From 8c12c6939aab9106db14ec2d11d983bc5b29fb2c Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Sun, 7 Jul 2019 21:33:44 +0100 Subject: Switch to modules --- vendor/github.com/davecgh/go-spew/spew/dump.go | 509 ------------------------- 1 file changed, 509 deletions(-) delete mode 100644 vendor/github.com/davecgh/go-spew/spew/dump.go (limited to 'vendor/github.com/davecgh/go-spew/spew/dump.go') diff --git a/vendor/github.com/davecgh/go-spew/spew/dump.go b/vendor/github.com/davecgh/go-spew/spew/dump.go deleted file mode 100644 index f78d89f..0000000 --- a/vendor/github.com/davecgh/go-spew/spew/dump.go +++ /dev/null @@ -1,509 +0,0 @@ -/* - * Copyright (c) 2013-2016 Dave Collins - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -package spew - -import ( - "bytes" - "encoding/hex" - "fmt" - "io" - "os" - "reflect" - "regexp" - "strconv" - "strings" -) - -var ( - // uint8Type is a reflect.Type representing a uint8. It is used to - // convert cgo types to uint8 slices for hexdumping. - uint8Type = reflect.TypeOf(uint8(0)) - - // cCharRE is a regular expression that matches a cgo char. - // It is used to detect character arrays to hexdump them. - cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`) - - // cUnsignedCharRE is a regular expression that matches a cgo unsigned - // char. It is used to detect unsigned character arrays to hexdump - // them. - cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`) - - // cUint8tCharRE is a regular expression that matches a cgo uint8_t. - // It is used to detect uint8_t arrays to hexdump them. - cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`) -) - -// dumpState contains information about the state of a dump operation. -type dumpState struct { - w io.Writer - depth int - pointers map[uintptr]int - ignoreNextType bool - ignoreNextIndent bool - cs *ConfigState -} - -// indent performs indentation according to the depth level and cs.Indent -// option. -func (d *dumpState) indent() { - if d.ignoreNextIndent { - d.ignoreNextIndent = false - return - } - d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth)) -} - -// unpackValue returns values inside of non-nil interfaces when possible. -// This is useful for data types like structs, arrays, slices, and maps which -// can contain varying types packed inside an interface. -func (d *dumpState) unpackValue(v reflect.Value) reflect.Value { - if v.Kind() == reflect.Interface && !v.IsNil() { - v = v.Elem() - } - return v -} - -// dumpPtr handles formatting of pointers by indirecting them as necessary. -func (d *dumpState) dumpPtr(v reflect.Value) { - // Remove pointers at or below the current depth from map used to detect - // circular refs. - for k, depth := range d.pointers { - if depth >= d.depth { - delete(d.pointers, k) - } - } - - // Keep list of all dereferenced pointers to show later. - pointerChain := make([]uintptr, 0) - - // Figure out how many levels of indirection there are by dereferencing - // pointers and unpacking interfaces down the chain while detecting circular - // references. - nilFound := false - cycleFound := false - indirects := 0 - ve := v - for ve.Kind() == reflect.Ptr { - if ve.IsNil() { - nilFound = true - break - } - indirects++ - addr := ve.Pointer() - pointerChain = append(pointerChain, addr) - if pd, ok := d.pointers[addr]; ok && pd < d.depth { - cycleFound = true - indirects-- - break - } - d.pointers[addr] = d.depth - - ve = ve.Elem() - if ve.Kind() == reflect.Interface { - if ve.IsNil() { - nilFound = true - break - } - ve = ve.Elem() - } - } - - // Display type information. - d.w.Write(openParenBytes) - d.w.Write(bytes.Repeat(asteriskBytes, indirects)) - d.w.Write([]byte(ve.Type().String())) - d.w.Write(closeParenBytes) - - // Display pointer information. - if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 { - d.w.Write(openParenBytes) - for i, addr := range pointerChain { - if i > 0 { - d.w.Write(pointerChainBytes) - } - printHexPtr(d.w, addr) - } - d.w.Write(closeParenBytes) - } - - // Display dereferenced value. - d.w.Write(openParenBytes) - switch { - case nilFound: - d.w.Write(nilAngleBytes) - - case cycleFound: - d.w.Write(circularBytes) - - default: - d.ignoreNextType = true - d.dump(ve) - } - d.w.Write(closeParenBytes) -} - -// dumpSlice handles formatting of arrays and slices. Byte (uint8 under -// reflection) arrays and slices are dumped in hexdump -C fashion. -func (d *dumpState) dumpSlice(v reflect.Value) { - // Determine whether this type should be hex dumped or not. Also, - // for types which should be hexdumped, try to use the underlying data - // first, then fall back to trying to convert them to a uint8 slice. - var buf []uint8 - doConvert := false - doHexDump := false - numEntries := v.Len() - if numEntries > 0 { - vt := v.Index(0).Type() - vts := vt.String() - switch { - // C types that need to be converted. - case cCharRE.MatchString(vts): - fallthrough - case cUnsignedCharRE.MatchString(vts): - fallthrough - case cUint8tCharRE.MatchString(vts): - doConvert = true - - // Try to use existing uint8 slices and fall back to converting - // and copying if that fails. - case vt.Kind() == reflect.Uint8: - // We need an addressable interface to convert the type - // to a byte slice. However, the reflect package won't - // give us an interface on certain things like - // unexported struct fields in order to enforce - // visibility rules. We use unsafe, when available, to - // bypass these restrictions since this package does not - // mutate the values. - vs := v - if !vs.CanInterface() || !vs.CanAddr() { - vs = unsafeReflectValue(vs) - } - if !UnsafeDisabled { - vs = vs.Slice(0, numEntries) - - // Use the existing uint8 slice if it can be - // type asserted. - iface := vs.Interface() - if slice, ok := iface.([]uint8); ok { - buf = slice - doHexDump = true - break - } - } - - // The underlying data needs to be converted if it can't - // be type asserted to a uint8 slice. - doConvert = true - } - - // Copy and convert the underlying type if needed. - if doConvert && vt.ConvertibleTo(uint8Type) { - // Convert and copy each element into a uint8 byte - // slice. - buf = make([]uint8, numEntries) - for i := 0; i < numEntries; i++ { - vv := v.Index(i) - buf[i] = uint8(vv.Convert(uint8Type).Uint()) - } - doHexDump = true - } - } - - // Hexdump the entire slice as needed. - if doHexDump { - indent := strings.Repeat(d.cs.Indent, d.depth) - str := indent + hex.Dump(buf) - str = strings.Replace(str, "\n", "\n"+indent, -1) - str = strings.TrimRight(str, d.cs.Indent) - d.w.Write([]byte(str)) - return - } - - // Recursively call dump for each item. - for i := 0; i < numEntries; i++ { - d.dump(d.unpackValue(v.Index(i))) - if i < (numEntries - 1) { - d.w.Write(commaNewlineBytes) - } else { - d.w.Write(newlineBytes) - } - } -} - -// dump is the main workhorse for dumping a value. It uses the passed reflect -// value to figure out what kind of object we are dealing with and formats it -// appropriately. It is a recursive function, however circular data structures -// are detected and handled properly. -func (d *dumpState) dump(v reflect.Value) { - // Handle invalid reflect values immediately. - kind := v.Kind() - if kind == reflect.Invalid { - d.w.Write(invalidAngleBytes) - return - } - - // Handle pointers specially. - if kind == reflect.Ptr { - d.indent() - d.dumpPtr(v) - return - } - - // Print type information unless already handled elsewhere. - if !d.ignoreNextType { - d.indent() - d.w.Write(openParenBytes) - d.w.Write([]byte(v.Type().String())) - d.w.Write(closeParenBytes) - d.w.Write(spaceBytes) - } - d.ignoreNextType = false - - // Display length and capacity if the built-in len and cap functions - // work with the value's kind and the len/cap itself is non-zero. - valueLen, valueCap := 0, 0 - switch v.Kind() { - case reflect.Array, reflect.Slice, reflect.Chan: - valueLen, valueCap = v.Len(), v.Cap() - case reflect.Map, reflect.String: - valueLen = v.Len() - } - if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 { - d.w.Write(openParenBytes) - if valueLen != 0 { - d.w.Write(lenEqualsBytes) - printInt(d.w, int64(valueLen), 10) - } - if !d.cs.DisableCapacities && valueCap != 0 { - if valueLen != 0 { - d.w.Write(spaceBytes) - } - d.w.Write(capEqualsBytes) - printInt(d.w, int64(valueCap), 10) - } - d.w.Write(closeParenBytes) - d.w.Write(spaceBytes) - } - - // Call Stringer/error interfaces if they exist and the handle methods flag - // is enabled - if !d.cs.DisableMethods { - if (kind != reflect.Invalid) && (kind != reflect.Interface) { - if handled := handleMethods(d.cs, d.w, v); handled { - return - } - } - } - - switch kind { - case reflect.Invalid: - // Do nothing. We should never get here since invalid has already - // been handled above. - - case reflect.Bool: - printBool(d.w, v.Bool()) - - case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int: - printInt(d.w, v.Int(), 10) - - case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint: - printUint(d.w, v.Uint(), 10) - - case reflect.Float32: - printFloat(d.w, v.Float(), 32) - - case reflect.Float64: - printFloat(d.w, v.Float(), 64) - - case reflect.Complex64: - printComplex(d.w, v.Complex(), 32) - - case reflect.Complex128: - printComplex(d.w, v.Complex(), 64) - - case reflect.Slice: - if v.IsNil() { - d.w.Write(nilAngleBytes) - break - } - fallthrough - - case reflect.Array: - d.w.Write(openBraceNewlineBytes) - d.depth++ - if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) { - d.indent() - d.w.Write(maxNewlineBytes) - } else { - d.dumpSlice(v) - } - d.depth-- - d.indent() - d.w.Write(closeBraceBytes) - - case reflect.String: - d.w.Write([]byte(strconv.Quote(v.String()))) - - case reflect.Interface: - // The only time we should get here is for nil interfaces due to - // unpackValue calls. - if v.IsNil() { - d.w.Write(nilAngleBytes) - } - - case reflect.Ptr: - // Do nothing. We should never get here since pointers have already - // been handled above. - - case reflect.Map: - // nil maps should be indicated as different than empty maps - if v.IsNil() { - d.w.Write(nilAngleBytes) - break - } - - d.w.Write(openBraceNewlineBytes) - d.depth++ - if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) { - d.indent() - d.w.Write(maxNewlineBytes) - } else { - numEntries := v.Len() - keys := v.MapKeys() - if d.cs.SortKeys { - sortValues(keys, d.cs) - } - for i, key := range keys { - d.dump(d.unpackValue(key)) - d.w.Write(colonSpaceBytes) - d.ignoreNextIndent = true - d.dump(d.unpackValue(v.MapIndex(key))) - if i < (numEntries - 1) { - d.w.Write(commaNewlineBytes) - } else { - d.w.Write(newlineBytes) - } - } - } - d.depth-- - d.indent() - d.w.Write(closeBraceBytes) - - case reflect.Struct: - d.w.Write(openBraceNewlineBytes) - d.depth++ - if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) { - d.indent() - d.w.Write(maxNewlineBytes) - } else { - vt := v.Type() - numFields := v.NumField() - for i := 0; i < numFields; i++ { - d.indent() - vtf := vt.Field(i) - d.w.Write([]byte(vtf.Name)) - d.w.Write(colonSpaceBytes) - d.ignoreNextIndent = true - d.dump(d.unpackValue(v.Field(i))) - if i < (numFields - 1) { - d.w.Write(commaNewlineBytes) - } else { - d.w.Write(newlineBytes) - } - } - } - d.depth-- - d.indent() - d.w.Write(closeBraceBytes) - - case reflect.Uintptr: - printHexPtr(d.w, uintptr(v.Uint())) - - case reflect.UnsafePointer, reflect.Chan, reflect.Func: - printHexPtr(d.w, v.Pointer()) - - // There were not any other types at the time this code was written, but - // fall back to letting the default fmt package handle it in case any new - // types are added. - default: - if v.CanInterface() { - fmt.Fprintf(d.w, "%v", v.Interface()) - } else { - fmt.Fprintf(d.w, "%v", v.String()) - } - } -} - -// fdump is a helper function to consolidate the logic from the various public -// methods which take varying writers and config states. -func fdump(cs *ConfigState, w io.Writer, a ...interface{}) { - for _, arg := range a { - if arg == nil { - w.Write(interfaceBytes) - w.Write(spaceBytes) - w.Write(nilAngleBytes) - w.Write(newlineBytes) - continue - } - - d := dumpState{w: w, cs: cs} - d.pointers = make(map[uintptr]int) - d.dump(reflect.ValueOf(arg)) - d.w.Write(newlineBytes) - } -} - -// Fdump formats and displays the passed arguments to io.Writer w. It formats -// exactly the same as Dump. -func Fdump(w io.Writer, a ...interface{}) { - fdump(&Config, w, a...) -} - -// Sdump returns a string with the passed arguments formatted exactly the same -// as Dump. -func Sdump(a ...interface{}) string { - var buf bytes.Buffer - fdump(&Config, &buf, a...) - return buf.String() -} - -/* -Dump displays the passed parameters to standard out with newlines, customizable -indentation, and additional debug information such as complete types and all -pointer addresses used to indirect to the final value. It provides the -following features over the built-in printing facilities provided by the fmt -package: - - * Pointers are dereferenced and followed - * Circular data structures are detected and handled properly - * Custom Stringer/error interfaces are optionally invoked, including - on unexported types - * Custom types which only implement the Stringer/error interfaces via - a pointer receiver are optionally invoked when passing non-pointer - variables - * Byte arrays and slices are dumped like the hexdump -C command which - includes offsets, byte values in hex, and ASCII output - -The configuration options are controlled by an exported package global, -spew.Config. See ConfigState for options documentation. - -See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to -get the formatted result as a string. -*/ -func Dump(a ...interface{}) { - fdump(&Config, os.Stdout, a...) -} -- cgit v1.2.3