Function VerifySplit

ShellPkg/Application/Shell/Shell.c:2116–2151

Determine if a command line contains with a split contains only valid commands. @param[in] CmdLine The command line to parse. @retval EFI_SUCCESS CmdLine has only valid commands, application, or has no split. @retval EFI_ABORTED CmdLine has at least one invalid command or application. **/

  @retval EFI_ABORTED     CmdLine has at least one invalid command or application.
**/
EFI_STATUS
VerifySplit(
  IN CONST CHAR16 *CmdLine
  )
{
  CONST CHAR16  *TempSpot;
  EFI_STATUS    Status;

  //
  // If this was the only item, then get out
  //
  if (!ContainsSplit(CmdLine)) {
    return (EFI_SUCCESS);
  }

  //
  // Verify up to the pipe or end character
  //
  Status = IsValidSplit(CmdLine);
  if (EFI_ERROR(Status)) {
    return (Status);
  }

  //
  // recurse to verify the next item
  //
  TempSpot = FindFirstCharacter(CmdLine, L"|", L'^') + 1;
  if (*TempSpot == L'a' &&
      (*(TempSpot + 1) == L' ' || *(TempSpot + 1) == CHAR_NULL)
     ) {
    // If it's an ASCII pipe '|a'
    TempSpot += 1;
  }

  return (VerifySplit(TempSpot));
}

/**
  Process a split based operation.