mirror of
https://github.com/octoleo/restic.git
synced 2024-12-05 03:13:18 +00:00
179 lines
4.3 KiB
Go
179 lines
4.3 KiB
Go
|
package autorest
|
||
|
|
||
|
import (
|
||
|
"bytes"
|
||
|
"encoding/json"
|
||
|
"encoding/xml"
|
||
|
"fmt"
|
||
|
"io"
|
||
|
"net/url"
|
||
|
"reflect"
|
||
|
"sort"
|
||
|
"strings"
|
||
|
)
|
||
|
|
||
|
// EncodedAs is a series of constants specifying various data encodings
|
||
|
type EncodedAs string
|
||
|
|
||
|
const (
|
||
|
// EncodedAsJSON states that data is encoded as JSON
|
||
|
EncodedAsJSON EncodedAs = "JSON"
|
||
|
|
||
|
// EncodedAsXML states that data is encoded as Xml
|
||
|
EncodedAsXML EncodedAs = "XML"
|
||
|
)
|
||
|
|
||
|
// Decoder defines the decoding method json.Decoder and xml.Decoder share
|
||
|
type Decoder interface {
|
||
|
Decode(v interface{}) error
|
||
|
}
|
||
|
|
||
|
// NewDecoder creates a new decoder appropriate to the passed encoding.
|
||
|
// encodedAs specifies the type of encoding and r supplies the io.Reader containing the
|
||
|
// encoded data.
|
||
|
func NewDecoder(encodedAs EncodedAs, r io.Reader) Decoder {
|
||
|
if encodedAs == EncodedAsJSON {
|
||
|
return json.NewDecoder(r)
|
||
|
} else if encodedAs == EncodedAsXML {
|
||
|
return xml.NewDecoder(r)
|
||
|
}
|
||
|
return nil
|
||
|
}
|
||
|
|
||
|
// CopyAndDecode decodes the data from the passed io.Reader while making a copy. Having a copy
|
||
|
// is especially useful if there is a chance the data will fail to decode.
|
||
|
// encodedAs specifies the expected encoding, r provides the io.Reader to the data, and v
|
||
|
// is the decoding destination.
|
||
|
func CopyAndDecode(encodedAs EncodedAs, r io.Reader, v interface{}) (bytes.Buffer, error) {
|
||
|
b := bytes.Buffer{}
|
||
|
return b, NewDecoder(encodedAs, io.TeeReader(r, &b)).Decode(v)
|
||
|
}
|
||
|
|
||
|
// TeeReadCloser returns a ReadCloser that writes to w what it reads from rc.
|
||
|
// It utilizes io.TeeReader to copy the data read and has the same behavior when reading.
|
||
|
// Further, when it is closed, it ensures that rc is closed as well.
|
||
|
func TeeReadCloser(rc io.ReadCloser, w io.Writer) io.ReadCloser {
|
||
|
return &teeReadCloser{rc, io.TeeReader(rc, w)}
|
||
|
}
|
||
|
|
||
|
type teeReadCloser struct {
|
||
|
rc io.ReadCloser
|
||
|
r io.Reader
|
||
|
}
|
||
|
|
||
|
func (t *teeReadCloser) Read(p []byte) (int, error) {
|
||
|
return t.r.Read(p)
|
||
|
}
|
||
|
|
||
|
func (t *teeReadCloser) Close() error {
|
||
|
return t.rc.Close()
|
||
|
}
|
||
|
|
||
|
func containsInt(ints []int, n int) bool {
|
||
|
for _, i := range ints {
|
||
|
if i == n {
|
||
|
return true
|
||
|
}
|
||
|
}
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
func escapeValueStrings(m map[string]string) map[string]string {
|
||
|
for key, value := range m {
|
||
|
m[key] = url.QueryEscape(value)
|
||
|
}
|
||
|
return m
|
||
|
}
|
||
|
|
||
|
func ensureValueStrings(mapOfInterface map[string]interface{}) map[string]string {
|
||
|
mapOfStrings := make(map[string]string)
|
||
|
for key, value := range mapOfInterface {
|
||
|
mapOfStrings[key] = ensureValueString(value)
|
||
|
}
|
||
|
return mapOfStrings
|
||
|
}
|
||
|
|
||
|
func ensureValueString(value interface{}) string {
|
||
|
if value == nil {
|
||
|
return ""
|
||
|
}
|
||
|
switch v := value.(type) {
|
||
|
case string:
|
||
|
return v
|
||
|
case []byte:
|
||
|
return string(v)
|
||
|
default:
|
||
|
return fmt.Sprintf("%v", v)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// MapToValues method converts map[string]interface{} to url.Values.
|
||
|
func MapToValues(m map[string]interface{}) url.Values {
|
||
|
v := url.Values{}
|
||
|
for key, value := range m {
|
||
|
x := reflect.ValueOf(value)
|
||
|
if x.Kind() == reflect.Array || x.Kind() == reflect.Slice {
|
||
|
for i := 0; i < x.Len(); i++ {
|
||
|
v.Add(key, ensureValueString(x.Index(i)))
|
||
|
}
|
||
|
} else {
|
||
|
v.Add(key, ensureValueString(value))
|
||
|
}
|
||
|
}
|
||
|
return v
|
||
|
}
|
||
|
|
||
|
// String method converts interface v to string. If interface is a list, it
|
||
|
// joins list elements using separator.
|
||
|
func String(v interface{}, sep ...string) string {
|
||
|
if len(sep) > 0 {
|
||
|
return ensureValueString(strings.Join(v.([]string), sep[0]))
|
||
|
}
|
||
|
return ensureValueString(v)
|
||
|
}
|
||
|
|
||
|
// Encode method encodes url path and query parameters.
|
||
|
func Encode(location string, v interface{}, sep ...string) string {
|
||
|
s := String(v, sep...)
|
||
|
switch strings.ToLower(location) {
|
||
|
case "path":
|
||
|
return pathEscape(s)
|
||
|
case "query":
|
||
|
return queryEscape(s)
|
||
|
default:
|
||
|
return s
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func pathEscape(s string) string {
|
||
|
return strings.Replace(url.QueryEscape(s), "+", "%20", -1)
|
||
|
}
|
||
|
|
||
|
func queryEscape(s string) string {
|
||
|
return url.QueryEscape(s)
|
||
|
}
|
||
|
|
||
|
// This method is same as Encode() method of "net/url" go package,
|
||
|
// except it does not encode the query parameters because they
|
||
|
// already come encoded. It formats values map in query format (bar=foo&a=b).
|
||
|
func createQuery(v url.Values) string {
|
||
|
var buf bytes.Buffer
|
||
|
keys := make([]string, 0, len(v))
|
||
|
for k := range v {
|
||
|
keys = append(keys, k)
|
||
|
}
|
||
|
sort.Strings(keys)
|
||
|
for _, k := range keys {
|
||
|
vs := v[k]
|
||
|
prefix := url.QueryEscape(k) + "="
|
||
|
for _, v := range vs {
|
||
|
if buf.Len() > 0 {
|
||
|
buf.WriteByte('&')
|
||
|
}
|
||
|
buf.WriteString(prefix)
|
||
|
buf.WriteString(v)
|
||
|
}
|
||
|
}
|
||
|
return buf.String()
|
||
|
}
|