windows/linux/mac通过c++执行终端命令（或脚本）获取输出到字符串

吵山从逃

于 2021-03-26 15:00:00 发布

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文章标签： C++ 命令行 _popen 文件流读取输出

本文链接：https://blog.youkuaiyun.com/u011018840/article/details/115245027

版权

void getOutbyCmd(const string cmdStr, string &outStr)
{
    FILE *fileStream = NULL;
    #ifdef WIN32
    if ((fileStream = _popen(cmdStr.c_str(), "r")) == NULL)
    #else
    if ((fileStream = ::popen(cmdStr.c_str(), "r")) == NULL)
    #endif
    {
        return;
    }

	size_t bufferSize = 2048;
    char buffer[bufferSize];
    while(!feof(fileStream))
    {
        fgets(buffer, bufferSize - 1, fileStream);
        outStr += string(buffer);
    }

    #ifdef WIN32
    _pclose(fileStream);
    #else
    ::pclose(fileStream);
    #endif
}