由于golang标准库regexp不支持per语法，由于之前又搞过多年c#,所以比两者整理了一份 golang与Per5和.net兼容的正则处理包，如果对您有用请赏个star!
| Category | regexp | regex_go |
|---|---|---|
| Catastrophic backtracking possible | no, constant execution time guarantees | yes, if your pattern is at risk you can use the re.MatchTimeout field |
| Python-style capture groups (?Pre) | yes | no (yes in RE2 compat mode) |
| .NET-style capture groups (?re) or (?'name're) | no | yes |
| comments (?#comment) | no | yes |
| branch numbering reset (?|a|b) | no | no |
| possessive match (?>re) | no | yes |
| positive lookahead (?=re) | no | yes |
| negative lookahead (?!re) | no | yes |
| positive lookbehind (?<=re) | no | yes |
| negative lookbehind (?<!re) | no | yes |
| back reference \1 | no | yes |
| named back reference \k'name' | no | yes |
| named ascii character class [[:foo:]] | yes | no (yes in RE2 compat mode) |
| conditionals (?(expr)yes|no) | no | yes |
package main
import (
"fmt"
regex "github.com/kshdb/regex_go"
)
func main() {
//fmt.Println("测试")
_str := `[{"AAA":"1111","BBB":"222","CCC":""333 444"","DDD":"555"},{"AAA":"1111","BBB":"222","CCC":""333 444"","DDD":"555"},{"AAA":"1111","BBB":"222","CCC":""333 444"","DDD":"555"},{"AAA":"1111","BBB":""333 444"","CCC":"555","DDD":""}]`
reg := regex.MustCompile(`\"\"`, regex.RE2)
m, _err := reg.Replace(_str, `"`, 0, -1)
fmt.Println("执行的结果是", m, _err)
_srt1 := `
hooudcnwtn.com
hooeeoooeeeeeen.com
www.oo234r44.ss.com
hoo666666.com
`
reg1 := regex.MustCompile(`(?<=o{2})([2-6a-z\.]+)(?=\.)`, regex.RE2)
//sss, _ := reg1.FindStringMatch(_srt1) //获取单个
sss := regexp2FindAllString(reg1, _srt1) //获取批量
fmt.Println("执行的结果是", sss)
}
/*
获取批量
*/
func regexp2FindAllString(re *regex.Regexp, s string) []string {
var matches []string
m, _ := re.FindStringMatch(s)
for m != nil {
matches = append(matches, m.String())
m, _ = re.FindNextMatch(m)
}
return matches
}