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