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