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configurationmap.go
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configurationmap.go
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/*
* === This file is part of ALICE O² ===
*
* Copyright 2018 CERN and copyright holders of ALICE O².
* Author: Teo Mrnjavac <teo.mrnjavac@cern.ch>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* In applying this license CERN does not waive the privileges and
* immunities granted to it by virtue of its status as an
* Intergovernmental Organization or submit itself to any jurisdiction.
*/
package configuration
import (
"errors"
"fmt"
"reflect"
"strconv"
)
type ItemType int
const (
IT_Value ItemType = iota
IT_Map
IT_Array
)
type Item interface {
Type() ItemType
Value() string
Map() Map
Array() Array
DeepCopy() Item
}
type Map map[string]Item
type Array []Item
type String string
func (m Map) Type() ItemType {
return IT_Map
}
func (m Map) Value() string {
return ""
}
func (m Map) Map() Map {
return m
}
func (m Map) Array() Array {
return nil
}
func (m Map) DeepCopy() Item {
item := make(Map)
for k, v := range m {
vCopy := v.DeepCopy()
item[k] = vCopy
}
return item
}
func (m Array) Type() ItemType {
return IT_Array
}
func (m Array) Value() string {
return ""
}
func (m Array) Map() Map {
return nil
}
func (m Array) Array() Array {
return m
}
func (m Array) DeepCopy() Item {
item := make(Array, len(m))
for i, v := range m {
vCopy := v.DeepCopy()
item[i] = vCopy
}
return item
}
func (s String) Type() ItemType {
return IT_Value
}
func (s String) Value() string {
return string(s)
}
func (s String) Map() Map {
return nil
}
func (s String) Array() Array {
return nil
}
func (s String) DeepCopy() Item {
item := String(s.Value())
return item
}
func intfToItem(intf interface{}) (item Item, err error) {
v := reflect.ValueOf(intf)
if v.Kind() == reflect.Map {
m := make(Map)
for _, key := range v.MapKeys() {
val := v.MapIndex(key)
m[key.Interface().(string)], err = intfToItem(val.Interface())
if err != nil {
return
}
}
item = m
return
} else if v.Kind() == reflect.Slice {
a := make(Array, v.Len())
for i := 0; i < v.Len(); i++ {
val := v.Index(i)
a[i], err = intfToItem(val.Interface())
if err != nil {
return
}
}
item = a
return
} else if v.Kind() == reflect.String {
item = String(v.String())
return
} else if v.Kind() == reflect.Int {
item = String(strconv.FormatInt(int64(v.Int()), 10))
return
} else if v.Kind() == reflect.Float64 {
item = String(strconv.FormatFloat(v.Float(), 'f', -1, 64))
return
} else if v.Kind() == reflect.Float32 {
item = String(strconv.FormatFloat(v.Float(), 'f', -1, 32))
return
} else if v.Kind() == reflect.Bool {
item = String(strconv.FormatBool(v.Bool()))
return
} else {
fmt.Println(v.Kind())
fmt.Println(v.String())
fmt.Println(v)
err = errors.New("bad configuration format, item is neither String nor Map")
return
}
return
}