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
  20 #include "screen_file.h"
  21 #include "screen_browser.h"
  22 #include "screen_interface.h"
  23 #include "screen_message.h"
  24 #include "screen.h"
  25 #include "config.h"
  26 #include "i18n.h"
  27 #include "charset.h"
  28 #include "mpdclient.h"
  29 #include "filelist.h"
  30 #include "screen_utils.h"
  31 #include "screen_play.h"
  32 #include "screen_client.h"
  33
  34 #include <mpd/client.h>
  35
  36 #include <ctype.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <glib.h>
  40
  41 static struct screen_browser browser;
  42 static char *current_path;
  43
  44 static void
  45 screen_file_paint(void);
  46
  47 static void
  48 screen_file_repaint(void)
  49 {
  50         screen_file_paint();
  51         wrefresh(browser.lw->w);
  52 }
  53
  54 static void
  55 screen_file_reload(struct mpdclient *c)
  56 {
  57         struct mpd_connection *connection;
  58
  59         if (browser.filelist != NULL)
  60                 filelist_free(browser.filelist);
  61
  62         browser.filelist = filelist_new();
  63         if (*current_path != 0)
  64                 /* add a dummy entry for ./.. */
  65                 filelist_append(browser.filelist, NULL);
  66
  67         if (!mpdclient_is_connected(c))
  68                 return;
  69
  70         connection = c->connection;
  71
  72         mpd_send_list_meta(connection, current_path);
  73         filelist_recv(browser.filelist, connection);
  74
  75         if (mpd_response_finish(connection))
  76                 filelist_sort_dir_play(browser.filelist,
  77                                        compare_filelist_entry_path);
  78         else
  79                 mpdclient_handle_error(c);
  80 }
  81
  82 /**
  83  * Change to the specified absolute directory.
  84  */
  85 static bool
  86 change_directory(struct mpdclient *c, const char *new_path)
  87 {
  88         g_free(current_path);
  89         current_path = g_strdup(new_path);
  90
  91         screen_file_reload(c);
  92
  93 #ifndef NCMPC_MINI
  94         screen_browser_sync_highlights(browser.filelist, &c->playlist);
  95 #endif
  96
  97         list_window_reset(browser.lw);
  98
  99         return browser.filelist != NULL;
 100 }
 101
 102 /**
 103  * Change to the parent directory of the current directory.
 104  */
 105 static bool
 106 change_to_parent(struct mpdclient *c)
 107 {
 108         char *parent = g_path_get_dirname(current_path);
 109         char *old_path;
 110         int idx;
 111         bool success;
 112
 113         if (strcmp(parent, ".") == 0)
 114                 parent[0] = '\0';
 115
 116         old_path = current_path;
 117         current_path = NULL;
 118
 119         success = change_directory(c, parent);
 120         g_free(parent);
 121
 122         idx = success
 123                 ? filelist_find_directory(browser.filelist, old_path)
 124                 : -1;
 125         g_free(old_path);
 126
 127         if (success && idx >= 0) {
 128                 /* set the cursor on the previous working directory */
 129                 list_window_set_selected(browser.lw, idx);
 130                 list_window_center(browser.lw,
 131                                    filelist_length(browser.filelist), idx);
 132         }
 133
 134         return success;
 135 }
 136
 137 /**
 138  * Change to the directory referred by the specified #filelist_entry
 139  * object.
 140  */
 141 static bool
 142 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 143 {
 144         assert(entry != NULL);
 145
 146         if (entry->entity == NULL)
 147                 return change_to_parent(c);
 148         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 149                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 150         else
 151                 return false;
 152 }
 153
 154 static bool
 155 screen_file_handle_enter(struct mpdclient *c)
 156 {
 157         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 158
 159         if (entry == NULL)
 160                 return false;
 161
 162         return change_to_entry(c, entry);
 163 }
 164
 165 static int
 166 handle_save(struct mpdclient *c)
 167 {
 168         struct filelist_entry *entry;
 169         const char *defaultname = NULL;
 170         char *defaultname_utf8 = NULL;
 171         int ret;
 172         unsigned selected;
 173
 174         if (browser.lw->selected >= filelist_length(browser.filelist))
 175                 return -1;
 176
 177         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 178         {
 179                 entry = filelist_get(browser.filelist, selected);
 180                 if( entry && entry->entity ) {
 181                         struct mpd_entity *entity = entry->entity;
 182                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 183                                 const struct mpd_playlist *playlist =
 184                                         mpd_entity_get_playlist(entity);
 185                                 defaultname = mpd_playlist_get_path(playlist);
 186                         }
 187                 }
 188         }
 189
 190         if(defaultname)
 191                 defaultname_utf8 = utf8_to_locale(defaultname);
 192         ret = playlist_save(c, NULL, defaultname_utf8);
 193         g_free(defaultname_utf8);
 194
 195         return ret;
 196 }
 197
 198 static int
 199 handle_delete(struct mpdclient *c)
 200 {
 201         struct filelist_entry *entry;
 202         struct mpd_entity *entity;
 203         const struct mpd_playlist *playlist;
 204         char *str, *buf;
 205         int key;
 206         unsigned selected;
 207
 208         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 209         {
 210                 if (selected >= filelist_length(browser.filelist))
 211                         return -1;
 212
 213                 entry = filelist_get(browser.filelist, selected);
 214                 if( entry==NULL || entry->entity==NULL )
 215                         continue;
 216
 217                 entity = entry->entity;
 218
 219                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 220                         /* translators: the "delete" command is only possible
 221                            for playlists; the user attempted to delete a song
 222                            or a directory or something else */
 223                         screen_status_printf(_("Deleting this item is not possible"));
 224                         screen_bell();
 225                         continue;
 226                 }
 227
 228                 playlist = mpd_entity_get_playlist(entity);
 229                 str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 230                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 231                 g_free(str);
 232                 key = tolower(screen_getch(buf));
 233                 g_free(buf);
 234                 if( key != YES[0] ) {
 235                         /* translators: a dialog was aborted by the user */
 236                         screen_status_printf(_("Aborted"));
 237                         return 0;
 238                 }
 239
 240                 if (!mpd_run_rm(c->connection, mpd_playlist_get_path(playlist))) {
 241                         mpdclient_handle_error(c);
 242                         break;
 243                 }
 244
 245                 c->events |= MPD_IDLE_STORED_PLAYLIST;
 246
 247                 /* translators: MPD deleted the playlist, as requested by the
 248                    user */
 249                 screen_status_printf(_("Playlist deleted"));
 250         }
 251         return 0;
 252 }
 253
 254 static void
 255 screen_file_init(WINDOW *w, int cols, int rows)
 256 {
 257         current_path = g_strdup("");
 258
 259         browser.lw = list_window_init(w, cols, rows);
 260 }
 261
 262 static void
 263 screen_file_resize(int cols, int rows)
 264 {
 265         browser.lw->cols = cols;
 266         browser.lw->rows = rows;
 267 }
 268
 269 static void
 270 screen_file_exit(void)
 271 {
 272         if (browser.filelist)
 273                 filelist_free(browser.filelist);
 274         list_window_free(browser.lw);
 275
 276         g_free(current_path);
 277 }
 278
 279 static void
 280 screen_file_open(struct mpdclient *c)
 281 {
 282         screen_file_reload(c);
 283 }
 284
 285 static const char *
 286 screen_file_get_title(char *str, size_t size)
 287 {
 288         const char *path = NULL, *prev = NULL, *slash = current_path;
 289         char *path_locale;
 290
 291         /* determine the last 2 parts of the path */
 292         while ((slash = strchr(slash, '/')) != NULL) {
 293                 path = prev;
 294                 prev = ++slash;
 295         }
 296
 297         if (path == NULL)
 298                 /* fall back to full path */
 299                 path = current_path;
 300
 301         path_locale = utf8_to_locale(path);
 302         g_snprintf(str, size, "%s: %s",
 303                    /* translators: caption of the browser screen */
 304                    _("Browse"), path_locale);
 305         g_free(path_locale);
 306         return str;
 307 }
 308
 309 static void
 310 screen_file_paint(void)
 311 {
 312         list_window_paint(browser.lw, browser_lw_callback, browser.filelist);
 313 }
 314
 315 static void
 316 screen_file_update(struct mpdclient *c)
 317 {
 318         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 319                 /* the db has changed -> update the filelist */
 320                 screen_file_reload(c);
 321                 list_window_check_selected(browser.lw,
 322                                            filelist_length(browser.filelist));
 323         }
 324
 325 #ifndef NCMPC_MINI
 326         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST |
 327                          MPD_IDLE_PLAYLIST))
 328                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 329 #endif
 330
 331         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 332 #ifndef NCMPC_MINI
 333                          | MPD_IDLE_PLAYLIST
 334 #endif
 335                          ))
 336                 screen_file_repaint();
 337 }
 338
 339 static bool
 340 screen_file_cmd(struct mpdclient *c, command_t cmd)
 341 {
 342         switch(cmd) {
 343         case CMD_PLAY:
 344                 if (screen_file_handle_enter(c)) {
 345                         screen_file_repaint();
 346                         return true;
 347                 }
 348
 349                 break;
 350
 351         case CMD_GO_ROOT_DIRECTORY:
 352                 change_directory(c, "");
 353                 screen_file_repaint();
 354                 return true;
 355         case CMD_GO_PARENT_DIRECTORY:
 356                 change_to_parent(c);
 357                 screen_file_repaint();
 358                 return true;
 359
 360         case CMD_LOCATE:
 361                 /* don't let browser_cmd() evaluate the locate command
 362                    - it's a no-op, and by the way, leads to a
 363                    segmentation fault in the current implementation */
 364                 return false;
 365
 366         case CMD_SCREEN_UPDATE:
 367                 screen_file_reload(c);
 368 #ifndef NCMPC_MINI
 369                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 370 #endif
 371                 list_window_check_selected(browser.lw,
 372                                            filelist_length(browser.filelist));
 373                 screen_file_repaint();
 374                 return false;
 375
 376         default:
 377                 break;
 378         }
 379
 380         if (browser_cmd(&browser, c, cmd)) {
 381                 if (screen_is_visible(&screen_browse))
 382                         screen_file_repaint();
 383                 return true;
 384         }
 385
 386         if (!mpdclient_is_connected(c))
 387                 return false;
 388
 389         switch(cmd) {
 390         case CMD_DELETE:
 391                 handle_delete(c);
 392                 screen_file_repaint();
 393                 break;
 394
 395         case CMD_SAVE_PLAYLIST:
 396                 handle_save(c);
 397                 break;
 398
 399         case CMD_DB_UPDATE:
 400                 screen_database_update(c, current_path);
 401                 return true;
 402
 403         default:
 404                 break;
 405         }
 406
 407         return false;
 408 }
 409
 410 const struct screen_functions screen_browse = {
 411         .init = screen_file_init,
 412         .exit = screen_file_exit,
 413         .open = screen_file_open,
 414         .resize = screen_file_resize,
 415         .paint = screen_file_paint,
 416         .update = screen_file_update,
 417         .cmd = screen_file_cmd,
 418         .get_title = screen_file_get_title,
 419 };
 420
 421 bool
 422 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 423 {
 424         const char *uri, *slash, *parent;
 425         char *allocated = NULL;
 426         bool ret;
 427         int i;
 428
 429         assert(song != NULL);
 430
 431         uri = mpd_song_get_uri(song);
 432
 433         if (strstr(uri, "//") != NULL)
 434                 /* an URL? */
 435                 return false;
 436
 437         /* determine the song's parent directory and go there */
 438
 439         slash = strrchr(uri, '/');
 440         if (slash != NULL)
 441                 parent = allocated = g_strndup(uri, slash - uri);
 442         else
 443                 parent = "";
 444
 445         ret = change_directory(c, parent);
 446         g_free(allocated);
 447         if (!ret)
 448                 return false;
 449
 450         /* select the specified song */
 451
 452         i = filelist_find_song(browser.filelist, song);
 453         if (i < 0)
 454                 i = 0;
 455
 456         list_window_set_selected(browser.lw, i);
 457
 458         /* finally, switch to the file screen */
 459         screen_switch(&screen_browse, c);
 460         return true;
 461 }