1234567891011121314151617181920212223242526272829303132333435363738394041424344 |
- // Copyright 2011 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- package json
- import (
- "strings"
- )
- // tagOptions is the string following a comma in a struct field's "json"
- // tag, or the empty string. It does not include the leading comma.
- type tagOptions string
- // parseTag splits a struct field's json tag into its name and
- // comma-separated options.
- func parseTag(tag string) (string, tagOptions) {
- if idx := strings.Index(tag, ","); idx != -1 {
- return tag[:idx], tagOptions(tag[idx+1:])
- }
- return tag, tagOptions("")
- }
- // Contains reports whether a comma-separated list of options
- // contains a particular substr flag. substr must be surrounded by a
- // string boundary or commas.
- func (o tagOptions) Contains(optionName string) bool {
- if len(o) == 0 {
- return false
- }
- s := string(o)
- for s != "" {
- var next string
- i := strings.Index(s, ",")
- if i >= 0 {
- s, next = s[:i], s[i+1:]
- }
- if s == optionName {
- return true
- }
- s = next
- }
- return false
- }
|