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 <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <signal.h>
  25 #include <string.h>
  26 #include <ncurses.h>
  27 #include <glib.h>
  28
  29 #include "config.h"
  30 #include "ncmpc.h"
  31 #include "mpdclient.h"
  32 #include "support.h"
  33 #include "options.h"
  34 #include "conf.h"
  35 #include "command.h"
  36 #include "src_lyrics.h"
  37 #include "screen.h"
  38 #include "screen_utils.h"
  39 #include "strfsong.h"
  40
  41 #define BUFSIZE 1024
  42
  43 static mpdclient_t   *mpd = NULL;
  44 static gboolean connected = FALSE;
  45 static GTimer      *timer = NULL;
  46
  47 static gchar *
  48 error_msg(gchar *msg)
  49 {
  50   gchar *p;
  51
  52   if( (p=strchr(msg, '}' )) == NULL )
  53     return msg;
  54   while( p && *p && (*p=='}' || *p==' ') )
  55     p++;
  56
  57   return p;
  58 }
  59
  60 static void
  61 error_callback(mpdclient_t *c, gint error, gchar *msg)
  62 {
  63         gint code = GET_ACK_ERROR_CODE(error);
  64
  65         error = error & 0xFF;
  66         D("Error [%d:%d]> \"%s\"\n", error, code, msg);
  67         switch (error) {
  68         case MPD_ERROR_CONNPORT:
  69         case MPD_ERROR_NORESPONSE:
  70                 break;
  71         case MPD_ERROR_ACK:
  72                 screen_status_printf("%s", error_msg(msg));
  73                 screen_bell();
  74                 break;
  75         default:
  76                 screen_status_printf("%s", msg);
  77                 screen_bell();
  78                 doupdate();
  79                 connected = FALSE;
  80         }
  81 }
  82
  83 static void
  84 update_xterm_title(void)
  85 {
  86   static char title[BUFSIZE];
  87   char tmp[BUFSIZE];
  88   mpd_Status *status = NULL;
  89   mpd_Song *song = NULL;
  90
  91   if( mpd )
  92     {
  93       status = mpd->status;
  94       song = mpd->song;
  95     }
  96
  97   if(options.xterm_title_format && status && song && IS_PLAYING(status->state))
  98     {
  99       strfsong(tmp, BUFSIZE, options.xterm_title_format, song);
 100     }
 101   else
 102     g_strlcpy(tmp, PACKAGE " version " VERSION, BUFSIZE);
 103
 104   if( strncmp(title,tmp,BUFSIZE) )
 105     {
 106       g_strlcpy(title, tmp, BUFSIZE);
 107       set_xterm_title("%s", title);
 108     }
 109 }
 110
 111 void
 112 exit_and_cleanup(void)
 113 {
 114   screen_exit();
 115   set_xterm_title("");
 116   printf("\n");
 117   if( mpd )
 118     {
 119       mpdclient_disconnect(mpd);
 120       mpd = mpdclient_free(mpd);
 121     }
 122   g_free(options.host);
 123   g_free(options.password);
 124   g_free(options.list_format);
 125   g_free(options.status_format);
 126   g_free(options.scroll_sep);
 127   if( timer )
 128     g_timer_destroy(timer);
 129 }
 130
 131 void
 132 catch_sigint( int sig )
 133 {
 134         printf("\n%s\n", _("Exiting..."));
 135         exit(EXIT_SUCCESS);
 136 }
 137
 138 void
 139 catch_sigcont( int sig )
 140 {
 141         D("catch_sigcont()\n");
 142 #ifdef ENABLE_RAW_MODE
 143         reset_prog_mode(); /* restore tty modes */
 144         refresh();
 145 #endif
 146         screen_resize();
 147 }
 148
 149 void
 150 sigstop(void)
 151 {
 152   def_prog_mode();  /* save the tty modes */
 153   endwin();         /* end curses mode temporarily */
 154   kill(0, SIGSTOP); /* issue SIGSTOP */
 155 }
 156
 157 #ifdef DEBUG
 158 void
 159 D(char *format, ...)
 160 {
 161   if( options.debug )
 162     {
 163       gchar *msg;
 164       va_list ap;
 165
 166       va_start(ap,format);
 167       msg = g_strdup_vprintf(format,ap);
 168       va_end(ap);
 169       fprintf(stderr, "%s", msg);
 170       g_free(msg);
 171     }
 172 }
 173 #endif
 174
 175 int
 176 main(int argc, const char *argv[])
 177 {
 178         options_t *options;
 179         struct sigaction act;
 180         const char *charset = NULL;
 181         gboolean key_error;
 182
 183 #ifdef HAVE_LOCALE_H
 184         /* time and date formatting */
 185         setlocale(LC_TIME,"");
 186         /* care about sorting order etc */
 187         setlocale(LC_COLLATE,"");
 188         /* charset */
 189         setlocale(LC_CTYPE,"");
 190         /* initialize charset conversions */
 191         charset_init(g_get_charset(&charset));
 192         D("charset: %s\n", charset);
 193 #endif
 194
 195         /* initialize i18n support */
 196 #ifdef ENABLE_NLS
 197         setlocale(LC_MESSAGES, "");
 198         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
 199         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
 200         textdomain(GETTEXT_PACKAGE);
 201 #endif
 202
 203         /* initialize options */
 204         options = options_init();
 205
 206         /* parse command line options - 1 pass get configuration files */
 207         options_parse(argc, argv);
 208
 209         /* read configuration */
 210         read_configuration(options);
 211
 212         /* check key bindings */
 213         key_error = check_key_bindings(NULL, NULL, 0);
 214
 215         /* parse command line options - 2 pass */
 216         options_parse(argc, argv);
 217
 218         /* setup signal behavior - SIGINT */
 219         sigemptyset( &act.sa_mask );
 220         act.sa_flags    = 0;
 221         act.sa_handler = catch_sigint;
 222         if( sigaction(SIGINT, &act, NULL)<0 ) {
 223                 perror("signal");
 224                 exit(EXIT_FAILURE);
 225         }
 226
 227         /* setup signal behavior - SIGTERM */
 228         sigemptyset( &act.sa_mask );
 229         act.sa_flags    = 0;
 230         act.sa_handler = catch_sigint;
 231         if( sigaction(SIGTERM, &act, NULL)<0 ) {
 232                 perror("sigaction()");
 233                 exit(EXIT_FAILURE);
 234         }
 235
 236         /* setup signal behavior - SIGCONT */
 237         sigemptyset( &act.sa_mask );
 238         act.sa_flags    = 0;
 239         act.sa_handler = catch_sigcont;
 240         if( sigaction(SIGCONT, &act, NULL)<0 ) {
 241                 perror("sigaction(SIGCONT)");
 242                 exit(EXIT_FAILURE);
 243         }
 244
 245         /* setup signal behaviour - SIGHUP*/
 246         sigemptyset( &act.sa_mask );
 247         act.sa_flags    = 0;
 248         act.sa_handler = catch_sigint;
 249         if( sigaction(SIGHUP, &act, NULL)<0 ) {
 250                 perror("sigaction(SIGHUP)");
 251                 exit(EXIT_FAILURE);
 252         }
 253
 254         /* install exit function */
 255         atexit(exit_and_cleanup);
 256
 257         ncurses_init();
 258
 259         src_lyr_init ();
 260
 261         /* connect to our music player daemon */
 262         mpd = mpdclient_new();
 263
 264         if (mpdclient_connect(mpd,
 265                               options->host,
 266                               options->port,
 267                               10.0,
 268                               options->password))
 269                 exit(EXIT_FAILURE);
 270
 271         /* if no password is used, but the mpd wants one, the connection
 272            might be established but no status information is avaiable */
 273         mpdclient_update(mpd);
 274         if (!mpd->status)
 275                 screen_auth(mpd);
 276
 277         if (!mpd->status)
 278                 exit(EXIT_FAILURE);
 279
 280         connected = TRUE;
 281         D("Connected to MPD version %d.%d.%d\n",
 282           mpd->connection->version[0],
 283           mpd->connection->version[1],
 284           mpd->connection->version[2]);
 285
 286         /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
 287         if( MPD_VERSION_LT(mpd, 0,11,0) ) {
 288                 fprintf(stderr,
 289                         _("Error: MPD version %d.%d.%d is to old (0.11.0 needed).\n"),
 290                         mpd->connection->version[0],
 291                         mpd->connection->version[1],
 292                         mpd->connection->version[2]);
 293                 exit(EXIT_FAILURE);
 294         }
 295
 296         /* initialize curses */
 297         screen_init(mpd);
 298         /* install error callback function */
 299         mpdclient_install_error_callback(mpd, error_callback);
 300
 301         /* initialize timer */
 302         timer = g_timer_new();
 303
 304         connected = TRUE;
 305         while (connected || options->reconnect) {
 306                 static gdouble t = G_MAXDOUBLE;
 307
 308                 if( key_error ) {
 309                         char buf[BUFSIZE];
 310
 311                         key_error=check_key_bindings(NULL, buf, BUFSIZE);
 312                         screen_status_printf("%s", buf);
 313                 }
 314
 315                 if( connected && (t>=MPD_UPDATE_TIME || mpd->need_update) ) {
 316                         mpdclient_update(mpd);
 317                         g_timer_start(timer);
 318                 }
 319
 320                 if( connected ) {
 321                         command_t cmd;
 322
 323                         screen_update(mpd);
 324                         if( (cmd=get_keyboard_command()) != CMD_NONE )
 325                                 {
 326                                         screen_cmd(mpd, cmd);
 327                                         if( cmd==CMD_VOLUME_UP || cmd==CMD_VOLUME_DOWN)
 328                                                 /* make shure we dont update the volume yet */
 329                                                 g_timer_start(timer);
 330                                 }
 331                         else
 332                                 screen_idle(mpd);
 333                 } else if (options->reconnect) {
 334                         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
 335                                              options->host, get_key_names(CMD_QUIT,0) );
 336
 337                         if( get_keyboard_command_with_timeout(MPD_RECONNECT_TIME)==CMD_QUIT)
 338                                 exit(EXIT_SUCCESS);
 339
 340                         if (mpdclient_connect(mpd,
 341                                               options->host, options->port,
 342                                               1.5,
 343                                               options->password) == 0) {
 344                                 screen_status_printf(_("Connected to %s!"), options->host);
 345                                 connected = TRUE;
 346                         }
 347
 348                         doupdate();
 349                 }
 350
 351                 if (options->enable_xterm_title)
 352                         update_xterm_title();
 353
 354                 t = g_timer_elapsed(timer, NULL);
 355         }
 356         exit(EXIT_FAILURE);
 357 }
 358