golang 中文处理

查看字符串

方式1

   const nihongo = "日本語"
    for index, runeValue := range nihongo {
        fmt.Printf("%#U starts at byte position %d\n", runeValue, index)
    }

方式2

   
   const nihongo = "日本語"
   for i, w := 0, 0; i < len(nihongo); i += w {
       runeValue, width := utf8.DecodeRuneInString(nihongo[i:])
       fmt.Printf("%#U starts at byte position %d\n", runeValue, i)
        fmt.Printf("%c starts at byte position %d\n", runeValue, i)
       w = width
 }

Golang 文本长度

package main

import (
	"fmt"
	"unicode/utf8"
)

func main() {
	buf := []byte("Hello, 世界")
	fmt.Println("bytes =", len(buf))
	fmt.Println("runes =", utf8.RuneCount(buf))
}

子字符串

	s := "我就这是good，给力666"

	sizesplit := 0
	re := ""
	for _, runeValue := range s {
	    if sizesplit <= 3 {
	    	continue
	    }
		if sizesplit >= 20 {
			break
		}
		re += fmt.Sprintf("%c", runeValue)
	}
	fmt.Println(re)

引用

https://blog.golang.org/strings
https://golang.org/pkg/unicode/utf8/#RuneCount