src/screen_file.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 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_queue.h"
  25 #include "screen.h"
  26 #include "config.h"
  27 #include "i18n.h"
  28 #include "charset.h"
  29 #include "mpdclient.h"
  30 #include "filelist.h"
  31 #include "screen_utils.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_load_list(struct mpdclient *c, struct filelist *filelist)
  56 {
  57         struct mpd_connection *connection;
  58
  59         connection = mpdclient_get_connection(c);
  60         if (connection == NULL)
  61                 return;
  62
  63         mpd_send_list_meta(connection, current_path);
  64         filelist_recv(filelist, connection);
  65
  66         if (mpd_response_finish(connection))
  67                 filelist_sort_dir_play(filelist, compare_filelist_entry_path);
  68         else
  69                 mpdclient_handle_error(c);
  70 }
  71
  72 static void
  73 screen_file_reload(struct mpdclient *c)
  74 {
  75         if (browser.filelist != NULL)
  76                 filelist_free(browser.filelist);
  77
  78         browser.filelist = filelist_new();
  79         if (*current_path != 0)
  80                 /* add a dummy entry for ./.. */
  81                 filelist_append(browser.filelist, NULL);
  82
  83         screen_file_load_list(c, browser.filelist);
  84
  85         list_window_set_length(browser.lw,
  86                                filelist_length(browser.filelist));
  87 }
  88
  89 /**
  90  * Change to the specified absolute directory.
  91  */
  92 static bool
  93 change_directory(struct mpdclient *c, const char *new_path)
  94 {
  95         g_free(current_path);
  96         current_path = g_strdup(new_path);
  97
  98         screen_file_reload(c);
  99
 100         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 101
 102         list_window_reset(browser.lw);
 103
 104         return browser.filelist != NULL;
 105 }
 106
 107 /**
 108  * Change to the parent directory of the current directory.
 109  */
 110 static bool
 111 change_to_parent(struct mpdclient *c)
 112 {
 113         char *parent = g_path_get_dirname(current_path);
 114         char *old_path;
 115         int idx;
 116         bool success;
 117
 118         if (strcmp(parent, ".") == 0)
 119                 parent[0] = '\0';
 120
 121         old_path = current_path;
 122         current_path = NULL;
 123
 124         success = change_directory(c, parent);
 125         g_free(parent);
 126
 127         idx = success
 128                 ? filelist_find_directory(browser.filelist, old_path)
 129                 : -1;
 130         g_free(old_path);
 131
 132         if (success && idx >= 0) {
 133                 /* set the cursor on the previous working directory */
 134                 list_window_set_cursor(browser.lw, idx);
 135                 list_window_center(browser.lw, idx);
 136         }
 137
 138         return success;
 139 }
 140
 141 /**
 142  * Change to the directory referred by the specified #filelist_entry
 143  * object.
 144  */
 145 static bool
 146 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 147 {
 148         assert(entry != NULL);
 149
 150         if (entry->entity == NULL)
 151                 return change_to_parent(c);
 152         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 153                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 154         else
 155                 return false;
 156 }
 157
 158 static bool
 159 screen_file_handle_enter(struct mpdclient *c)
 160 {
 161         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 162
 163         if (entry == NULL)
 164                 return false;
 165
 166         return change_to_entry(c, entry);
 167 }
 168
 169 static void
 170 handle_save(struct mpdclient *c)
 171 {
 172         struct list_window_range range;
 173         const char *defaultname = NULL;
 174         char *defaultname_utf8 = NULL;
 175
 176         list_window_get_range(browser.lw, &range);
 177         if (range.start == range.end)
 178                 return;
 179
 180         for (unsigned i = range.start; i < range.end; ++i) {
 181                 struct filelist_entry *entry =
 182                         filelist_get(browser.filelist, i);
 183                 if( entry && entry->entity ) {
 184                         struct mpd_entity *entity = entry->entity;
 185                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 186                                 const struct mpd_playlist *playlist =
 187                                         mpd_entity_get_playlist(entity);
 188                                 defaultname = mpd_playlist_get_path(playlist);
 189                         }
 190                 }
 191         }
 192
 193         if(defaultname)
 194                 defaultname_utf8 = utf8_to_locale(defaultname);
 195         playlist_save(c, NULL, defaultname_utf8);
 196         g_free(defaultname_utf8);
 197 }
 198
 199 static void
 200 handle_delete(struct mpdclient *c)
 201 {
 202         struct mpd_connection *connection = mpdclient_get_connection(c);
 203         struct list_window_range range;
 204         struct mpd_entity *entity;
 205         const struct mpd_playlist *playlist;
 206         char *str, *buf;
 207         int key;
 208
 209         if (connection == NULL)
 210                 return;
 211
 212         list_window_get_range(browser.lw, &range);
 213         for (unsigned i = range.start; i < range.end; ++i) {
 214                 struct filelist_entry *entry =
 215                         filelist_get(browser.filelist, i);
 216                 if( entry==NULL || entry->entity==NULL )
 217                         continue;
 218
 219                 entity = entry->entity;
 220
 221                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 222                         /* translators: the "delete" command is only possible
 223                            for playlists; the user attempted to delete a song
 224                            or a directory or something else */
 225                         screen_status_printf(_("Deleting this item is not possible"));
 226                         screen_bell();
 227                         continue;
 228                 }
 229
 230                 playlist = mpd_entity_get_playlist(entity);
 231                 str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 232                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 233                 g_free(str);
 234                 key = tolower(screen_getch(buf));
 235                 g_free(buf);
 236                 if( key != YES[0] ) {
 237                         /* translators: a dialog was aborted by the user */
 238                         screen_status_printf(_("Aborted"));
 239                         return;
 240                 }
 241
 242                 if (!mpd_run_rm(connection, mpd_playlist_get_path(playlist))) {
 243                         mpdclient_handle_error(c);
 244                         break;
 245                 }
 246
 247                 c->events |= MPD_IDLE_STORED_PLAYLIST;
 248
 249                 /* translators: MPD deleted the playlist, as requested by the
 250                    user */
 251                 screen_status_printf(_("Playlist deleted"));
 252         }
 253 }
 254
 255 static void
 256 screen_file_init(WINDOW *w, int cols, int rows)
 257 {
 258         current_path = g_strdup("");
 259
 260         browser.lw = list_window_init(w, cols, rows);
 261 }
 262
 263 static void
 264 screen_file_resize(int cols, int rows)
 265 {
 266         list_window_resize(browser.lw, cols, 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         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 284 }
 285
 286 static const char *
 287 screen_file_get_title(char *str, size_t size)
 288 {
 289         const char *path = NULL, *prev = NULL, *slash = current_path;
 290         char *path_locale;
 291
 292         /* determine the last 2 parts of the path */
 293         while ((slash = strchr(slash, '/')) != NULL) {
 294                 path = prev;
 295                 prev = ++slash;
 296         }
 297
 298         if (path == NULL)
 299                 /* fall back to full path */
 300                 path = current_path;
 301
 302         path_locale = utf8_to_locale(path);
 303         g_snprintf(str, size, "%s: %s",
 304                    /* translators: caption of the browser screen */
 305                    _("Browse"), path_locale);
 306         g_free(path_locale);
 307         return str;
 308 }
 309
 310 static void
 311 screen_file_paint(void)
 312 {
 313         screen_browser_paint(&browser);
 314 }
 315
 316 static void
 317 screen_file_update(struct mpdclient *c)
 318 {
 319         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 320                 /* the db has changed -> update the filelist */
 321                 screen_file_reload(c);
 322         }
 323
 324         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 325 #ifndef NCMPC_MINI
 326                          | MPD_IDLE_QUEUE
 327 #endif
 328                          )) {
 329                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 330                 screen_file_repaint();
 331         }
 332 }
 333
 334 static bool
 335 screen_file_cmd(struct mpdclient *c, command_t cmd)
 336 {
 337         switch(cmd) {
 338         case CMD_PLAY:
 339                 if (screen_file_handle_enter(c)) {
 340                         screen_file_repaint();
 341                         return true;
 342                 }
 343
 344                 break;
 345
 346         case CMD_GO_ROOT_DIRECTORY:
 347                 change_directory(c, "");
 348                 screen_file_repaint();
 349                 return true;
 350         case CMD_GO_PARENT_DIRECTORY:
 351                 change_to_parent(c);
 352                 screen_file_repaint();
 353                 return true;
 354
 355         case CMD_LOCATE:
 356                 /* don't let browser_cmd() evaluate the locate command
 357                    - it's a no-op, and by the way, leads to a
 358                    segmentation fault in the current implementation */
 359                 return false;
 360
 361         case CMD_SCREEN_UPDATE:
 362                 screen_file_reload(c);
 363                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 364                 screen_file_repaint();
 365                 return false;
 366
 367         default:
 368                 break;
 369         }
 370
 371         if (browser_cmd(&browser, c, cmd)) {
 372                 if (screen_is_visible(&screen_browse))
 373                         screen_file_repaint();
 374                 return true;
 375         }
 376
 377         if (!mpdclient_is_connected(c))
 378                 return false;
 379
 380         switch(cmd) {
 381         case CMD_DELETE:
 382                 handle_delete(c);
 383                 screen_file_repaint();
 384                 break;
 385
 386         case CMD_SAVE_PLAYLIST:
 387                 handle_save(c);
 388                 break;
 389
 390         case CMD_DB_UPDATE:
 391                 screen_database_update(c, current_path);
 392                 return true;
 393
 394         default:
 395                 break;
 396         }
 397
 398         return false;
 399 }
 400
 401 const struct screen_functions screen_browse = {
 402         .init = screen_file_init,
 403         .exit = screen_file_exit,
 404         .open = screen_file_open,
 405         .resize = screen_file_resize,
 406         .paint = screen_file_paint,
 407         .update = screen_file_update,
 408         .cmd = screen_file_cmd,
 409         .get_title = screen_file_get_title,
 410 };
 411
 412 bool
 413 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 414 {
 415         const char *uri, *slash, *parent;
 416         char *allocated = NULL;
 417         bool ret;
 418         int i;
 419
 420         assert(song != NULL);
 421
 422         uri = mpd_song_get_uri(song);
 423
 424         if (strstr(uri, "//") != NULL)
 425                 /* an URL? */
 426                 return false;
 427
 428         /* determine the song's parent directory and go there */
 429
 430         slash = strrchr(uri, '/');
 431         if (slash != NULL)
 432                 parent = allocated = g_strndup(uri, slash - uri);
 433         else
 434                 parent = "";
 435
 436         ret = change_directory(c, parent);
 437         g_free(allocated);
 438         if (!ret)
 439                 return false;
 440
 441         /* select the specified song */
 442
 443         i = filelist_find_song(browser.filelist, song);
 444         if (i < 0)
 445                 i = 0;
 446
 447         list_window_set_cursor(browser.lw, i);
 448
 449         /* finally, switch to the file screen */
 450         screen_switch(&screen_browse, c);
 451         return true;
 452 }