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weechat/src/core/weechat.c
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Sebastien Helleu 49aacc853c core: add shared strings to reduce memory usage 
Shared strings are stored in a hashtable with pointer for keys (values are not
used).

The key has a reference count + the string.
The initial reference count is set to 1 and is incremented each time the same
string is asked.

When removing a shared string, the reference count is decremented.
If it becomes 0, then the shared string is removed from the hashtable (and then
the string is really destroyed).
2013-08-10 18:20:49 +02:00

496 lines
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/* ##########################################################################
* ## ___ __ ______________ _____ ##
* ## __ | / /___________ ____/__ /_______ __ /_ ##
* ## __ | /| / /_ _ \ _ \ / __ __ \ __ `/ __/ ##
* ## __ |/ |/ / / __/ __/ /___ _ / / / /_/ // /_ ##
* ## ____/|__/ \___/\___/\____/ /_/ /_/\__,_/ \__/ ##
* ## ##
* ## WeeChat - Wee Enhanced Environment for Chat ##
* ## Fast, light, extensible chat client ##
* ## ##
* ## By Sebastien Helleu <flashcode@flashtux.org> ##
* ## ##
* ## http://www.weechat.org/ ##
* ## ##
* ##########################################################################
*
* weechat.c - WeeChat main functions
*
* Copyright (C) 2003-2013 Sebastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* WeeChat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WeeChat. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <time.h>
#include <signal.h>
#ifdef HAVE_LANGINFO_CODESET
#include <langinfo.h>
#endif
#include "weechat.h"
#include "wee-command.h"
#include "wee-completion.h"
#include "wee-config.h"
#include "wee-debug.h"
#include "wee-eval.h"
#include "wee-hdata.h"
#include "wee-hook.h"
#include "wee-log.h"
#include "wee-network.h"
#include "wee-proxy.h"
#include "wee-secure.h"
#include "wee-string.h"
#include "wee-upgrade.h"
#include "wee-utf8.h"
#include "wee-util.h"
#include "wee-version.h"
#include "../gui/gui-chat.h"
#include "../gui/gui-color.h"
#include "../gui/gui-completion.h"
#include "../gui/gui-key.h"
#include "../gui/gui-layout.h"
#include "../gui/gui-main.h"
#include "../plugins/plugin.h"
int weechat_debug_core = 0; /* debug level for core */
char *weechat_argv0 = NULL; /* WeeChat binary file name (argv[0])*/
int weechat_upgrading = 0; /* =1 if WeeChat is upgrading */
time_t weechat_first_start_time = 0; /* start time (used by /uptime cmd) */
int weechat_upgrade_count = 0; /* number of /upgrade done */
struct timeval weechat_current_start_timeval; /* start time used to display */
/* duration of /upgrade */
int weechat_quit = 0; /* = 1 if quit request from user */
int weechat_sigsegv = 0; /* SIGSEGV received? */
char *weechat_home = NULL; /* home dir. (default: ~/.weechat) */
char *weechat_local_charset = NULL; /* example: ISO-8859-1, UTF-8 */
int weechat_server_cmd_line = 0; /* at least 1 server on cmd line */
int weechat_auto_load_plugins = 1; /* auto load plugins */
int weechat_plugin_no_dlclose = 0; /* remove calls to dlclose for libs */
/* (useful with valgrind) */
int weechat_no_gnutls = 0; /* remove init/deinit of gnutls */
/* (useful with valgrind/electric-f.)*/
int weechat_no_gcrypt = 0; /* remove init/deinit of gcrypt */
/* (useful with valgrind) */
char *weechat_startup_commands = NULL; /* startup commands (-r flag) */
/*
* Displays WeeChat copyright on standard output.
*/
void
weechat_display_copyright ()
{
string_iconv_fprintf (stdout, "\n");
string_iconv_fprintf (stdout,
/* TRANSLATORS: "%s %s" after "compiled on" is date and time */
_("WeeChat %s Copyright %s, compiled on %s %s\n"
"Developed by Sebastien Helleu <flashcode@flashtux.org> "
"- %s"),
version_get_version_with_git (),
WEECHAT_COPYRIGHT_DATE,
version_get_compilation_date (),
version_get_compilation_time (),
WEECHAT_WEBSITE);
string_iconv_fprintf (stdout, "\n");
}
/*
* Displays WeeChat usage on standard output.
*/
void
weechat_display_usage (char *exec_name)
{
weechat_display_copyright ();
string_iconv_fprintf (stdout, "\n");
string_iconv_fprintf (stdout,
_("Usage: %s [option...] [plugin:option...]\n"),
exec_name, exec_name);
string_iconv_fprintf (stdout, "\n");
string_iconv_fprintf (stdout,
_(" -a, --no-connect disable auto-connect to servers at startup\n"
" -c, --colors display default colors in terminal\n"
" -d, --dir <path> set WeeChat home directory (default: ~/.weechat)\n"
" -h, --help display this help\n"
" -l, --license display WeeChat license\n"
" -p, --no-plugin don't load any plugin at startup\n"
" -r, --run-command <cmd> run command(s) after startup\n"
" (many commands can be separated by semicolons)\n"
" -s, --no-script don't load any script at startup\n"
" --upgrade upgrade WeeChat using session files (see /help upgrade in WeeChat)\n"
" -v, --version display WeeChat version\n"
" plugin:option option for plugin (see man weechat)\n"));
string_iconv_fprintf(stdout, "\n");
}
/*
* Parses command line arguments.
*
* Arguments argc and argv come from main() function.
*/
void
weechat_parse_args (int argc, char *argv[])
{
int i;
weechat_argv0 = strdup (argv[0]);
weechat_upgrading = 0;
weechat_home = NULL;
weechat_server_cmd_line = 0;
weechat_auto_load_plugins = 1;
weechat_plugin_no_dlclose = 0;
for (i = 1; i < argc; i++)
{
if ((strcmp (argv[i], "-c") == 0)
|| (strcmp (argv[i], "--colors") == 0))
{
gui_color_display_terminal_colors ();
weechat_shutdown (EXIT_SUCCESS, 0);
}
else if ((strcmp (argv[i], "-d") == 0)
|| (strcmp (argv[i], "--dir") == 0))
{
if (i + 1 < argc)
weechat_home = strdup (argv[++i]);
else
{
string_iconv_fprintf (stderr,
_("Error: missing argument for \"%s\" "
"option\n"),
argv[i]);
weechat_shutdown (EXIT_FAILURE, 0);
}
}
else if ((strcmp (argv[i], "-h") == 0)
|| (strcmp (argv[i], "--help") == 0))
{
weechat_display_usage (argv[0]);
weechat_shutdown (EXIT_SUCCESS, 0);
}
else if ((strcmp (argv[i], "-l") == 0)
|| (strcmp (argv[i], "--license") == 0))
{
weechat_display_copyright ();
string_iconv_fprintf (stdout, "\n");
string_iconv_fprintf (stdout, "%s%s", WEECHAT_LICENSE_TEXT);
weechat_shutdown (EXIT_SUCCESS, 0);
}
else if (strcmp (argv[i], "--no-dlclose") == 0)
{
/*
* Valgrind works better when dlclose() is not done after plugins
* are unloaded, it can display stack for plugins,* otherwise
* you'll see "???" in stack for functions of unloaded plugins.
* This option disables the call to dlclose(),
* it must NOT be used for other purposes!
*/
weechat_plugin_no_dlclose = 1;
}
else if (strcmp (argv[i], "--no-gnutls") == 0)
{
/*
* Electric-fence is not working fine when gnutls loads
* certificates and Valgrind reports many memory errors with gnutls.
* This option disables the init/deinit of gnutls,
* it must NOT be used for other purposes!
*/
weechat_no_gnutls = 1;
}
else if (strcmp (argv[i], "--no-gcrypt") == 0)
{
/*
* Valgrind reports many memory errors with gcrypt.
* This option disables the init/deinit of gcrypt,
* it must NOT be used for other purposes!
*/
weechat_no_gcrypt = 1;
}
else if ((strcmp (argv[i], "-p") == 0)
|| (strcmp (argv[i], "--no-plugin") == 0))
{
weechat_auto_load_plugins = 0;
}
else if ((strcmp (argv[i], "-r") == 0)
|| (strcmp (argv[i], "--run-command") == 0))
{
if (i + 1 < argc)
weechat_startup_commands = strdup (argv[++i]);
else
{
string_iconv_fprintf (stderr,
_("Error: missing argument for \"%s\" "
"option\n"),
argv[i]);
weechat_shutdown (EXIT_FAILURE, 0);
}
}
else if (strcmp (argv[i], "--upgrade") == 0)
{
weechat_upgrading = 1;
}
else if ((strcmp (argv[i], "-v") == 0)
|| (strcmp (argv[i], "--version") == 0))
{
string_iconv_fprintf (stdout, version_get_version ());
fprintf (stdout, "\n");
weechat_shutdown (EXIT_SUCCESS, 0);
}
}
}
/*
* Creates WeeChat home directory (by default ~/.weechat).
*
* Any error in this function is fatal: WeeChat can not run without a home
* directory.
*/
void
weechat_create_home_dir ()
{
char *ptr_home, *config_weechat_home = WEECHAT_HOME;
int dir_length;
struct stat statinfo;
if (!weechat_home)
{
if (strlen (config_weechat_home) == 0)
{
string_iconv_fprintf (stderr,
_("Error: WEECHAT_HOME is undefined, check "
"build options\n"));
weechat_shutdown (EXIT_FAILURE, 0);
/* make C static analyzer happy (never executed) */
return;
}
if (config_weechat_home[0] == '~')
{
/* replace leading '~' by $HOME */
ptr_home = getenv ("HOME");
if (!ptr_home)
{
string_iconv_fprintf (stderr,
_("Error: unable to get HOME directory\n"));
weechat_shutdown (EXIT_FAILURE, 0);
/* make C static analyzer happy (never executed) */
return;
}
dir_length = strlen (ptr_home) + strlen (config_weechat_home + 1) + 1;
weechat_home = malloc (dir_length);
if (weechat_home)
{
snprintf (weechat_home, dir_length,
"%s%s", ptr_home, config_weechat_home + 1);
}
}
else
{
weechat_home = strdup (config_weechat_home);
}
if (!weechat_home)
{
string_iconv_fprintf (stderr,
_("Error: not enough memory for home "
"directory\n"));
weechat_shutdown (EXIT_FAILURE, 0);
/* make C static analyzer happy (never executed) */
return;
}
}
/* if home already exists, it has to be a directory */
if (stat (weechat_home, &statinfo) == 0)
{
if (!S_ISDIR (statinfo.st_mode))
{
string_iconv_fprintf (stderr,
_("Error: home (%s) is not a directory\n"),
weechat_home);
weechat_shutdown (EXIT_FAILURE, 0);
}
}
/* create home directory; error is fatal */
if (!util_mkdir (weechat_home, 0755))
{
string_iconv_fprintf (stderr,
_("Error: cannot create directory \"%s\"\n"),
weechat_home);
weechat_shutdown (EXIT_FAILURE, 0);
}
}
/*
* Displays WeeChat welcome message.
*/
void
weechat_welcome_message ()
{
if (CONFIG_BOOLEAN(config_startup_display_logo))
{
gui_chat_printf (NULL,
"%s ___ __ ______________ _____ \n"
"%s __ | / /___________ ____/__ /_______ __ /_\n"
"%s __ | /| / /_ _ \\ _ \\ / __ __ \\ __ `/ __/\n"
"%s __ |/ |/ / / __/ __/ /___ _ / / / /_/ // /_ \n"
"%s ____/|__/ \\___/\\___/\\____/ /_/ /_/\\__,_/ \\__/ ",
GUI_COLOR(GUI_COLOR_CHAT_NICK),
GUI_COLOR(GUI_COLOR_CHAT_NICK),
GUI_COLOR(GUI_COLOR_CHAT_NICK),
GUI_COLOR(GUI_COLOR_CHAT_NICK),
GUI_COLOR(GUI_COLOR_CHAT_NICK));
}
if (CONFIG_BOOLEAN(config_startup_display_version))
{
command_version_display (NULL, 0, 0, 0);
}
if (CONFIG_BOOLEAN(config_startup_display_logo) ||
CONFIG_BOOLEAN(config_startup_display_version))
{
gui_chat_printf (NULL,
"- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
}
}
/*
* Shutdowns WeeChat.
*/
void
weechat_shutdown (int return_code, int crash)
{
if (weechat_argv0)
free (weechat_argv0);
if (weechat_home)
free (weechat_home);
log_close ();
if (weechat_local_charset)
free (weechat_local_charset);
network_end ();
if (crash)
abort();
else
exit (return_code);
}
/*
* Entry point for WeeChat.
*/
int
main (int argc, char *argv[])
{
weechat_first_start_time = time (NULL); /* initialize start time */
gettimeofday (&weechat_current_start_timeval, NULL);
setlocale (LC_ALL, ""); /* initialize gettext */
#ifdef ENABLE_NLS
bindtextdomain (PACKAGE, LOCALEDIR);
bind_textdomain_codeset (PACKAGE, "UTF-8");
textdomain (PACKAGE);
#endif
#ifdef HAVE_LANGINFO_CODESET
weechat_local_charset = strdup (nl_langinfo (CODESET));
#else
weechat_local_charset = strdup ("");
#endif
utf8_init ();
util_catch_signal (SIGINT, SIG_IGN); /* ignore SIGINT signal */
util_catch_signal (SIGQUIT, SIG_IGN); /* ignore SIGQUIT signal */
util_catch_signal (SIGPIPE, SIG_IGN); /* ignore SIGPIPE signal */
util_catch_signal (SIGSEGV,
&debug_sigsegv); /* crash dump for SIGSEGV signal */
hdata_init (); /* initialize hdata */
hook_init (); /* initialize hooks */
debug_init (); /* hook signals for debug */
gui_main_pre_init (&argc, &argv); /* pre-initialize interface */
command_init (); /* initialize WeeChat commands */
completion_init (); /* add core completion hooks */
gui_key_init (); /* init keys */
network_init_gcrypt (); /* init gcrypt */
if (!secure_init ()) /* init secured data options (sec.*)*/
exit (EXIT_FAILURE);
if (!config_weechat_init ()) /* init WeeChat options (weechat.*) */
exit (EXIT_FAILURE);
weechat_parse_args (argc, argv); /* parse command line args */
weechat_create_home_dir (); /* create WeeChat home directory */
log_init (); /* init log file */
if (secure_read () < 0) /* read secured data options */
exit (EXIT_FAILURE);
if (config_weechat_read () < 0) /* read WeeChat options */
exit (EXIT_FAILURE);
network_init_gnutls (); /* init GnuTLS */
gui_main_init (); /* init WeeChat interface */
if (weechat_upgrading)
{
upgrade_weechat_load (); /* upgrade with session file */
weechat_upgrade_count++; /* increase /upgrade count */
}
weechat_welcome_message (); /* display WeeChat welcome message */
gui_chat_print_lines_waiting_buffer (); /* print lines waiting for buf. */
command_startup (0); /* command executed before plugins */
plugin_init (weechat_auto_load_plugins, /* init plugin interface(s) */
argc, argv);
command_startup (1); /* commands executed after plugins */
if (!weechat_upgrading)
gui_layout_window_apply (gui_layout_current, -1);
if (weechat_upgrading)
upgrade_weechat_end (); /* remove .upgrade files + signal */
gui_main_loop (); /* WeeChat main loop */
gui_layout_save_on_exit (); /* save layout */
plugin_end (); /* end plugin interface(s) */
if (CONFIG_BOOLEAN(config_look_save_config_on_exit))
(void) config_weechat_write (); /* save WeeChat config file */
(void) secure_write (); /* save secured data */
gui_main_end (1); /* shut down WeeChat GUI */
proxy_free_all (); /* free all proxies */
config_weechat_free (); /* free WeeChat options */
secure_free (); /* free secured data options */
config_file_free_all (); /* free all configuration files */
gui_key_end (); /* remove all keys */
unhook_all (); /* remove all hooks */
hdata_end (); /* end hdata */
eval_end (); /* end eval */
string_end (); /* end string */
weechat_shutdown (EXIT_SUCCESS, 0); /* quit WeeChat (oh no, why?) */
return EXIT_SUCCESS; /* make C compiler happy */
}
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