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Add shared write function and safe methods

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This commit is contained in:
Herkermer Sherwood 2016-12-08 17:07:43 -08:00
parent 6b4d3dc059
commit aa295b144a
1 changed files with 62 additions and 20 deletions
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82
viper.go
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@ -1141,31 +1141,73 @@ func (v *Viper) MergeConfig(in io.Reader) error {
return nil return nil
} }
// WriteConfig writes the current configuration to a file. func writeConfig(filename string, force bool) error { return v.writeConfig(filename, force) }
func WriteConfig() error { return v.WriteConfig() } func (v *Viper) writeConfig(filename string, force bool) error {
func (v *Viper) WriteConfig() error { jww.INFO.Println("Attempting to write configuration to file.")
ext := filepath.Ext(filename)
jww.INFO.Println("Attempting to write config into the file.") if len(ext) <= 1 {
// filename, err := v.getConfigFile() return fmt.Errorf("Filename: %s requires valid extension.", filename)
filename := "out.yaml" }
// if err != nil { configType := ext[1:]
// return err if !stringInSlice(configType, SupportedExts) {
// } return UnsupportedConfigError(configType)
if !stringInSlice(v.getConfigType(), SupportedExts) {
return UnsupportedConfigError(v.getConfigType())
} }
if v.config == nil { if v.config == nil {
v.config = make(map[string]interface{}) v.config = make(map[string]interface{})
} }
var flags int
file, err := v.fs.OpenFile(filename, os.O_CREATE|os.O_WRONLY, os.FileMode(0644)) if force == true {
flags = os.O_CREATE | os.O_WRONLY
} else {
if _, err := os.Stat(filename); os.IsNotExist(err) {
flags = os.O_WRONLY
} else {
return fmt.Errorf("File: %s exists. Use WriteConfig to overwrite.", filename)
}
}
f, err := v.fs.OpenFile(filename, flags, os.FileMode(0644))
if err != nil { if err != nil {
return err return err
} }
return v.marshalWriter(f, v.config, configType)
return v.marshalWriter(file, v.config)
} }
// WriteConfig writes the current configuration to a file.
func WriteConfig() error { return v.WriteConfig() }
func (v *Viper) WriteConfig() error {
filename, err := v.getConfigFile()
if err != nil {
return err
}
return v.writeConfig(filename, true)
}
// SafeWriteConfig writes current configuration to file only if the file does not exist.
func SafeWriteConfig() error { return v.SafeWriteConfig() }
func (v *Viper) SafeWriteConfig() error {
filename, err := v.getConfigFile()
if err != nil {
return err
}
return v.writeConfig(filename, false)
}
// WriteConfigAs writes current configuration to a given filename.
func WriteConfigAs(filename string) error { return v.WriteConfigAs(filename) }
func (v *Viper) WriteConfigAs(filename string) error {
return v.writeConfig(filename, true)
}
// SafeWriteConfigAs writes current configuration to a given filename is it does not exist.
func SafeWriteConfigAs(filename string) error { return v.SafeWriteConfigAs(filename) }
func (v *Viper) SafeWriteConfigAs(filename string) error {
return v.writeConfig(filename, false)
}
// WriteConfigKey writes given key and value to file.
// WriteConfigKeyAs writes given key and value to a given filename.
func keyExists(k string, m map[string]interface{}) string { func keyExists(k string, m map[string]interface{}) string {
lk := strings.ToLower(k) lk := strings.ToLower(k)
for mk := range m { for mk := range m {
@ -1285,12 +1327,12 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
} }
// Marshal a map into Writer. // Marshal a map into Writer.
func marshalWriter(out afero.File, c map[string]interface{}) error { func marshalWriter(out afero.File, c map[string]interface{}, configType string) error {
return v.marshalWriter(out, c) return v.marshalWriter(out, c, configType)
} }
func (v *Viper) marshalWriter(out afero.File, c map[string]interface{}) error { func (v *Viper) marshalWriter(out afero.File, c map[string]interface{}, configType string) error {
return marshalConfigWriter(out, c, v.getConfigType()) return marshalConfigWriter(out, c, configType)
} }
func (v *Viper) insensitiviseMaps() { func (v *Viper) insensitiviseMaps() {