60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
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package config
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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)
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var validUUID = regexp.MustCompile("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$")
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// Read the configuration file
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func Read(configFile string) (*Configuration, error) {
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fc := &Configuration{}
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f, err := os.Open(configFile)
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if err != nil {
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return nil, fmt.Errorf("Can not open file %v: %v", configFile, err)
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}
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defer f.Close()
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jsonDecoder := json.NewDecoder(f)
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if err := jsonDecoder.Decode(&fc); err != nil {
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return nil, fmt.Errorf("Can not unmarshal JSON: %v", err)
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}
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return fc, nil
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}
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// Write the configuration into a file, specified by the configuration filepath
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func Write(cfg *Configuration, configFile string) error {
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if _, err := os.Stat(configFile); os.IsNotExist(err) {
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configDir := filepath.Dir(configFile)
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err := os.MkdirAll(configDir, os.ModeDir)
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if err != nil {
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return fmt.Errorf("Can not create config directory %v: %v", configDir, err)
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}
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}
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f, err := os.Create(configFile)
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if err != nil {
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return fmt.Errorf("Can not write config file: %v", err)
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}
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defer f.Close()
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encoder := json.NewEncoder(f)
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encoder.SetIndent("", " ")
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err = encoder.Encode(cfg)
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if err != nil {
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return fmt.Errorf("Error in encoding struct to json: %v", err)
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}
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return nil
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}
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