src/main.c

   1 /*
   2  * $Id$
   3  *
   4  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include "config.h"
  22 #include "ncmpc.h"
  23 #include "mpdclient.h"
  24 #include "support.h"
  25 #include "options.h"
  26 #include "conf.h"
  27 #include "command.h"
  28 #include "lyrics.h"
  29 #include "screen.h"
  30 #include "screen_utils.h"
  31 #include "strfsong.h"
  32 #include "gcc.h"
  33
  34 #include <stdlib.h>
  35 #include <unistd.h>
  36 #include <signal.h>
  37 #include <string.h>
  38
  39 #define BUFSIZE 1024
  40
  41 static mpdclient_t *mpd = NULL;
  42 static gboolean connected = FALSE;
  43 static GTimer *timer = NULL;
  44
  45 static const gchar *
  46 error_msg(const gchar *msg)
  47 {
  48         gchar *p;
  49
  50         if ((p = strchr(msg, '}')) == NULL)
  51                 return msg;
  52
  53         while (p && *p && (*p=='}' || *p==' '))
  54                 p++;
  55
  56         return p;
  57 }
  58
  59 static void
  60 error_callback(mpd_unused mpdclient_t *c, gint error, const gchar *msg)
  61 {
  62         error = error & 0xFF;
  63         D("Error [%d:%d]> \"%s\"\n", error, GET_ACK_ERROR_CODE(error), msg);
  64         switch (error) {
  65         case MPD_ERROR_CONNPORT:
  66         case MPD_ERROR_NORESPONSE:
  67                 break;
  68         case MPD_ERROR_ACK:
  69                 screen_status_printf("%s", error_msg(msg));
  70                 screen_bell();
  71                 break;
  72         default:
  73                 screen_status_printf("%s", msg);
  74                 screen_bell();
  75                 doupdate();
  76                 connected = FALSE;
  77         }
  78 }
  79
  80 static void
  81 update_xterm_title(void)
  82 {
  83         static char title[BUFSIZE];
  84         char tmp[BUFSIZE];
  85         mpd_Status *status = NULL;
  86         mpd_Song *song = NULL;
  87
  88         if (mpd) {
  89                 status = mpd->status;
  90                 song = mpd->song;
  91         }
  92
  93         if (options.xterm_title_format && status && song &&
  94             IS_PLAYING(status->state))
  95                 strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
  96         else
  97                 g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
  98
  99         if (strncmp(title, tmp, BUFSIZE)) {
 100                 g_strlcpy(title, tmp, BUFSIZE);
 101                 set_xterm_title("%s", title);
 102         }
 103 }
 104
 105 static void
 106 exit_and_cleanup(void)
 107 {
 108         screen_exit();
 109         set_xterm_title("");
 110         printf("\n");
 111
 112         if (mpd) {
 113                 mpdclient_disconnect(mpd);
 114                 mpdclient_free(mpd);
 115         }
 116
 117         g_free(options.host);
 118         g_free(options.password);
 119         g_free(options.list_format);
 120         g_free(options.status_format);
 121         g_free(options.scroll_sep);
 122
 123         if (timer)
 124                 g_timer_destroy(timer);
 125 }
 126
 127 static void
 128 catch_sigint(mpd_unused int sig)
 129 {
 130         printf("\n%s\n", _("Exiting..."));
 131         exit(EXIT_SUCCESS);
 132 }
 133
 134
 135 static void
 136 catch_sigcont(mpd_unused int sig)
 137 {
 138         D("catch_sigcont()\n");
 139 #ifdef ENABLE_RAW_MODE
 140         reset_prog_mode(); /* restore tty modes */
 141         refresh();
 142 #endif
 143         screen_resize();
 144 }
 145
 146 void
 147 sigstop(void)
 148 {
 149   def_prog_mode();  /* save the tty modes */
 150   endwin();         /* end curses mode temporarily */
 151   kill(0, SIGSTOP); /* issue SIGSTOP */
 152 }
 153
 154 #ifndef NDEBUG
 155 void
 156 D(const char *format, ...)
 157 {
 158   if( options.debug )
 159     {
 160       gchar *msg;
 161       va_list ap;
 162
 163       va_start(ap,format);
 164       msg = g_strdup_vprintf(format,ap);
 165       va_end(ap);
 166       fprintf(stderr, "%s", msg);
 167       g_free(msg);
 168     }
 169 }
 170 #endif
 171
 172 int
 173 main(int argc, const char *argv[])
 174 {
 175         struct sigaction act;
 176         const char *charset = NULL;
 177         gboolean key_error;
 178
 179 #ifdef HAVE_LOCALE_H
 180         /* time and date formatting */
 181         setlocale(LC_TIME,"");
 182         /* care about sorting order etc */
 183         setlocale(LC_COLLATE,"");
 184         /* charset */
 185         setlocale(LC_CTYPE,"");
 186         /* initialize charset conversions */
 187         charset_init(g_get_charset(&charset));
 188         D("charset: %s\n", charset);
 189 #endif
 190
 191         /* initialize i18n support */
 192 #ifdef ENABLE_NLS
 193         setlocale(LC_MESSAGES, "");
 194         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
 195         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
 196         textdomain(GETTEXT_PACKAGE);
 197 #endif
 198
 199         /* initialize options */
 200         options_init();
 201
 202         /* parse command line options - 1 pass get configuration files */
 203         options_parse(argc, argv);
 204
 205         /* read configuration */
 206         read_configuration(&options);
 207
 208         /* check key bindings */
 209         key_error = check_key_bindings(NULL, NULL, 0);
 210
 211         /* parse command line options - 2 pass */
 212         options_parse(argc, argv);
 213
 214         /* setup signal behavior - SIGINT */
 215         sigemptyset(&act.sa_mask);
 216         act.sa_flags = 0;
 217         act.sa_handler = catch_sigint;
 218         if (sigaction(SIGINT, &act, NULL) < 0) {
 219                 perror("signal");
 220                 exit(EXIT_FAILURE);
 221         }
 222
 223         /* setup signal behavior - SIGTERM */
 224         sigemptyset(&act.sa_mask);
 225         act.sa_flags = 0;
 226         act.sa_handler = catch_sigint;
 227         if (sigaction(SIGTERM, &act, NULL) < 0) {
 228                 perror("sigaction()");
 229                 exit(EXIT_FAILURE);
 230         }
 231
 232         /* setup signal behavior - SIGCONT */
 233         sigemptyset(&act.sa_mask);
 234         act.sa_flags = 0;
 235         act.sa_handler = catch_sigcont;
 236         if (sigaction(SIGCONT, &act, NULL) < 0) {
 237                 perror("sigaction(SIGCONT)");
 238                 exit(EXIT_FAILURE);
 239         }
 240
 241         /* setup signal behaviour - SIGHUP*/
 242         sigemptyset(&act.sa_mask);
 243         act.sa_flags = 0;
 244         act.sa_handler = catch_sigint;
 245         if (sigaction(SIGHUP, &act, NULL) < 0) {
 246                 perror("sigaction(SIGHUP)");
 247                 exit(EXIT_FAILURE);
 248         }
 249
 250         /* install exit function */
 251         atexit(exit_and_cleanup);
 252
 253         ncurses_init();
 254
 255         lyrics_init();
 256
 257         /* connect to our music player daemon */
 258         mpd = mpdclient_new();
 259
 260         if (mpdclient_connect(mpd,
 261                               options.host,
 262                               options.port,
 263                               10.0,
 264                               options.password))
 265                 exit(EXIT_FAILURE);
 266
 267         /* if no password is used, but the mpd wants one, the connection
 268            might be established but no status information is avaiable */
 269         mpdclient_update(mpd);
 270         if (!mpd->status)
 271                 screen_auth(mpd);
 272
 273         if (!mpd->status)
 274                 exit(EXIT_FAILURE);
 275
 276         connected = TRUE;
 277         D("Connected to MPD version %d.%d.%d\n",
 278           mpd->connection->version[0],
 279           mpd->connection->version[1],
 280           mpd->connection->version[2]);
 281
 282         /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
 283         if( MPD_VERSION_LT(mpd, 0,11,0) ) {
 284                 fprintf(stderr,
 285                         _("Error: MPD version %d.%d.%d is to old (0.11.0 needed).\n"),
 286                         mpd->connection->version[0],
 287                         mpd->connection->version[1],
 288                         mpd->connection->version[2]);
 289                 exit(EXIT_FAILURE);
 290         }
 291
 292         /* initialize curses */
 293         screen_init(mpd);
 294         /* install error callback function */
 295         mpdclient_install_error_callback(mpd, error_callback);
 296
 297         /* initialize timer */
 298         timer = g_timer_new();
 299
 300         connected = TRUE;
 301         while (connected || options.reconnect) {
 302                 static gdouble t = G_MAXDOUBLE;
 303
 304                 if (key_error) {
 305                         char buf[BUFSIZE];
 306
 307                         key_error=check_key_bindings(NULL, buf, BUFSIZE);
 308                         screen_status_printf("%s", buf);
 309                 }
 310
 311                 if (connected && (t >= MPD_UPDATE_TIME || mpd->need_update)) {
 312                         mpdclient_update(mpd);
 313                         g_timer_start(timer);
 314                 }
 315
 316                 if (connected) {
 317                         command_t cmd;
 318
 319                         screen_update(mpd);
 320                         if ((cmd=get_keyboard_command()) != CMD_NONE) {
 321                                 screen_cmd(mpd, cmd);
 322                                 if (cmd == CMD_VOLUME_UP || cmd == CMD_VOLUME_DOWN)
 323                                         /* make shure we dont update the volume yet */
 324                                         g_timer_start(timer);
 325                         } else
 326                                 screen_idle(mpd);
 327                 } else if (options.reconnect) {
 328                         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
 329                                              options.host, get_key_names(CMD_QUIT,0) );
 330
 331                         if (get_keyboard_command_with_timeout(MPD_RECONNECT_TIME) == CMD_QUIT)
 332                                 exit(EXIT_SUCCESS);
 333
 334                         if (mpdclient_connect(mpd,
 335                                               options.host, options.port,
 336                                               1.5,
 337                                               options.password) == 0) {
 338                                 screen_status_printf(_("Connected to %s!"), options.host);
 339                                 connected = TRUE;
 340                         }
 341
 342                         doupdate();
 343                 }
 344
 345                 if (options.enable_xterm_title)
 346                         update_xterm_title();
 347
 348                 t = g_timer_elapsed(timer, NULL);
 349         }
 350         exit(EXIT_FAILURE);
 351 }