mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-30 21:25:32 +08:00
131 lines
2.6 KiB
Go
131 lines
2.6 KiB
Go
package util
|
|
|
|
// Copyright 2011 Numerotron Inc.
|
|
// Use of this source code is governed by an MIT-style license
|
|
// that can be found in the LICENSE file.
|
|
//
|
|
// Developed at www.stathat.com by Patrick Crosby
|
|
// Contact us on twitter with any questions: twitter.com/stat_hat
|
|
|
|
// The jconfig package provides a simple, basic configuration file parser using JSON.
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"os"
|
|
|
|
"github.com/chrislusf/weed-fs/go/glog"
|
|
)
|
|
|
|
type Config struct {
|
|
data map[string]interface{}
|
|
filename string
|
|
}
|
|
|
|
func newConfig() *Config {
|
|
result := new(Config)
|
|
result.data = make(map[string]interface{})
|
|
return result
|
|
}
|
|
|
|
// Loads config information from a JSON file
|
|
func LoadConfig(filename string) *Config {
|
|
result := newConfig()
|
|
result.filename = filename
|
|
err := result.parse()
|
|
if err != nil {
|
|
glog.Fatalf("error loading config file %s: %s", filename, err)
|
|
}
|
|
return result
|
|
}
|
|
|
|
// Loads config information from a JSON string
|
|
func LoadConfigString(s string) *Config {
|
|
result := newConfig()
|
|
err := json.Unmarshal([]byte(s), &result.data)
|
|
if err != nil {
|
|
glog.Fatalf("error parsing config string %s: %s", s, err)
|
|
}
|
|
return result
|
|
}
|
|
|
|
func (c *Config) StringMerge(s string) {
|
|
next := LoadConfigString(s)
|
|
c.merge(next.data)
|
|
}
|
|
|
|
func (c *Config) LoadMerge(filename string) {
|
|
next := LoadConfig(filename)
|
|
c.merge(next.data)
|
|
}
|
|
|
|
func (c *Config) merge(ndata map[string]interface{}) {
|
|
for k, v := range ndata {
|
|
c.data[k] = v
|
|
}
|
|
}
|
|
|
|
func (c *Config) parse() error {
|
|
f, err := os.Open(c.filename)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
b := new(bytes.Buffer)
|
|
_, err = b.ReadFrom(f)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = json.Unmarshal(b.Bytes(), &c.data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Returns a string for the config variable key
|
|
func (c *Config) GetString(key string) string {
|
|
result, present := c.data[key]
|
|
if !present {
|
|
return ""
|
|
}
|
|
return result.(string)
|
|
}
|
|
|
|
// Returns an int for the config variable key
|
|
func (c *Config) GetInt(key string) int {
|
|
x, ok := c.data[key]
|
|
if !ok {
|
|
return -1
|
|
}
|
|
return int(x.(float64))
|
|
}
|
|
|
|
// Returns a float for the config variable key
|
|
func (c *Config) GetFloat(key string) float64 {
|
|
x, ok := c.data[key]
|
|
if !ok {
|
|
return -1
|
|
}
|
|
return x.(float64)
|
|
}
|
|
|
|
// Returns a bool for the config variable key
|
|
func (c *Config) GetBool(key string) bool {
|
|
x, ok := c.data[key]
|
|
if !ok {
|
|
return false
|
|
}
|
|
return x.(bool)
|
|
}
|
|
|
|
// Returns an array for the config variable key
|
|
func (c *Config) GetArray(key string) []interface{} {
|
|
result, present := c.data[key]
|
|
if !present {
|
|
return []interface{}(nil)
|
|
}
|
|
return result.([]interface{})
|
|
}
|