/
gjson_api_new_load.go
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/
gjson_api_new_load.go
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// Copyright 2017 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gjson
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"reflect"
"github.com/gogf/gf/encoding/gini"
"github.com/gogf/gf/encoding/gtoml"
"github.com/gogf/gf/encoding/gxml"
"github.com/gogf/gf/encoding/gyaml"
"github.com/gogf/gf/internal/rwmutex"
"github.com/gogf/gf/os/gfcache"
"github.com/gogf/gf/os/gfile"
"github.com/gogf/gf/text/gregex"
"github.com/gogf/gf/util/gconv"
)
// New creates a Json object with any variable type of <data>, but <data> should be a map
// or slice for data access reason, or it will make no sense.
//
// The parameter <safe> specifies whether using this Json object in concurrent-safe context,
// which is false in default.
func New(data interface{}, safe ...bool) *Json {
return NewWithTag(data, "json", safe...)
}
// NewWithTag creates a Json object with any variable type of <data>, but <data> should be a map
// or slice for data access reason, or it will make no sense.
//
// The parameter <tags> specifies priority tags for struct conversion to map, multiple tags joined
// with char ','.
//
// The parameter <safe> specifies whether using this Json object in concurrent-safe context, which
// is false in default.
func NewWithTag(data interface{}, tags string, safe ...bool) *Json {
j := (*Json)(nil)
switch data.(type) {
case string, []byte:
if r, err := LoadContent(gconv.Bytes(data)); err == nil {
j = r
} else {
j = &Json{
p: &data,
c: byte(gDEFAULT_SPLIT_CHAR),
vc: false,
}
}
default:
rv := reflect.ValueOf(data)
kind := rv.Kind()
if kind == reflect.Ptr {
rv = rv.Elem()
kind = rv.Kind()
}
switch kind {
case reflect.Slice, reflect.Array:
i := interface{}(nil)
i = gconv.Interfaces(data)
j = &Json{
p: &i,
c: byte(gDEFAULT_SPLIT_CHAR),
vc: false,
}
case reflect.Map, reflect.Struct:
i := interface{}(nil)
// Note that it uses Map function implementing the converting.
// Note that it here should not use MapDeep function if you really know what it means.
i = gconv.MapDeep(data, tags)
j = &Json{
p: &i,
c: byte(gDEFAULT_SPLIT_CHAR),
vc: false,
}
default:
j = &Json{
p: &data,
c: byte(gDEFAULT_SPLIT_CHAR),
vc: false,
}
}
}
j.mu = rwmutex.New(safe...)
return j
}
// Load loads content from specified file <path>, and creates a Json object from its content.
func Load(path string, safe ...bool) (*Json, error) {
if p, err := gfile.Search(path); err != nil {
return nil, err
} else {
path = p
}
return doLoadContent(gfile.Ext(path), gfcache.GetBinContents(path), safe...)
}
// LoadJson creates a Json object from given JSON format content.
func LoadJson(data interface{}, safe ...bool) (*Json, error) {
return doLoadContent("json", gconv.Bytes(data), safe...)
}
// LoadXml creates a Json object from given XML format content.
func LoadXml(data interface{}, safe ...bool) (*Json, error) {
return doLoadContent("xml", gconv.Bytes(data), safe...)
}
// LoadIni creates a Json object from given INI format content.
func LoadIni(data interface{}, safe ...bool) (*Json, error) {
return doLoadContent("ini", gconv.Bytes(data), safe...)
}
// LoadYaml creates a Json object from given YAML format content.
func LoadYaml(data interface{}, safe ...bool) (*Json, error) {
return doLoadContent("yaml", gconv.Bytes(data), safe...)
}
// LoadToml creates a Json object from given TOML format content.
func LoadToml(data interface{}, safe ...bool) (*Json, error) {
return doLoadContent("toml", gconv.Bytes(data), safe...)
}
// doLoadContent creates a Json object from given content.
// It supports data content type as follows:
// JSON, XML, INI, YAML and TOML.
func doLoadContent(dataType string, data []byte, safe ...bool) (*Json, error) {
var err error
var result interface{}
if len(data) == 0 {
return New(nil, safe...), nil
}
if dataType == "" {
dataType = checkDataType(data)
}
switch dataType {
case "json", ".json", ".js":
case "xml", ".xml":
if data, err = gxml.ToJson(data); err != nil {
return nil, err
}
case "yml", "yaml", ".yml", ".yaml":
if data, err = gyaml.ToJson(data); err != nil {
return nil, err
}
case "toml", ".toml":
if data, err = gtoml.ToJson(data); err != nil {
return nil, err
}
case "ini", ".ini":
if data, err = gini.ToJson(data); err != nil {
return nil, err
}
default:
err = errors.New("unsupported type for loading")
}
if err != nil {
return nil, err
}
decoder := json.NewDecoder(bytes.NewReader(data))
// Do not use number, it converts float64 to json.Number type,
// which actually a string type. It causes converting issue for other data formats,
// for example: yaml.
//decoder.UseNumber()
if err := decoder.Decode(&result); err != nil {
return nil, err
}
switch result.(type) {
case string, []byte:
return nil, fmt.Errorf(`json decoding failed for content: %s`, string(data))
}
return New(result, safe...), nil
}
// LoadContent creates a Json object from given content, it checks the data type of <content>
// automatically, supporting data content type as follows:
// JSON, XML, INI, YAML and TOML.
func LoadContent(data interface{}, safe ...bool) (*Json, error) {
content := gconv.Bytes(data)
if len(content) == 0 {
return New(nil, safe...), nil
}
return doLoadContent(checkDataType(content), content, safe...)
}
// checkDataType automatically checks and returns the data type for <content>.
func checkDataType(content []byte) string {
if json.Valid(content) {
return "json"
} else if gregex.IsMatch(`^<.+>[\S\s]+<.+>$`, content) {
return "xml"
} else if gregex.IsMatch(`^[\s\t]*[\w\-]+\s*:\s*.+`, content) || gregex.IsMatch(`\n[\s\t]*[\w\-]+\s*:\s*.+`, content) {
return "yml"
} else if (gregex.IsMatch(`^[\s\t\[*\]].?*[\w\-]+\s*=\s*.+`, content) || gregex.IsMatch(`\n[\s\t\[*\]]*[\w\-]+\s*=\s*.+`, content)) && gregex.IsMatch(`\n[\s\t]*[\w\-]+\s*=*\"*.+\"`, content) == false && gregex.IsMatch(`^[\s\t]*[\w\-]+\s*=*\"*.+\"`, content) == false {
return "ini"
} else if gregex.IsMatch(`^[\s\t]*[\w\-\."]+\s*=\s*.+`, content) || gregex.IsMatch(`\n[\s\t]*[\w\-\."]+\s*=\s*.+`, content) {
return "toml"
} else {
return ""
}
}