| 1 | /* Evaluate a string as one or more shell commands.
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| 2 |
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| 3 | Copyright (C) 1996-2005 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is part of GNU Bash, the Bourne Again SHell.
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| 6 |
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| 7 | Bash is free software; you can redistribute it and/or modify it under
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| 8 | the terms of the GNU General Public License as published by the Free
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| 9 | Software Foundation; either version 2, or (at your option) any later
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| 10 | version.
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| 11 |
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| 12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 15 | for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License along
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| 18 | with Bash; see the file COPYING. If not, write to the Free Software
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| 19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 20 |
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| 21 | #include <config.h>
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| 22 |
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| 23 | #if defined (HAVE_UNISTD_H)
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| 24 | # ifdef _MINIX
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| 25 | # include <sys/types.h>
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| 26 | # endif
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| 27 | # include <unistd.h>
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| 28 | #endif
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| 29 |
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| 30 | #include <stdio.h>
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| 31 | #include <signal.h>
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| 32 |
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| 33 | #include <errno.h>
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| 34 |
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| 35 | #include "filecntl.h"
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| 36 | #include "../bashansi.h"
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| 37 |
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| 38 | #include "../shell.h"
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| 39 | #include "../jobs.h"
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| 40 | #include "../builtins.h"
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| 41 | #include "../flags.h"
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| 42 | #include "../input.h"
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| 43 | #include "../execute_cmd.h"
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| 44 | #include "../redir.h"
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| 45 | #include "../trap.h"
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| 46 |
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| 47 | #if defined (HISTORY)
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| 48 | # include "../bashhist.h"
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| 49 | #endif
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| 50 |
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| 51 | #include "common.h"
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| 52 |
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| 53 | #if !defined (errno)
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| 54 | extern int errno;
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| 55 | #endif
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| 56 |
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| 57 | #define IS_BUILTIN(s) (builtin_address_internal(s, 0) != (struct builtin *)NULL)
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| 58 |
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| 59 | extern int indirection_level, startup_state, subshell_environment;
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| 60 | extern int line_number;
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| 61 | extern int last_command_exit_value;
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| 62 | extern int running_trap;
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| 63 | extern int loop_level;
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| 64 | extern int posixly_correct;
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| 65 |
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| 66 | int parse_and_execute_level = 0;
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| 67 |
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| 68 | static int cat_file __P((REDIRECT *));
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| 69 |
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| 70 | /* How to force parse_and_execute () to clean up after itself. */
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| 71 | void
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| 72 | parse_and_execute_cleanup ()
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| 73 | {
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| 74 | if (running_trap)
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| 75 | {
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| 76 | run_trap_cleanup (running_trap - 1);
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| 77 | unfreeze_jobs_list ();
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| 78 | }
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| 79 | run_unwind_frame ("parse_and_execute_top");
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| 80 | }
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| 81 |
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| 82 | /* Parse and execute the commands in STRING. Returns whatever
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