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// Copyright 2013 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package googleapi
import (
"encoding/json"
"strconv"
)
// Int64s is a slice of int64s that marshal as quoted strings in JSON.
type Int64s []int64
func (q *Int64s) UnmarshalJSON(raw []byte) error {
*q = (*q)[:0]
var ss []string
if err := json.Unmarshal(raw, &ss); err != nil {
return err
}
for _, s := range ss {
v, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return err
}
*q = append(*q, int64(v))
}
return nil
}
// Int32s is a slice of int32s that marshal as quoted strings in JSON.
type Int32s []int32
func (q *Int32s) UnmarshalJSON(raw []byte) error {
*q = (*q)[:0]
var ss []string
if err := json.Unmarshal(raw, &ss); err != nil {
return err
}
for _, s := range ss {
v, err := strconv.ParseInt(s, 10, 32)
if err != nil {
return err
}
*q = append(*q, int32(v))
}
return nil
}
// Uint64s is a slice of uint64s that marshal as quoted strings in JSON.
type Uint64s []uint64
func (q *Uint64s) UnmarshalJSON(raw []byte) error {
*q = (*q)[:0]
var ss []string
if err := json.Unmarshal(raw, &ss); err != nil {
return err
}
for _, s := range ss {
v, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return err
}
*q = append(*q, uint64(v))
}
return nil
}
// Uint32s is a slice of uint32s that marshal as quoted strings in JSON.
type Uint32s []uint32
func (q *Uint32s) UnmarshalJSON(raw []byte) error {
*q = (*q)[:0]
var ss []string
if err := json.Unmarshal(raw, &ss); err != nil {
return err
}
for _, s := range ss {
v, err := strconv.ParseUint(s, 10, 32)
if err != nil {
return err
}
*q = append(*q, uint32(v))
}
return nil
}
// Float64s is a slice of float64s that marshal as quoted strings in JSON.
type Float64s []float64
func (q *Float64s) UnmarshalJSON(raw []byte) error {
*q = (*q)[:0]
var ss []string
if err := json.Unmarshal(raw, &ss); err != nil {
return err
}
for _, s := range ss {
v, err := strconv.ParseFloat(s, 64)
if err != nil {
return err
}
*q = append(*q, float64(v))
}
return nil
}
func quotedList(n int, fn func(dst []byte, i int) []byte) ([]byte, error) {
dst := make([]byte, 0, 2+n*10) // somewhat arbitrary
dst = append(dst, '[')
for i := 0; i < n; i++ {
if i > 0 {
dst = append(dst, ',')
}
dst = append(dst, '"')
dst = fn(dst, i)
dst = append(dst, '"')
}
dst = append(dst, ']')
return dst, nil
}
func (s Int64s) MarshalJSON() ([]byte, error) {
return quotedList(len(s), func(dst []byte, i int) []byte {
return strconv.AppendInt(dst, s[i], 10)
})
}
func (s Int32s) MarshalJSON() ([]byte, error) {
return quotedList(len(s), func(dst []byte, i int) []byte {
return strconv.AppendInt(dst, int64(s[i]), 10)
})
}
func (s Uint64s) MarshalJSON() ([]byte, error) {
return quotedList(len(s), func(dst []byte, i int) []byte {
return strconv.AppendUint(dst, s[i], 10)
})
}
func (s Uint32s) MarshalJSON() ([]byte, error) {
return quotedList(len(s), func(dst []byte, i int) []byte {
return strconv.AppendUint(dst, uint64(s[i]), 10)
})
}
func (s Float64s) MarshalJSON() ([]byte, error) {
return quotedList(len(s), func(dst []byte, i int) []byte {
return strconv.AppendFloat(dst, s[i], 'g', -1, 64)
})
}
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