route/vendor/github.com/go-resty/resty/util.go

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2017-09-30 16:47:47 +00:00
// Copyright (c) 2015-2017 Jeevanandam M (jeeva@myjeeva.com), All rights reserved.
// resty source code and usage is governed by a MIT style
// license that can be found in the LICENSE file.
package resty
import (
"bytes"
"encoding/json"
"encoding/xml"
"io"
"log"
"mime/multipart"
"net/http"
"os"
"path/filepath"
"reflect"
"runtime"
"strings"
)
//‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
// Package Helper methods
//___________________________________
// IsStringEmpty method tells whether given string is empty or not
func IsStringEmpty(str string) bool {
return (len(strings.TrimSpace(str)) == 0)
}
// DetectContentType method is used to figure out `Request.Body` content type for request header
func DetectContentType(body interface{}) string {
contentType := plainTextType
kind := kindOf(body)
switch kind {
case reflect.Struct, reflect.Map:
contentType = jsonContentType
case reflect.String:
contentType = plainTextType
default:
if b, ok := body.([]byte); ok {
contentType = http.DetectContentType(b)
} else if kind == reflect.Slice {
contentType = jsonContentType
}
}
return contentType
}
// IsJSONType method is to check JSON content type or not
func IsJSONType(ct string) bool {
return jsonCheck.MatchString(ct)
}
// IsXMLType method is to check XML content type or not
func IsXMLType(ct string) bool {
return xmlCheck.MatchString(ct)
}
// Unmarshal content into object from JSON or XML
// Deprecated: kept for backward compatibility
func Unmarshal(ct string, b []byte, d interface{}) (err error) {
if IsJSONType(ct) {
err = json.Unmarshal(b, d)
} else if IsXMLType(ct) {
err = xml.Unmarshal(b, d)
}
return
}
// Unmarshalc content into object from JSON or XML
func Unmarshalc(c *Client, ct string, b []byte, d interface{}) (err error) {
if IsJSONType(ct) {
err = c.JSONUnmarshal(b, d)
} else if IsXMLType(ct) {
err = xml.Unmarshal(b, d)
}
return
}
//‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
// Package Unexported methods
//___________________________________
func firstNonEmpty(v ...string) string {
for _, s := range v {
if !IsStringEmpty(s) {
return s
}
}
return ""
}
func getLogger(w io.Writer) *log.Logger {
return log.New(w, "RESTY ", log.LstdFlags)
}
func addFile(w *multipart.Writer, fieldName, path string) error {
file, err := os.Open(path)
if err != nil {
return err
}
defer func() {
_ = file.Close()
}()
part, err := w.CreateFormFile(fieldName, filepath.Base(path))
if err != nil {
return err
}
_, err = io.Copy(part, file)
return err
}
func addFileReader(w *multipart.Writer, f *File) error {
part, err := w.CreateFormFile(f.ParamName, f.Name)
if err != nil {
return err
}
_, err = io.Copy(part, f.Reader)
return err
}
func getPointer(v interface{}) interface{} {
vv := valueOf(v)
if vv.Kind() == reflect.Ptr {
return v
}
return reflect.New(vv.Type()).Interface()
}
func isPayloadSupported(m string, allowMethodGet bool) bool {
return (m == MethodPost || m == MethodPut || m == MethodDelete || m == MethodPatch || (allowMethodGet && m == MethodGet))
}
func typeOf(i interface{}) reflect.Type {
return indirect(valueOf(i)).Type()
}
func valueOf(i interface{}) reflect.Value {
return reflect.ValueOf(i)
}
func indirect(v reflect.Value) reflect.Value {
return reflect.Indirect(v)
}
func kindOf(v interface{}) reflect.Kind {
return typeOf(v).Kind()
}
func createDirectory(dir string) (err error) {
if _, err = os.Stat(dir); err != nil {
if os.IsNotExist(err) {
if err = os.MkdirAll(dir, 0755); err != nil {
return
}
}
}
return
}
func canJSONMarshal(contentType string, kind reflect.Kind) bool {
return IsJSONType(contentType) && (kind == reflect.Struct || kind == reflect.Map)
}
func functionName(i interface{}) string {
return runtime.FuncForPC(reflect.ValueOf(i).Pointer()).Name()
}
func acquireBuffer() *bytes.Buffer {
return bufPool.Get().(*bytes.Buffer)
}
func releaseBuffer(buf *bytes.Buffer) {
if buf != nil {
buf.Reset()
bufPool.Put(buf)
}
}