LUA程序编码批量转换程序utf-8转gbk

文章编辑人员：雪舞
内容测试时间：2023-6-3 11:46:31
测试环境：Windows 10

目的将当前目录所有的lua程序转换为gbk格式，原来的文件则备份为*.bak

#include <windows.h>
#include <stdio.h>

void Utf8ToGbk(char* utf8, int len_utf8, char* gbk, int len_gbk) {
    int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0);
    wchar_t* wszGBK = (wchar_t*)malloc(sizeof(wchar_t) * len);
    memset(wszGBK, 0, len * sizeof(wchar_t));
    MultiByteToWideChar(CP_UTF8, 0, utf8, -1, wszGBK, len);

    len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL);
    WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, gbk, len, NULL, NULL);
    
    if (wszGBK) {
        free(wszGBK);
    }
}

void convert_file(const char* filename) {
    // Open file in binary mode, read into buffer
    FILE* file = fopen(filename, "rb");
    fseek(file, 0, SEEK_END);
    long fsize = ftell(file);
    fseek(file, 0, SEEK_SET); 

    char* string = (char*)malloc(fsize + 1);
    fread(string, fsize, 1, file);
    fclose(file);
    string[fsize] = 0;

    // Convert buffer from UTF-8 to GBK
    char* gbk = (char*)malloc(fsize * 2 + 1);  // allocate enough space
    Utf8ToGbk(string, fsize + 1, gbk, fsize * 2 + 1);

    // Check if a backup already exists, if not, create one
    char backupFileName[260];
    snprintf(backupFileName, sizeof(backupFileName), "%s.bak", filename);
    if (fopen(backupFileName, "r") == NULL) {
        rename(filename, backupFileName);
    }

    // Write the converted buffer into original file
    file = fopen(filename, "wb");
    fwrite(gbk, strlen(gbk), 1, file);
    fclose(file);

    printf("已修复的文件：%s\n", filename);

    free(string);
    free(gbk);
}

int main() {
    WIN32_FIND_DATAA findData;
    HANDLE hFind = FindFirstFileA(".\\*.lua", &findData);

    if (hFind == INVALID_HANDLE_VALUE) {
        printf("FindFirstFile failed (%d)\n", GetLastError());
        return -1;
    }

    do {
        if (!(findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
            printf("%s\n", findData.cFileName);
            convert_file(findData.cFileName);
        }
    } while (FindNextFileA(hFind, &findData) != 0);

    FindClose(hFind);

    printf("按回车键退出...");
    getchar();

    return 0;
}