src/screen_file.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19 #include "config.h"
  20 #include "i18n.h"
  21 #include "options.h"
  22 #include "charset.h"
  23 #include "mpdclient.h"
  24 #include "command.h"
  25 #include "screen.h"
  26 #include "screen_utils.h"
  27 #include "screen_browser.h"
  28 #include "screen_play.h"
  29
  30 #include <ctype.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <glib.h>
  34
  35 static struct screen_browser browser;
  36
  37 static void
  38 browse_paint(void);
  39
  40 static void
  41 file_repaint(void)
  42 {
  43         browse_paint();
  44         wrefresh(browser.lw->w);
  45 }
  46
  47 static void
  48 file_repaint_if_active(void)
  49 {
  50         if (screen_is_visible(&screen_browse))
  51                 file_repaint();
  52 }
  53
  54 /* the db has changed -> update the filelist */
  55 static void
  56 file_changed_callback(mpdclient_t *c, G_GNUC_UNUSED int event,
  57                       G_GNUC_UNUSED gpointer data)
  58 {
  59         browser.filelist = mpdclient_filelist_update(c, browser.filelist);
  60 #ifndef NCMPC_MINI
  61         sync_highlights(c, browser.filelist);
  62 #endif
  63         list_window_check_selected(browser.lw, filelist_length(browser.filelist));
  64
  65         file_repaint_if_active();
  66 }
  67
  68 #ifndef NCMPC_MINI
  69 /* the playlist has been updated -> fix highlights */
  70 static void
  71 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  72 {
  73         browser_playlist_changed(&browser, c, event, data);
  74
  75         file_repaint_if_active();
  76 }
  77 #endif
  78
  79 static bool
  80 file_change_directory(mpdclient_t *c, filelist_entry_t *entry,
  81                       const char *new_path)
  82 {
  83         mpd_InfoEntity *entity = NULL;
  84         gchar *path = NULL;
  85         char *old_path;
  86         int idx;
  87
  88         if( entry!=NULL )
  89                 entity = entry->entity;
  90         else if( new_path==NULL )
  91                 return false;
  92
  93         if( entity==NULL ) {
  94                 if( entry || 0==strcmp(new_path, "..") ) {
  95                         /* return to parent */
  96                         char *parent = g_path_get_dirname(browser.filelist->path);
  97                         if( strcmp(parent, ".") == 0 )
  98                                 parent[0] = '\0';
  99                         path = g_strdup(parent);
 100                         g_free(parent);
 101                 } else {
 102                         /* entry==NULL, then new_path ("" is root) */
 103                         path = g_strdup(new_path);
 104                 }
 105         } else if( entity->type==MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 106                 /* enter sub */
 107                 mpd_Directory *dir = entity->info.directory;
 108                 path = g_strdup(dir->path);
 109         } else
 110                 return false;
 111
 112         if (browser.filelist != NULL) {
 113                 old_path = g_strdup(browser.filelist->path);
 114                 filelist_free(browser.filelist);
 115         } else
 116                 old_path = NULL;
 117
 118         browser.filelist = mpdclient_filelist_get(c, path);
 119 #ifndef NCMPC_MINI
 120         sync_highlights(c, browser.filelist);
 121 #endif
 122
 123         idx = old_path != NULL
 124                 ? filelist_find_directory(browser.filelist, old_path)
 125                 : -1;
 126         g_free(old_path);
 127
 128         list_window_reset(browser.lw);
 129         if (idx >= 0) {
 130                 list_window_set_selected(browser.lw, idx);
 131                 list_window_center(browser.lw,
 132                                    filelist_length(browser.filelist), idx);
 133         }
 134
 135         g_free(path);
 136         return true;
 137 }
 138
 139 static bool
 140 file_handle_enter(struct mpdclient *c)
 141 {
 142         struct filelist_entry *entry = browser_get_selected_entry(&browser);
 143         struct mpd_InfoEntity *entity;
 144
 145         if (entry == NULL)
 146                 return false;
 147
 148         entity = entry->entity;
 149         if (entity == NULL || entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY)
 150                 return file_change_directory(c, entry, NULL);
 151         else
 152                 return false;
 153 }
 154
 155 static int
 156 handle_save(mpdclient_t *c)
 157 {
 158         filelist_entry_t *entry;
 159         char *defaultname = NULL;
 160         int ret;
 161         unsigned selected;
 162
 163         if (browser.lw->selected >= filelist_length(browser.filelist))
 164                 return -1;
 165
 166         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 167         {
 168                 entry = filelist_get(browser.filelist, selected);
 169                 if( entry && entry->entity ) {
 170                         mpd_InfoEntity *entity = entry->entity;
 171                         if( entity->type==MPD_INFO_ENTITY_TYPE_PLAYLISTFILE ) {
 172                                 mpd_PlaylistFile *plf = entity->info.playlistFile;
 173                                 defaultname = plf->path;
 174                         }
 175                 }
 176         }
 177
 178         if(defaultname)
 179                 defaultname = utf8_to_locale(defaultname);
 180         ret = playlist_save(c, NULL, defaultname);
 181         g_free(defaultname);
 182
 183         return ret;
 184 }
 185
 186 static int
 187 handle_delete(mpdclient_t *c)
 188 {
 189         filelist_entry_t *entry;
 190         mpd_InfoEntity *entity;
 191         mpd_PlaylistFile *plf;
 192         char *str, *buf;
 193         int key;
 194         unsigned selected;
 195
 196         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 197         {
 198                 if (selected >= filelist_length(browser.filelist))
 199                         return -1;
 200
 201                 entry = filelist_get(browser.filelist, selected);
 202                 if( entry==NULL || entry->entity==NULL )
 203                         continue;
 204
 205                 entity = entry->entity;
 206
 207                 if( entity->type!=MPD_INFO_ENTITY_TYPE_PLAYLISTFILE ) {
 208                         /* translators: the "delete" command is only possible
 209                            for playlists; the user attempted to delete a song
 210                            or a directory or something else */
 211                         screen_status_printf(_("Deleting this item is not possible"));
 212                         screen_bell();
 213                         continue;
 214                 }
 215
 216                 plf = entity->info.playlistFile;
 217                 str = utf8_to_locale(g_basename(plf->path));
 218                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 219                 g_free(str);
 220                 key = tolower(screen_getch(screen.status_window.w, buf));
 221                 g_free(buf);
 222                 if( key != YES[0] ) {
 223                         /* translators: a dialog was aborted by the user */
 224                         screen_status_printf(_("Aborted"));
 225                         return 0;
 226                 }
 227
 228                 if( mpdclient_cmd_delete_playlist(c, plf->path) )
 229                         continue;
 230
 231                 /* translators: MPD deleted the playlist, as requested by the
 232                    user */
 233                 screen_status_printf(_("Playlist deleted"));
 234         }
 235         return 0;
 236 }
 237
 238 static void
 239 browse_init(WINDOW *w, int cols, int rows)
 240 {
 241         browser.lw = list_window_init(w, cols, rows);
 242 }
 243
 244 static void
 245 browse_resize(int cols, int rows)
 246 {
 247         browser.lw->cols = cols;
 248         browser.lw->rows = rows;
 249 }
 250
 251 static void
 252 browse_exit(void)
 253 {
 254         if (browser.filelist)
 255                 filelist_free(browser.filelist);
 256         list_window_free(browser.lw);
 257 }
 258
 259 static void
 260 browse_open(G_GNUC_UNUSED mpdclient_t *c)
 261 {
 262         if (browser.filelist == NULL) {
 263                 browser.filelist = mpdclient_filelist_get(c, "");
 264 #ifndef NCMPC_MINI
 265                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 266 #endif
 267                 mpdclient_install_browse_callback(c, file_changed_callback);
 268         }
 269 }
 270
 271 static const char *
 272 browse_title(char *str, size_t size)
 273 {
 274         const char *path = NULL, *prev = NULL, *slash = browser.filelist->path;
 275         char *path_locale;
 276
 277         /* determine the last 2 parts of the path */
 278         while ((slash = strchr(slash, '/')) != NULL) {
 279                 path = prev;
 280                 prev = ++slash;
 281         }
 282
 283         if (path == NULL)
 284                 /* fall back to full path */
 285                 path = browser.filelist->path;
 286
 287         path_locale = utf8_to_locale(path);
 288         g_snprintf(str, size, "%s: %s",
 289                    /* translators: caption of the browser screen */
 290                    _("Browse"), path_locale);
 291         g_free(path_locale);
 292         return str;
 293 }
 294
 295 static void
 296 browse_paint(void)
 297 {
 298         list_window_paint(browser.lw, browser_lw_callback, browser.filelist);
 299 }
 300
 301 static bool
 302 browse_cmd(mpdclient_t *c, command_t cmd)
 303 {
 304         switch(cmd) {
 305         case CMD_PLAY:
 306                 if (file_handle_enter(c))
 307                         return true;
 308                 break;
 309
 310         case CMD_GO_ROOT_DIRECTORY:
 311                 file_change_directory(c, NULL, "");
 312                 file_repaint();
 313                 return true;
 314         case CMD_GO_PARENT_DIRECTORY:
 315                 file_change_directory(c, NULL, "..");
 316                 file_repaint();
 317                 return true;
 318
 319         case CMD_LOCATE:
 320                 /* don't let browser_cmd() evaluate the locate command
 321                    - it's a no-op, and by the way, leads to a
 322                    segmentation fault in the current implementation */
 323                 return false;
 324
 325         case CMD_DELETE:
 326                 handle_delete(c);
 327                 file_repaint();
 328                 break;
 329         case CMD_SAVE_PLAYLIST:
 330                 handle_save(c);
 331                 break;
 332         case CMD_SCREEN_UPDATE:
 333                 browser.filelist = mpdclient_filelist_update(c, browser.filelist);
 334 #ifndef NCMPC_MINI
 335                 sync_highlights(c, browser.filelist);
 336 #endif
 337                 list_window_check_selected(browser.lw,
 338                                            filelist_length(browser.filelist));
 339                 file_repaint();
 340                 return false;
 341
 342         case CMD_DB_UPDATE:
 343                 if (c->status == NULL)
 344                         return true;
 345
 346                 if (!c->status->updatingDb) {
 347                         if (mpdclient_cmd_db_update(c, browser.filelist->path) == 0) {
 348                                 if (strcmp(browser.filelist->path, "")) {
 349                                         char *path_locale =
 350                                                 utf8_to_locale(browser.filelist->path);
 351                                         screen_status_printf(_("Database update of %s started"),
 352                                                              path_locale);
 353                                         g_free(path_locale);
 354                                 } else
 355                                         screen_status_printf(_("Database update started"));
 356                         }
 357                 } else
 358                         screen_status_printf(_("Database update running..."));
 359                 return true;
 360
 361         default:
 362                 break;
 363         }
 364
 365         if (browser_cmd(&browser, c, cmd)) {
 366                 if (screen_is_visible(&screen_browse))
 367                         file_repaint();
 368                 return true;
 369         }
 370
 371         return false;
 372 }
 373
 374 const struct screen_functions screen_browse = {
 375         .init = browse_init,
 376         .exit = browse_exit,
 377         .open = browse_open,
 378         .resize = browse_resize,
 379         .paint = browse_paint,
 380         .cmd = browse_cmd,
 381         .get_title = browse_title,
 382 };
 383
 384 bool
 385 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 386 {
 387         const char *slash, *parent;
 388         char *allocated = NULL;
 389         bool ret;
 390         int i;
 391
 392         assert(song != NULL);
 393         assert(song->file != NULL);
 394
 395         if (strstr(song->file, "//") != NULL)
 396                 /* an URL? */
 397                 return false;
 398
 399         /* determine the song's parent directory and go there */
 400
 401         slash = strrchr(song->file, '/');
 402         if (slash != NULL)
 403                 parent = allocated = g_strndup(song->file, slash - song->file);
 404         else
 405                 parent = "";
 406
 407         ret = file_change_directory(c, NULL, parent);
 408         g_free(allocated);
 409         if (!ret)
 410                 return false;
 411
 412         /* select the specified song */
 413
 414         i = filelist_find_song(browser.filelist, song);
 415         if (i < 0)
 416                 i = 0;
 417
 418         list_window_set_selected(browser.lw, i);
 419
 420         /* finally, switch to the file screen */
 421         screen_switch(&screen_browse, c);
 422         return true;
 423 }