129 lines
3.2 KiB
Go
129 lines
3.2 KiB
Go
// mxj - A collection of map[string]interface{} and associated XML and JSON utilities.
|
|
// Copyright 2012-2014 Charles Banning. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file
|
|
|
|
package mxj
|
|
|
|
import (
|
|
"fmt"
|
|
"sort"
|
|
)
|
|
|
|
const (
|
|
Cast = true // for clarity - e.g., mxj.NewMapXml(doc, mxj.Cast)
|
|
SafeEncoding = true // ditto - e.g., mv.Json(mxj.SafeEncoding)
|
|
)
|
|
|
|
type Map map[string]interface{}
|
|
|
|
// Allocate a Map.
|
|
func New() Map {
|
|
m := make(map[string]interface{}, 0)
|
|
return m
|
|
}
|
|
|
|
// Cast a Map to map[string]interface{}
|
|
func (mv Map) Old() map[string]interface{} {
|
|
return mv
|
|
}
|
|
|
|
// Return a copy of mv as a newly allocated Map. If the Map only contains string,
|
|
// numeric, map[string]interface{}, and []interface{} values, then it can be thought
|
|
// of as a "deep copy." Copying a structure (or structure reference) value is subject
|
|
// to the noted restrictions.
|
|
// NOTE: If 'mv' includes structure values with, possibly, JSON encoding tags
|
|
// then only public fields of the structure are in the new Map - and with
|
|
// keys that conform to any encoding tag instructions. The structure itself will
|
|
// be represented as a map[string]interface{} value.
|
|
func (mv Map) Copy() (Map, error) {
|
|
// this is the poor-man's deep copy
|
|
// not efficient, but it works
|
|
j, jerr := mv.Json()
|
|
// must handle, we don't know how mv got built
|
|
if jerr != nil {
|
|
return nil, jerr
|
|
}
|
|
return NewMapJson(j)
|
|
}
|
|
|
|
// --------------- StringIndent ... from x2j.WriteMap -------------
|
|
|
|
// Pretty print a Map.
|
|
func (mv Map) StringIndent(offset ...int) string {
|
|
return writeMap(map[string]interface{}(mv), true, true, offset...)
|
|
}
|
|
|
|
// Pretty print a Map without the value type information - just key:value entries.
|
|
func (mv Map) StringIndentNoTypeInfo(offset ...int) string {
|
|
return writeMap(map[string]interface{}(mv), false, true, offset...)
|
|
}
|
|
|
|
// writeMap - dumps the map[string]interface{} for examination.
|
|
// 'typeInfo' causes value type to be printed.
|
|
// 'offset' is initial indentation count; typically: Write(m).
|
|
func writeMap(m interface{}, typeInfo, root bool, offset ...int) string {
|
|
var indent int
|
|
if len(offset) == 1 {
|
|
indent = offset[0]
|
|
}
|
|
|
|
var s string
|
|
switch m.(type) {
|
|
case []interface{}:
|
|
if typeInfo {
|
|
s += "[[]interface{}]"
|
|
}
|
|
for _, v := range m.([]interface{}) {
|
|
s += "\n"
|
|
for i := 0; i < indent; i++ {
|
|
s += " "
|
|
}
|
|
s += writeMap(v, typeInfo, false, indent+1)
|
|
}
|
|
case map[string]interface{}:
|
|
list := make([][2]string, len(m.(map[string]interface{})))
|
|
var n int
|
|
for k, v := range m.(map[string]interface{}) {
|
|
list[n][0] = k
|
|
list[n][1] = writeMap(v, typeInfo, false, indent+1)
|
|
n++
|
|
}
|
|
sort.Sort(mapList(list))
|
|
for _, v := range list {
|
|
if root {
|
|
root = false
|
|
} else {
|
|
s += "\n"
|
|
}
|
|
for i := 0; i < indent; i++ {
|
|
s += " "
|
|
}
|
|
s += v[0] + " : " + v[1]
|
|
}
|
|
default:
|
|
if typeInfo {
|
|
s += fmt.Sprintf("[%T] %+v", m, m)
|
|
} else {
|
|
s += fmt.Sprintf("%+v", m)
|
|
}
|
|
}
|
|
return s
|
|
}
|
|
|
|
// ======================== utility ===============
|
|
|
|
type mapList [][2]string
|
|
|
|
func (ml mapList) Len() int {
|
|
return len(ml)
|
|
}
|
|
|
|
func (ml mapList) Swap(i, j int) {
|
|
ml[i], ml[j] = ml[j], ml[i]
|
|
}
|
|
|
|
func (ml mapList) Less(i, j int) bool {
|
|
return ml[i][0] <= ml[j][0]
|
|
}
|