155 lines
3.5 KiB
Go
155 lines
3.5 KiB
Go
// Beego (http://beego.me/)
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//
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// @description beego is an open-source, high-performance web framework for the Go programming language.
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//
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// @link http://github.com/astaxie/beego for the canonical source repository
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//
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// @license http://github.com/astaxie/beego/blob/master/LICENSE
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//
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// @authors astaxie
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package config
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import (
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"bytes"
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"encoding/json"
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"errors"
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"io/ioutil"
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"log"
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"os"
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"strings"
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"sync"
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"github.com/astaxie/beego/config"
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"github.com/beego/goyaml2"
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)
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// YAMLConfig is a yaml config parser and implements Config interface.
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type YAMLConfig struct {
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}
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// Parse returns a ConfigContainer with parsed yaml config map.
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func (yaml *YAMLConfig) Parse(filename string) (config.ConfigContainer, error) {
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y := &YAMLConfigContainer{
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data: make(map[string]interface{}),
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}
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cnf, err := ReadYmlReader(filename)
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if err != nil {
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return nil, err
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}
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y.data = cnf
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return y, nil
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}
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// Read yaml file to map.
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// if json like, use json package, unless goyaml2 package.
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func ReadYmlReader(path string) (cnf map[string]interface{}, err error) {
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err = nil
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f, err := os.Open(path)
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if err != nil {
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return
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}
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defer f.Close()
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err = nil
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buf, err := ioutil.ReadAll(f)
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if err != nil || len(buf) < 3 {
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return
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}
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if string(buf[0:1]) == "{" {
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log.Println("Look lile a Json, try it")
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err = json.Unmarshal(buf, &cnf)
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if err == nil {
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log.Println("It is Json Map")
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return
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}
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}
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_map, _err := goyaml2.Read(bytes.NewBuffer(buf))
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if _err != nil {
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log.Println("Goyaml2 ERR>", string(buf), _err)
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//err = goyaml.Unmarshal(buf, &cnf)
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err = _err
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return
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}
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if _map == nil {
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log.Println("Goyaml2 output nil? Pls report bug\n" + string(buf))
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}
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cnf, ok := _map.(map[string]interface{})
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if !ok {
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log.Println("Not a Map? >> ", string(buf), _map)
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cnf = nil
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}
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return
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}
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// A Config represents the yaml configuration.
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type YAMLConfigContainer struct {
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data map[string]interface{}
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sync.Mutex
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}
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// Bool returns the boolean value for a given key.
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func (c *YAMLConfigContainer) Bool(key string) (bool, error) {
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if v, ok := c.data[key].(bool); ok {
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return v, nil
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}
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return false, errors.New("not bool value")
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}
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// Int returns the integer value for a given key.
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func (c *YAMLConfigContainer) Int(key string) (int, error) {
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if v, ok := c.data[key].(int64); ok {
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return int(v), nil
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}
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return 0, errors.New("not int value")
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}
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// Int64 returns the int64 value for a given key.
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func (c *YAMLConfigContainer) Int64(key string) (int64, error) {
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if v, ok := c.data[key].(int64); ok {
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return v, nil
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}
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return 0, errors.New("not bool value")
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}
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// Float returns the float value for a given key.
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func (c *YAMLConfigContainer) Float(key string) (float64, error) {
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if v, ok := c.data[key].(float64); ok {
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return v, nil
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}
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return 0.0, errors.New("not float64 value")
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}
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// String returns the string value for a given key.
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func (c *YAMLConfigContainer) String(key string) string {
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if v, ok := c.data[key].(string); ok {
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return v
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}
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return ""
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}
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// Strings returns the []string value for a given key.
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func (c *YAMLConfigContainer) Strings(key string) []string {
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return strings.Split(c.String(key), ";")
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}
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// WriteValue writes a new value for key.
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func (c *YAMLConfigContainer) Set(key, val string) error {
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c.Lock()
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defer c.Unlock()
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c.data[key] = val
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return nil
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}
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// DIY returns the raw value by a given key.
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func (c *YAMLConfigContainer) DIY(key string) (v interface{}, err error) {
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if v, ok := c.data[key]; ok {
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return v, nil
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}
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return nil, errors.New("not exist key")
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}
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func init() {
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config.Register("yaml", &YAMLConfig{})
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}
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