Use regular expressions in golang to verify whether the input is full-width punctuation

Golang is an efficient programming language that supports powerful regular expression functions, making it very simple to validate input data. In this article, we will discuss how to use regular expressions to verify whether a string is full-width punctuation.

Full-width punctuation refers to the punctuation marks in Chinese, Japanese, Korean and other character sets. In Golang, we can use regular expressions to match punctuation marks in these character sets. The following is a simple sample code:

package main

import (
    "fmt"
    "regexp"
)

func main() {
    input := "你好，世界！"
    re := regexp.MustCompile(`^[p{Han}p{Katakana}p{Hiragana}p{Hangul}！？，。、]+$`)
    result := re.MatchString(input)
    fmt.Println(result)
}

In the above code, we first define a string input, which contains Chinese characters, Japanese characters and punctuation marks. Next, we use the p character class in regular expressions to match all punctuation marks contained in the Chinese character set. [p{Han}p{Katakana}p{Hiragana}p{Hangul} in regular expressions! ? ,. , ] means matching one or more punctuation marks in the Chinese, Japanese, and Korean character sets, as well as commas, periods, and pauses in the Chinese character set.

Finally, we use the re.MatchString() function to determine whether the input string conforms to the rules of the regular expression. If it matches, return true; otherwise, return false.

In actual projects, we can encapsulate the above code into a function, which is convenient for us to call in multiple places. The following is a relatively complete verification function example:

func IsValidPunctuation(input string) bool {
    re := regexp.MustCompile(`^[p{Han}p{Katakana}p{Hiragana}p{Hangul}！？，。、]+$`)
    return re.MatchString(input)
}

Through the above code, we can quickly verify whether the input string is full-width punctuation, avoiding some input errors or incorrectly formatted data.

To summarize, it is very simple to use regular expressions in Golang to verify whether the input is full-width punctuation. We can use the p character class in regular expressions to match punctuation marks in various Chinese, Japanese, and Korean character sets, and encapsulate them into functions for easy calling in projects.

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