forked from hashicorp/consul-template
/
mapstructure.go
57 lines (49 loc) · 1.19 KB
/
mapstructure.go
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package main
import (
"os"
"reflect"
"strconv"
"github.com/hashicorp/consul-template/signals"
"github.com/mitchellh/mapstructure"
)
// StringToFileModeFunc returns a function that converts strings to os.FileMode
// value. This is designed to be used with mapstructure for parsing out a
// filemode value.
func StringToFileModeFunc() mapstructure.DecodeHookFunc {
return func(
f reflect.Type,
t reflect.Type,
data interface{}) (interface{}, error) {
if f.Kind() != reflect.String {
return data, nil
}
if t != reflect.TypeOf(os.FileMode(0)) {
return data, nil
}
// Convert it by parsing
v, err := strconv.ParseUint(data.(string), 8, 12)
if err != nil {
return data, err
}
return os.FileMode(v), nil
}
}
// StringToSignalFunc parses a string as a signal based on the signal lookup
// table.
func StringToSignalFunc() mapstructure.DecodeHookFunc {
return func(
f reflect.Type,
t reflect.Type,
data interface{}) (interface{}, error) {
if f.Kind() != reflect.String {
return data, nil
}
if t.String() != "os.Signal" {
return data, nil
}
if data == nil || data.(string) == "" {
return (*os.Signal)(nil), nil
}
return signals.Parse(data.(string))
}
}