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