Windows 执行命令行程序并读取输出

ExeWindowsCmd.c

static int
ExeWindowsCmd(char *result, int reslen, const char *pszCmd)
{
    int rc = 0;


    SECURITY_ATTRIBUTES sa = { sizeof(SECURITY_ATTRIBUTES), NULL, TRUE };
    HANDLE hRead, hWrite;
    if (!CreatePipe(&hRead, &hWrite, &sa, 0))
    {
        return -1;
    }


    STARTUPINFO si = { sizeof(STARTUPINFO) };
    GetStartupInfo(&si);
    si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
    si.wShowWindow = SW_HIDE;
    si.hStdError = hWrite;
    si.hStdOutput = hWrite;


    PROCESS_INFORMATION pi;
    if (!CreateProcess(NULL, pszCmd, NULL, NULL, TRUE, NULL, NULL, NULL, &si, &pi))
    {
        return -1;
    }

    CloseHandle(hWrite);

#define BUFSIZE 1024
    char buff[BUFSIZE] = { 0 };
    DWORD dwRead = 0;
    BOOL bSuccess;

    for (;;)
    {
        // Read from standard input and stop on error or no data.
        bSuccess = ReadFile(hRead, buff, BUFSIZE, &dwRead, NULL);

        strncat(result, buff, dwRead);
        memset(buff, 0, sizeof(BUFSIZE));

        if (!bSuccess || dwRead == 0) {
            break;
        }
    }
    result[reslen - 1] = '\0';

    CloseHandle(hRead);

    return rc;
}