mirror of
https://gitee.com/johng/gf
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47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
// Copyright 2019 gf Author(https://gitee.com/johng/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://gitee.com/johng/gf.
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package gregex
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import (
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"regexp"
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"sync"
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)
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// 缓存对象，主要用于缓存底层regx对象
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var (
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regexMu = sync.RWMutex{}
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regexMap = make(map[string]*regexp.Regexp)
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)
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// 根据pattern生成对应的regexp正则对象
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func getRegexp(pattern string) (*regexp.Regexp, error) {
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if r := getCache(pattern); r != nil {
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return r, nil
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}
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if r, err := regexp.Compile(pattern); err == nil {
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setCache(pattern, r)
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return r, 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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// 获得正则缓存对象
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func getCache(pattern string) (regex *regexp.Regexp) {
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regexMu.RLock()
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regex = regexMap[pattern]
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regexMu.RUnlock()
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return
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}
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// 设置正则缓存对象
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func setCache(pattern string, regex *regexp.Regexp) {
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regexMu.Lock()
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regexMap[pattern] = regex
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regexMu.Unlock()
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}
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