1 files changed, 256 insertions, 0 deletions
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)
+}