【C++】linux下头文件io.h的巨坑

 

摘要:采用 io.h 头文件提供的函数读取指定文件夹中多个文件(文件名没有规律)

系统配置:ubuntu16.04, cmake编译

读取文件的代码如下,

void getFilesAll(string path, vector<string>& files) {
    //文件句柄
    long hFile = 0;
    //文件信息
    struct _finddata_t fileinfo;
    string p;  
    if ((hFile = _findfirst(p.assign(path).append("\\*").c_str(), &fileinfo)) != -1) {
        do {
            if ((fileinfo.attrib & _A_SUBDIR)) {
                if (strcmp(fileinfo.name,".") != 0  &&  strcmp(fileinfo.name,"..") != 0) {
                    //files.push_back(p.assign(path).append("\\").append(fileinfo.name));
                    getFilesAll(p.assign(path).append("\\").append(fileinfo.name), files);
                }
            } 
            else {  
                files.push_back(p.assign(path).append("\\").append(fileinfo.name));
            }
        } while (_findnext(hFile, &fileinfo) == 0);
        _findclose(hFile);
     }
}

第一次编译后报错:

error: aggregate ‘*********’ has incomplete type and cannot be defined

解决方法: struct _finddata_t fileinfo; 将struct去除, _finddata_t fileinfo; 

 

第二次编译后报错:

error: ‘_finddata_t’ was not declared in this scope

error: ‘_findfirst’ was not declared in this scope

error: ‘_A_SUBDIR’ was not declared in this scope

error: ‘_findnext’ was not declared in this scope

error: ‘_findclose’ was not declared in this scope

尝试过很多方法,包括修改头文件格式,修改CMakeLists.txt的include路径,复制io.h文件到 /usr/include/ 路径下,都失败了。

最后在github的issue上看到有人提到,io.h 头文件可能不兼容跨平台操作。在windows下这个头文件运行稳定,但是在linux下这个头文件不能正常运行。

巨坑呐!!!是真的不兼容吗,还是存在其他问题?求高人指点!

 

文章来自:https://www.cnblogs.com/gdut-gordon/p/9678175.html
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