GML中巴西葡萄牙语特殊字符归一化的更优实现方案咨询

针对你遇到的string_lower()无法处理带重音大写字符（如Á）、手动维护字符数组冗余的问题，推荐两种更优的实现方式：

方法1：Unicode规范化（推荐，GameMaker Studio 2.3+适用） #

利用Unicode的NFD（规范分解）格式，将带重音的字符拆分为基础字符+重音标记，再移除重音标记，无需手动维护字符映射：

function string_normalize(str) {
    // 统一转换为小写（GMS 2.3+的string_lower已支持Unicode字符）
    str = string_lower(str);
    // 将字符串转换为NFD规范形式，拆分重音与基础字符
    str = string_utf8_normalize(str, "NFD");
    // 移除所有Unicode重音标记（U+0300至U+036F范围）
    str = string_replace_all_regex(str, "[\\x{0300}-\\x{036F}]", "");
    return str;
}

优势： #

• 无需手动维护重音字符数组，避免遗漏或冗余
• 自动支持所有带重音的Unicode字符，覆盖巴西葡语全部特殊字符（如Á、Ã、Ç等）
• 代码简洁，扩展性强，后续无需因新增字符修改代码

方法2：优化字符映射（兼容旧版GameMaker） #

若使用旧版本GameMaker，无法使用Unicode规范化函数，可先统一处理大写带重音字符的转换，再替换重音：

function string_normalize(str) {
    // 定义大写重音字符与对应小写、基础字符的映射
    var upper_accents = ["À","Á","Â","Ã","Ä","È","É","Ê","Ë","Ì","Í","Î","Ï","Ò","Ó","Ô","Õ","Ö","Ù","Ú","Û","Ü","Ç"];
    var lower_accents = ["à","á","â","ã","ä","è","é","ê","ë","ì","í","î","ï","ò","ó","ô","õ","ö","ù","ú","û","ü","ç"];
    var simple_chars = ["a","a","a","a","a","e","e","e","e","i","i","i","i","o","o","o","o","o","u","u","u","u","c"];

    // 先将大写重音字符转为小写
    for (var i = 0; i < array_length(upper_accents); i++) {
        str = string_replace_all(str, upper_accents[i], lower_accents[i]);
    }
    // 转换剩余普通大写字符为小写
    str = string_lower(str);
    // 替换小写重音字符为基础字符
    for (var i = 0; i < array_length(lower_accents); i++) {
        str = string_replace_all(str, lower_accents[i], simple_chars[i]);
    }

    return str;
}

优势： #

• 解决了原函数中string_lower()无法处理带重音大写的问题
• 仅需维护一套映射关系，避免重复定义冗余的字符数组

内容的提问来源于stack exchange，提问作者Leocruz