Function kwsysProcess_Execute

Source/kwsys/ProcessWin32.c:933–1175

#undef KWSYSPE_IDX_CHK

void kwsysProcess_Execute(kwsysProcess* cp)
{
  int i;

  /* Do not execute a second time.  */
  if (!cp || cp->State == kwsysProcess_State_Executing) {
    return;
  }

  /* Make sure we have something to run.  */
  if (cp->NumberOfCommands < 1) {
    strcpy(cp->ErrorMessage, "No command");
    cp->State = kwsysProcess_State_Error;
    return;
  }

  /* Initialize the control structure for a new process.  */
  if (!kwsysProcessInitialize(cp)) {
    strcpy(cp->ErrorMessage, "Out of memory");
    cp->State = kwsysProcess_State_Error;
    return;
  }

  /* Save the real working directory of this process and change to
     the working directory for the child processes.  This is needed
     to make pipe file paths evaluate correctly.  */
  if (cp->WorkingDirectory) {
    if (!GetCurrentDirectoryW(cp->RealWorkingDirectoryLength,
                              cp->RealWorkingDirectory)) {
      kwsysProcessCleanup(cp, GetLastError());
      return;
    }
    if (!SetCurrentDirectoryW(cp->WorkingDirectory)) {
      kwsysProcessCleanup(cp, GetLastError());
      return;
    }
  }

  /* Setup the stdin pipe for the first process.  */
  if (cp->PipeFileSTDIN) {
    /* Create a handle to read a file for stdin.  */
    wchar_t* wstdin = kwsysEncoding_DupToWide(cp->PipeFileSTDIN);
    DWORD error;
    cp->PipeChildStd[0] =
      CreateFileW(wstdin, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
                  OPEN_EXISTING, 0, 0);
    error = GetLastError(); /* Check now in case free changes this.  */
    free(wstdin);
    if (cp->PipeChildStd[0] == INVALID_HANDLE_VALUE) {
      kwsysProcessCleanup(cp, error);
      return;
    }
  } else if (cp->PipeSharedSTDIN) {
    /* Share this process's stdin with the child.  */
    kwsysProcessSetupSharedPipe(STD_INPUT_HANDLE, &cp->PipeChildStd[0]);
  } else if (cp->PipeNativeSTDIN[0]) {
    /* Use the provided native pipe.  */
    kwsysProcessSetupPipeNative(cp->PipeNativeSTDIN[0], &cp->PipeChildStd[0]);