := f.Lookup(name) + if flag == nil { + return fmt.Errorf("flag %q does not exist", name) + } + if len(usageMessage) == 0 { + return fmt.Errorf("deprecated message for flag %q must be set", name) + } + flag.ShorthandDeprecated = usageMessage + return nil +} + +// MarkHidden sets a flag to 'hidden' in your program. It will continue to +// function but will not show up in help or usage messages. +func (f *FlagSet) MarkHidden(name string) error { + flag := f.Lookup(name) + if flag == nil { + return fmt.Errorf("flag %q does not exist", name) + } + flag.Hidden = true + return nil +} + +// Lookup returns the Flag structure of the named command-line flag, +// returning nil if none exists. +func Lookup(name string) *Flag { + return CommandLine.Lookup(name) +} + +// Set sets the value of the named flag. +func (f *FlagSet) Set(name, value string) error { + normalName := f.normalizeFlagName(name) + flag, ok := f.formal[normalName] + if !ok { + return fmt.Errorf("no such flag -%v", name) + } + err := flag.Value.Set(value) + if err != nil { + return err + } + if f.actual == nil { + f.actual = make(map[NormalizedName]*Flag) + } + f.actual[normalName] = flag + flag.Changed = true + if len(flag.Deprecated) > 0 { + fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated) + } + return nil +} + +// SetAnnotation allows one to set arbitrary annotations on a flag in the FlagSet. +// This is sometimes used by spf13/cobra programs which want to generate additional +// bash completion information. +func (f *FlagSet) SetAnnotation(name, key string, values []string) error { + normalName := f.normalizeFlagName(name) + flag, ok := f.formal[normalName] + if !ok { + return fmt.Errorf("no such flag -%v", name) + } + if flag.Annotations == nil { + flag.Annotations = map[string][]string{} + } + flag.Annotations[key] = values + return nil +} + +// Changed returns true if the flag was explicitly set during Parse() and false +// otherwise +func (f *FlagSet) Changed(name string) bool { + flag := f.Lookup(name) + // If a flag doesn't exist, it wasn't changed.... + if flag == nil { + return false + } + return flag.Changed +} + +// Set sets the value of the named command-line flag. +func Set(name, value string) error { + return CommandLine.Set(name, value) +} + +// PrintDefaults prints, to standard error unless configured +// otherwise, the default values of all defined flags in the set. +func (f *FlagSet) PrintDefaults() { + usages := f.FlagUsages() + fmt.Fprintf(f.out(), "%s", usages) +} + +// isZeroValue guesses whether the string represents the zero +// value for a flag. It is not accurate but in practice works OK. +func isZeroValue(value string) bool { + switch value { + case "false": + return true + case "<nil>": + return true + case "": + return true + case "0": + return true + } + return false +} + +// UnquoteUsage extracts a back-quoted name from the usage +// string for a flag and returns it and the un-quoted usage. +// Given "a `name` to show" it returns ("name", "a name to show"). +// If there are no back quotes, the name is an educated guess of the +// type of the flag's value, or the empty string if the flag is boolean. +func UnquoteUsage(flag *Flag) (name string, usage string) { + // Look for a back-quoted name, but avoid the strings package. + usage = flag.Usage + for i := 0; i < len(usage); i++ { + if usage[i] == '`' { + for j := i + 1; j < len(usage); j++ { + if usage[j] == '`' { + name = usage[i+1 : j] + usage = usage[:i] + name + usage[j+1:] + return name, usage + } + } + break // Only one back quote; use type name. + } + } + // No explicit name, so use type if we can find one. + name = "value" + switch flag.Value.(type) { + case boolFlag: + name = "" + case *durationValue: + name = "duration" + case *float64Value: + name = "float" + case *intValue, *int64Value: + name = "int" + case *stringValue: + name = "string" + case *uintValue, *uint64Value: + name = "uint" + } + return +} + +// FlagUsages Returns a string containing the usage information for all flags in +// the FlagSet +func (f *FlagSet) FlagUsages() string { + x := new(bytes.Buffer) + + lines := make([]string, 0, len(f.formal)) + + maxlen := 0 + f.VisitAll(func(flag *Flag) { + if len(flag.Deprecated) > 0 || flag.Hidden { + return + } + + line := "" + if len(flag.Shorthand) > 0 && len(flag.ShorthandDeprecated) == 0 { + line = fmt.Sprintf(" -%s, --%s", flag.Shorthand, flag.Name) + } else { + line = fmt.Sprintf(" --%s", flag.Name) + } + + varname, usage := UnquoteUsage(flag) + if len(varname) > 0 { + line += " " + varname + } + if len(flag.NoOptDefVal) > 0 { + switch flag.Value.Type() { + case "string": + line += fmt.Sprintf("[=%q]", flag.NoOptDefVal) + case "bool": + if flag.NoOptDefVal != "true" { + line += fmt.Sprintf("[=%s]", flag.NoOptDefVal) + } + default: + line += fmt.Sprintf("[=%s]", flag.NoOptDefVal) + } + } + + // This special character will be replaced with spacing once the + // correct alignment is calculated + line += "\x00" + if len(line) > maxlen { + maxlen = len(line) + } + + line += usage + if !isZeroValue(flag.DefValue) { + if flag.Value.Type() == "string" { + line += fmt.Sprintf(" (default %q)", flag.DefValue) + } else { + line += fmt.Sprintf(" (default %s)", flag.DefValue) + } + } + + lines = append(lines, line) + }) + + for _, line := range lines { + sidx := strings.Index(line, "\x00") + spacing := strings.Repeat(" ", maxlen-sidx) + fmt.Fprintln(x, line[:sidx], spacing, line[sidx+1:]) + } + + return x.String() +} + +// PrintDefaults prints to standard error the default values of all defined command-line flags. +func PrintDefaults() { + CommandLine.PrintDefaults() +} + +// defaultUsage is the default function to print a usage message. +func defaultUsage(f *FlagSet) { + fmt.Fprintf(f.out(), "Usage of %s:\n", f.name) + f.PrintDefaults() +} + +// NOTE: Usage is not just defaultUsage(CommandLine) +// because it serves (via godoc flag Usage) as the example +// for how to write your own usage function. + +// Usage prints to standard error a usage message documenting all defined command-line flags. +// The function is a variable that may be changed to point to a custom function. +// By default it prints a simple header and calls PrintDefaults; for details about the +// format of the output and how to control it, see the documentation for PrintDefaults. +var Usage = func() { + fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0]) + PrintDefaults() +} + +// NFlag returns the number of flags that have been set. +func (f *FlagSet) NFlag() int { return len(f.actual) } + +// NFlag returns the number of command-line flags that have been set. +func NFlag() int { return len(CommandLine.actual) } + +// Arg returns the i'th argument. Arg(0) is the first remaining argument +// after flags have been processed. +func (f *FlagSet) Arg(i int) string { + if i < 0 || i >= len(f.args) { + return "" + } + return f.args[i] +} + +// Arg returns the i'th command-line argument. Arg(0) is the first remaining argument +// after flags have been processed. +func Arg(i int) string { + return CommandLine.Arg(i) +} + +// NArg is the number of arguments remaining after flags have been processed. +func (f *FlagSet) NArg() int { return len(f.args) } + +// NArg is the number of arguments remaining after flags have been processed. +func NArg() int { return len(CommandLine.args) } + +// Args returns the non-flag arguments. +func (f *FlagSet) Args() []string { return f.args } + +// Args returns the non-flag command-line arguments. +func Args() []string { return CommandLine.args } + +// Var defines a flag with the specified name and usage string. The type and +// value of the flag are represented by the first argument, of type Value, which +// typically holds a user-defined implementation of Value. For instance, the +// caller could create a flag that turns a comma-separated string into a slice +// of strings by giving the slice the methods of Value; in particular, Set would +// decompose the comma-separated string into the slice. +func (f *FlagSet) Var(value Value, name string, usage string) { + f.VarP(value, name, "", usage) +} + +// VarPF is like VarP, but returns the flag created +func (f *FlagSet) VarPF(value Value, name, shorthand, usage string) *Flag { + // Remember the default value as a string; it won't change. + flag := &Flag{ + Name: name, + Shorthand: shorthand, + Usage: usage, + Value: value, + DefValue: value.String(), + } + f.AddFlag(flag) + return flag +} + +// VarP is like Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) VarP(value Value, name, shorthand, usage string) { + _ = f.VarPF(value, name, shorthand, usage) +} + +// AddFlag will add the flag to the FlagSet +func (f *FlagSet) AddFlag(flag *Flag) { + // Call normalizeFlagName function only once + normalizedFlagName := f.normalizeFlagName(flag.Name) + + _, alreadythere := f.formal[normalizedFlagName] + if alreadythere { + msg := fmt.Sprintf("%s flag redefined: %s", f.name, flag.Name) + fmt.Fprintln(f.out(), msg) + panic(msg) // Happens only if flags are declared with identical names + } + if f.formal == nil { + f.formal = make(map[NormalizedName]*Flag) + } + + flag.Name = string(normalizedFlagName) + f.formal[normalizedFlagName] = flag + + if len(flag.Shorthand) == 0 { + return + } + if len(flag.Shorthand) > 1 { + fmt.Fprintf(f.out(), "%s shorthand more than ASCII character: %s\n", f.name, flag.Shorthand) + panic("shorthand is more than one character") + } + if f.shorthands == nil { + f.shorthands = make(map[byte]*Flag) + } + c := flag.Shorthand[0] + old, alreadythere := f.shorthands[c] + if alreadythere { + fmt.Fprintf(f.out(), "%s shorthand reused: %q for %s already used for %s\n", f.name, c, flag.Name, old.Name) + panic("shorthand redefinition") + } + f.shorthands[c] = flag +} + +// AddFlagSet adds one FlagSet to another. If a flag is already present in f +// the flag from newSet will be ignored +func (f *FlagSet) AddFlagSet(newSet *FlagSet) { + if newSet == nil { + return + } + newSet.VisitAll(func(flag *Flag) { + if f.Lookup(flag.Name) == nil { + f.AddFlag(flag) + } + }) +} + +// Var defines a flag with the specified name and usage string. The type and +// value of the flag are represented by the first argument, of type Value, which +// typically holds a user-defined implementation of Value. For instance, the +// caller could create a flag that turns a comma-separated string into a slice +// of strings by giving the slice the methods of Value; in particular, Set would +// decompose the comma-separated string into the slice. +func Var(value Value, name string, usage string) { + CommandLine.VarP(value, name, "", usage) +} + +// VarP is like Var, but accepts a shorthand letter that can be used after a single dash. +func VarP(value Value, name, shorthand, usage string) { + CommandLine.VarP(value, name, shorthand, usage) +} + +// failf prints to standard error a formatted error and usage message and +// returns the error. +func (f *FlagSet) failf(format string, a ...interface{}) error { + err := fmt.Errorf(format, a...) + fmt.Fprintln(f.out(), err) + f.usage() + return err +} + +// usage calls the Usage method for the flag set, or the usage function if +// the flag set is CommandLine. +func (f *FlagSet) usage() { + if f == CommandLine { + Usage() + } else if f.Usage == nil { + defaultUsage(f) + } else { + f.Usage() + } +} + +func (f *FlagSet) setFlag(flag *Flag, value string, origArg string) error { + if err := flag.Value.Set(value); err != nil { + return f.failf("invalid argument %q for %s: %v", value, origArg, err) + } + // mark as visited for Visit() + if f.actual == nil { + f.actual = make(map[NormalizedName]*Flag) + } + f.actual[f.normalizeFlagName(flag.Name)] = flag + flag.Changed = true + if len(flag.Deprecated) > 0 { + fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated) + } + if len(flag.ShorthandDeprecated) > 0 && containsShorthand(origArg, flag.Shorthand) { + fmt.Fprintf(os.Stderr, "Flag shorthand -%s has been deprecated, %s\n", flag.Shorthand, flag.ShorthandDeprecated) + } + return nil +} + +func containsShorthand(arg, shorthand string) bool { + // filter out flags --<flag_name> + if strings.HasPrefix(arg, "-") { + return false + } + arg = strings.SplitN(arg, "=", 2)[0] + return strings.Contains(arg, shorthand) +} + +func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error) { + a = args + name := s[2:] + if len(name) == 0 || name[0] == '-' || name[0] == '=' { + err = f.failf("bad flag syntax: %s", s) + return + } + split := strings.SplitN(name, "=", 2) + name = split[0] + flag, alreadythere := f.formal[f.normalizeFlagName(name)] + if !alreadythere { + if name == "help" { // special case for nice help message. + f.usage() + return a, ErrHelp + } + err = f.failf("unknown flag: --%s", name) + return + } + var value string + if len(split) == 2 { + // '--flag=arg' + value = split[1] + } else if len(flag.NoOptDefVal) > 0 { + // '--flag' (arg was optional) + value = flag.NoOptDefVal + } else if len(a) > 0 { + // '--flag arg' + value = a[0] + a = a[1:] + } else { + // '--flag' (arg was required) + err = f.failf("flag needs an argument: %s", s) + return + } + err = f.setFlag(flag, value, s) + return +} + +func (f *FlagSet) parseSingleShortArg(shorthands string, args []string) (outShorts string, outArgs []string, err error) { + if strings.HasPrefix(shorthands, "test.") { + return + } + outArgs = args + outShorts = shorthands[1:] + c := shorthands[0] + + flag, alreadythere := f.shorthands[c] + if !alreadythere { + if c == 'h' { // special case for nice help message. + f.usage() + err = ErrHelp + return + } + //TODO continue on error + err = f.failf("unknown shorthand flag: %q in -%s", c, shorthands) + return + } + var value string + if len(shorthands) > 2 && shorthands[1] == '=' { + value = shorthands[2:] + outShorts = "" + } else if len(flag.NoOptDefVal) > 0 { + value = flag.NoOptDefVal + } else if len(shorthands) > 1 { + value = shorthands[1:] + outShorts = "" + } else if len(args) > 0 { + value = args[0] + outArgs = args[1:] + } else { + err = f.failf("flag needs an argument: %q in -%s", c, shorthands) + return + } + err = f.setFlag(flag, value, shorthands) + return +} + +func (f *FlagSet) parseShortArg(s string, args []string) (a []string, err error) { + a = args + shorthands := s[1:] + + for len(shorthands) > 0 { + shorthands, a, err = f.parseSingleShortArg(shorthands, args) + if err != nil { + return + } + } + + return +} + +func (f *FlagSet) parseArgs(args []string) (err error) { + for len(args) > 0 { + s := args[0] + args = args[1:] + if len(s) == 0 || s[0] != '-' || len(s) == 1 { + if !f.interspersed { + f.args = append(f.args, s) + f.args = append(f.args, args...) + return nil + } + f.args = append(f.args, s) + continue + } + + if s[1] == '-' { + if len(s) == 2 { // "--" terminates the flags + f.argsLenAtDash = len(f.args) + f.args = append(f.args, args...) + break + } + args, err = f.parseLongArg(s, args) + } else { + args, err = f.parseShortArg(s, args) + } + if err != nil { + return + } + } + return +} + +// Parse parses flag definitions from the argument list, which should not +// include the command name. Must be called after all flags in the FlagSet +// are defined and before flags are accessed by the program. +// The return value will be ErrHelp if -help was set but not defined. +func (f *FlagSet) Parse(arguments []string) error { + f.parsed = true + f.args = make([]string, 0, len(arguments)) + err := f.parseArgs(arguments) + if err != nil { + switch f.errorHandling { + case ContinueOnError: + return err + case ExitOnError: + os.Exit(2) + case PanicOnError: + panic(err) + } + } + return nil +} + +// Parsed reports whether f.Parse has been called. +func (f *FlagSet) Parsed() bool { + return f.parsed +} + +// Parse parses the command-line flags from os.Args[1:]. Must be called +// after all flags are defined and before flags are accessed by the program. +func Parse() { + // Ignore errors; CommandLine is set for ExitOnError. + CommandLine.Parse(os.Args[1:]) +} + +// SetInterspersed sets whether to support interspersed option/non-option arguments. +func SetInterspersed(interspersed bool) { + CommandLine.SetInterspersed(interspersed) +} + +// Parsed returns true if the command-line flags have been parsed. +func Parsed() bool { + return CommandLine.Parsed() +} + +// CommandLine is the default set of command-line flags, parsed from os.Args. +var CommandLine = NewFlagSet(os.Args[0], ExitOnError) + +// NewFlagSet returns a new, empty flag set with the specified name and +// error handling property. +func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet { + f := &FlagSet{ + name: name, + errorHandling: errorHandling, + argsLenAtDash: -1, + interspersed: true, + } + return f +} + +// SetInterspersed sets whether to support interspersed option/non-option arguments. +func (f *FlagSet) SetInterspersed(interspersed bool) { + f.interspersed = interspersed +} + +// Init sets the name and error handling property for a flag set. +// By default, the zero FlagSet uses an empty name and the +// ContinueOnError error handling policy. +func (f *FlagSet) Init(name string, errorHandling ErrorHandling) { + f.name = name + f.errorHandling = errorHandling + f.argsLenAtDash = -1 +} diff --git a/vendor/github.com/spf13/pflag/float32.go b/vendor/github.com/spf13/pflag/float32.go new file mode 100644 index 0000000..7683fae --- /dev/null +++ b/vendor/github.com/spf13/pflag/float32.go @@ -0,0 +1,91 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- float32 Value +type float32Value float32 + +func newFloat32Value(val float32, p *float32) *float32Value { + *p = val + return (*float32Value)(p) +} + +func (f *float32Value) Set(s string) error { + v, err := strconv.ParseFloat(s, 32) + *f = float32Value(v) + return err +} + +func (f *float32Value) Type() string { + return "float32" +} + +func (f *float32Value) String() string { return fmt.Sprintf("%v", *f) } + +func float32Conv(sval string) (interface{}, error) { + v, err := strconv.ParseFloat(sval, 32) + if err != nil { + return 0, err + } + return float32(v), nil +} + +// GetFloat32 return the float32 value of a flag with the given name +func (f *FlagSet) GetFloat32(name string) (float32, error) { + val, err := f.getFlagType(name, "float32", float32Conv) + if err != nil { + return 0, err + } + return val.(float32), nil +} + +// Float32Var defines a float32 flag with specified name, default value, and usage string. +// The argument p points to a float32 variable in which to store the value of the flag. +func (f *FlagSet) Float32Var(p *float32, name string, value float32, usage string) { + f.VarP(newFloat32Value(value, p), name, "", usage) +} + +// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Float32VarP(p *float32, name, shorthand string, value float32, usage string) { + f.VarP(newFloat32Value(value, p), name, shorthand, usage) +} + +// Float32Var defines a float32 flag with specified name, default value, and usage string. +// The argument p points to a float32 variable in which to store the value of the flag. +func Float32Var(p *float32, name string, value float32, usage string) { + CommandLine.VarP(newFloat32Value(value, p), name, "", usage) +} + +// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash. +func Float32VarP(p *float32, name, shorthand string, value float32, usage string) { + CommandLine.VarP(newFloat32Value(value, p), name, shorthand, usage) +} + +// Float32 defines a float32 flag with specified name, default value, and usage string. +// The return value is the address of a float32 variable that stores the value of the flag. +func (f *FlagSet) Float32(name string, value float32, usage string) *float32 { + p := new(float32) + f.Float32VarP(p, name, "", value, usage) + return p +} + +// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Float32P(name, shorthand string, value float32, usage string) *float32 { + p := new(float32) + f.Float32VarP(p, name, shorthand, value, usage) + return p +} + +// Float32 defines a float32 flag with specified name, default value, and usage string. +// The return value is the address of a float32 variable that stores the value of the flag. +func Float32(name string, value float32, usage string) *float32 { + return CommandLine.Float32P(name, "", value, usage) +} + +// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash. +func Float32P(name, shorthand string, value float32, usage string) *float32 { + return CommandLine.Float32P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/float64.go b/vendor/github.com/spf13/pflag/float64.go new file mode 100644 index 0000000..50fbf8c --- /dev/null +++ b/vendor/github.com/spf13/pflag/float64.go @@ -0,0 +1,87 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- float64 Value +type float64Value float64 + +func newFloat64Value(val float64, p *float64) *float64Value { + *p = val + return (*float64Value)(p) +} + +func (f *float64Value) Set(s string) error { + v, err := strconv.ParseFloat(s, 64) + *f = float64Value(v) + return err +} + +func (f *float64Value) Type() string { + return "float64" +} + +func (f *float64Value) String() string { return fmt.Sprintf("%v", *f) } + +func float64Conv(sval string) (interface{}, error) { + return strconv.ParseFloat(sval, 64) +} + +// GetFloat64 return the float64 value of a flag with the given name +func (f *FlagSet) GetFloat64(name string) (float64, error) { + val, err := f.getFlagType(name, "float64", float64Conv) + if err != nil { + return 0, err + } + return val.(float64), nil +} + +// Float64Var defines a float64 flag with specified name, default value, and usage string. +// The argument p points to a float64 variable in which to store the value of the flag. +func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) { + f.VarP(newFloat64Value(value, p), name, "", usage) +} + +// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) { + f.VarP(newFloat64Value(value, p), name, shorthand, usage) +} + +// Float64Var defines a float64 flag with specified name, default value, and usage string. +// The argument p points to a float64 variable in which to store the value of the flag. +func Float64Var(p *float64, name string, value float64, usage string) { + CommandLine.VarP(newFloat64Value(value, p), name, "", usage) +} + +// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash. +func Float64VarP(p *float64, name, shorthand string, value float64, usage string) { + CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage) +} + +// Float64 defines a float64 flag with specified name, default value, and usage string. +// The return value is the address of a float64 variable that stores the value of the flag. +func (f *FlagSet) Float64(name string, value float64, usage string) *float64 { + p := new(float64) + f.Float64VarP(p, name, "", value, usage) + return p +} + +// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 { + p := new(float64) + f.Float64VarP(p, name, shorthand, value, usage) + return p +} + +// Float64 defines a float64 flag with specified name, default value, and usage string. +// The return value is the address of a float64 variable that stores the value of the flag. +func Float64(name string, value float64, usage string) *float64 { + return CommandLine.Float64P(name, "", value, usage) +} + +// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash. +func Float64P(name, shorthand string, value float64, usage string) *float64 { + return CommandLine.Float64P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/golangflag.go b/vendor/github.com/spf13/pflag/golangflag.go new file mode 100644 index 0000000..b056147 --- /dev/null +++ b/vendor/github.com/spf13/pflag/golangflag.go @@ -0,0 +1,104 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pflag + +import ( + goflag "flag" + "fmt" + "reflect" + "strings" +) + +var _ = fmt.Print + +// flagValueWrapper implements pflag.Value around a flag.Value. The main +// difference here is the addition of the Type method that returns a string +// name of the type. As this is generally unknown, we approximate that with +// reflection. +type flagValueWrapper struct { + inner goflag.Value + flagType string +} + +// We are just copying the boolFlag interface out of goflag as that is what +// they use to decide if a flag should get "true" when no arg is given. +type goBoolFlag interface { + goflag.Value + IsBoolFlag() bool +} + +func wrapFlagValue(v goflag.Value) Value { + // If the flag.Value happens to also be a pflag.Value, just use it directly. + if pv, ok := v.(Value); ok { + return pv + } + + pv := &flagValueWrapper{ + inner: v, + } + + t := reflect.TypeOf(v) + if t.Kind() == reflect.Interface || t.Kind() == reflect.Ptr { + t = t.Elem() + } + + pv.flagType = strings.TrimSuffix(t.Name(), "Value") + return pv +} + +func (v *flagValueWrapper) String() string { + return v.inner.String() +} + +func (v *flagValueWrapper) Set(s string) error { + return v.inner.Set(s) +} + +func (v *flagValueWrapper) Type() string { + return v.flagType +} + +// PFlagFromGoFlag will return a *pflag.Flag given a *flag.Flag +// If the *flag.Flag.Name was a single character (ex: `v`) it will be accessiblei +// with both `-v` and `--v` in flags. If the golang flag was more than a single +// character (ex: `verbose`) it will only be accessible via `--verbose` +func PFlagFromGoFlag(goflag *goflag.Flag) *Flag { + // Remember the default value as a string; it won't change. + flag := &Flag{ + Name: goflag.Name, + Usage: goflag.Usage, + Value: wrapFlagValue(goflag.Value), + // Looks like golang flags don't set DefValue correctly :-( + //DefValue: goflag.DefValue, + DefValue: goflag.Value.String(), + } + // Ex: if the golang flag was -v, allow both -v and --v to work + if len(flag.Name) == 1 { + flag.Shorthand = flag.Name + } + if fv, ok := goflag.Value.(goBoolFlag); ok && fv.IsBoolFlag() { + flag.NoOptDefVal = "true" + } + return flag +} + +// AddGoFlag will add the given *flag.Flag to the pflag.FlagSet +func (f *FlagSet) AddGoFlag(goflag *goflag.Flag) { + if f.Lookup(goflag.Name) != nil { + return + } + newflag := PFlagFromGoFlag(goflag) + f.AddFlag(newflag) +} + +// AddGoFlagSet will add the given *flag.FlagSet to the pflag.FlagSet +func (f *FlagSet) AddGoFlagSet(newSet *goflag.FlagSet) { + if newSet == nil { + return + } + newSet.VisitAll(func(goflag *goflag.Flag) { + f.AddGoFlag(goflag) + }) +} diff --git a/vendor/github.com/spf13/pflag/int.go b/vendor/github.com/spf13/pflag/int.go new file mode 100644 index 0000000..b656036 --- /dev/null +++ b/vendor/github.com/spf13/pflag/int.go @@ -0,0 +1,87 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- int Value +type intValue int + +func newIntValue(val int, p *int) *intValue { + *p = val + return (*intValue)(p) +} + +func (i *intValue) Set(s string) error { + v, err := strconv.ParseInt(s, 0, 64) + *i = intValue(v) + return err +} + +func (i *intValue) Type() string { + return "int" +} + +func (i *intValue) String() string { return fmt.Sprintf("%v", *i) } + +func intConv(sval string) (interface{}, error) { + return strconv.Atoi(sval) +} + +// GetInt return the int value of a flag with the given name +func (f *FlagSet) GetInt(name string) (int, error) { + val, err := f.getFlagType(name, "int", intConv) + if err != nil { + return 0, err + } + return val.(int), nil +} + +// IntVar defines an int flag with specified name, default value, and usage string. +// The argument p points to an int variable in which to store the value of the flag. +func (f *FlagSet) IntVar(p *int, name string, value int, usage string) { + f.VarP(newIntValue(value, p), name, "", usage) +} + +// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IntVarP(p *int, name, shorthand string, value int, usage string) { + f.VarP(newIntValue(value, p), name, shorthand, usage) +} + +// IntVar defines an int flag with specified name, default value, and usage string. +// The argument p points to an int variable in which to store the value of the flag. +func IntVar(p *int, name string, value int, usage string) { + CommandLine.VarP(newIntValue(value, p), name, "", usage) +} + +// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash. +func IntVarP(p *int, name, shorthand string, value int, usage string) { + CommandLine.VarP(newIntValue(value, p), name, shorthand, usage) +} + +// Int defines an int flag with specified name, default value, and usage string. +// The return value is the address of an int variable that stores the value of the flag. +func (f *FlagSet) Int(name string, value int, usage string) *int { + p := new(int) + f.IntVarP(p, name, "", value, usage) + return p +} + +// IntP is like Int, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IntP(name, shorthand string, value int, usage string) *int { + p := new(int) + f.IntVarP(p, name, shorthand, value, usage) + return p +} + +// Int defines an int flag with specified name, default value, and usage string. +// The return value is the address of an int variable that stores the value of the flag. +func Int(name string, value int, usage string) *int { + return CommandLine.IntP(name, "", value, usage) +} + +// IntP is like Int, but accepts a shorthand letter that can be used after a single dash. +func IntP(name, shorthand string, value int, usage string) *int { + return CommandLine.IntP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/int32.go b/vendor/github.com/spf13/pflag/int32.go new file mode 100644 index 0000000..41659a9 --- /dev/null +++ b/vendor/github.com/spf13/pflag/int32.go @@ -0,0 +1,91 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- int32 Value +type int32Value int32 + +func newInt32Value(val int32, p *int32) *int32Value { + *p = val + return (*int32Value)(p) +} + +func (i *int32Value) Set(s string) error { + v, err := strconv.ParseInt(s, 0, 32) + *i = int32Value(v) + return err +} + +func (i *int32Value) Type() string { + return "int32" +} + +func (i *int32Value) String() string { return fmt.Sprintf("%v", *i) } + +func int32Conv(sval string) (interface{}, error) { + v, err := strconv.ParseInt(sval, 0, 32) + if err != nil { + return 0, err + } + return int32(v), nil +} + +// GetInt32 return the int32 value of a flag with the given name +func (f *FlagSet) GetInt32(name string) (int32, error) { + val, err := f.getFlagType(name, "int32", int32Conv) + if err != nil { + return 0, err + } + return val.(int32), nil +} + +// Int32Var defines an int32 flag with specified name, default value, and usage string. +// The argument p points to an int32 variable in which to store the value of the flag. +func (f *FlagSet) Int32Var(p *int32, name string, value int32, usage string) { + f.VarP(newInt32Value(value, p), name, "", usage) +} + +// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Int32VarP(p *int32, name, shorthand string, value int32, usage string) { + f.VarP(newInt32Value(value, p), name, shorthand, usage) +} + +// Int32Var defines an int32 flag with specified name, default value, and usage string. +// The argument p points to an int32 variable in which to store the value of the flag. +func Int32Var(p *int32, name string, value int32, usage string) { + CommandLine.VarP(newInt32Value(value, p), name, "", usage) +} + +// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash. +func Int32VarP(p *int32, name, shorthand string, value int32, usage string) { + CommandLine.VarP(newInt32Value(value, p), name, shorthand, usage) +} + +// Int32 defines an int32 flag with specified name, default value, and usage string. +// The return value is the address of an int32 variable that stores the value of the flag. +func (f *FlagSet) Int32(name string, value int32, usage string) *int32 { + p := new(int32) + f.Int32VarP(p, name, "", value, usage) + return p +} + +// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Int32P(name, shorthand string, value int32, usage string) *int32 { + p := new(int32) + f.Int32VarP(p, name, shorthand, value, usage) + return p +} + +// Int32 defines an int32 flag with specified name, default value, and usage string. +// The return value is the address of an int32 variable that stores the value of the flag. +func Int32(name string, value int32, usage string) *int32 { + return CommandLine.Int32P(name, "", value, usage) +} + +// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash. +func Int32P(name, shorthand string, value int32, usage string) *int32 { + return CommandLine.Int32P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/int64.go b/vendor/github.com/spf13/pflag/int64.go new file mode 100644 index 0000000..6e67e38 --- /dev/null +++ b/vendor/github.com/spf13/pflag/int64.go @@ -0,0 +1,87 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- int64 Value +type int64Value int64 + +func newInt64Value(val int64, p *int64) *int64Value { + *p = val + return (*int64Value)(p) +} + +func (i *int64Value) Set(s string) error { + v, err := strconv.ParseInt(s, 0, 64) + *i = int64Value(v) + return err +} + +func (i *int64Value) Type() string { + return "int64" +} + +func (i *int64Value) String() string { return fmt.Sprintf("%v", *i) } + +func int64Conv(sval string) (interface{}, error) { + return strconv.ParseInt(sval, 0, 64) +} + +// GetInt64 return the int64 value of a flag with the given name +func (f *FlagSet) GetInt64(name string) (int64, error) { + val, err := f.getFlagType(name, "int64", int64Conv) + if err != nil { + return 0, err + } + return val.(int64), nil +} + +// Int64Var defines an int64 flag with specified name, default value, and usage string. +// The argument p points to an int64 variable in which to store the value of the flag. +func (f *FlagSet) Int64Var(p *int64, name string, value int64, usage string) { + f.VarP(newInt64Value(value, p), name, "", usage) +} + +// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Int64VarP(p *int64, name, shorthand string, value int64, usage string) { + f.VarP(newInt64Value(value, p), name, shorthand, usage) +} + +// Int64Var defines an int64 flag with specified name, default value, and usage string. +// The argument p points to an int64 variable in which to store the value of the flag. +func Int64Var(p *int64, name string, value int64, usage string) { + CommandLine.VarP(newInt64Value(value, p), name, "", usage) +} + +// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash. +func Int64VarP(p *int64, name, shorthand string, value int64, usage string) { + CommandLine.VarP(newInt64Value(value, p), name, shorthand, usage) +} + +// Int64 defines an int64 flag with specified name, default value, and usage string. +// The return value is the address of an int64 variable that stores the value of the flag. +func (f *FlagSet) Int64(name string, value int64, usage string) *int64 { + p := new(int64) + f.Int64VarP(p, name, "", value, usage) + return p +} + +// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Int64P(name, shorthand string, value int64, usage string) *int64 { + p := new(int64) + f.Int64VarP(p, name, shorthand, value, usage) + return p +} + +// Int64 defines an int64 flag with specified name, default value, and usage string. +// The return value is the address of an int64 variable that stores the value of the flag. +func Int64(name string, value int64, usage string) *int64 { + return CommandLine.Int64P(name, "", value, usage) +} + +// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash. +func Int64P(name, shorthand string, value int64, usage string) *int64 { + return CommandLine.Int64P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/int8.go b/vendor/github.com/spf13/pflag/int8.go new file mode 100644 index 0000000..400db21 --- /dev/null +++ b/vendor/github.com/spf13/pflag/int8.go @@ -0,0 +1,91 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- int8 Value +type int8Value int8 + +func newInt8Value(val int8, p *int8) *int8Value { + *p = val + return (*int8Value)(p) +} + +func (i *int8Value) Set(s string) error { + v, err := strconv.ParseInt(s, 0, 8) + *i = int8Value(v) + return err +} + +func (i *int8Value) Type() string { + return "int8" +} + +func (i *int8Value) String() string { return fmt.Sprintf("%v", *i) } + +func int8Conv(sval string) (interface{}, error) { + v, err := strconv.ParseInt(sval, 0, 8) + if err != nil { + return 0, err + } + return int8(v), nil +} + +// GetInt8 return the int8 value of a flag with the given name +func (f *FlagSet) GetInt8(name string) (int8, error) { + val, err := f.getFlagType(name, "int8", int8Conv) + if err != nil { + return 0, err + } + return val.(int8), nil +} + +// Int8Var defines an int8 flag with specified name, default value, and usage string. +// The argument p points to an int8 variable in which to store the value of the flag. +func (f *FlagSet) Int8Var(p *int8, name string, value int8, usage string) { + f.VarP(newInt8Value(value, p), name, "", usage) +} + +// Int8VarP is like Int8Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Int8VarP(p *int8, name, shorthand string, value int8, usage string) { + f.VarP(newInt8Value(value, p), name, shorthand, usage) +} + +// Int8Var defines an int8 flag with specified name, default value, and usage string. +// The argument p points to an int8 variable in which to store the value of the flag. +func Int8Var(p *int8, name string, value int8, usage string) { + CommandLine.VarP(newInt8Value(value, p), name, "", usage) +} + +// Int8VarP is like Int8Var, but accepts a shorthand letter that can be used after a single dash. +func Int8VarP(p *int8, name, shorthand string, value int8, usage string) { + CommandLine.VarP(newInt8Value(value, p), name, shorthand, usage) +} + +// Int8 defines an int8 flag with specified name, default value, and usage string. +// The return value is the address of an int8 variable that stores the value of the flag. +func (f *FlagSet) Int8(name string, value int8, usage string) *int8 { + p := new(int8) + f.Int8VarP(p, name, "", value, usage) + return p +} + +// Int8P is like Int8, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Int8P(name, shorthand string, value int8, usage string) *int8 { + p := new(int8) + f.Int8VarP(p, name, shorthand, value, usage) + return p +} + +// Int8 defines an int8 flag with specified name, default value, and usage string. +// The return value is the address of an int8 variable that stores the value of the flag. +func Int8(name string, value int8, usage string) *int8 { + return CommandLine.Int8P(name, "", value, usage) +} + +// Int8P is like Int8, but accepts a shorthand letter that can be used after a single dash. +func Int8P(name, shorthand string, value int8, usage string) *int8 { + return CommandLine.Int8P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/int_slice.go b/vendor/github.com/spf13/pflag/int_slice.go new file mode 100644 index 0000000..1e7c9ed --- /dev/null +++ b/vendor/github.com/spf13/pflag/int_slice.go @@ -0,0 +1,128 @@ +package pflag + +import ( + "fmt" + "strconv" + "strings" +) + +// -- intSlice Value +type intSliceValue struct { + value *[]int + changed bool +} + +func newIntSliceValue(val []int, p *[]int) *intSliceValue { + isv := new(intSliceValue) + isv.value = p + *isv.value = val + return isv +} + +func (s *intSliceValue) Set(val string) error { + ss := strings.Split(val, ",") + out := make([]int, len(ss)) + for i, d := range ss { + var err error + out[i], err = strconv.Atoi(d) + if err != nil { + return err + } + + } + if !s.changed { + *s.value = out + } else { + *s.value = append(*s.value, out...) + } + s.changed = true + return nil +} + +func (s *intSliceValue) Type() string { + return "intSlice" +} + +func (s *intSliceValue) String() string { + out := make([]string, len(*s.value)) + for i, d := range *s.value { + out[i] = fmt.Sprintf("%d", d) + } + return "[" + strings.Join(out, ",") + "]" +} + +func intSliceConv(val string) (interface{}, error) { + val = strings.Trim(val, "[]") + // Empty string would cause a slice with one (empty) entry + if len(val) == 0 { + return []int{}, nil + } + ss := strings.Split(val, ",") + out := make([]int, len(ss)) + for i, d := range ss { + var err error + out[i], err = strconv.Atoi(d) + if err != nil { + return nil, err + } + + } + return out, nil +} + +// GetIntSlice return the []int value of a flag with the given name +func (f *FlagSet) GetIntSlice(name string) ([]int, error) { + val, err := f.getFlagType(name, "intSlice", intSliceConv) + if err != nil { + return []int{}, err + } + return val.([]int), nil +} + +// IntSliceVar defines a intSlice flag with specified name, default value, and usage string. +// The argument p points to a []int variable in which to store the value of the flag. +func (f *FlagSet) IntSliceVar(p *[]int, name string, value []int, usage string) { + f.VarP(newIntSliceValue(value, p), name, "", usage) +} + +// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) { + f.VarP(newIntSliceValue(value, p), name, shorthand, usage) +} + +// IntSliceVar defines a int[] flag with specified name, default value, and usage string. +// The argument p points to a int[] variable in which to store the value of the flag. +func IntSliceVar(p *[]int, name string, value []int, usage string) { + CommandLine.VarP(newIntSliceValue(value, p), name, "", usage) +} + +// IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash. +func IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) { + CommandLine.VarP(newIntSliceValue(value, p), name, shorthand, usage) +} + +// IntSlice defines a []int flag with specified name, default value, and usage string. +// The return value is the address of a []int variable that stores the value of the flag. +func (f *FlagSet) IntSlice(name string, value []int, usage string) *[]int { + p := []int{} + f.IntSliceVarP(&p, name, "", value, usage) + return &p +} + +// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IntSliceP(name, shorthand string, value []int, usage string) *[]int { + p := []int{} + f.IntSliceVarP(&p, name, shorthand, value, usage) + return &p +} + +// IntSlice defines a []int flag with specified name, default value, and usage string. +// The return value is the address of a []int variable that stores the value of the flag. +func IntSlice(name string, value []int, usage string) *[]int { + return CommandLine.IntSliceP(name, "", value, usage) +} + +// IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash. +func IntSliceP(name, shorthand string, value []int, usage string) *[]int { + return CommandLine.IntSliceP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/ip.go b/vendor/github.com/spf13/pflag/ip.go new file mode 100644 index 0000000..88a1743 --- /dev/null +++ b/vendor/github.com/spf13/pflag/ip.go @@ -0,0 +1,96 @@ +package pflag + +import ( + "fmt" + "net" + "strings" +) + +var _ = strings.TrimSpace + +// -- net.IP value +type ipValue net.IP + +func newIPValue(val net.IP, p *net.IP) *ipValue { + *p = val + return (*ipValue)(p) +} + +func (i *ipValue) String() string { return net.IP(*i).String() } +func (i *ipValue) Set(s string) error { + ip := net.ParseIP(strings.TrimSpace(s)) + if ip == nil { + return fmt.Errorf("failed to parse IP: %q", s) + } + *i = ipValue(ip) + return nil +} + +func (i *ipValue) Type() string { + return "ip" +} + +func ipConv(sval string) (interface{}, error) { + ip := net.ParseIP(sval) + if ip != nil { + return ip, nil + } + return nil, fmt.Errorf("invalid string being converted to IP address: %s", sval) +} + +// GetIP return the net.IP value of a flag with the given name +func (f *FlagSet) GetIP(name string) (net.IP, error) { + val, err := f.getFlagType(name, "ip", ipConv) + if err != nil { + return nil, err + } + return val.(net.IP), nil +} + +// IPVar defines an net.IP flag with specified name, default value, and usage string. +// The argument p points to an net.IP variable in which to store the value of the flag. +func (f *FlagSet) IPVar(p *net.IP, name string, value net.IP, usage string) { + f.VarP(newIPValue(value, p), name, "", usage) +} + +// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) { + f.VarP(newIPValue(value, p), name, shorthand, usage) +} + +// IPVar defines an net.IP flag with specified name, default value, and usage string. +// The argument p points to an net.IP variable in which to store the value of the flag. +func IPVar(p *net.IP, name string, value net.IP, usage string) { + CommandLine.VarP(newIPValue(value, p), name, "", usage) +} + +// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash. +func IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) { + CommandLine.VarP(newIPValue(value, p), name, shorthand, usage) +} + +// IP defines an net.IP flag with specified name, default value, and usage string. +// The return value is the address of an net.IP variable that stores the value of the flag. +func (f *FlagSet) IP(name string, value net.IP, usage string) *net.IP { + p := new(net.IP) + f.IPVarP(p, name, "", value, usage) + return p +} + +// IPP is like IP, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IPP(name, shorthand string, value net.IP, usage string) *net.IP { + p := new(net.IP) + f.IPVarP(p, name, shorthand, value, usage) + return p +} + +// IP defines an net.IP flag with specified name, default value, and usage string. +// The return value is the address of an net.IP variable that stores the value of the flag. +func IP(name string, value net.IP, usage string) *net.IP { + return CommandLine.IPP(name, "", value, usage) +} + +// IPP is like IP, but accepts a shorthand letter that can be used after a single dash. +func IPP(name, shorthand string, value net.IP, usage string) *net.IP { + return CommandLine.IPP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/ipmask.go b/vendor/github.com/spf13/pflag/ipmask.go new file mode 100644 index 0000000..5bd44bd --- /dev/null +++ b/vendor/github.com/spf13/pflag/ipmask.go @@ -0,0 +1,122 @@ +package pflag + +import ( + "fmt" + "net" + "strconv" +) + +// -- net.IPMask value +type ipMaskValue net.IPMask + +func newIPMaskValue(val net.IPMask, p *net.IPMask) *ipMaskValue { + *p = val + return (*ipMaskValue)(p) +} + +func (i *ipMaskValue) String() string { return net.IPMask(*i).String() } +func (i *ipMaskValue) Set(s string) error { + ip := ParseIPv4Mask(s) + if ip == nil { + return fmt.Errorf("failed to parse IP mask: %q", s) + } + *i = ipMaskValue(ip) + return nil +} + +func (i *ipMaskValue) Type() string { + return "ipMask" +} + +// ParseIPv4Mask written in IP form (e.g. 255.255.255.0). +// This function should really belong to the net package. +func ParseIPv4Mask(s string) net.IPMask { + mask := net.ParseIP(s) + if mask == nil { + if len(s) != 8 { + return nil + } + // net.IPMask.String() actually outputs things like ffffff00 + // so write a horrible parser for that as well :-( + m := []int{} + for i := 0; i < 4; i++ { + b := "0x" + s[2*i:2*i+2] + d, err := strconv.ParseInt(b, 0, 0) + if err != nil { + return nil + } + m = append(m, int(d)) + } + s := fmt.Sprintf("%d.%d.%d.%d", m[0], m[1], m[2], m[3]) + mask = net.ParseIP(s) + if mask == nil { + return nil + } + } + return net.IPv4Mask(mask[12], mask[13], mask[14], mask[15]) +} + +func parseIPv4Mask(sval string) (interface{}, error) { + mask := ParseIPv4Mask(sval) + if mask == nil { + return nil, fmt.Errorf("unable to parse %s as net.IPMask", sval) + } + return mask, nil +} + +// GetIPv4Mask return the net.IPv4Mask value of a flag with the given name +func (f *FlagSet) GetIPv4Mask(name string) (net.IPMask, error) { + val, err := f.getFlagType(name, "ipMask", parseIPv4Mask) + if err != nil { + return nil, err + } + return val.(net.IPMask), nil +} + +// IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string. +// The argument p points to an net.IPMask variable in which to store the value of the flag. +func (f *FlagSet) IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) { + f.VarP(newIPMaskValue(value, p), name, "", usage) +} + +// IPMaskVarP is like IPMaskVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) { + f.VarP(newIPMaskValue(value, p), name, shorthand, usage) +} + +// IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string. +// The argument p points to an net.IPMask variable in which to store the value of the flag. +func IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) { + CommandLine.VarP(newIPMaskValue(value, p), name, "", usage) +} + +// IPMaskVarP is like IPMaskVar, but accepts a shorthand letter that can be used after a single dash. +func IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) { + CommandLine.VarP(newIPMaskValue(value, p), name, shorthand, usage) +} + +// IPMask defines an net.IPMask flag with specified name, default value, and usage string. +// The return value is the address of an net.IPMask variable that stores the value of the flag. +func (f *FlagSet) IPMask(name string, value net.IPMask, usage string) *net.IPMask { + p := new(net.IPMask) + f.IPMaskVarP(p, name, "", value, usage) + return p +} + +// IPMaskP is like IPMask, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask { + p := new(net.IPMask) + f.IPMaskVarP(p, name, shorthand, value, usage) + return p +} + +// IPMask defines an net.IPMask flag with specified name, default value, and usage string. +// The return value is the address of an net.IPMask variable that stores the value of the flag. +func IPMask(name string, value net.IPMask, usage string) *net.IPMask { + return CommandLine.IPMaskP(name, "", value, usage) +} + +// IPMaskP is like IP, but accepts a shorthand letter that can be used after a single dash. +func IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask { + return CommandLine.IPMaskP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/ipnet.go b/vendor/github.com/spf13/pflag/ipnet.go new file mode 100644 index 0000000..149b764 --- /dev/null +++ b/vendor/github.com/spf13/pflag/ipnet.go @@ -0,0 +1,100 @@ +package pflag + +import ( + "fmt" + "net" + "strings" +) + +// IPNet adapts net.IPNet for use as a flag. +type ipNetValue net.IPNet + +func (ipnet ipNetValue) String() string { + n := net.IPNet(ipnet) + return n.String() +} + +func (ipnet *ipNetValue) Set(value string) error { + _, n, err := net.ParseCIDR(strings.TrimSpace(value)) + if err != nil { + return err + } + *ipnet = ipNetValue(*n) + return nil +} + +func (*ipNetValue) Type() string { + return "ipNet" +} + +var _ = strings.TrimSpace + +func newIPNetValue(val net.IPNet, p *net.IPNet) *ipNetValue { + *p = val + return (*ipNetValue)(p) +} + +func ipNetConv(sval string) (interface{}, error) { + _, n, err := net.ParseCIDR(strings.TrimSpace(sval)) + if err == nil { + return *n, nil + } + return nil, fmt.Errorf("invalid string being converted to IPNet: %s", sval) +} + +// GetIPNet return the net.IPNet value of a flag with the given name +func (f *FlagSet) GetIPNet(name string) (net.IPNet, error) { + val, err := f.getFlagType(name, "ipNet", ipNetConv) + if err != nil { + return net.IPNet{}, err + } + return val.(net.IPNet), nil +} + +// IPNetVar defines an net.IPNet flag with specified name, default value, and usage string. +// The argument p points to an net.IPNet variable in which to store the value of the flag. +func (f *FlagSet) IPNetVar(p *net.IPNet, name string, value net.IPNet, usage string) { + f.VarP(newIPNetValue(value, p), name, "", usage) +} + +// IPNetVarP is like IPNetVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IPNetVarP(p *net.IPNet, name, shorthand string, value net.IPNet, usage string) { + f.VarP(newIPNetValue(value, p), name, shorthand, usage) +} + +// IPNetVar defines an net.IPNet flag with specified name, default value, and usage string. +// The argument p points to an net.IPNet variable in which to store the value of the flag. +func IPNetVar(p *net.IPNet, name string, value net.IPNet, usage string) { + CommandLine.VarP(newIPNetValue(value, p), name, "", usage) +} + +// IPNetVarP is like IPNetVar, but accepts a shorthand letter that can be used after a single dash. +func IPNetVarP(p *net.IPNet, name, shorthand string, value net.IPNet, usage string) { + CommandLine.VarP(newIPNetValue(value, p), name, shorthand, usage) +} + +// IPNet defines an net.IPNet flag with specified name, default value, and usage string. +// The return value is the address of an net.IPNet variable that stores the value of the flag. +func (f *FlagSet) IPNet(name string, value net.IPNet, usage string) *net.IPNet { + p := new(net.IPNet) + f.IPNetVarP(p, name, "", value, usage) + return p +} + +// IPNetP is like IPNet, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) IPNetP(name, shorthand string, value net.IPNet, usage string) *net.IPNet { + p := new(net.IPNet) + f.IPNetVarP(p, name, shorthand, value, usage) + return p +} + +// IPNet defines an net.IPNet flag with specified name, default value, and usage string. +// The return value is the address of an net.IPNet variable that stores the value of the flag. +func IPNet(name string, value net.IPNet, usage string) *net.IPNet { + return CommandLine.IPNetP(name, "", value, usage) +} + +// IPNetP is like IPNet, but accepts a shorthand letter that can be used after a single dash. +func IPNetP(name, shorthand string, value net.IPNet, usage string) *net.IPNet { + return CommandLine.IPNetP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/string.go b/vendor/github.com/spf13/pflag/string.go new file mode 100644 index 0000000..e296136 --- /dev/null +++ b/vendor/github.com/spf13/pflag/string.go @@ -0,0 +1,82 @@ +package pflag + +import "fmt" + +// -- string Value +type stringValue string + +func newStringValue(val string, p *string) *stringValue { + *p = val + return (*stringValue)(p) +} + +func (s *stringValue) Set(val string) error { + *s = stringValue(val) + return nil +} +func (s *stringValue) Type() string { + return "string" +} + +func (s *stringValue) String() string { return fmt.Sprintf("%s", *s) } + +func stringConv(sval string) (interface{}, error) { + return sval, nil +} + +// GetString return the string value of a flag with the given name +func (f *FlagSet) GetString(name string) (string, error) { + val, err := f.getFlagType(name, "string", stringConv) + if err != nil { + return "", err + } + return val.(string), nil +} + +// StringVar defines a string flag with specified name, default value, and usage string. +// The argument p points to a string variable in which to store the value of the flag. +func (f *FlagSet) StringVar(p *string, name string, value string, usage string) { + f.VarP(newStringValue(value, p), name, "", usage) +} + +// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) StringVarP(p *string, name, shorthand string, value string, usage string) { + f.VarP(newStringValue(value, p), name, shorthand, usage) +} + +// StringVar defines a string flag with specified name, default value, and usage string. +// The argument p points to a string variable in which to store the value of the flag. +func StringVar(p *string, name string, value string, usage string) { + CommandLine.VarP(newStringValue(value, p), name, "", usage) +} + +// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash. +func StringVarP(p *string, name, shorthand string, value string, usage string) { + CommandLine.VarP(newStringValue(value, p), name, shorthand, usage) +} + +// String defines a string flag with specified name, default value, and usage string. +// The return value is the address of a string variable that stores the value of the flag. +func (f *FlagSet) String(name string, value string, usage string) *string { + p := new(string) + f.StringVarP(p, name, "", value, usage) + return p +} + +// StringP is like String, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) StringP(name, shorthand string, value string, usage string) *string { + p := new(string) + f.StringVarP(p, name, shorthand, value, usage) + return p +} + +// String defines a string flag with specified name, default value, and usage string. +// The return value is the address of a string variable that stores the value of the flag. +func String(name string, value string, usage string) *string { + return CommandLine.StringP(name, "", value, usage) +} + +// StringP is like String, but accepts a shorthand letter that can be used after a single dash. +func StringP(name, shorthand string, value string, usage string) *string { + return CommandLine.StringP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/string_slice.go b/vendor/github.com/spf13/pflag/string_slice.go new file mode 100644 index 0000000..b53648b --- /dev/null +++ b/vendor/github.com/spf13/pflag/string_slice.go @@ -0,0 +1,111 @@ +package pflag + +import ( + "encoding/csv" + "fmt" + "strings" +) + +var _ = fmt.Fprint + +// -- stringSlice Value +type stringSliceValue struct { + value *[]string + changed bool +} + +func newStringSliceValue(val []string, p *[]string) *stringSliceValue { + ssv := new(stringSliceValue) + ssv.value = p + *ssv.value = val + return ssv +} + +func (s *stringSliceValue) Set(val string) error { + stringReader := strings.NewReader(val) + csvReader := csv.NewReader(stringReader) + v, err := csvReader.Read() + if err != nil { + return err + } + if !s.changed { + *s.value = v + } else { + *s.value = append(*s.value, v...) + } + s.changed = true + return nil +} + +func (s *stringSliceValue) Type() string { + return "stringSlice" +} + +func (s *stringSliceValue) String() string { return "[" + strings.Join(*s.value, ",") + "]" } + +func stringSliceConv(sval string) (interface{}, error) { + sval = strings.Trim(sval, "[]") + // An empty string would cause a slice with one (empty) string + if len(sval) == 0 { + return []string{}, nil + } + v := strings.Split(sval, ",") + return v, nil +} + +// GetStringSlice return the []string value of a flag with the given name +func (f *FlagSet) GetStringSlice(name string) ([]string, error) { + val, err := f.getFlagType(name, "stringSlice", stringSliceConv) + if err != nil { + return []string{}, err + } + return val.([]string), nil +} + +// StringSliceVar defines a string flag with specified name, default value, and usage string. +// The argument p points to a []string variable in which to store the value of the flag. +func (f *FlagSet) StringSliceVar(p *[]string, name string, value []string, usage string) { + f.VarP(newStringSliceValue(value, p), name, "", usage) +} + +// StringSliceVarP is like StringSliceVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) StringSliceVarP(p *[]string, name, shorthand string, value []string, usage string) { + f.VarP(newStringSliceValue(value, p), name, shorthand, usage) +} + +// StringSliceVar defines a string flag with specified name, default value, and usage string. +// The argument p points to a []string variable in which to store the value of the flag. +func StringSliceVar(p *[]string, name string, value []string, usage string) { + CommandLine.VarP(newStringSliceValue(value, p), name, "", usage) +} + +// StringSliceVarP is like StringSliceVar, but accepts a shorthand letter that can be used after a single dash. +func StringSliceVarP(p *[]string, name, shorthand string, value []string, usage string) { + CommandLine.VarP(newStringSliceValue(value, p), name, shorthand, usage) +} + +// StringSlice defines a string flag with specified name, default value, and usage string. +// The return value is the address of a []string variable that stores the value of the flag. +func (f *FlagSet) StringSlice(name string, value []string, usage string) *[]string { + p := []string{} + f.StringSliceVarP(&p, name, "", value, usage) + return &p +} + +// StringSliceP is like StringSlice, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) StringSliceP(name, shorthand string, value []string, usage string) *[]string { + p := []string{} + f.StringSliceVarP(&p, name, shorthand, value, usage) + return &p +} + +// StringSlice defines a string flag with specified name, default value, and usage string. +// The return value is the address of a []string variable that stores the value of the flag. +func StringSlice(name string, value []string, usage string) *[]string { + return CommandLine.StringSliceP(name, "", value, usage) +} + +// StringSliceP is like StringSlice, but accepts a shorthand letter that can be used after a single dash. +func StringSliceP(name, shorthand string, value []string, usage string) *[]string { + return CommandLine.StringSliceP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/uint.go b/vendor/github.com/spf13/pflag/uint.go new file mode 100644 index 0000000..e142b49 --- /dev/null +++ b/vendor/github.com/spf13/pflag/uint.go @@ -0,0 +1,91 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- uint Value +type uintValue uint + +func newUintValue(val uint, p *uint) *uintValue { + *p = val + return (*uintValue)(p) +} + +func (i *uintValue) Set(s string) error { + v, err := strconv.ParseUint(s, 0, 64) + *i = uintValue(v) + return err +} + +func (i *uintValue) Type() string { + return "uint" +} + +func (i *uintValue) String() string { return fmt.Sprintf("%v", *i) } + +func uintConv(sval string) (interface{}, error) { + v, err := strconv.ParseUint(sval, 0, 0) + if err != nil { + return 0, err + } + return uint(v), nil +} + +// GetUint return the uint value of a flag with the given name +func (f *FlagSet) GetUint(name string) (uint, error) { + val, err := f.getFlagType(name, "uint", uintConv) + if err != nil { + return 0, err + } + return val.(uint), nil +} + +// UintVar defines a uint flag with specified name, default value, and usage string. +// The argument p points to a uint variable in which to store the value of the flag. +func (f *FlagSet) UintVar(p *uint, name string, value uint, usage string) { + f.VarP(newUintValue(value, p), name, "", usage) +} + +// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) UintVarP(p *uint, name, shorthand string, value uint, usage string) { + f.VarP(newUintValue(value, p), name, shorthand, usage) +} + +// UintVar defines a uint flag with specified name, default value, and usage string. +// The argument p points to a uint variable in which to store the value of the flag. +func UintVar(p *uint, name string, value uint, usage string) { + CommandLine.VarP(newUintValue(value, p), name, "", usage) +} + +// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash. +func UintVarP(p *uint, name, shorthand string, value uint, usage string) { + CommandLine.VarP(newUintValue(value, p), name, shorthand, usage) +} + +// Uint defines a uint flag with specified name, default value, and usage string. +// The return value is the address of a uint variable that stores the value of the flag. +func (f *FlagSet) Uint(name string, value uint, usage string) *uint { + p := new(uint) + f.UintVarP(p, name, "", value, usage) + return p +} + +// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) UintP(name, shorthand string, value uint, usage string) *uint { + p := new(uint) + f.UintVarP(p, name, shorthand, value, usage) + return p +} + +// Uint defines a uint flag with specified name, default value, and usage string. +// The return value is the address of a uint variable that stores the value of the flag. +func Uint(name string, value uint, usage string) *uint { + return CommandLine.UintP(name, "", value, usage) +} + +// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash. +func UintP(name, shorthand string, value uint, usage string) *uint { + return CommandLine.UintP(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/uint16.go b/vendor/github.com/spf13/pflag/uint16.go new file mode 100644 index 0000000..5c96c19 --- /dev/null +++ b/vendor/github.com/spf13/pflag/uint16.go @@ -0,0 +1,89 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- uint16 value +type uint16Value uint16 + +func newUint16Value(val uint16, p *uint16) *uint16Value { + *p = val + return (*uint16Value)(p) +} +func (i *uint16Value) String() string { return fmt.Sprintf("%d", *i) } +func (i *uint16Value) Set(s string) error { + v, err := strconv.ParseUint(s, 0, 16) + *i = uint16Value(v) + return err +} + +func (i *uint16Value) Type() string { + return "uint16" +} + +func uint16Conv(sval string) (interface{}, error) { + v, err := strconv.ParseUint(sval, 0, 16) + if err != nil { + return 0, err + } + return uint16(v), nil +} + +// GetUint16 return the uint16 value of a flag with the given name +func (f *FlagSet) GetUint16(name string) (uint16, error) { + val, err := f.getFlagType(name, "uint16", uint16Conv) + if err != nil { + return 0, err + } + return val.(uint16), nil +} + +// Uint16Var defines a uint flag with specified name, default value, and usage string. +// The argument p points to a uint variable in which to store the value of the flag. +func (f *FlagSet) Uint16Var(p *uint16, name string, value uint16, usage string) { + f.VarP(newUint16Value(value, p), name, "", usage) +} + +// Uint16VarP is like Uint16Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint16VarP(p *uint16, name, shorthand string, value uint16, usage string) { + f.VarP(newUint16Value(value, p), name, shorthand, usage) +} + +// Uint16Var defines a uint flag with specified name, default value, and usage string. +// The argument p points to a uint variable in which to store the value of the flag. +func Uint16Var(p *uint16, name string, value uint16, usage string) { + CommandLine.VarP(newUint16Value(value, p), name, "", usage) +} + +// Uint16VarP is like Uint16Var, but accepts a shorthand letter that can be used after a single dash. +func Uint16VarP(p *uint16, name, shorthand string, value uint16, usage string) { + CommandLine.VarP(newUint16Value(value, p), name, shorthand, usage) +} + +// Uint16 defines a uint flag with specified name, default value, and usage string. +// The return value is the address of a uint variable that stores the value of the flag. +func (f *FlagSet) Uint16(name string, value uint16, usage string) *uint16 { + p := new(uint16) + f.Uint16VarP(p, name, "", value, usage) + return p +} + +// Uint16P is like Uint16, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint16P(name, shorthand string, value uint16, usage string) *uint16 { + p := new(uint16) + f.Uint16VarP(p, name, shorthand, value, usage) + return p +} + +// Uint16 defines a uint flag with specified name, default value, and usage string. +// The return value is the address of a uint variable that stores the value of the flag. +func Uint16(name string, value uint16, usage string) *uint16 { + return CommandLine.Uint16P(name, "", value, usage) +} + +// Uint16P is like Uint16, but accepts a shorthand letter that can be used after a single dash. +func Uint16P(name, shorthand string, value uint16, usage string) *uint16 { + return CommandLine.Uint16P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/uint32.go b/vendor/github.com/spf13/pflag/uint32.go new file mode 100644 index 0000000..294fcaa --- /dev/null +++ b/vendor/github.com/spf13/pflag/uint32.go @@ -0,0 +1,89 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- uint16 value +type uint32Value uint32 + +func newUint32Value(val uint32, p *uint32) *uint32Value { + *p = val + return (*uint32Value)(p) +} +func (i *uint32Value) String() string { return fmt.Sprintf("%d", *i) } +func (i *uint32Value) Set(s string) error { + v, err := strconv.ParseUint(s, 0, 32) + *i = uint32Value(v) + return err +} + +func (i *uint32Value) Type() string { + return "uint32" +} + +func uint32Conv(sval string) (interface{}, error) { + v, err := strconv.ParseUint(sval, 0, 32) + if err != nil { + return 0, err + } + return uint32(v), nil +} + +// GetUint32 return the uint32 value of a flag with the given name +func (f *FlagSet) GetUint32(name string) (uint32, error) { + val, err := f.getFlagType(name, "uint32", uint32Conv) + if err != nil { + return 0, err + } + return val.(uint32), nil +} + +// Uint32Var defines a uint32 flag with specified name, default value, and usage string. +// The argument p points to a uint32 variable in which to store the value of the flag. +func (f *FlagSet) Uint32Var(p *uint32, name string, value uint32, usage string) { + f.VarP(newUint32Value(value, p), name, "", usage) +} + +// Uint32VarP is like Uint32Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint32VarP(p *uint32, name, shorthand string, value uint32, usage string) { + f.VarP(newUint32Value(value, p), name, shorthand, usage) +} + +// Uint32Var defines a uint32 flag with specified name, default value, and usage string. +// The argument p points to a uint32 variable in which to store the value of the flag. +func Uint32Var(p *uint32, name string, value uint32, usage string) { + CommandLine.VarP(newUint32Value(value, p), name, "", usage) +} + +// Uint32VarP is like Uint32Var, but accepts a shorthand letter that can be used after a single dash. +func Uint32VarP(p *uint32, name, shorthand string, value uint32, usage string) { + CommandLine.VarP(newUint32Value(value, p), name, shorthand, usage) +} + +// Uint32 defines a uint32 flag with specified name, default value, and usage string. +// The return value is the address of a uint32 variable that stores the value of the flag. +func (f *FlagSet) Uint32(name string, value uint32, usage string) *uint32 { + p := new(uint32) + f.Uint32VarP(p, name, "", value, usage) + return p +} + +// Uint32P is like Uint32, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint32P(name, shorthand string, value uint32, usage string) *uint32 { + p := new(uint32) + f.Uint32VarP(p, name, shorthand, value, usage) + return p +} + +// Uint32 defines a uint32 flag with specified name, default value, and usage string. +// The return value is the address of a uint32 variable that stores the value of the flag. +func Uint32(name string, value uint32, usage string) *uint32 { + return CommandLine.Uint32P(name, "", value, usage) +} + +// Uint32P is like Uint32, but accepts a shorthand letter that can be used after a single dash. +func Uint32P(name, shorthand string, value uint32, usage string) *uint32 { + return CommandLine.Uint32P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/uint64.go b/vendor/github.com/spf13/pflag/uint64.go new file mode 100644 index 0000000..c681885 --- /dev/null +++ b/vendor/github.com/spf13/pflag/uint64.go @@ -0,0 +1,91 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- uint64 Value +type uint64Value uint64 + +func newUint64Value(val uint64, p *uint64) *uint64Value { + *p = val + return (*uint64Value)(p) +} + +func (i *uint64Value) Set(s string) error { + v, err := strconv.ParseUint(s, 0, 64) + *i = uint64Value(v) + return err +} + +func (i *uint64Value) Type() string { + return "uint64" +} + +func (i *uint64Value) String() string { return fmt.Sprintf("%v", *i) } + +func uint64Conv(sval string) (interface{}, error) { + v, err := strconv.ParseUint(sval, 0, 64) + if err != nil { + return 0, err + } + return uint64(v), nil +} + +// GetUint64 return the uint64 value of a flag with the given name +func (f *FlagSet) GetUint64(name string) (uint64, error) { + val, err := f.getFlagType(name, "uint64", uint64Conv) + if err != nil { + return 0, err + } + return val.(uint64), nil +} + +// Uint64Var defines a uint64 flag with specified name, default value, and usage string. +// The argument p points to a uint64 variable in which to store the value of the flag. +func (f *FlagSet) Uint64Var(p *uint64, name string, value uint64, usage string) { + f.VarP(newUint64Value(value, p), name, "", usage) +} + +// Uint64VarP is like Uint64Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint64VarP(p *uint64, name, shorthand string, value uint64, usage string) { + f.VarP(newUint64Value(value, p), name, shorthand, usage) +} + +// Uint64Var defines a uint64 flag with specified name, default value, and usage string. +// The argument p points to a uint64 variable in which to store the value of the flag. +func Uint64Var(p *uint64, name string, value uint64, usage string) { + CommandLine.VarP(newUint64Value(value, p), name, "", usage) +} + +// Uint64VarP is like Uint64Var, but accepts a shorthand letter that can be used after a single dash. +func Uint64VarP(p *uint64, name, shorthand string, value uint64, usage string) { + CommandLine.VarP(newUint64Value(value, p), name, shorthand, usage) +} + +// Uint64 defines a uint64 flag with specified name, default value, and usage string. +// The return value is the address of a uint64 variable that stores the value of the flag. +func (f *FlagSet) Uint64(name string, value uint64, usage string) *uint64 { + p := new(uint64) + f.Uint64VarP(p, name, "", value, usage) + return p +} + +// Uint64P is like Uint64, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint64P(name, shorthand string, value uint64, usage string) *uint64 { + p := new(uint64) + f.Uint64VarP(p, name, shorthand, value, usage) + return p +} + +// Uint64 defines a uint64 flag with specified name, default value, and usage string. +// The return value is the address of a uint64 variable that stores the value of the flag. +func Uint64(name string, value uint64, usage string) *uint64 { + return CommandLine.Uint64P(name, "", value, usage) +} + +// Uint64P is like Uint64, but accepts a shorthand letter that can be used after a single dash. +func Uint64P(name, shorthand string, value uint64, usage string) *uint64 { + return CommandLine.Uint64P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/pflag/uint8.go b/vendor/github.com/spf13/pflag/uint8.go new file mode 100644 index 0000000..26db418 --- /dev/null +++ b/vendor/github.com/spf13/pflag/uint8.go @@ -0,0 +1,91 @@ +package pflag + +import ( + "fmt" + "strconv" +) + +// -- uint8 Value +type uint8Value uint8 + +func newUint8Value(val uint8, p *uint8) *uint8Value { + *p = val + return (*uint8Value)(p) +} + +func (i *uint8Value) Set(s string) error { + v, err := strconv.ParseUint(s, 0, 8) + *i = uint8Value(v) + return err +} + +func (i *uint8Value) Type() string { + return "uint8" +} + +func (i *uint8Value) String() string { return fmt.Sprintf("%v", *i) } + +func uint8Conv(sval string) (interface{}, error) { + v, err := strconv.ParseUint(sval, 0, 8) + if err != nil { + return 0, err + } + return uint8(v), nil +} + +// GetUint8 return the uint8 value of a flag with the given name +func (f *FlagSet) GetUint8(name string) (uint8, error) { + val, err := f.getFlagType(name, "uint8", uint8Conv) + if err != nil { + return 0, err + } + return val.(uint8), nil +} + +// Uint8Var defines a uint8 flag with specified name, default value, and usage string. +// The argument p points to a uint8 variable in which to store the value of the flag. +func (f *FlagSet) Uint8Var(p *uint8, name string, value uint8, usage string) { + f.VarP(newUint8Value(value, p), name, "", usage) +} + +// Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) { + f.VarP(newUint8Value(value, p), name, shorthand, usage) +} + +// Uint8Var defines a uint8 flag with specified name, default value, and usage string. +// The argument p points to a uint8 variable in which to store the value of the flag. +func Uint8Var(p *uint8, name string, value uint8, usage string) { + CommandLine.VarP(newUint8Value(value, p), name, "", usage) +} + +// Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash. +func Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) { + CommandLine.VarP(newUint8Value(value, p), name, shorthand, usage) +} + +// Uint8 defines a uint8 flag with specified name, default value, and usage string. +// The return value is the address of a uint8 variable that stores the value of the flag. +func (f *FlagSet) Uint8(name string, value uint8, usage string) *uint8 { + p := new(uint8) + f.Uint8VarP(p, name, "", value, usage) + return p +} + +// Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash. +func (f *FlagSet) Uint8P(name, shorthand string, value uint8, usage string) *uint8 { + p := new(uint8) + f.Uint8VarP(p, name, shorthand, value, usage) + return p +} + +// Uint8 defines a uint8 flag with specified name, default value, and usage string. +// The return value is the address of a uint8 variable that stores the value of the flag. +func Uint8(name string, value uint8, usage string) *uint8 { + return CommandLine.Uint8P(name, "", value, usage) +} + +// Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash. +func Uint8P(name, shorthand string, value uint8, usage string) *uint8 { + return CommandLine.Uint8P(name, shorthand, value, usage) +} diff --git a/vendor/github.com/spf13/viper/LICENSE b/vendor/github.com/spf13/viper/LICENSE new file mode 100644 index 0000000..4527efb --- /dev/null +++ b/vendor/github.com/spf13/viper/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2014 Steve Francia + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE.
\ No newline at end of file diff --git a/vendor/github.com/spf13/viper/README.md b/vendor/github.com/spf13/viper/README.md new file mode 100644 index 0000000..cad242d --- /dev/null +++ b/vendor/github.com/spf13/viper/README.md @@ -0,0 +1,620 @@ + + +Go configuration with fangs! + +Many Go projects are built using Viper including: + +* [Hugo](http://gohugo.io) +* [EMC RexRay](http://rexray.readthedocs.org/en/stable/) +* [Imgur's Incus](https://github.com/Imgur/incus) +* [Nanobox](https://github.com/nanobox-io/nanobox)/[Nanopack](https://github.com/nanopack) +* [Docker Notary](https://github.com/docker/Notary) +* [BloomApi](https://www.bloomapi.com/) +* [DOIt](https://github.com/bryanl/doit) + + [](https://travis-ci.org/spf13/viper) [](https://gitter.im/spf13/viper?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) + + +## What is Viper? + +Viper is a complete configuration solution for go applications including 12 factor apps. It is designed +to work within an application, and can handle all types of configuration needs +and formats. It supports: + +* setting defaults +* reading from JSON, TOML, YAML, HCL, and Java properties config files +* live watching and re-reading of config files (optional) +* reading from environment variables +* reading from remote config systems (etcd or Consul), and watching changes +* reading from command line flags +* reading from buffer +* setting explicit values + +Viper can be thought of as a registry for all of your applications +configuration needs. + +## Why Viper? + +When building a modern application, you don’t want to worry about +configuration file formats; you want to focus on building awesome software. +Viper is here to help with that. + +Viper does the following for you: + +1. Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, or Java properties formats. +2. Provide a mechanism to set default values for your different + configuration options. +3. Provide a mechanism to set override values for options specified through + command line flags. +4. Provide an alias system to easily rename parameters without breaking existing + code. +5. Make it easy to tell the difference between when a user has provided a + command line or config file which is the same as the default. + +Viper uses the following precedence order. Each item takes precedence over the +item below it: + + * explicit call to Set + * flag + * env + * config + * key/value store + * default + +Viper configuration keys are case insensitive. + +## Putting Values into Viper + +### Establishing Defaults + +A good configuration system will support default values. A default value is not +required for a key, but it's useful in the event that a key hasn’t been set via +config file, environment variable, remote configuration or flag. + +Examples: + +```go +viper.SetDefault("ContentDir", "content") +viper.SetDefault("LayoutDir", "layouts") +viper.SetDefault("Taxonomies", map[string]string{"tag": "tags", "category": "categories"}) +``` + +### Reading Config Files + +Viper requires minimal configuration so it knows where to look for config files. +Viper supports JSON, TOML, YAML, HCL, and Java Properties files. Viper can search multiple paths, but +currently a single Viper instance only supports a single configuration file. +Viper does not default to any configuration search paths leaving defaults decision +to an application. + +Here is an example of how to use Viper to search for and read a configuration file. +None of the specific paths are required, but at least one path should be provided +where a configuration file is expected. + +```go +viper.SetConfigName("config") // name of config file (without extension) +viper.AddConfigPath("/etc/appname/") // path to look for the config file in +viper.AddConfigPath("$HOME/.appname") // call multiple times to add many search paths +viper.AddConfigPath(".") // optionally look for config in the working directory +err := viper.ReadInConfig() // Find and read the config file +if err != nil { // Handle errors reading the config file + panic(fmt.Errorf("Fatal error config file: %s \n", err)) +} +``` + +### Watching and re-reading config files + +Viper supports the ability to have your application live read a config file while running. + +Gone are the days of needing to restart a server to have a config take effect, +viper powered applications can read an update to a config file while running and +not miss a beat. + +Simply tell the viper instance to watchConfig. +Optionally you can provide a function for Viper to run each time a change occurs. + +**Make sure you add all of the configPaths prior to calling `WatchConfig()`** + +```go + viper.WatchConfig() + viper.OnConfigChange(func(e fsnotify.Event) { + fmt.Println("Config file changed:", e.Name) + }) +``` + +### Reading Config from io.Reader + +Viper predefines many configuration sources such as files, environment +variables, flags, and remote K/V store, but you are not bound to them. You can +also implement your own required configuration source and feed it to viper. + +```go +viper.SetConfigType("yaml") // or viper.SetConfigType("YAML") + +// any approach to require this configuration into your program. +var yamlExample = []byte(` +Hacker: true +name: steve +hobbies: +- skateboarding +- snowboarding +- go +clothing: + jacket: leather + trousers: denim +age: 35 +eyes : brown +beard: true +`) + +viper.ReadConfig(bytes.NewBuffer(yamlExample)) + +viper.Get("name") // this would be "steve" +``` + +### Setting Overrides + +These could be from a command line flag, or from your own application logic. + +```go +viper.Set("Verbose", true) +viper.Set("LogFile", LogFile) +``` + +### Registering and Using Aliases + +Aliases permit a single value to be referenced by multiple keys + +```go +viper.RegisterAlias("loud", "Verbose") + +viper.Set("verbose", true) // same result as next line +viper.Set("loud", true) // same result as prior line + +viper.GetBool("loud") // true +viper.GetBool("verbose") // true +``` + +### Working with Environment Variables + +Viper has full support for environment variables. This enables 12 factor +applications out of the box. There are four methods that exist to aid working +with ENV: + + * `AutomaticEnv()` + * `BindEnv(string...) : error` + * `SetEnvPrefix(string)` + * `SetEnvReplacer(string...) *strings.Replacer` + +_When working with ENV variables, it’s important to recognize that Viper +treats ENV variables as case sensitive._ + +Viper provides a mechanism to try to ensure that ENV variables are unique. By +using `SetEnvPrefix`, you can tell Viper to use add a prefix while reading from +the environment variables. Both `BindEnv` and `AutomaticEnv` will use this +prefix. + +`BindEnv` takes one or two parameters. The first parameter is the key name, the +second is the name of the environment variable. The name of the environment +variable is case sensitive. If the ENV variable name is not provided, then +Viper will automatically assume that the key name matches the ENV variable name, +but the ENV variable is IN ALL CAPS. When you explicitly provide the ENV +variable name, it **does not** automatically add the prefix. + +One important thing to recognize when working with ENV variables is that the +value will be read each time it is accessed. Viper does not fix the value when +the `BindEnv` is called. + +`AutomaticEnv` is a powerful helper especially when combined with +`SetEnvPrefix`. When called, Viper will check for an environment variable any +time a `viper.Get` request is made. It will apply the following rules. It will +check for a environment variable with a name matching the key uppercased and +prefixed with the `EnvPrefix` if set. + +`SetEnvReplacer` allows you to use a `strings.Replacer` object to rewrite Env +keys to an extent. This is useful if you want to use `-` or something in your +`Get()` calls, but want your environmental variables to use `_` delimiters. An +example of using it can be found in `viper_test.go`. + +#### Env example + +```go +SetEnvPrefix("spf") // will be uppercased automatically +BindEnv("id") + +os.Setenv("SPF_ID", "13") // typically done outside of the app + +id := Get("id") // 13 +``` + +### Working with Flags + +Viper has the ability to bind to flags. Specifically, Viper supports `Pflags` +as used in the [Cobra](https://github.com/spf13/cobra) library. + +Like `BindEnv`, the value is not set when the binding method is called, but when +it is accessed. This means you can bind as early as you want, even in an +`init()` function. + +The `BindPFlag()` method provides this functionality. + +Example: + +```go +serverCmd.Flags().Int("port", 1138, "Port to run Application server on") +viper.BindPFlag("port", serverCmd.Flags().Lookup("port")) +``` + +The use of [pflag](https://github.com/spf13/pflag/) in Viper does not preclude +the use of other packages that use the [flag](https://golang.org/pkg/flag/) +package from the standard library. The pflag package can handle the flags +defined for the flag package by importing these flags. This is accomplished +by a calling a convenience function provided by the pflag package called +AddGoFlagSet(). + +Example: + +```go +package main + +import ( + "flag" + "github.com/spf13/pflag" +) + +func main() { + pflag.CommandLine.AddGoFlagSet(flag.CommandLine) + pflag.Parse() + ... +} +``` + +#### Flag interfaces + +Viper provides two Go interfaces to bind other flag systems if you don't use `Pflags`. + +`FlagValue` represents a single flag. This is a very simple example on how to implement this interface: + +```go +type myFlag struct {} +func (f myFlag) IsChanged() { return false } +func (f myFlag) Name() { return "my-flag-name" } +func (f myFlag) ValueString() { return "my-flag-value" } +func (f myFlag) ValueType() { return "string" } +``` + +Once your flag implements this interface, you can simply tell Viper to bind it: + +```go +viper.BindFlagValue("my-flag-name", myFlag{}) +``` + +`FlagValueSet` represents a group of flags. This is a very simple example on how to implement this interface: + +```go +type myFlagSet struct { + flags []myFlag +} + +func (f myFlagSet) VisitAll(fn func(FlagValue)) { + for _, flag := range flags { + fn(flag) + } +} +``` + +Once your flag set implements this interface, you can simply tell Viper to bind it: + +```go +fSet := myFlagSet{ + flags: []myFlag{myFlag{}, myFlag{}}, +} +viper.BindFlagValues("my-flags", fSet) +``` + +### Remote Key/Value Store Support + +To enable remote support in Viper, do a blank import of the `viper/remote` +package: + +`import _ "github.com/spf13/viper/remote"` + +Viper will read a config string (as JSON, TOML, YAML or HCL) retrieved from a path +in a Key/Value store such as etcd or Consul. These values take precedence over +default values, but are overridden by configuration values retrieved from disk, +flags, or environment variables. + +Viper uses [crypt](https://github.com/xordataexchange/crypt) to retrieve +configuration from the K/V store, which means that you can store your +configuration values encrypted and have them automatically decrypted if you have +the correct gpg keyring. Encryption is optional. + +You can use remote configuration in conjunction with local configuration, or +independently of it. + +`crypt` has a command-line helper that you can use to put configurations in your +K/V store. `crypt` defaults to etcd on http://127.0.0.1:4001. + +```bash +$ go get github.com/xordataexchange/crypt/bin/crypt +$ crypt set -plaintext /config/hugo.json /Users/hugo/settings/config.json +``` + +Confirm that your value was set: + +```bash +$ crypt get -plaintext /config/hugo.json +``` + +See the `crypt` documentation for examples of how to set encrypted values, or +how to use Consul. + +### Remote Key/Value Store Example - Unencrypted + +```go +viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001","/config/hugo.json") +viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop" +err := viper.ReadRemoteConfig() +``` + +### Remote Key/Value Store Example - Encrypted + +```go +viper.AddSecureRemoteProvider("etcd","http://127.0.0.1:4001","/config/hugo.json","/etc/secrets/mykeyring.gpg") +viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop" +err := viper.ReadRemoteConfig() +``` + +### Watching Changes in etcd - Unencrypted + +```go +// alternatively, you can create a new viper instance. +var runtime_viper = viper.New() + +runtime_viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001", "/config/hugo.yml") +runtime_viper.SetConfigType("yaml") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop" + +// read from remote config the first time. +err := runtime_viper.ReadRemoteConfig() + +// unmarshal config +runtime_viper.Unmarshal(&runtime_conf) + +// open a goroutine to watch remote changes forever +go func(){ + for { + time.Sleep(time.Second * 5) // delay after each request + + // currently, only tested with etcd support + err := runtime_viper.WatchRemoteConfig() + if err != nil { + log.Errorf("unable to read remote config: %v", err) + continue + } + + // unmarshal new config into our runtime config struct. you can also use channel + // to implement a signal to notify the system of the changes + runtime_viper.Unmarshal(&runtime_conf) + } +}() +``` + +## Getting Values From Viper + +In Viper, there are a few ways to get a value depending on the value's type. +The following functions and methods exist: + + * `Get(key string) : interface{}` + * `GetBool(key string) : bool` + * `GetFloat64(key string) : float64` + * `GetInt(key string) : int` + * `GetString(key string) : string` + * `GetStringMap(key string) : map[string]interface{}` + * `GetStringMapString(key string) : map[string]string` + * `GetStringSlice(key string) : []string` + * `GetTime(key string) : time.Time` + * `GetDuration(key string) : time.Duration` + * `IsSet(key string) : bool` + +One important thing to recognize is that each Get function will return a zero +value if it’s not found. To check if a given key exists, the `IsSet()` method +has been provided. + +Example: +```go +viper.GetString("logfile") // case-insensitive Setting & Getting +if viper.GetBool("verbose") { + fmt.Println("verbose enabled") +} +``` +### Accessing nested keys + +The accessor methods also accept formatted paths to deeply nested keys. For +example, if the following JSON file is loaded: + +```json +{ + "host": { + "address": "localhost", + "port": 5799 + }, + "datastore": { + "metric": { + "host": "127.0.0.1", + "port": 3099 + }, + "warehouse": { + "host": "198.0.0.1", + "port": 2112 + } + } +} + +``` + +Viper can access a nested field by passing a `.` delimited path of keys: + +```go +GetString("datastore.metric.host") // (returns "127.0.0.1") +``` + +This obeys the precedence rules established above; the search for the root key +(in this example, `datastore`) will cascade through the remaining configuration +registries until found. The search for the sub-keys (`metric` and `host`), +however, will not. + +For example, if the `metric` key was not defined in the configuration loaded +from file, but was defined in the defaults, Viper would return the zero value. + +On the other hand, if the primary key was not defined, Viper would go through +the remaining registries looking for it. + +Lastly, if there exists a key that matches the delimited key path, its value +will be returned instead. E.g. + +```json +{ + "datastore.metric.host": "0.0.0.0", + "host": { + "address": "localhost", + "port": 5799 + }, + "datastore": { + "metric": { + "host": "127.0.0.1", + "port": 3099 + }, + "warehouse": { + "host": "198.0.0.1", + "port": 2112 + } + } +} + +GetString("datastore.metric.host") //returns "0.0.0.0" +``` + +### Extract sub-tree + +Extract sub-tree from Viper. + +For example, `viper` represents: + +```json +app: + cache1: + max-items: 100 + item-size: 64 + cache2: + max-items: 200 + item-size: 80 +``` + +After executing: + +```go +subv := viper.Sub("app.cache1") +``` + +`subv` represents: + +```json +max-items: 100 +item-size: 64 +``` + +Suppose we have: + +```go +func NewCache(cfg *Viper) *Cache {...} +``` + +which creates a cache based on config information formatted as `subv`. +Now it's easy to create these 2 caches separately as: + +```go +cfg1 := viper.Sub("app.cache1") +cache1 := NewCache(cfg1) + +cfg2 := viper.Sub("app.cache2") +cache2 := NewCache(cfg2) +``` + +### Unmarshaling + +You also have the option of Unmarshaling all or a specific value to a struct, map, +etc. + +There are two methods to do this: + + * `Unmarshal(rawVal interface{}) : error` + * `UnmarshalKey(key string, rawVal interface{}) : error` + +Example: + +```go +type config struct { + Port int + Name string + PathMap string `mapstructure:"path_map"` +} + +var C config + +err := Unmarshal(&C) +if err != nil { + t.Fatalf("unable to decode into struct, %v", err) +} +``` + +## Viper or Vipers? + +Viper comes ready to use out of the box. There is no configuration or +initialization needed to begin using Viper. Since most applications will want +to use a single central repository for their configuration, the viper package +provides this. It is similar to a singleton. + +In all of the examples above, they demonstrate using viper in it's singleton +style approach. + +### Working with multiple vipers + +You can also create many different vipers for use in your application. Each will +have it’s own unique set of configurations and values. Each can read from a +different config file, key value store, etc. All of the functions that viper +package supports are mirrored as methods on a viper. + +Example: + +```go +x := viper.New() +y := viper.New() + +x.SetDefault("ContentDir", "content") +y.SetDefault("ContentDir", "foobar") + +//... +``` + +When working with multiple vipers, it is up to the user to keep track of the +different vipers. + +## Q & A + +Q: Why not INI files? + +A: Ini files are pretty awful. There’s no standard format, and they are hard to +validate. Viper is designed to work with JSON, TOML or YAML files. If someone +really wants to add this feature, I’d be happy to merge it. It’s easy to specify +which formats your application will permit. + +Q: Why is it called “Viper”? + +A: Viper is designed to be a [companion](http://en.wikipedia.org/wiki/Viper_(G.I._Joe)) +to [Cobra](https://github.com/spf13/cobra). While both can operate completely +independently, together they make a powerful pair to handle much of your +application foundation needs. + +Q: Why is it called “Cobra”? + +A: Is there a better name for a [commander](http://en.wikipedia.org/wiki/Cobra_Commander)? diff --git a/vendor/github.com/spf13/viper/flags.go b/vendor/github.com/spf13/viper/flags.go new file mode 100644 index 0000000..dd32f4e --- /dev/null +++ b/vendor/github.com/spf13/viper/flags.go @@ -0,0 +1,57 @@ +package viper + +import "github.com/spf13/pflag" + +// FlagValueSet is an interface that users can implement +// to bind a set of flags to viper. +type FlagValueSet interface { + VisitAll(fn func(FlagValue)) +} + +// FlagValue is an interface that users can implement +// to bind different flags to viper. +type FlagValue interface { + HasChanged() bool + Name() string + ValueString() string + ValueType() string +} + +// pflagValueSet is a wrapper around *pflag.ValueSet +// that implements FlagValueSet. +type pflagValueSet struct { + flags *pflag.FlagSet +} + +// VisitAll iterates over all *pflag.Flag inside the *pflag.FlagSet. +func (p pflagValueSet) VisitAll(fn func(flag FlagValue)) { + p.flags.VisitAll(func(flag *pflag.Flag) { + fn(pflagValue{flag}) + }) +} + +// pflagValue is a wrapper aroung *pflag.flag +// that implements FlagValue +type pflagValue struct { + flag *pflag.Flag +} + +// HasChanges returns whether the flag has changes or not. +func (p pflagValue) HasChanged() bool { + return p.flag.Changed +} + +// Name returns the name of the flag. +func (p pflagValue) Name() string { + return p.flag.Name +} + +// ValueString returns the value of the flag as a string. +func (p pflagValue) ValueString() string { + return p.flag.Value.String() +} + +// ValueType returns the type of the flag as a string. +func (p pflagValue) ValueType() string { + return p.flag.Value.Type() +} diff --git a/vendor/github.com/spf13/viper/nohup.out b/vendor/github.com/spf13/viper/nohup.out new file mode 100644 index 0000000..8973bf2 --- /dev/null +++ b/vendor/github.com/spf13/viper/nohup.out @@ -0,0 +1 @@ +QProcess::start: Process is already running diff --git a/vendor/github.com/spf13/viper/util.go b/vendor/github.com/spf13/viper/util.go new file mode 100644 index 0000000..0cc4553 --- /dev/null +++ b/vendor/github.com/spf13/viper/util.go @@ -0,0 +1,219 @@ +// Copyright © 2014 Steve Francia <spf@spf13.com>. +// +// Use of this source code is governed by an MIT-style +// license that can be found in the LICENSE file. + +// Viper is a application configuration system. +// It believes that applications can be configured a variety of ways +// via flags, ENVIRONMENT variables, configuration files retrieved +// from the file system, or a remote key/value store. + +package viper + +import ( + "bytes" + "encoding/json" + "fmt" + "io" + "os" + "path/filepath" + "runtime" + "strings" + "unicode" + + "github.com/BurntSushi/toml" + "github.com/hashicorp/hcl" + "github.com/magiconair/properties" + "github.com/spf13/cast" + jww "github.com/spf13/jwalterweatherman" + "gopkg.in/yaml.v2" +) + +// Denotes failing to parse configuration file. +type ConfigParseError struct { + err error +} + +// Returns the formatted configuration error. +func (pe ConfigParseError) Error() string { + return fmt.Sprintf("While parsing config: %s", pe.err.Error()) +} + +func insensitiviseMap(m map[string]interface{}) { + for key, val := range m { + lower := strings.ToLower(key) + if key != lower { + delete(m, key) + m[lower] = val + } + } +} + +func absPathify(inPath string) string { + jww.INFO.Println("Trying to resolve absolute path to", inPath) + + if strings.HasPrefix(inPath, "$HOME") { + inPath = userHomeDir() + inPath[5:] + } + + if strings.HasPrefix(inPath, "$") { + end := strings.Index(inPath, string(os.PathSeparator)) + inPath = os.Getenv(inPath[1:end]) + inPath[end:] + } + + if filepath.IsAbs(inPath) { + return filepath.Clean(inPath) + } + + p, err := filepath.Abs(inPath) + if err == nil { + return filepath.Clean(p) + } else { + jww.ERROR.Println("Couldn't discover absolute path") + jww.ERROR.Println(err) + } + return "" +} + +// Check if File / Directory Exists +func exists(path string) (bool, error) { + _, err := os.Stat(path) + if err == nil { + return true, nil + } + if os.IsNotExist(err) { + return false, nil + } + return false, err +} + +func stringInSlice(a string, list []string) bool { + for _, b := range list { + if b == a { + return true + } + } + return false +} + +func userHomeDir() string { + if runtime.GOOS == "windows" { + home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH") + if home == "" { + home = os.Getenv("USERPROFILE") + } + return home + } + return os.Getenv("HOME") +} + +func findCWD() (string, error) { + serverFile, err := filepath.Abs(os.Args[0]) + + if err != nil { + return "", fmt.Errorf("Can't get absolute path for executable: %v", err) + } + + path := filepath.Dir(serverFile) + realFile, err := filepath.EvalSymlinks(serverFile) + + if err != nil { + if _, err = os.Stat(serverFile + ".exe"); err == nil { + realFile = filepath.Clean(serverFile + ".exe") + } + } + + if err == nil && realFile != serverFile { + path = filepath.Dir(realFile) + } + + return path, nil +} + +func unmarshallConfigReader(in io.Reader, c map[string]interface{}, configType string) error { + buf := new(bytes.Buffer) + buf.ReadFrom(in) + + switch strings.ToLower(configType) { + case "yaml", "yml": + if err := yaml.Unmarshal(buf.Bytes(), &c); err != nil { + return ConfigParseError{err} + } + + case "json": + if err := json.Unmarshal(buf.Bytes(), &c); err != nil { + return ConfigParseError{err} + } + + case "hcl": + obj, err := hcl.Parse(string(buf.Bytes())) + if err != nil { + return ConfigParseError{err} + } + if err = hcl.DecodeObject(&c, obj); err != nil { + return ConfigParseError{err} + } + + case "toml": + if _, err := toml.Decode(buf.String(), &c); err != nil { + return ConfigParseError{err} + } + + case "properties", "props", "prop": + var p *properties.Properties + var err error + if p, err = properties.Load(buf.Bytes(), properties.UTF8); err != nil { + return ConfigParseError{err} + } + for _, key := range p.Keys() { + value, _ := p.Get(key) + c[key] = value + } + } + + insensitiviseMap(c) + return nil +} + +func safeMul(a, b uint) uint { + c := a * b + if a > 1 && b > 1 && c/b != a { + return 0 + } + return c +} + +// parseSizeInBytes converts strings like 1GB or 12 mb into an unsigned integer number of bytes +func parseSizeInBytes(sizeStr string) uint { + sizeStr = strings.TrimSpace(sizeStr) + lastChar := len(sizeStr) - 1 + multiplier := uint(1) + + if lastChar > 0 { + if sizeStr[lastChar] == 'b' || sizeStr[lastChar] == 'B' { + if lastChar > 1 { + switch unicode.ToLower(rune(sizeStr[lastChar-1])) { + case 'k': + multiplier = 1 << 10 + sizeStr = strings.TrimSpace(sizeStr[:lastChar-1]) + case 'm': + multiplier = 1 << 20 + sizeStr = strings.TrimSpace(sizeStr[:lastChar-1]) + case 'g': + multiplier = 1 << 30 + sizeStr = strings.TrimSpace(sizeStr[:lastChar-1]) + default: + multiplier = 1 + sizeStr = strings.TrimSpace(sizeStr[:lastChar]) + } + } + } + } + + size := cast.ToInt(sizeStr) + if size < 0 { + size = 0 + } + + return safeMul(uint(size), multiplier) +} diff --git a/vendor/github.com/spf13/viper/viper.go b/vendor/github.com/spf13/viper/viper.go new file mode 100644 index 0000000..a2633b0 --- /dev/null +++ b/vendor/github.com/spf13/viper/viper.go @@ -0,0 +1,1293 @@ +// Copyright © 2014 Steve Francia <spf@spf13.com>. +// +// Use of this source code is governed by an MIT-style +// license that can be found in the LICENSE file. + +// Viper is a application configuration system. +// It believes that applications can be configured a variety of ways +// via flags, ENVIRONMENT variables, configuration files retrieved +// from the file system, or a remote key/value store. + +// Each item takes precedence over the item below it: + +// overrides +// flag +// env +// config +// key/value store +// default + +package viper + +import ( + "bytes" + "fmt" + "io" + "io/ioutil" + "log" + "os" + "path/filepath" + "reflect" + "strings" + "time" + + "github.com/fsnotify/fsnotify" + "github.com/mitchellh/mapstructure" + "github.com/spf13/cast" + jww "github.com/spf13/jwalterweatherman" + "github.com/spf13/pflag" +) + +var v *Viper + +func init() { + v = New() +} + +type remoteConfigFactory interface { + Get(rp RemoteProvider) (io.Reader, error) + Watch(rp RemoteProvider) (io.Reader, error) +} + +// RemoteConfig is optional, see the remote package +var RemoteConfig remoteConfigFactory + +// Denotes encountering an unsupported +// configuration filetype. +type UnsupportedConfigError string + +// Returns the formatted configuration error. +func (str UnsupportedConfigError) Error() string { + return fmt.Sprintf("Unsupported Config Type %q", string(str)) +} + +// Denotes encountering an unsupported remote +// provider. Currently only etcd and Consul are +// supported. +type UnsupportedRemoteProviderError string + +// Returns the formatted remote provider error. +func (str UnsupportedRemoteProviderError) Error() string { + return fmt.Sprintf("Unsupported Remote Provider Type %q", string(str)) +} + +// Denotes encountering an error while trying to +// pull the configuration from the remote provider. +type RemoteConfigError string + +// Returns the formatted remote provider error +func (rce RemoteConfigError) Error() string { + return fmt.Sprintf("Remote Configurations Error: %s", string(rce)) +} + +// Denotes failing to find configuration file. +type ConfigFileNotFoundError struct { + name, locations string +} + +// Returns the formatted configuration error. +func (fnfe ConfigFileNotFoundError) Error() string { + return fmt.Sprintf("Config File %q Not Found in %q", fnfe.name, fnfe.locations) +} + +// Viper is a prioritized configuration registry. It +// maintains a set of configuration sources, fetches +// values to populate those, and provides them according +// to the source's priority. +// The priority of the sources is the following: +// 1. overrides +// 2. flags +// 3. env. variables +// 4. config file +// 5. key/value store +// 6. defaults +// +// For example, if values from the following sources were loaded: +// +// Defaults : { +// "secret": "", +// "user": "default", +// "endpoint": "https://localhost" +// } +// Config : { +// "user": "root" +// "secret": "defaultsecret" +// } +// Env : { +// "secret": "somesecretkey" +// } +// +// The resulting config will have the following values: +// +// { +// "secret": "somesecretkey", +// "user": "root", +// "endpoint": "https://localhost" +// } +type Viper struct { + // Delimiter that separates a list of keys + // used to access a nested value in one go + keyDelim string + + // A set of paths to look for the config file in + configPaths []string + + // A set of remote providers to search for the configuration + remoteProviders []*defaultRemoteProvider + + // Name of file to look for inside the path + configName string + configFile string + configType string + envPrefix string + + automaticEnvApplied bool + envKeyReplacer *strings.Replacer + + config map[string]interface{} + override map[string]interface{} + defaults map[string]interface{} + kvstore map[string]interface{} + pflags map[string]FlagValue + env map[string]string + aliases map[string]string + typeByDefValue bool + + onConfigChange func(fsnotify.Event) +} + +// Returns an initialized Viper instance. +func New() *Viper { + v := new(Viper) + v.keyDelim = "." + v.configName = "config" + v.config = make(map[string]interface{}) + v.override = make(map[string]interface{}) + v.defaults = make(map[string]interface{}) + v.kvstore = make(map[string]interface{}) + v.pflags = make(map[string]FlagValue) + v.env = make(map[string]string) + v.aliases = make(map[string]string) + v.typeByDefValue = false + + return v +} + +// Intended for testing, will reset all to default settings. +// In the public interface for the viper package so applications +// can use it in their testing as well. +func Reset() { + v = New() + SupportedExts = []string{"json", "toml", "yaml", "yml", "hcl"} + SupportedRemoteProviders = []string{"etcd", "consul"} +} + +type defaultRemoteProvider struct { + provider string + endpoint string + path string + secretKeyring string +} + +func (rp defaultRemoteProvider) Provider() string { + return rp.provider +} + +func (rp defaultRemoteProvider) Endpoint() string { + return rp.endpoint +} + +func (rp defaultRemoteProvider) Path() string { + return rp.path +} + +func (rp defaultRemoteProvider) SecretKeyring() string { + return rp.secretKeyring +} + +// RemoteProvider stores the configuration necessary +// to connect to a remote key/value store. +// Optional secretKeyring to unencrypt encrypted values +// can be provided. +type RemoteProvider interface { + Provider() string + Endpoint() string + Path() string + SecretKeyring() string +} + +// Universally supported extensions. +var SupportedExts []string = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl"} + +// Universally supported remote providers. +var SupportedRemoteProviders []string = []string{"etcd", "consul"} + +func OnConfigChange(run func(in fsnotify.Event)) { v.OnConfigChange(run) } +func (v *Viper) OnConfigChange(run func(in fsnotify.Event)) { + v.onConfigChange = run +} + +func WatchConfig() { v.WatchConfig() } +func (v *Viper) WatchConfig() { + go func() { + watcher, err := fsnotify.NewWatcher() + if err != nil { + log.Fatal(err) + } + defer watcher.Close() + + // we have to watch the entire directory to pick up renames/atomic saves in a cross-platform way + configFile := filepath.Clean(v.getConfigFile()) + configDir, _ := filepath.Split(configFile) + + done := make(chan bool) + go func() { + for { + select { + case event := <-watcher.Events: + // we only care about the config file + if filepath.Clean(event.Name) == configFile { + if event.Op&fsnotify.Write == fsnotify.Write || event.Op&fsnotify.Create == fsnotify.Create { + err := v.ReadInConfig() + if err != nil { + log.Println("error:", err) + } + v.onConfigChange(event) + } + } + case err := <-watcher.Errors: + log.Println("error:", err) + } + } + }() + + watcher.Add(configDir) + <-done + }() +} + +// Explicitly define the path, name and extension of the config file +// Viper will use this and not check any of the config paths +func SetConfigFile(in string) { v.SetConfigFile(in) } +func (v *Viper) SetConfigFile(in string) { + if in != "" { + v.configFile = in + } +} + +// Define a prefix that ENVIRONMENT variables will use. +// E.g. if your prefix is "spf", the env registry +// will look for env. variables that start with "SPF_" +func SetEnvPrefix(in string) { v.SetEnvPrefix(in) } +func (v *Viper) SetEnvPrefix(in string) { + if in != "" { + v.envPrefix = in + } +} + +func (v *Viper) mergeWithEnvPrefix(in string) string { + if v.envPrefix != "" { + return strings.ToUpper(v.envPrefix + "_" + in) + } + + return strings.ToUpper(in) +} + +// TODO: should getEnv logic be moved into find(). Can generalize the use of +// rewriting keys many things, Ex: Get('someKey') -> some_key +// (cammel case to snake case for JSON keys perhaps) + +// getEnv s a wrapper around os.Getenv which replaces characters in the original +// key. This allows env vars which have different keys then the config object +// keys +func (v *Viper) getEnv(key string) string { + if v.envKeyReplacer != nil { + key = v.envKeyReplacer.Replace(key) + } + return os.Getenv(key) +} + +// Return the file used to populate the config registry +func ConfigFileUsed() string { return v.ConfigFileUsed() } +func (v *Viper) ConfigFileUsed() string { return v.configFile } + +// Add a path for Viper to search for the config file in. +// Can be called multiple times to define multiple search paths. +func AddConfigPath(in string) { v.AddConfigPath(in) } +func (v *Viper) AddConfigPath(in string) { + if in != "" { + absin := absPathify(in) + jww.INFO.Println("adding", absin, "to paths to search") + if !stringInSlice(absin, v.configPaths) { + v.configPaths = append(v.configPaths, absin) + } + } +} + +// AddRemoteProvider adds a remote configuration source. +// Remote Providers are searched in the order they are added. +// provider is a string value, "etcd" or "consul" are currently supported. +// endpoint is the url. etcd requires http://ip:port consul requires ip:port +// path is the path in the k/v store to retrieve configuration +// To retrieve a config file called myapp.json from /configs/myapp.json +// you should set path to /configs and set config name (SetConfigName()) to +// "myapp" +func AddRemoteProvider(provider, endpoint, path string) error { + return v.AddRemoteProvider(provider, endpoint, path) +} +func (v *Viper) AddRemoteProvider(provider, endpoint, path string) error { + if !stringInSlice(provider, SupportedRemoteProviders) { + return UnsupportedRemoteProviderError(provider) + } + if provider != "" && endpoint != "" { + jww.INFO.Printf("adding %s:%s to remote provider list", provider, endpoint) + rp := &defaultRemoteProvider{ + endpoint: endpoint, + provider: provider, + path: path, + } + if !v.providerPathExists(rp) { + v.remoteProviders = append(v.remoteProviders, rp) + } + } + return nil +} + +// AddSecureRemoteProvider adds a remote configuration source. +// Secure Remote Providers are searched in the order they are added. +// provider is a string value, "etcd" or "consul" are currently supported. +// endpoint is the url. etcd requires http://ip:port consul requires ip:port +// secretkeyring is the filepath to your openpgp secret keyring. e.g. /etc/secrets/myring.gpg +// path is the path in the k/v store to retrieve configuration +// To retrieve a config file called myapp.json from /configs/myapp.json +// you should set path to /configs and set config name (SetConfigName()) to +// "myapp" +// Secure Remote Providers are implemented with github.com/xordataexchange/crypt +func AddSecureRemoteProvider(provider, endpoint, path, secretkeyring string) error { + return v.AddSecureRemoteProvider(provider, endpoint, path, secretkeyring) +} + +func (v *Viper) AddSecureRemoteProvider(provider, endpoint, path, secretkeyring string) error { + if !stringInSlice(provider, SupportedRemoteProviders) { + return UnsupportedRemoteProviderError(provider) + } + if provider != "" && endpoint != "" { + jww.INFO.Printf("adding %s:%s to remote provider list", provider, endpoint) + rp := &defaultRemoteProvider{ + endpoint: endpoint, + provider: provider, + path: path, + secretKeyring: secretkeyring, + } + if !v.providerPathExists(rp) { + v.remoteProviders = append(v.remoteProviders, rp) + } + } + return nil +} + +func (v *Viper) providerPathExists(p *defaultRemoteProvider) bool { + for _, y := range v.remoteProviders { + if reflect.DeepEqual(y, p) { + return true + } + } + return false +} + +func (v *Viper) searchMap(source map[string]interface{}, path []string) interface{} { + + if len(path) == 0 { + return source + } + + var ok bool + var next interface{} + for k, v := range source { + if strings.ToLower(k) == strings.ToLower(path[0]) { + ok = true + next = v + break + } + } + + if ok { + switch next.(type) { + case map[interface{}]interface{}: + return v.searchMap(cast.ToStringMap(next), path[1:]) + case map[string]interface{}: + // Type assertion is safe here since it is only reached + // if the type of `next` is the same as the type being asserted + return v.searchMap(next.(map[string]interface{}), path[1:]) + default: + return next + } + } else { + return nil + } +} + +// SetTypeByDefaultValue enables or disables the inference of a key value's +// type when the Get function is used based upon a key's default value as +// opposed to the value returned based on the normal fetch logic. +// +// For example, if a key has a default value of []string{} and the same key +// is set via an environment variable to "a b c", a call to the Get function +// would return a string slice for the key if the key's type is inferred by +// the default value and the Get function would return: +// +// []string {"a", "b", "c"} +// +// Otherwise the Get function would return: +// +// "a b c" +func SetTypeByDefaultValue(enable bool) { v.SetTypeByDefaultValue(enable) } +func (v *Viper) SetTypeByDefaultValue(enable bool) { + v.typeByDefValue = enable +} + +// Viper is essentially repository for configurations +// Get can retrieve any value given the key to use +// Get has the behavior of returning the value associated with the first +// place from where it is set. Viper will check in the following order: +// override, flag, env, config file, key/value store, default +// +// Get returns an interface. For a specific value use one of the Get____ methods. +func Get(key string) interface{} { return v.Get(key) } +func (v *Viper) Get(key string) interface{} { + path := strings.Split(key, v.keyDelim) + + lcaseKey := strings.ToLower(key) + val := v.find(lcaseKey) + + if val == nil { + source := v.find(strings.ToLower(path[0])) + if source != nil { + if reflect.TypeOf(source).Kind() == reflect.Map { + val = v.searchMap(cast.ToStringMap(source), path[1:]) + } + } + } + + // if no other value is returned and a flag does exist for the value, + // get the flag's value even if the flag's value has not changed + if val == nil { + if flag, exists := v.pflags[lcaseKey]; exists { + jww.TRACE.Println(key, "get pflag default", val) + switch flag.ValueType() { + case "int", "int8", "int16", "int32", "int64": + val = cast.ToInt(flag.ValueString()) + case "bool": + val = cast.ToBool(flag.ValueString()) + default: + val = flag.ValueString() + } + } + } + + if val == nil { + return nil + } + + var valType interface{} + if !v.typeByDefValue { + valType = val + } else { + defVal, defExists := v.defaults[lcaseKey] + if defExists { + valType = defVal + } else { + valType = val + } + } + + switch valType.(type) { + case bool: + return cast.ToBool(val) + case string: + return cast.ToString(val) + case int64, int32, int16, int8, int: + return cast.ToInt(val) + case float64, float32: + return cast.ToFloat64(val) + case time.Time: + return cast.ToTime(val) + case time.Duration: + return cast.ToDuration(val) + case []string: + return cast.ToStringSlice(val) + } + return val +} + +// Returns new Viper instance representing a sub tree of this instance +func Sub(key string) *Viper { return v.Sub(key) } +func (v *Viper) Sub(key string) *Viper { + subv := New() + data := v.Get(key) + if reflect.TypeOf(data).Kind() == reflect.Map { + subv.config = cast.ToStringMap(data) + return subv + } else { + return nil + } +} + +// Returns the value associated with the key as a string +func GetString(key string) string { return v.GetString(key) } +func (v *Viper) GetString(key string) string { + return cast.ToString(v.Get(key)) +} + +// Returns the value associated with the key as a boolean +func GetBool(key string) bool { return v.GetBool(key) } +func (v *Viper) GetBool(key string) bool { + return cast.ToBool(v.Get(key)) +} + +// Returns the value associated with the key as an integer +func GetInt(key string) int { return v.GetInt(key) } +func (v *Viper) GetInt(key string) int { + return cast.ToInt(v.Get(key)) +} + +// Returns the value associated with the key as a float64 +func GetFloat64(key string) float64 { return v.GetFloat64(key) } +func (v *Viper) GetFloat64(key string) float64 { + return cast.ToFloat64(v.Get(key)) +} + +// Returns the value associated with the key as time +func GetTime(key string) time.Time { return v.GetTime(key) } +func (v *Viper) GetTime(key string) time.Time { + return cast.ToTime(v.Get(key)) +} + +// Returns the value associated with the key as a duration +func GetDuration(key string) time.Duration { return v.GetDuration(key) } +func (v *Viper) GetDuration(key string) time.Duration { + return cast.ToDuration(v.Get(key)) +} + +// Returns the value associated with the key as a slice of strings +func GetStringSlice(key string) []string { return v.GetStringSlice(key) } +func (v *Viper) GetStringSlice(key string) []string { + return cast.ToStringSlice(v.Get(key)) +} + +// Returns the value associated with the key as a map of interfaces +func GetStringMap(key string) map[string]interface{} { return v.GetStringMap(key) } +func (v *Viper) GetStringMap(key string) map[string]interface{} { + return cast.ToStringMap(v.Get(key)) +} + +// Returns the value associated with the key as a map of strings +func GetStringMapString(key string) map[string]string { return v.GetStringMapString(key) } +func (v *Viper) GetStringMapString(key string) map[string]string { + return cast.ToStringMapString(v.Get(key)) +} + +// Returns the value associated with the key as a map to a slice of strings. +func GetStringMapStringSlice(key string) map[string][]string { return v.GetStringMapStringSlice(key) } +func (v *Viper) GetStringMapStringSlice(key string) map[string][]string { + return cast.ToStringMapStringSlice(v.Get(key)) +} + +// Returns the size of the value associated with the given key +// in bytes. +func GetSizeInBytes(key string) uint { return v.GetSizeInBytes(key) } +func (v *Viper) GetSizeInBytes(key string) uint { + sizeStr := cast.ToString(v.Get(key)) + return parseSizeInBytes(sizeStr) +} + +// Takes a single key and unmarshals it into a Struct +func UnmarshalKey(key string, rawVal interface{}) error { return v.UnmarshalKey(key, rawVal) } +func (v *Viper) UnmarshalKey(key string, rawVal interface{}) error { + return mapstructure.Decode(v.Get(key), rawVal) +} + +// Unmarshals the config into a Struct. Make sure that the tags +// on the fields of the structure are properly set. +func Unmarshal(rawVal interface{}) error { return v.Unmarshal(rawVal) } +func (v *Viper) Unmarshal(rawVal interface{}) error { + err := mapstructure.WeakDecode(v.AllSettings(), rawVal) + + if err != nil { + return err + } + + v.insensitiviseMaps() + + return nil +} + +// A wrapper around mapstructure.Decode that mimics the WeakDecode functionality +// while erroring on non existing vals in the destination struct +func weakDecodeExact(input, output interface{}) error { + config := &mapstructure.DecoderConfig{ + ErrorUnused: true, + Metadata: nil, + Result: output, + WeaklyTypedInput: true, + } + + decoder, err := mapstructure.NewDecoder(config) + if err != nil { + return err + } + return decoder.Decode(input) +} + +// Unmarshals the config into a Struct, erroring if a field is non-existant +// in the destination struct +func (v *Viper) UnmarshalExact(rawVal interface{}) error { + err := weakDecodeExact(v.AllSettings(), rawVal) + + if err != nil { + return err + } + + v.insensitiviseMaps() + + return nil +} + +// Bind a full flag set to the configuration, using each flag's long +// name as the config key. +func BindPFlags(flags *pflag.FlagSet) (err error) { return v.BindPFlags(flags) } +func (v *Viper) BindPFlags(flags *pflag.FlagSet) (err error) { + return v.BindFlagValues(pflagValueSet{flags}) +} + +// Bind a specific key to a pflag (as used by cobra) +// Example(where serverCmd is a Cobra instance): +// +// serverCmd.Flags().Int("port", 1138, "Port to run Application server on") +// Viper.BindPFlag("port", serverCmd.Flags().Lookup("port")) +// +func BindPFlag(key string, flag *pflag.Flag) (err error) { return v.BindPFlag(key, flag) } +func (v *Viper) BindPFlag(key string, flag *pflag.Flag) (err error) { + return v.BindFlagValue(key, pflagValue{flag}) +} + +// Bind a full FlagValue set to the configuration, using each flag's long +// name as the config key. +func BindFlagValues(flags FlagValueSet) (err error) { return v.BindFlagValues(flags) } +func (v *Viper) BindFlagValues(flags FlagValueSet) (err error) { + flags.VisitAll(func(flag FlagValue) { + if err = v.BindFlagValue(flag.Name(), flag); err != nil { + return + } + }) + return nil +} + +// Bind a specific key to a FlagValue. +// Example(where serverCmd is a Cobra instance): +// +// serverCmd.Flags().Int("port", 1138, "Port to run Application server on") +// Viper.BindFlagValue("port", serverCmd.Flags().Lookup("port")) +// +func BindFlagValue(key string, flag FlagValue) (err error) { return v.BindFlagValue(key, flag) } +func (v *Viper) BindFlagValue(key string, flag FlagValue) (err error) { + if flag == nil { + return fmt.Errorf("flag for %q is nil", key) + } + v.pflags[strings.ToLower(key)] = flag + return nil +} + +// Binds a Viper key to a ENV variable +// ENV variables are case sensitive +// If only a key is provided, it will use the env key matching the key, uppercased. +// EnvPrefix will be used when set when env name is not provided. +func BindEnv(input ...string) (err error) { return v.BindEnv(input...) } +func (v *Viper) BindEnv(input ...string) (err error) { + var key, envkey string + if len(input) == 0 { + return fmt.Errorf("BindEnv missing key to bind to") + } + + key = strings.ToLower(input[0]) + + if len(input) == 1 { + envkey = v.mergeWithEnvPrefix(key) + } else { + envkey = input[1] + } + + v.env[key] = envkey + + return nil +} + +// Given a key, find the value +// Viper will check in the following order: +// flag, env, config file, key/value store, default +// Viper will check to see if an alias exists first +func (v *Viper) find(key string) interface{} { + var val interface{} + var exists bool + + // if the requested key is an alias, then return the proper key + key = v.realKey(key) + + // PFlag Override first + flag, exists := v.pflags[key] + if exists && flag.HasChanged() { + jww.TRACE.Println(key, "found in override (via pflag):", flag.ValueString()) + switch flag.ValueType() { + case "int", "int8", "int16", "int32", "int64": + return cast.ToInt(flag.ValueString()) + case "bool": + return cast.ToBool(flag.ValueString()) + default: + return flag.ValueString() + } + } + + val, exists = v.override[key] + if exists { + jww.TRACE.Println(key, "found in override:", val) + return val + } + + if v.automaticEnvApplied { + // even if it hasn't been registered, if automaticEnv is used, + // check any Get request + if val = v.getEnv(v.mergeWithEnvPrefix(key)); val != "" { + jww.TRACE.Println(key, "found in environment with val:", val) + return val + } + } + + envkey, exists := v.env[key] + if exists { + jww.TRACE.Println(key, "registered as env var", envkey) + if val = v.getEnv(envkey); val != "" { + jww.TRACE.Println(envkey, "found in environment with val:", val) + return val + } else { + jww.TRACE.Println(envkey, "env value unset:") + } + } + + val, exists = v.config[key] + if exists { + jww.TRACE.Println(key, "found in config:", val) + return val + } + + // Test for nested config parameter + if strings.Contains(key, v.keyDelim) { + path := strings.Split(key, v.keyDelim) + + source := v.find(path[0]) + if source != nil { + if reflect.TypeOf(source).Kind() == reflect.Map { + val := v.searchMap(cast.ToStringMap(source), path[1:]) + jww.TRACE.Println(key, "found in nested config:", val) + return val + } + } + } + + val, exists = v.kvstore[key] + if exists { + jww.TRACE.Println(key, "found in key/value store:", val) + return val + } + + val, exists = v.defaults[key] + if exists { + jww.TRACE.Println(key, "found in defaults:", val) + return val + } + + return nil +} + +// Check to see if the key has been set in any of the data locations +func IsSet(key string) bool { return v.IsSet(key) } +func (v *Viper) IsSet(key string) bool { + path := strings.Split(key, v.keyDelim) + + lcaseKey := strings.ToLower(key) + val := v.find(lcaseKey) + + if val == nil { + source := v.find(strings.ToLower(path[0])) + if source != nil { + if reflect.TypeOf(source).Kind() == reflect.Map { + val = v.searchMap(cast.ToStringMap(source), path[1:]) + } + } + } + + return val != nil +} + +// Have Viper check ENV variables for all +// keys set in config, default & flags +func AutomaticEnv() { v.AutomaticEnv() } +func (v *Viper) AutomaticEnv() { + v.automaticEnvApplied = true +} + +// SetEnvKeyReplacer sets the strings.Replacer on the viper object +// Useful for mapping an environmental variable to a key that does +// not match it. +func SetEnvKeyReplacer(r *strings.Replacer) { v.SetEnvKeyReplacer(r) } +func (v *Viper) SetEnvKeyReplacer(r *strings.Replacer) { + v.envKeyReplacer = r +} + +// Aliases provide another accessor for the same key. +// This enables one to change a name without breaking the application +func RegisterAlias(alias string, key string) { v.RegisterAlias(alias, key) } +func (v *Viper) RegisterAlias(alias string, key string) { + v.registerAlias(alias, strings.ToLower(key)) +} + +func (v *Viper) registerAlias(alias string, key string) { + alias = strings.ToLower(alias) + if alias != key && alias != v.realKey(key) { + _, exists := v.aliases[alias] + + if !exists { + // if we alias something that exists in one of the maps to another + // name, we'll never be able to get that value using the original + // name, so move the config value to the new realkey. + if val, ok := v.config[alias]; ok { + delete(v.config, alias) + v.config[key] = val + } + if val, ok := v.kvstore[alias]; ok { + delete(v.kvstore, alias) + v.kvstore[key] = val + } + if val, ok := v.defaults[alias]; ok { + delete(v.defaults, alias) + v.defaults[key] = val + } + if val, ok := v.override[alias]; ok { + delete(v.override, alias) + v.override[key] = val + } + v.aliases[alias] = key + } + } else { + jww.WARN.Println("Creating circular reference alias", alias, key, v.realKey(key)) + } +} + +func (v *Viper) realKey(key string) string { + newkey, exists := v.aliases[key] + if exists { + jww.DEBUG.Println("Alias", key, "to", newkey) + return v.realKey(newkey) + } else { + return key + } +} + +// Check to see if the given key (or an alias) is in the config file +func InConfig(key string) bool { return v.InConfig(key) } +func (v *Viper) InConfig(key string) bool { + // if the requested key is an alias, then return the proper key + key = v.realKey(key) + + _, exists := v.config[key] + return exists +} + +// Set the default value for this key. +// Default only used when no value is provided by the user via flag, config or ENV. +func SetDefault(key string, value interface{}) { v.SetDefault(key, value) } +func (v *Viper) SetDefault(key string, value interface{}) { + // If alias passed in, then set the proper default + key = v.realKey(strings.ToLower(key)) + v.defaults[key] = value +} + +// Sets the value for the key in the override regiser. +// Will be used instead of values obtained via +// flags, config file, ENV, default, or key/value store +func Set(key string, value interface{}) { v.Set(key, value) } +func (v *Viper) Set(key string, value interface{}) { + // If alias passed in, then set the proper override + key = v.realKey(strings.ToLower(key)) + v.override[key] = value +} + +// Viper will discover and load the configuration file from disk +// and key/value stores, searching in one of the defined paths. +func ReadInConfig() error { return v.ReadInConfig() } +func (v *Viper) ReadInConfig() error { + jww.INFO.Println("Attempting to read in config file") + if !stringInSlice(v.getConfigType(), SupportedExts) { + return UnsupportedConfigError(v.getConfigType()) + } + + file, err := ioutil.ReadFile(v.getConfigFile()) + if err != nil { + return err + } + + v.config = make(map[string]interface{}) + + return v.unmarshalReader(bytes.NewReader(file), v.config) +} + +// MergeInConfig merges a new configuration with an existing config. +func MergeInConfig() error { return v.MergeInConfig() } +func (v *Viper) MergeInConfig() error { + jww.INFO.Println("Attempting to merge in config file") + if !stringInSlice(v.getConfigType(), SupportedExts) { + return UnsupportedConfigError(v.getConfigType()) + } + + file, err := ioutil.ReadFile(v.getConfigFile()) + if err != nil { + return err + } + + return v.MergeConfig(bytes.NewReader(file)) +} + +// Viper will read a configuration file, setting existing keys to nil if the +// key does not exist in the file. +func ReadConfig(in io.Reader) error { return v.ReadConfig(in) } +func (v *Viper) ReadConfig(in io.Reader) error { + v.config = make(map[string]interface{}) + return v.unmarshalReader(in, v.config) +} + +// MergeConfig merges a new configuration with an existing config. +func MergeConfig(in io.Reader) error { return v.MergeConfig(in) } +func (v *Viper) MergeConfig(in io.Reader) error { + if v.config == nil { + v.config = make(map[string]interface{}) + } + cfg := make(map[string]interface{}) + if err := v.unmarshalReader(in, cfg); err != nil { + return err + } + mergeMaps(cfg, v.config, nil) + return nil +} + +func keyExists(k string, m map[string]interface{}) string { + lk := strings.ToLower(k) + for mk := range m { + lmk := strings.ToLower(mk) + if lmk == lk { + return mk + } + } + return "" +} + +func castToMapStringInterface( + src map[interface{}]interface{}) map[string]interface{} { + tgt := map[string]interface{}{} + for k, v := range src { + tgt[fmt.Sprintf("%v", k)] = v + } + return tgt +} + +// mergeMaps merges two maps. The `itgt` parameter is for handling go-yaml's +// insistence on parsing nested structures as `map[interface{}]interface{}` +// instead of using a `string` as the key for nest structures beyond one level +// deep. Both map types are supported as there is a go-yaml fork that uses +// `map[string]interface{}` instead. +func mergeMaps( + src, tgt map[string]interface{}, itgt map[interface{}]interface{}) { + for sk, sv := range src { + tk := keyExists(sk, tgt) + if tk == "" { + jww.TRACE.Printf("tk=\"\", tgt[%s]=%v", sk, sv) + tgt[sk] = sv + if itgt != nil { + itgt[sk] = sv + } + continue + } + + tv, ok := tgt[tk] + if !ok { + jww.TRACE.Printf("tgt[%s] != ok, tgt[%s]=%v", tk, sk, sv) + tgt[sk] = sv + if itgt != nil { + itgt[sk] = sv + } + continue + } + + svType := reflect.TypeOf(sv) + tvType := reflect.TypeOf(tv) + if svType != tvType { + jww.ERROR.Printf( + "svType != tvType; key=%s, st=%v, tt=%v, sv=%v, tv=%v", + sk, svType, tvType, sv, tv) + continue + } + + jww.TRACE.Printf("processing key=%s, st=%v, tt=%v, sv=%v, tv=%v", + sk, svType, tvType, sv, tv) + + switch ttv := tv.(type) { + case map[interface{}]interface{}: + jww.TRACE.Printf("merging maps (must convert)") + tsv := sv.(map[interface{}]interface{}) + ssv := castToMapStringInterface(tsv) + stv := castToMapStringInterface(ttv) + mergeMaps(ssv, stv, ttv) + case map[string]interface{}: + jww.TRACE.Printf("merging maps") + mergeMaps(sv.(map[string]interface{}), ttv, nil) + default: + jww.TRACE.Printf("setting value") + tgt[tk] = sv + if itgt != nil { + itgt[tk] = sv + } + } + } +} + +// func ReadBufConfig(buf *bytes.Buffer) error { return v.ReadBufConfig(buf) } +// func (v *Viper) ReadBufConfig(buf *bytes.Buffer) error { +// v.config = make(map[string]interface{}) +// return v.unmarshalReader(buf, v.config) +// } + +// Attempts to get configuration from a remote source +// and read it in the remote configuration registry. +func ReadRemoteConfig() error { return v.ReadRemoteConfig() } +func (v *Viper) ReadRemoteConfig() error { + err := v.getKeyValueConfig() + if err != nil { + return err + } + return nil +} + +func WatchRemoteConfig() error { return v.WatchRemoteConfig() } +func (v *Viper) WatchRemoteConfig() error { + err := v.watchKeyValueConfig() + if err != nil { + return err + } + return nil +} + +// Unmarshall a Reader into a map +// Should probably be an unexported function +func unmarshalReader(in io.Reader, c map[string]interface{}) error { + return v.unmarshalReader(in, c) +} + +func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error { + return unmarshallConfigReader(in, c, v.getConfigType()) +} + +func (v *Viper) insensitiviseMaps() { + insensitiviseMap(v.config) + insensitiviseMap(v.defaults) + insensitiviseMap(v.override) + insensitiviseMap(v.kvstore) +} + +// retrieve the first found remote configuration +func (v *Viper) getKeyValueConfig() error { + if RemoteConfig == nil { + return RemoteConfigError("Enable the remote features by doing a blank import of the viper/remote package: '_ github.com/spf13/viper/remote'") + } + + for _, rp := range v.remoteProviders { + val, err := v.getRemoteConfig(rp) + if err != nil { + continue + } + v.kvstore = val + return nil + } + return RemoteConfigError("No Files Found") +} + +func (v *Viper) getRemoteConfig(provider *defaultRemoteProvider) (map[string]interface{}, error) { + + reader, err := RemoteConfig.Get(provider) + if err != nil { + return nil, err + } + err = v.unmarshalReader(reader, v.kvstore) + return v.kvstore, err +} + +// retrieve the first found remote configuration +func (v *Viper) watchKeyValueConfig() error { + for _, rp := range v.remoteProviders { + val, err := v.watchRemoteConfig(rp) + if err != nil { + continue + } + v.kvstore = val + return nil + } + return RemoteConfigError("No Files Found") +} + +func (v *Viper) watchRemoteConfig(provider *defaultRemoteProvider) (map[string]interface{}, error) { + reader, err := RemoteConfig.Watch(provider) + if err != nil { + return nil, err + } + err = v.unmarshalReader(reader, v.kvstore) + return v.kvstore, err +} + +// Return all keys regardless where they are set +func AllKeys() []string { return v.AllKeys() } +func (v *Viper) AllKeys() []string { + m := map[string]struct{}{} + + for key, _ := range v.defaults { + m[strings.ToLower(key)] = struct{}{} + } + + for key, _ := range v.pflags { + m[strings.ToLower(key)] = struct{}{} + } + + for key, _ := range v.env { + m[strings.ToLower(key)] = struct{}{} + } + + for key, _ := range v.config { + m[strings.ToLower(key)] = struct{}{} + } + + for key, _ := range v.kvstore { + m[strings.ToLower(key)] = struct{}{} + } + + for key, _ := range v.override { + m[strings.ToLower(key)] = struct{}{} + } + + for key, _ := range v.aliases { + m[strings.ToLower(key)] = struct{}{} + } + + a := []string{} + for x, _ := range m { + a = append(a, x) + } + + return a +} + +// Return all settings as a map[string]interface{} +func AllSettings() map[string]interface{} { return v.AllSettings() } +func (v *Viper) AllSettings() map[string]interface{} { + m := map[string]interface{}{} + for _, x := range v.AllKeys() { + m[x] = v.Get(x) + } + + return m +} + +// Name for the config file. +// Does not include extension. +func SetConfigName(in string) { v.SetConfigName(in) } +func (v *Viper) SetConfigName(in string) { + if in != "" { + v.configName = in + } +} + +// Sets the type of the configuration returned by the +// remote source, e.g. "json". +func SetConfigType(in string) { v.SetConfigType(in) } +func (v *Viper) SetConfigType(in string) { + if in != "" { + v.configType = in + } +} + +func (v *Viper) getConfigType() string { + if v.configType != "" { + return v.configType + } + + cf := v.getConfigFile() + ext := filepath.Ext(cf) + + if len(ext) > 1 { + return ext[1:] + } else { + return "" + } +} + +func (v *Viper) getConfigFile() string { + // if explicitly set, then use it + if v.configFile != "" { + return v.configFile + } + + cf, err := v.findConfigFile() + if err != nil { + return "" + } + + v.configFile = cf + return v.getConfigFile() +} + +func (v *Viper) searchInPath(in string) (filename string) { + jww.DEBUG.Println("Searching for config in ", in) + for _, ext := range SupportedExts { + jww.DEBUG.Println("Checking for", filepath.Join(in, v.configName+"."+ext)) + if b, _ := exists(filepath.Join(in, v.configName+"."+ext)); b { + jww.DEBUG.Println("Found: ", filepath.Join(in, v.configName+"."+ext)) + return filepath.Join(in, v.configName+"."+ext) + } + } + + return "" +} + +// search all configPaths for any config file. +// Returns the first path that exists (and is a config file) +func (v *Viper) findConfigFile() (string, error) { + + jww.INFO.Println("Searching for config in ", v.configPaths) + + for _, cp := range v.configPaths { + file := v.searchInPath(cp) + if file != "" { + return file, nil + } + } + return "", ConfigFileNotFoundError{v.configName, fmt.Sprintf("%s", v.configPaths)} +} + +// Prints all configuration registries for debugging +// purposes. +func Debug() { v.Debug() } +func (v *Viper) Debug() { + fmt.Println("Aliases:") + fmt.Printf("Aliases:\n%#v\n", v.aliases) + fmt.Printf("Override:\n%#v\n", v.override) + fmt.Printf("PFlags:\n%#v\n", v.pflags) + fmt.Printf("Env:\n%#v\n", v.env) + fmt.Printf("Key/Value Store:\n%#v\n", v.kvstore) + fmt.Printf("Config:\n%#v\n", v.config) + fmt.Printf("Defaults:\n%#v\n", v.defaults) +} |