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 const gchar *
  48 error_msg(const 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, const 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 static 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 static void
 132 catch_sigint( int sig )
 133 {
 134         printf("\n%s\n", _("Exiting..."));
 135         exit(EXIT_SUCCESS);
 136 }
 137
 138
 139 static void
 140 catch_sigcont( int sig )
 141 {
 142         D("catch_sigcont()\n");
 143 #ifdef ENABLE_RAW_MODE
 144         reset_prog_mode(); /* restore tty modes */
 145         refresh();
 146 #endif
 147         screen_resize();
 148 }
 149
 150 void
 151 sigstop(void)
 152 {
 153   def_prog_mode();  /* save the tty modes */
 154   endwin();         /* end curses mode temporarily */
 155   kill(0, SIGSTOP); /* issue SIGSTOP */
 156 }
 157
 158 #ifndef NDEBUG
 159 void
 160 D(const char *format, ...)
 161 {
 162   if( options.debug )
 163     {
 164       gchar *msg;
 165       va_list ap;
 166
 167       va_start(ap,format);
 168       msg = g_strdup_vprintf(format,ap);
 169       va_end(ap);
 170       fprintf(stderr, "%s", msg);
 171       g_free(msg);
 172     }
 173 }
 174 #endif
 175
 176 int
 177 main(int argc, const char *argv[])
 178 {
 179         options_t *options;
 180         struct sigaction act;
 181         const char *charset = NULL;
 182         gboolean key_error;
 183
 184 #ifdef HAVE_LOCALE_H
 185         /* time and date formatting */
 186         setlocale(LC_TIME,"");
 187         /* care about sorting order etc */
 188         setlocale(LC_COLLATE,"");
 189         /* charset */
 190         setlocale(LC_CTYPE,"");
 191         /* initialize charset conversions */
 192         charset_init(g_get_charset(&charset));
 193         D("charset: %s\n", charset);
 194 #endif
 195
 196         /* initialize i18n support */
 197 #ifdef ENABLE_NLS
 198         setlocale(LC_MESSAGES, "");
 199         bindtextdomain(GETTEXT_PACKAGE, LOCALE_DIR);
 200         bind_textdomain_codeset(GETTEXT_PACKAGE, charset);
 201         textdomain(GETTEXT_PACKAGE);
 202 #endif
 203
 204         /* initialize options */
 205         options = options_init();
 206
 207         /* parse command line options - 1 pass get configuration files */
 208         options_parse(argc, argv);
 209
 210         /* read configuration */
 211         read_configuration(options);
 212
 213         /* check key bindings */
 214         key_error = check_key_bindings(NULL, NULL, 0);
 215
 216         /* parse command line options - 2 pass */
 217         options_parse(argc, argv);
 218
 219         /* setup signal behavior - SIGINT */
 220         sigemptyset( &act.sa_mask );
 221         act.sa_flags    = 0;
 222         act.sa_handler = catch_sigint;
 223         if( sigaction(SIGINT, &act, NULL)<0 ) {
 224                 perror("signal");
 225                 exit(EXIT_FAILURE);
 226         }
 227
 228         /* setup signal behavior - SIGTERM */
 229         sigemptyset( &act.sa_mask );
 230         act.sa_flags    = 0;
 231         act.sa_handler = catch_sigint;
 232         if( sigaction(SIGTERM, &act, NULL)<0 ) {
 233                 perror("sigaction()");
 234                 exit(EXIT_FAILURE);
 235         }
 236
 237         /* setup signal behavior - SIGCONT */
 238         sigemptyset( &act.sa_mask );
 239         act.sa_flags    = 0;
 240         act.sa_handler = catch_sigcont;
 241         if( sigaction(SIGCONT, &act, NULL)<0 ) {
 242                 perror("sigaction(SIGCONT)");
 243                 exit(EXIT_FAILURE);
 244         }
 245
 246         /* setup signal behaviour - SIGHUP*/
 247         sigemptyset( &act.sa_mask );
 248         act.sa_flags    = 0;
 249         act.sa_handler = catch_sigint;
 250         if( sigaction(SIGHUP, &act, NULL)<0 ) {
 251                 perror("sigaction(SIGHUP)");
 252                 exit(EXIT_FAILURE);
 253         }
 254
 255         /* install exit function */
 256         atexit(exit_and_cleanup);
 257
 258         ncurses_init();
 259
 260         src_lyr_init ();
 261
 262         /* connect to our music player daemon */
 263         mpd = mpdclient_new();
 264
 265         if (mpdclient_connect(mpd,
 266                               options->host,
 267                               options->port,
 268                               10.0,
 269                               options->password))
 270                 exit(EXIT_FAILURE);
 271
 272         /* if no password is used, but the mpd wants one, the connection
 273            might be established but no status information is avaiable */
 274         mpdclient_update(mpd);
 275         if (!mpd->status)
 276                 screen_auth(mpd);
 277
 278         if (!mpd->status)
 279                 exit(EXIT_FAILURE);
 280
 281         connected = TRUE;
 282         D("Connected to MPD version %d.%d.%d\n",
 283           mpd->connection->version[0],
 284           mpd->connection->version[1],
 285           mpd->connection->version[2]);
 286
 287         /* quit if mpd is pre 0.11.0 - song id not supported by mpd */
 288         if( MPD_VERSION_LT(mpd, 0,11,0) ) {
 289                 fprintf(stderr,
 290                         _("Error: MPD version %d.%d.%d is to old (0.11.0 needed).\n"),
 291                         mpd->connection->version[0],
 292                         mpd->connection->version[1],
 293                         mpd->connection->version[2]);
 294                 exit(EXIT_FAILURE);
 295         }
 296
 297         /* initialize curses */
 298         screen_init(mpd);
 299         /* install error callback function */
 300         mpdclient_install_error_callback(mpd, error_callback);
 301
 302         /* initialize timer */
 303         timer = g_timer_new();
 304
 305         connected = TRUE;
 306         while (connected || options->reconnect) {
 307                 static gdouble t = G_MAXDOUBLE;
 308
 309                 if( key_error ) {
 310                         char buf[BUFSIZE];
 311
 312                         key_error=check_key_bindings(NULL, buf, BUFSIZE);
 313                         screen_status_printf("%s", buf);
 314                 }
 315
 316                 if( connected && (t>=MPD_UPDATE_TIME || mpd->need_update) ) {
 317                         mpdclient_update(mpd);
 318                         g_timer_start(timer);
 319                 }
 320
 321                 if( connected ) {
 322                         command_t cmd;
 323
 324                         screen_update(mpd);
 325                         if( (cmd=get_keyboard_command()) != CMD_NONE )
 326                                 {
 327                                         screen_cmd(mpd, cmd);
 328                                         if( cmd==CMD_VOLUME_UP || cmd==CMD_VOLUME_DOWN)
 329                                                 /* make shure we dont update the volume yet */
 330                                                 g_timer_start(timer);
 331                                 }
 332                         else
 333                                 screen_idle(mpd);
 334                 } else if (options->reconnect) {
 335                         screen_status_printf(_("Connecting to %s...  [Press %s to abort]"),
 336                                              options->host, get_key_names(CMD_QUIT,0) );
 337
 338                         if( get_keyboard_command_with_timeout(MPD_RECONNECT_TIME)==CMD_QUIT)
 339                                 exit(EXIT_SUCCESS);
 340
 341                         if (mpdclient_connect(mpd,
 342                                               options->host, options->port,
 343                                               1.5,
 344                                               options->password) == 0) {
 345                                 screen_status_printf(_("Connected to %s!"), options->host);
 346                                 connected = TRUE;
 347                         }
 348
 349                         doupdate();
 350                 }
 351
 352                 if (options->enable_xterm_title)
 353                         update_xterm_title();
 354
 355                 t = g_timer_elapsed(timer, NULL);
 356         }
 357         exit(EXIT_FAILURE);
 358 }
 359