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 = mpdclient_get_connection(c);
  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         list_window_set_length(browser.lw,
  82                                filelist_length(browser.filelist));
  83 }
  84
  85 /**
  86  * Change to the specified absolute directory.
  87  */
  88 static bool
  89 change_directory(struct mpdclient *c, const char *new_path)
  90 {
  91         g_free(current_path);
  92         current_path = g_strdup(new_path);
  93
  94         screen_file_reload(c);
  95
  96 #ifndef NCMPC_MINI
  97         screen_browser_sync_highlights(browser.filelist, &c->playlist);
  98 #endif
  99
 100         list_window_reset(browser.lw);
 101
 102         return browser.filelist != NULL;
 103 }
 104
 105 /**
 106  * Change to the parent directory of the current directory.
 107  */
 108 static bool
 109 change_to_parent(struct mpdclient *c)
 110 {
 111         char *parent = g_path_get_dirname(current_path);
 112         char *old_path;
 113         int idx;
 114         bool success;
 115
 116         if (strcmp(parent, ".") == 0)
 117                 parent[0] = '\0';
 118
 119         old_path = current_path;
 120         current_path = NULL;
 121
 122         success = change_directory(c, parent);
 123         g_free(parent);
 124
 125         idx = success
 126                 ? filelist_find_directory(browser.filelist, old_path)
 127                 : -1;
 128         g_free(old_path);
 129
 130         if (success && idx >= 0) {
 131                 /* set the cursor on the previous working directory */
 132                 list_window_set_cursor(browser.lw, idx);
 133                 list_window_center(browser.lw, idx);
 134         }
 135
 136         return success;
 137 }
 138
 139 /**
 140  * Change to the directory referred by the specified #filelist_entry
 141  * object.
 142  */
 143 static bool
 144 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 145 {
 146         assert(entry != NULL);
 147
 148         if (entry->entity == NULL)
 149                 return change_to_parent(c);
 150         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 151                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 152         else
 153                 return false;
 154 }
 155
 156 static bool
 157 screen_file_handle_enter(struct mpdclient *c)
 158 {
 159         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 160
 161         if (entry == NULL)
 162                 return false;
 163
 164         return change_to_entry(c, entry);
 165 }
 166
 167 static int
 168 handle_save(struct mpdclient *c)
 169 {
 170         struct list_window_range range;
 171         const char *defaultname = NULL;
 172         char *defaultname_utf8 = NULL;
 173         int ret;
 174
 175         list_window_get_range(browser.lw, &range);
 176         if (range.start == range.end)
 177                 return -1;
 178
 179         for (unsigned i = range.start; i < range.end; ++i) {
 180                 struct filelist_entry *entry =
 181                         filelist_get(browser.filelist, i);
 182                 if( entry && entry->entity ) {
 183                         struct mpd_entity *entity = entry->entity;
 184                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 185                                 const struct mpd_playlist *playlist =
 186                                         mpd_entity_get_playlist(entity);
 187                                 defaultname = mpd_playlist_get_path(playlist);
 188                         }
 189                 }
 190         }
 191
 192         if(defaultname)
 193                 defaultname_utf8 = utf8_to_locale(defaultname);
 194         ret = playlist_save(c, NULL, defaultname_utf8);
 195         g_free(defaultname_utf8);
 196
 197         return ret;
 198 }
 199
 200 static int
 201 handle_delete(struct mpdclient *c)
 202 {
 203         struct mpd_connection *connection = mpdclient_get_connection(c);
 204         struct list_window_range range;
 205         struct mpd_entity *entity;
 206         const struct mpd_playlist *playlist;
 207         char *str, *buf;
 208         int key;
 209
 210         list_window_get_range(browser.lw, &range);
 211         for (unsigned i = range.start; i < range.end; ++i) {
 212                 struct filelist_entry *entry =
 213                         filelist_get(browser.filelist, i);
 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(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         list_window_resize(browser.lw, cols, rows);
 266 }
 267
 268 static void
 269 screen_file_exit(void)
 270 {
 271         if (browser.filelist)
 272                 filelist_free(browser.filelist);
 273         list_window_free(browser.lw);
 274
 275         g_free(current_path);
 276 }
 277
 278 static void
 279 screen_file_open(struct mpdclient *c)
 280 {
 281         screen_file_reload(c);
 282 }
 283
 284 static const char *
 285 screen_file_get_title(char *str, size_t size)
 286 {
 287         const char *path = NULL, *prev = NULL, *slash = current_path;
 288         char *path_locale;
 289
 290         /* determine the last 2 parts of the path */
 291         while ((slash = strchr(slash, '/')) != NULL) {
 292                 path = prev;
 293                 prev = ++slash;
 294         }
 295
 296         if (path == NULL)
 297                 /* fall back to full path */
 298                 path = current_path;
 299
 300         path_locale = utf8_to_locale(path);
 301         g_snprintf(str, size, "%s: %s",
 302                    /* translators: caption of the browser screen */
 303                    _("Browse"), path_locale);
 304         g_free(path_locale);
 305         return str;
 306 }
 307
 308 static void
 309 screen_file_paint(void)
 310 {
 311         screen_browser_paint(&browser);
 312 }
 313
 314 static void
 315 screen_file_update(struct mpdclient *c)
 316 {
 317         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 318                 /* the db has changed -> update the filelist */
 319                 screen_file_reload(c);
 320         }
 321
 322 #ifndef NCMPC_MINI
 323         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST |
 324                          MPD_IDLE_PLAYLIST))
 325                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 326 #endif
 327
 328         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 329 #ifndef NCMPC_MINI
 330                          | MPD_IDLE_PLAYLIST
 331 #endif
 332                          ))
 333                 screen_file_repaint();
 334 }
 335
 336 static bool
 337 screen_file_cmd(struct mpdclient *c, command_t cmd)
 338 {
 339         switch(cmd) {
 340         case CMD_PLAY:
 341                 if (screen_file_handle_enter(c)) {
 342                         screen_file_repaint();
 343                         return true;
 344                 }
 345
 346                 break;
 347
 348         case CMD_GO_ROOT_DIRECTORY:
 349                 change_directory(c, "");
 350                 screen_file_repaint();
 351                 return true;
 352         case CMD_GO_PARENT_DIRECTORY:
 353                 change_to_parent(c);
 354                 screen_file_repaint();
 355                 return true;
 356
 357         case CMD_LOCATE:
 358                 /* don't let browser_cmd() evaluate the locate command
 359                    - it's a no-op, and by the way, leads to a
 360                    segmentation fault in the current implementation */
 361                 return false;
 362
 363         case CMD_SCREEN_UPDATE:
 364                 screen_file_reload(c);
 365 #ifndef NCMPC_MINI
 366                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 367 #endif
 368                 screen_file_repaint();
 369                 return false;
 370
 371         default:
 372                 break;
 373         }
 374
 375         if (browser_cmd(&browser, c, cmd)) {
 376                 if (screen_is_visible(&screen_browse))
 377                         screen_file_repaint();
 378                 return true;
 379         }
 380
 381         if (!mpdclient_is_connected(c))
 382                 return false;
 383
 384         switch(cmd) {
 385         case CMD_DELETE:
 386                 handle_delete(c);
 387                 screen_file_repaint();
 388                 break;
 389
 390         case CMD_SAVE_PLAYLIST:
 391                 handle_save(c);
 392                 break;
 393
 394         case CMD_DB_UPDATE:
 395                 screen_database_update(c, current_path);
 396                 return true;
 397
 398         default:
 399                 break;
 400         }
 401
 402         return false;
 403 }
 404
 405 const struct screen_functions screen_browse = {
 406         .init = screen_file_init,
 407         .exit = screen_file_exit,
 408         .open = screen_file_open,
 409         .resize = screen_file_resize,
 410         .paint = screen_file_paint,
 411         .update = screen_file_update,
 412         .cmd = screen_file_cmd,
 413         .get_title = screen_file_get_title,
 414 };
 415
 416 bool
 417 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 418 {
 419         const char *uri, *slash, *parent;
 420         char *allocated = NULL;
 421         bool ret;
 422         int i;
 423
 424         assert(song != NULL);
 425
 426         uri = mpd_song_get_uri(song);
 427
 428         if (strstr(uri, "//") != NULL)
 429                 /* an URL? */
 430                 return false;
 431
 432         /* determine the song's parent directory and go there */
 433
 434         slash = strrchr(uri, '/');
 435         if (slash != NULL)
 436                 parent = allocated = g_strndup(uri, slash - uri);
 437         else
 438                 parent = "";
 439
 440         ret = change_directory(c, parent);
 441         g_free(allocated);
 442         if (!ret)
 443                 return false;
 444
 445         /* select the specified song */
 446
 447         i = filelist_find_song(browser.filelist, song);
 448         if (i < 0)
 449                 i = 0;
 450
 451         list_window_set_cursor(browser.lw, i);
 452
 453         /* finally, switch to the file screen */
 454         screen_switch(&screen_browse, c);
 455         return true;
 456 }