finish config module support ini/json/xml/yaml

config/json.go

@@ -0,0 +1,90 @@
+package config
+
+import (
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+	"os"
+	"sync"
+)
+
+type JsonConfig struct {
+}
+
+func (js *JsonConfig) Parse(filename string) (ConfigContainer, error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+	x := &JsonConfigContainer{
+		data: make(map[string]interface{}),
+	}
+	content, err := ioutil.ReadAll(file)
+	if err != nil {
+		return nil, err
+	}
+	err = json.Unmarshal(content, &x.data)
+	if err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type JsonConfigContainer struct {
+	data map[string]interface{}
+	sync.Mutex
+}
+
+func (c *JsonConfigContainer) Bool(key string) (bool, error) {
+	if v, ok := c.data[key].(bool); ok {
+		return v, nil
+	}
+	return false, errors.New("not bool value")
+}
+
+func (c *JsonConfigContainer) Int(key string) (int, error) {
+	if v, ok := c.data[key].(float64); ok {
+		return int(v), nil
+	}
+	return 0, errors.New("not int value")
+}
+
+func (c *JsonConfigContainer) Int64(key string) (int64, error) {
+	if v, ok := c.data[key].(float64); ok {
+		return int64(v), nil
+	}
+	return 0, errors.New("not bool value")
+}
+
+func (c *JsonConfigContainer) Float(key string) (float64, error) {
+	if v, ok := c.data[key].(float64); ok {
+		return v, nil
+	}
+	return 0.0, errors.New("not float64 value")
+}
+
+func (c *JsonConfigContainer) String(key string) string {
+	if v, ok := c.data[key].(string); ok {
+		return v
+	}
+	return ""
+}
+
+func (c *JsonConfigContainer) Set(key, val string) error {
+	c.Lock()
+	defer c.Unlock()
+	c.data[key] = val
+	return nil
+}
+
+func (c *JsonConfigContainer) DIY(key string) (v interface{}, err error) {
+	if v, ok := c.data[key]; ok {
+		return v, nil
+	}
+	return nil, errors.New("not exist key")
+}
+
+func init() {
+	Register("json", &JsonConfig{})
+}