builtins/eval.def

   1 This file is eval.def, from which is created eval.c.
   2 It implements the builtin "eval" in Bash.
   3
   4 Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Bash, the Bourne Again SHell.
   7
   8 Bash is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 2, or (at your option) any later
  11 version.
  12
  13 Bash is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License along
  19 with Bash; see the file COPYING.  If not, write to the Free Software
  20 Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
  21
  22 $PRODUCES eval.c
  23
  24 $BUILTIN eval
  25 $FUNCTION eval_builtin
  26 $SHORT_DOC eval [arg ...]
  27 Read ARGs as input to the shell and execute the resulting command(s).
  28 $END
  29
  30 #include <config.h>
  31 #if defined (HAVE_UNISTD_H)
  32 #  ifdef _MINIX
  33 #    include <sys/types.h>
  34 #  endif
  35 #  include <unistd.h>
  36 #endif
  37
  38 #include "../shell.h"
  39 #include "bashgetopt.h"
  40 #include "common.h"
  41
  42 /* Parse the string that these words make, and execute the command found. */
  43 int
  44 eval_builtin (list)
  45      WORD_LIST *list;
  46 {
  47   if (no_options (list))
  48     return (EX_USAGE);
  49
  50   /* Note that parse_and_execute () frees the string it is passed. */
  51   return (list ? parse_and_execute (string_list (list), "eval", SEVAL_NOHIST) : EXECUTION_SUCCESS);
  52 }