Imported from ../bash-4.0-rc1.tar.gz.
This commit is contained in:
Jari Aalto
parent
f1be666c7d
commit
3185942a52
666 changed files with 188710 additions and 54674 deletions
96
shell.c
96
shell.c
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@ -1,23 +1,24 @@
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/* shell.c -- GNU's idea of the POSIX shell specification. */
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/* Copyright (C) 1987-2005 Free Software Foundation, Inc.
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/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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Birthdate:
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Sunday, January 10th, 1988.
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Initial author: Brian Fox
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@ -71,6 +72,10 @@
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# include <readline/history.h>
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#endif
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#if defined (READLINE)
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# include "bashline.h"
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#endif
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#include <tilde/tilde.h>
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#include <glob/strmatch.h>
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@ -139,6 +144,12 @@ int interactive_shell = 0;
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shell exits. */
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int hup_on_exit = 0;
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/* Non-zero means to list status of running and stopped jobs at shell exit */
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int check_jobs_at_exit = 0;
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/* Non-zero means to change to a directory name supplied as a command name */
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int autocd = 0;
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/* Tells what state the shell was in when it started:
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0 = non-interactive shell script
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1 = interactive
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@ -172,6 +183,13 @@ time_t shell_start_time;
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/* Are we running in an emacs shell window? */
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int running_under_emacs;
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/* Do we have /dev/fd? */
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#ifdef HAVE_DEV_FD
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int have_devfd = HAVE_DEV_FD;
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#else
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int have_devfd = 0;
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#endif
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/* The name of the .(shell)rc file. */
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static char *bashrc_file = "~/.bashrc";
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@ -212,8 +230,8 @@ int posixly_correct = 0; /* Non-zero means posix.2 superset. */
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/* Some long-winded argument names. These are obviously new. */
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#define Int 1
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#define Charp 2
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struct {
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char *name;
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static const struct {
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const char *name;
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int type;
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int *int_value;
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char **char_value;
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@ -292,6 +310,7 @@ static int uidget __P((void));
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static void init_interactive __P((void));
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static void init_noninteractive __P((void));
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static void init_interactive_script __P((void));
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static void set_shell_name __P((char *));
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static void shell_initialize __P((void));
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@ -535,19 +554,26 @@ main (argc, argv, env)
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set_default_lang ();
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set_default_locale_vars ();
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/*
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* M-x term -> TERM=eterm EMACS=22.1 (term:0.96) (eterm)
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* M-x shell -> TERM=dumb EMACS=t (no line editing)
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* M-x terminal -> TERM=emacs-em7955 EMACS= (line editing)
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*/
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if (interactive_shell)
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{
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char *term, *emacs;
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term = get_string_value ("TERM");
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no_line_editing |= term && (STREQ (term, "emacs"));
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emacs = get_string_value ("EMACS");
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running_under_emacs = emacs ? ((strstr (emacs, "term") != 0) ? 2 : 1) : 0;
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#if 0
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no_line_editing |= emacs && emacs[0] == 't' && emacs[1] == '\0';
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#else
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/* Not sure any emacs terminal emulator sets TERM=emacs any more */
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no_line_editing |= term && (STREQ (term, "emacs"));
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no_line_editing |= emacs && emacs[0] == 't' && emacs[1] == '\0' && STREQ (term, "dumb");
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#endif
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/* running_under_emacs == 2 for `eterm' */
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running_under_emacs = (emacs != 0) || (term && STREQN (term, "emacs", 5));
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running_under_emacs += term && STREQN (term, "eterm", 5) && strstr (emacs, "term");
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if (running_under_emacs)
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gnu_error_format = 1;
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}
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@ -687,8 +713,8 @@ main (argc, argv, env)
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if (interactive_shell)
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{
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/* Set up for checking for presence of mail. */
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remember_mail_dates ();
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reset_mail_timer ();
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init_mail_dates ();
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#if defined (HISTORY)
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/* Initialize the interactive history stuff. */
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@ -880,6 +906,10 @@ exit_shell (s)
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maybe_save_shell_history ();
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#endif /* HISTORY */
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#if defined (COPROCESS_SUPPORT)
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coproc_flush ();
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#endif
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#if defined (JOB_CONTROL)
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/* If the user has run `shopt -s huponexit', hangup all jobs when we exit
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an interactive login shell. ksh does this unconditionally. */
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@ -1416,7 +1446,7 @@ open_shell_script (script_name)
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}
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else if (sample_len > 0 && (check_binary_file (sample, sample_len)))
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{
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internal_error ("%s: cannot execute binary file", filename);
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internal_error (_("%s: cannot execute binary file"), filename);
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exit (EX_BINARY_FILE);
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}
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/* Now rewind the file back to the beginning. */
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@ -1426,7 +1456,7 @@ open_shell_script (script_name)
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/* Open the script. But try to move the file descriptor to a randomly
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large one, in the hopes that any descriptors used by the script will
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not match with ours. */
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fd = move_to_high_fd (fd, 0, -1);
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fd = move_to_high_fd (fd, 1, -1);
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#if defined (__CYGWIN__) && defined (O_TEXT)
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setmode (fd, O_TEXT);
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@ -1467,7 +1497,7 @@ open_shell_script (script_name)
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/* But if a script is called with something like `bash -i scriptname',
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we need to do a non-interactive setup here, since we didn't do it
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before. */
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init_noninteractive ();
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init_interactive_script ();
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free (filename);
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return (fd);
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@ -1511,6 +1541,7 @@ unset_bash_input (check_zero)
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{
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close_buffered_fd (default_buffered_input);
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default_buffered_input = bash_input.location.buffered_fd = -1;
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bash_input.type = st_none; /* XXX */
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}
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#else /* !BUFFERED_INPUT */
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if (default_input)
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@ -1560,8 +1591,8 @@ set_shell_name (argv0)
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static void
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init_interactive ()
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{
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interactive_shell = startup_state = interactive = 1;
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expand_aliases = 1;
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expand_aliases = interactive_shell = startup_state = 1;
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interactive = 1;
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}
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static void
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@ -1578,6 +1609,13 @@ init_noninteractive ()
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#endif /* JOB_CONTROL */
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}
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static void
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init_interactive_script ()
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{
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init_noninteractive ();
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expand_aliases = interactive_shell = startup_state = 1;
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}
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void
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get_current_user_info ()
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{
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@ -1719,6 +1757,12 @@ shell_reinitialize ()
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delete_all_contexts (shell_variables);
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delete_all_variables (shell_functions);
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reinit_special_variables ();
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#if defined (READLINE)
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bashline_reinitialize ();
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#endif
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shell_reinitialized = 1;
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}
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@ -1731,7 +1775,7 @@ show_shell_usage (fp, extra)
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char *set_opts, *s, *t;
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if (extra)
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fprintf (fp, "GNU bash, version %s-(%s)\n", shell_version_string (), MACHTYPE);
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fprintf (fp, _("GNU bash, version %s-(%s)\n"), shell_version_string (), MACHTYPE);
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fprintf (fp, _("Usage:\t%s [GNU long option] [option] ...\n\t%s [GNU long option] [option] script-file ...\n"),
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shell_name, shell_name);
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fputs (_("GNU long options:\n"), fp);
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