mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-27 05:13:10 +00:00
402 lines
7.1 KiB
C
402 lines
7.1 KiB
C
/*
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Copyright (C) 2005-2006 Axel Liljencrantz
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/** \file main.c
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The main loop of <tt>fish</tt>.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <wchar.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <unistd.h>
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#include <termios.h>
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#include <fcntl.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#include <locale.h>
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#include <signal.h>
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#include "fallback.h"
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#include "util.h"
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#include "common.h"
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#include "reader.h"
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#include "builtin.h"
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#include "function.h"
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#include "complete.h"
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#include "wutil.h"
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#include "env.h"
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#include "sanity.h"
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#include "proc.h"
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#include "parser.h"
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#include "expand.h"
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#include "intern.h"
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#include "exec.h"
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#include "event.h"
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#include "output.h"
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#include "halloc.h"
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#include "halloc_util.h"
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#include "history.h"
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#include "path.h"
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/**
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The string describing the single-character options accepted by the main fish binary
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*/
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#define GETOPT_STRING "hilnvc:p:d:"
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/**
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Parse init files
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*/
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static int read_init()
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{
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wchar_t cwd[4096];
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wchar_t *config_dir;
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wchar_t *config_dir_escaped;
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void *context;
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string_buffer_t *eval_buff;
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if( !wgetcwd( cwd, 4096 ) )
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{
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wperror( L"wgetcwd" );
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return 0;
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}
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eval( L"builtin cd " DATADIR L"/fish 2>/dev/null; and builtin . config.fish 2>/dev/null", 0, TOP );
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eval( L"builtin cd " SYSCONFDIR L"/fish 2>/dev/null; and builtin . config.fish 2>/dev/null", 0, TOP );
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/*
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We need to get the configuration directory before we can source the user configuration file
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*/
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context = halloc( 0, 0 );
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eval_buff = sb_halloc( context );
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config_dir = path_get_config( context );
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config_dir_escaped = escape( config_dir, 1 );
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sb_printf( eval_buff, L"builtin cd %ls 2>/dev/null; and builtin . config.fish 2>/dev/null", config_dir_escaped );
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eval( (wchar_t *)eval_buff->buff, 0, TOP );
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halloc_free( context );
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free( config_dir_escaped );
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if( wchdir( cwd ) == -1 )
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{
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/*
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If we can't change back to previos directory, we go to
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~. Should be a sane default behavior.
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*/
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eval( L"builtin cd", 0, TOP );
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}
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else
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{
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env_set( L"PWD", cwd, ENV_EXPORT );
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}
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return 1;
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}
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static int fish_parse_opt( int argc, char **argv, char **cmd_ptr )
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{
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int my_optind;
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int force_interactive=0;
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while( 1 )
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{
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static struct option
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long_options[] =
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{
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{
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"command", required_argument, 0, 'c'
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}
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,
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{
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"debug-level", required_argument, 0, 'd'
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}
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,
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{
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"interactive", no_argument, 0, 'i'
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}
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,
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{
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"login", no_argument, 0, 'l'
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}
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,
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{
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"no-execute", no_argument, 0, 'n'
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}
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,
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{
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"profile", required_argument, 0, 'p'
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}
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,
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{
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"help", no_argument, 0, 'h'
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}
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,
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{
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"version", no_argument, 0, 'v'
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}
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,
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{
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0, 0, 0, 0
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}
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}
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;
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int opt_index = 0;
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int opt = getopt_long( argc,
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argv,
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GETOPT_STRING,
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long_options,
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&opt_index );
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if( opt == -1 )
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break;
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switch( opt )
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{
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case 0:
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{
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break;
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}
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case 'c':
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{
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*cmd_ptr = optarg;
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is_interactive_session = 0;
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break;
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}
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case 'd':
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{
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char *end;
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int tmp;
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errno = 0;
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tmp = strtol(optarg, &end, 10);
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if( tmp >= 0 && tmp <=10 && !*end && !errno )
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{
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debug_level=tmp;
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}
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else
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{
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debug( 0, _(L"Invalid value '%s' for debug level switch"), optarg );
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exit(1);
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}
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break;
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}
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case 'h':
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{
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*cmd_ptr = "__fish_print_help fish";
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break;
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}
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case 'i':
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{
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force_interactive = 1;
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break;
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}
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case 'l':
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{
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is_login=1;
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break;
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}
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case 'n':
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{
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no_exec=1;
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break;
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}
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case 'p':
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{
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profile = optarg;
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break;
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}
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case 'v':
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{
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fwprintf( stderr,
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_(L"%s, version %s\n"),
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PACKAGE_NAME,
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PACKAGE_VERSION );
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exit( 0 );
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}
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case '?':
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{
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exit( 1 );
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}
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}
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}
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my_optind = optind;
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is_login |= (strcmp( argv[0], "-fish") == 0);
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is_interactive_session &= (*cmd_ptr == 0);
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is_interactive_session &= (my_optind == argc);
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is_interactive_session &= isatty(STDIN_FILENO);
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is_interactive_session |= force_interactive;
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return my_optind;
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}
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/**
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Calls a bunch of init functions, parses the init files and then
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parses commands from stdin or files, depending on arguments
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*/
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int main( int argc, char **argv )
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{
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int res=1;
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char *cmd=0;
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int my_optind=0;
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halloc_util_init();
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wsetlocale( LC_ALL, L"" );
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is_interactive_session=1;
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program_name=L"fish";
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my_optind = fish_parse_opt( argc, argv, &cmd );
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/*
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No-exec is prohibited when in interactive mode
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*/
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if( is_interactive_session && no_exec)
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{
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debug( 1, _(L"Can not use the no-execute mode when running an interactive session") );
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no_exec = 0;
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}
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proc_init();
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event_init();
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wutil_init();
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parser_init();
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builtin_init();
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function_init();
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env_init();
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reader_init();
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history_init();
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if( read_init() )
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{
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if( cmd != 0 )
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{
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wchar_t *cmd_wcs = str2wcs( cmd );
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res = eval( cmd_wcs, 0, TOP );
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free(cmd_wcs);
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reader_exit(0, 0);
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}
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else
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{
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if( my_optind == argc )
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{
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res = reader_read( 0 );
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}
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else
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{
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char **ptr;
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char *file = *(argv+1);
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int i;
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string_buffer_t sb;
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int fd;
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wchar_t *rel_filename, *abs_filename;
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if( ( fd = open(file, O_RDONLY) ) == -1 )
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{
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wperror( L"open" );
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return 1;
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}
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if( *(argv+2))
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{
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sb_init( &sb );
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for( i=1,ptr = argv+2; *ptr; i++, ptr++ )
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{
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if( i != 1 )
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sb_append( &sb, ARRAY_SEP_STR );
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wchar_t *val = str2wcs( *ptr );
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sb_append( &sb, val );
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free( val );
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}
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env_set( L"argv", (wchar_t *)sb.buff, 0 );
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sb_destroy( &sb );
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}
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rel_filename = str2wcs( file );
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abs_filename = wrealpath( rel_filename, 0 );
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if( !abs_filename )
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abs_filename = wcsdup(rel_filename);
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reader_push_current_filename( intern( abs_filename ) );
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free( rel_filename );
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free( abs_filename );
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res = reader_read( fd );
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if( res )
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{
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debug( 1,
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_(L"Error while reading file %ls\n"),
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reader_current_filename()?reader_current_filename(): _(L"Standard input") );
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}
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reader_pop_current_filename();
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}
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}
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}
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proc_fire_event( L"PROCESS_EXIT", EVENT_EXIT, getpid(), res );
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history_destroy();
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proc_destroy();
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builtin_destroy();
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function_destroy();
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reader_destroy();
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parser_destroy();
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wutil_destroy();
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event_destroy();
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halloc_util_destroy();
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env_destroy();
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intern_free_all();
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return res?STATUS_UNKNOWN_COMMAND:proc_get_last_status();
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}
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