如何将 ASCII 的字母转成 UTF-8 - V2EX
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songdg

如何将 ASCII 的字母转成 UTF-8

  •  
  •   songdg Aug 31, 2020 3216 views
    This topic created in 2081 days ago, the information mentioned may be changed or developed.
    譬如'我选 A' [ord('A')=65]转成'我选A' [ord('A')=65313]
    8 replies    2020-09-02 09:29:42 +08:00
    ysc3839
        1
    ysc3839  
       Aug 31, 2020 via Android
    你举的例子应该是把半角字母转换成全角字母。
    可以直接用个 map 记录对应关系,然后遍历每个字符,去 map 中看是否有对应关系。
    ysc3839
        2
    ysc3839  
       Aug 31, 2020 via Android   1
    或者可以利用 Unicode 全角字符和对应的半角字符编码值相差 0xFEE0 的特性,先判断字符编码是否在要转换的范围内,是的话就加上 0xFEE0 。
    https://stackoverflow.com/a/36693548
    baobao1270
        3
    baobao1270  
       Aug 31, 2020   1
    1 、你的需求不叫 ASCII 转 UTF-8,而是全角转半角,准确的说是标准的西文字符转换为国标宽字符。ASCII 和 UTF-8 只是编码,而你要转换的是字符。
    2 、转换方式:查表
    fxxwor99LVHTing
        4
    fxxwor99LVHTing  
       Aug 31, 2020   1
    utf8 兼容 ascii 字符集的
    songdg
        5
    songdg  
    OP
       Sep 2, 2020
    @ysc3839 谢谢,知识太匮乏了。
    songdg
        6
    songdg  
    OP
       Sep 2, 2020
    @ysc3839 谢谢帮助,都没想到全角和半角的问题。
    songdg
        7
    songdg  
    OP
       Sep 2, 2020
    @a href="/member/fxxwor99LVHTing">fxxwor99LVHTing 谢谢帮助
    songdg
        8
    songdg  
    OP
       Sep 2, 2020
    @baobao1270 谢谢帮助
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