93 lines
1.7 KiB
Go
93 lines
1.7 KiB
Go
package jsonpointer
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import (
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"strings"
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"github.com/pkg/errors"
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)
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const (
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TokenSeparator = "/"
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NonExistentMemberToken = "-"
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)
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type Pointer struct {
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tokens []string
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}
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func (p *Pointer) Get(doc interface{}) (interface{}, error) {
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value, err := get(doc, p.tokens)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return value, nil
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}
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func (p *Pointer) Set(doc interface{}, value interface{}) (interface{}, error) {
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doc, err := set(doc, p.tokens, value)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return doc, nil
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}
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func (p *Pointer) Force(doc interface{}, value interface{}) (interface{}, error) {
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doc, err := force(doc, p.tokens, value)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return doc, nil
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}
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func (p *Pointer) Delete(doc interface{}) (interface{}, error) {
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doc, err := del(doc, p.tokens)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return doc, nil
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}
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func New(raw string) *Pointer {
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tokens := decodeTokens(raw)
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return &Pointer{tokens}
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}
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func tokensToString(tokens []string) string {
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escapedTokens := make([]string, 0)
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for _, t := range tokens {
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escapedTokens = append(escapedTokens, escapeToken(t))
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}
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return TokenSeparator + strings.Join(escapedTokens, TokenSeparator)
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}
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func escapeToken(token string) string {
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token = strings.ReplaceAll(token, "/", "~1")
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token = strings.ReplaceAll(token, "~", "~0")
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return token
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}
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func unescapeToken(token string) string {
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token = strings.ReplaceAll(token, "~1", "/")
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token = strings.ReplaceAll(token, "~0", "~")
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return token
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}
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func decodeTokens(raw string) []string {
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tokens := strings.Split(raw, TokenSeparator)
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for i, t := range tokens {
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tokens[i] = unescapeToken(t)
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}
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return tokens[1:]
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}
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