114 lines
2.8 KiB
Go
114 lines
2.8 KiB
Go
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// Disabling building of toml support in cases where golang is 1.0 or 1.1
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// as the encoding library is not implemented or supported.
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// +build go1.2
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package altsrc
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import (
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"fmt"
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"reflect"
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"github.com/BurntSushi/toml"
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"gopkg.in/urfave/cli.v1"
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)
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type tomlMap struct {
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Map map[interface{}]interface{}
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}
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func unmarshalMap(i interface{}) (ret map[interface{}]interface{}, err error) {
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ret = make(map[interface{}]interface{})
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m := i.(map[string]interface{})
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for key, val := range m {
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v := reflect.ValueOf(val)
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switch v.Kind() {
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case reflect.Bool:
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ret[key] = val.(bool)
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case reflect.String:
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ret[key] = val.(string)
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case reflect.Int:
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ret[key] = int(val.(int))
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case reflect.Int8:
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ret[key] = int(val.(int8))
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case reflect.Int16:
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ret[key] = int(val.(int16))
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case reflect.Int32:
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ret[key] = int(val.(int32))
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case reflect.Int64:
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ret[key] = int(val.(int64))
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case reflect.Uint:
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ret[key] = int(val.(uint))
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case reflect.Uint8:
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ret[key] = int(val.(uint8))
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case reflect.Uint16:
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ret[key] = int(val.(uint16))
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case reflect.Uint32:
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ret[key] = int(val.(uint32))
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case reflect.Uint64:
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ret[key] = int(val.(uint64))
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case reflect.Float32:
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ret[key] = float64(val.(float32))
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case reflect.Float64:
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ret[key] = float64(val.(float64))
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case reflect.Map:
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if tmp, err := unmarshalMap(val); err == nil {
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ret[key] = tmp
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} else {
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return nil, err
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}
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case reflect.Array:
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fallthrough // [todo] - Support array type
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default:
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return nil, fmt.Errorf("Unsupported: type = %#v", v.Kind())
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}
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}
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return ret, nil
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}
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func (self *tomlMap) UnmarshalTOML(i interface{}) error {
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if tmp, err := unmarshalMap(i); err == nil {
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self.Map = tmp
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} else {
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return err
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}
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return nil
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}
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type tomlSourceContext struct {
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FilePath string
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}
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// NewTomlSourceFromFile creates a new TOML InputSourceContext from a filepath.
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func NewTomlSourceFromFile(file string) (InputSourceContext, error) {
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tsc := &tomlSourceContext{FilePath: file}
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var results tomlMap = tomlMap{}
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if err := readCommandToml(tsc.FilePath, &results); err != nil {
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return nil, fmt.Errorf("Unable to load TOML file '%s': inner error: \n'%v'", tsc.FilePath, err.Error())
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}
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return &MapInputSource{valueMap: results.Map}, nil
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}
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// NewTomlSourceFromFlagFunc creates a new TOML InputSourceContext from a provided flag name and source context.
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func NewTomlSourceFromFlagFunc(flagFileName string) func(context *cli.Context) (InputSourceContext, error) {
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return func(context *cli.Context) (InputSourceContext, error) {
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filePath := context.String(flagFileName)
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return NewTomlSourceFromFile(filePath)
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}
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}
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func readCommandToml(filePath string, container interface{}) (err error) {
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b, err := loadDataFrom(filePath)
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if err != nil {
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return err
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}
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err = toml.Unmarshal(b, container)
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if err != nil {
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return err
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}
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err = nil
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return
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}
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