How to solve the Chinese garbled problem in Golang command line program

Golang is a programming language that is widely used in fields such as network programming, distributed programming, and cloud computing. When using Golang to write command line programs, Chinese garbled characters may appear. This article will introduce how to solve the Chinese garbled problem in Golang command line program.

1. Analysis of the causes of garbled code problems

1. Inconsistent character encoding

When we use fmt.Print() or fmt.Println in Golang () When outputting Chinese, if different character encodings are used in Windows and Linux environments, Chinese garbled characters will appear. Windows systems use GB2312 character encoding by default, while Linux systems usually use UTF-8 character encoding.

2. The terminal does not support Chinese display

Some terminals may not support Chinese display, which will also cause garbled characters when outputting Chinese.

3. Character set conversion problem

Strings in Golang use UTF-8 character encoding by default. If it is not processed correctly when converting the character set, it will also cause Chinese Garbled characters.

2. Solution

1. Set the terminal encoding

In Linux system, you can use the following command to set the terminal encoding:

export LANG=zh_CN.UTF-8

In Windows systems, after opening the command line window, you can right-click "Properties" in the window title bar and set the "Code Page" option in the "Options" tab for "inheritance".

2. Use Golang's unicode/utf8 package

Golang provides the unicode/utf8 package to solve the problem of character set conversion. By calling the functions in the utf8 package, strings in other character sets can be converted into UTF-8 encoding, thereby avoiding the problem of Chinese garbled characters.

For example:

package main

import (
    "fmt"
    "unicode/utf8"
)

func main() {
    s := "中文测试"

    fmt.Println(s)

    // 将s转换成UTF-8编码
    b := make([]byte, len(s))
    n := utf8.EncodeRune(b, '中')
    fmt.Println(string(b[:n]))

    // 判断字符串s是否为UTF-8编码
    fmt.Println(utf8.ValidString(s))
}

Execute the above code to solve the problem of Chinese garbled characters.

3. Use third-party package

In addition to the above methods, you can also use a third-party printing library or command line library to solve the problem of Chinese garbled characters. For example, when outputting from the command line, using the uiprogress library can avoid the problem of Chinese garbled characters.

The following code demonstrates how to use the uiprogress library in command line output:

package main

import (
    "fmt"

    "github.com/gosuri/uiprogress"
)

func main() {
    // 创建一个进度条
    uiprogress.Start()             
    bar := uiprogress.AddBar(100)  

    // 设置进度条样式
    bar.PrependCompleted()
    bar.AppendElapsed()

    // 输出进度条
    for i := 0; i < 100; i++ {
        bar.Incr()
        fmt.Println("正在进行中...")
    }
    fmt.Println("完成！")
}

Summary

Chinese garbled characters are a common problem in the development of Golang command line programs. The solutions mainly include setting the terminal encoding, using the unicode/utf8 package provided by the Go language, and using third-party libraries. For developers who use Golang to develop command line programs, it is very necessary to solve the problem of Chinese garbled characters.

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