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config.go
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config.go
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// This code is available on the terms of the project LICENSE.md file,
// also available online at https://blueoakcouncil.org/license/1.0.0.
package config
import (
"bytes"
"fmt"
"gopkg.in/ini.v1"
)
func loadINIConfig(cfgPathOrData interface{}) (*ini.File, error) {
loadOpts := ini.LoadOptions{Insensitive: true}
return ini.LoadSources(loadOpts, cfgPathOrData)
}
// Parse returns a collection of all key-value options in the provided config
// file path or []byte data.
func Parse(cfgPathOrData interface{}) (map[string]string, error) {
cfgFile, err := loadINIConfig(cfgPathOrData)
if err != nil {
return nil, err
}
cfgKeyValues := make(map[string]string)
for _, section := range cfgFile.Sections() {
for _, key := range section.Keys() {
cfgKeyValues[key.Name()] = key.String()
}
}
return cfgKeyValues, nil
}
// ParseInto parses config options from the provided config file path or []byte
// data into the specified interface.
func ParseInto(cfgPathOrData, obj interface{}) error {
cfgFile, err := loadINIConfig(cfgPathOrData)
if err != nil {
return err
}
for _, section := range cfgFile.Sections() {
err := section.MapTo(obj)
if err != nil {
return err
}
}
return nil
}
// Data generates a config []byte data from a settings map.
func Data(settings map[string]string) []byte {
var buffer bytes.Buffer
for key, value := range settings {
buffer.WriteString(fmt.Sprintf("%s=%s\n", key, value))
}
return buffer.Bytes()
}
// Unmapify parses config options from the provided settings map into the
// specified interface.
func Unmapify(settings map[string]string, obj interface{}) error {
cfgData := Data(settings)
return ParseInto(cfgData, obj)
}
// Mapify takes an interface with ini tags, and parses it into
// a settings map. obj must be a pointer to a struct.
func Mapify(obj interface{}) (map[string]string, error) {
cfg := ini.Empty()
err := ini.ReflectFrom(cfg, obj)
if err != nil {
return nil, err
}
cfgKeyValues := make(map[string]string)
for _, section := range cfg.Sections() {
for _, key := range section.Keys() {
cfgKeyValues[key.Name()] = key.String()
}
}
return cfgKeyValues, nil
}