英文:
Golang how to replace string in regex group?
问题
我想要替换字符串：
"hello [Jim], I'm [Sam]" 为 "hello [MR Jim], I'm [MR Sam]"
"[Greetings] hello [Jim], I'm [Sam]" 为 "[Greetings] hello [MR Jim], I'm [MR Sam]"
我该如何使用 Golang 的正则表达式来实现这个？
re := regexp.MustCompile(`hello [(\w+)], I'm [(\w+)]`)
非常感谢！
英文:
I want to replace strings:
"hello [Jim], I'm [Sam]" to "hello [MR Jim], I'm [MR Sam]"
"[Greetings] hello [Jim], I'm [Sam]" to "[Greetings] hello [MR Jim], I'm [MR Sam]"
How can I do this via golang regex?
re := regexp.MustCompile(`hello [(\w+)], I'm [(\w+)]`)
Thank you very much!
答案1
得分: 0
如果你有一个段落，需要识别其中的字符串，你可以使用两个正则表达式来实现：
namePattern := `\[(\w+)\]`replacerRegex := regexp.MustCompile(namePattern)finderRegex := regexp.MustCompile("hello " + namePattern + ", I'm " + namePattern)fmt.Println(replacerRegex.ReplaceAllString(finderRegex.FindString("hi hih hi hello [Jim], I'm [Sam]"), "[MR $1]"))
简单的方法来保留字符串的其他部分（注意：可以进行优化，并且需要检查边界情况）：
str := "pre string hello [Jim], I'm [Sam] post string"namePattern := `\[(\w+)\]`finderRegex := regexp.MustCompile("hello " + namePattern + ", I'm " + namePattern)replacerRegex := regexp.MustCompile(namePattern)// 需要替换的字符串部分str_rep := finderRegex.FindString(str)// 字符串分割为前后两部分（注意检查 str_rep 是否为空）strPart := strings.Split(str, str_rep)replaced_str := replacerRegex.ReplaceAllString(str_rep, "[MR $1]")// 拼接得到最终字符串（实现边界情况的检查）finalStr := strPart[0] + replaced_str + strPart[1]fmt.Println(finalStr)
你可以在这里运行代码：https://go.dev/play/p/kv6CfTv0-sk
英文:
If you have a para from which you need to identify the string then may be you could use two regex to achieve it:
namePattern := `\[(\w+)\]`replacerRegex := regexp.MustCompile(namePattern)finderRegex := regexp.MustCompile("hello " + namePattern + ", I'm " + namePattern)fmt.Println(re.ReplaceAllString(re1.FindString("hi hih hi hello [Jim], I'm [Sam]"), "[MR $1]"))
https://go.dev/play/p/kv6CfTv0-sk
EDIT:
simple way to retain other part of string (PS: can be optimized and need checks for edge cases)
str := "pre string hello [Jim], I'm [Sam] post string"namePattern := `\[(\w+)\]`finderRegex := regexp.MustCompile("hello " + namePattern + ", I'm " + namePattern)replacerRegex := regexp.MustCompile(namePattern)// string part subject to replacementstr_rep := finderRegex.FindString(str)// array of string holding the pre and post part ( check for str_rep as it could be empty)strPart := strings.Split(str, str_rep)replaced_str := replacerRegex.ReplaceAllString(str_rep, "[MR $1]")// concat to get the final string (implement checks for edge cases)finalStr := strPart[0] + replaced_str + strPart[1]fmt.Println(finalStr)
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