mirror of
https://gitee.com/johng/gf.git
synced 2024-12-05 21:59:05 +08:00
150 lines
4.8 KiB
Go
150 lines
4.8 KiB
Go
// Copyright 2017-2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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// Package gregex provides high performance API for regular expression functionality.
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package gregex
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import (
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"regexp"
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)
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// Quote quotes <s> by replacing special chars in <s>
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// to match the rules of regular expression pattern.
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// And returns the copy.
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//
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// Eg: Quote(`[foo]`) returns `\[foo\]`.
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func Quote(s string) string {
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return regexp.QuoteMeta(s)
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}
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// Validate checks whether given regular expression pattern <pattern> valid.
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func Validate(pattern string) error {
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_, err := getRegexp(pattern)
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return err
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}
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// IsMatch checks whether given bytes <src> matches <pattern>.
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func IsMatch(pattern string, src []byte) bool {
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if r, err := getRegexp(pattern); err == nil {
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return r.Match(src)
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}
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return false
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}
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// IsMatchString checks whether given string <src> matches <pattern>.
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func IsMatchString(pattern string, src string) bool {
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return IsMatch(pattern, []byte(src))
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}
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// MatchString return bytes slice that matched <pattern>.
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func Match(pattern string, src []byte) ([][]byte, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.FindSubmatch(src), nil
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} else {
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return nil, err
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}
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}
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// MatchString return strings that matched <pattern>.
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func MatchString(pattern string, src string) ([]string, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.FindStringSubmatch(src), nil
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} else {
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return nil, err
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}
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}
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// MatchAll return all bytes slices that matched <pattern>.
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func MatchAll(pattern string, src []byte) ([][][]byte, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.FindAllSubmatch(src, -1), nil
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} else {
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return nil, err
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}
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}
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// MatchAllString return all strings that matched <pattern>.
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func MatchAllString(pattern string, src string) ([][]string, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.FindAllStringSubmatch(src, -1), nil
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} else {
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return nil, err
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}
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}
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// ReplaceString replace all matched <pattern> in bytes <src> with bytes <replace>.
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func Replace(pattern string, replace, src []byte) ([]byte, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.ReplaceAll(src, replace), nil
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} else {
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return nil, err
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}
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}
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// ReplaceString replace all matched <pattern> in string <src> with string <replace>.
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func ReplaceString(pattern, replace, src string) (string, error) {
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r, e := Replace(pattern, []byte(replace), []byte(src))
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return string(r), e
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}
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// ReplaceFunc replace all matched <pattern> in bytes <src>
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// with custom replacement function <replaceFunc>.
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func ReplaceFunc(pattern string, src []byte, replaceFunc func(b []byte) []byte) ([]byte, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.ReplaceAllFunc(src, replaceFunc), nil
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} else {
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return nil, err
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}
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}
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// ReplaceFuncMatch replace all matched <pattern> in bytes <src>
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// with custom replacement function <replaceFunc>.
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// The parameter <match> type for <replaceFunc> is [][]byte,
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// which is the result contains all sub-patterns of <pattern> using Match function.
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func ReplaceFuncMatch(pattern string, src []byte, replaceFunc func(match [][]byte) []byte) ([]byte, error) {
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if r, err := getRegexp(pattern); err == nil {
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return r.ReplaceAllFunc(src, func(bytes []byte) []byte {
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match, _ := Match(pattern, bytes)
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return replaceFunc(match)
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}), nil
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} else {
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return nil, err
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}
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}
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// ReplaceStringFunc replace all matched <pattern> in string <src>
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// with custom replacement function <replaceFunc>.
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func ReplaceStringFunc(pattern string, src string, replaceFunc func(s string) string) (string, error) {
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bytes, err := ReplaceFunc(pattern, []byte(src), func(bytes []byte) []byte {
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return []byte(replaceFunc(string(bytes)))
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})
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return string(bytes), err
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}
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// ReplaceStringFuncMatch replace all matched <pattern> in string <src>
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// with custom replacement function <replaceFunc>.
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// The parameter <match> type for <replaceFunc> is []string,
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// which is the result contains all sub-patterns of <pattern> using MatchString function.
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func ReplaceStringFuncMatch(pattern string, src string, replaceFunc func(match []string) string) (string, error) {
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if r, err := getRegexp(pattern); err == nil {
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return string(r.ReplaceAllFunc([]byte(src), func(bytes []byte) []byte {
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match, _ := MatchString(pattern, string(bytes))
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return []byte(replaceFunc(match))
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})), nil
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} else {
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return "", err
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}
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}
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// Split slices <src> into substrings separated by the expression and returns a slice of
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// the substrings between those expression matches.
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func Split(pattern string, src string) []string {
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if r, err := getRegexp(pattern); err == nil {
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return r.Split(src, -1)
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}
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return nil
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}
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