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_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 #ifndef NCMPC_MINI
 101         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 102 #endif
 103
 104         list_window_reset(browser.lw);
 105
 106         return browser.filelist != NULL;
 107 }
 108
 109 /**
 110  * Change to the parent directory of the current directory.
 111  */
 112 static bool
 113 change_to_parent(struct mpdclient *c)
 114 {
 115         char *parent = g_path_get_dirname(current_path);
 116         char *old_path;
 117         int idx;
 118         bool success;
 119
 120         if (strcmp(parent, ".") == 0)
 121                 parent[0] = '\0';
 122
 123         old_path = current_path;
 124         current_path = NULL;
 125
 126         success = change_directory(c, parent);
 127         g_free(parent);
 128
 129         idx = success
 130                 ? filelist_find_directory(browser.filelist, old_path)
 131                 : -1;
 132         g_free(old_path);
 133
 134         if (success && idx >= 0) {
 135                 /* set the cursor on the previous working directory */
 136                 list_window_set_cursor(browser.lw, idx);
 137                 list_window_center(browser.lw, idx);
 138         }
 139
 140         return success;
 141 }
 142
 143 /**
 144  * Change to the directory referred by the specified #filelist_entry
 145  * object.
 146  */
 147 static bool
 148 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 149 {
 150         assert(entry != NULL);
 151
 152         if (entry->entity == NULL)
 153                 return change_to_parent(c);
 154         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 155                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 156         else
 157                 return false;
 158 }
 159
 160 static bool
 161 screen_file_handle_enter(struct mpdclient *c)
 162 {
 163         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 164
 165         if (entry == NULL)
 166                 return false;
 167
 168         return change_to_entry(c, entry);
 169 }
 170
 171 static void
 172 handle_save(struct mpdclient *c)
 173 {
 174         struct list_window_range range;
 175         const char *defaultname = NULL;
 176         char *defaultname_utf8 = NULL;
 177
 178         list_window_get_range(browser.lw, &range);
 179         if (range.start == range.end)
 180                 return;
 181
 182         for (unsigned i = range.start; i < range.end; ++i) {
 183                 struct filelist_entry *entry =
 184                         filelist_get(browser.filelist, i);
 185                 if( entry && entry->entity ) {
 186                         struct mpd_entity *entity = entry->entity;
 187                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 188                                 const struct mpd_playlist *playlist =
 189                                         mpd_entity_get_playlist(entity);
 190                                 defaultname = mpd_playlist_get_path(playlist);
 191                         }
 192                 }
 193         }
 194
 195         if(defaultname)
 196                 defaultname_utf8 = utf8_to_locale(defaultname);
 197         playlist_save(c, NULL, defaultname_utf8);
 198         g_free(defaultname_utf8);
 199 }
 200
 201 static void
 202 handle_delete(struct mpdclient *c)
 203 {
 204         struct mpd_connection *connection = mpdclient_get_connection(c);
 205         struct list_window_range range;
 206         struct mpd_entity *entity;
 207         const struct mpd_playlist *playlist;
 208         char *str, *buf;
 209         int key;
 210
 211         if (connection == NULL)
 212                 return;
 213
 214         list_window_get_range(browser.lw, &range);
 215         for (unsigned i = range.start; i < range.end; ++i) {
 216                 struct filelist_entry *entry =
 217                         filelist_get(browser.filelist, i);
 218                 if( entry==NULL || entry->entity==NULL )
 219                         continue;
 220
 221                 entity = entry->entity;
 222
 223                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 224                         /* translators: the "delete" command is only possible
 225                            for playlists; the user attempted to delete a song
 226                            or a directory or something else */
 227                         screen_status_printf(_("Deleting this item is not possible"));
 228                         screen_bell();
 229                         continue;
 230                 }
 231
 232                 playlist = mpd_entity_get_playlist(entity);
 233                 str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 234                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 235                 g_free(str);
 236                 key = tolower(screen_getch(buf));
 237                 g_free(buf);
 238                 if( key != YES[0] ) {
 239                         /* translators: a dialog was aborted by the user */
 240                         screen_status_printf(_("Aborted"));
 241                         return;
 242                 }
 243
 244                 if (!mpd_run_rm(connection, mpd_playlist_get_path(playlist))) {
 245                         mpdclient_handle_error(c);
 246                         break;
 247                 }
 248
 249                 c->events |= MPD_IDLE_STORED_PLAYLIST;
 250
 251                 /* translators: MPD deleted the playlist, as requested by the
 252                    user */
 253                 screen_status_printf(_("Playlist deleted"));
 254         }
 255 }
 256
 257 static void
 258 screen_file_init(WINDOW *w, int cols, int rows)
 259 {
 260         current_path = g_strdup("");
 261
 262         browser.lw = list_window_init(w, cols, rows);
 263 }
 264
 265 static void
 266 screen_file_resize(int cols, int rows)
 267 {
 268         list_window_resize(browser.lw, cols, rows);
 269 }
 270
 271 static void
 272 screen_file_exit(void)
 273 {
 274         if (browser.filelist)
 275                 filelist_free(browser.filelist);
 276         list_window_free(browser.lw);
 277
 278         g_free(current_path);
 279 }
 280
 281 static void
 282 screen_file_open(struct mpdclient *c)
 283 {
 284         screen_file_reload(c);
 285 }
 286
 287 static const char *
 288 screen_file_get_title(char *str, size_t size)
 289 {
 290         const char *path = NULL, *prev = NULL, *slash = current_path;
 291         char *path_locale;
 292
 293         /* determine the last 2 parts of the path */
 294         while ((slash = strchr(slash, '/')) != NULL) {
 295                 path = prev;
 296                 prev = ++slash;
 297         }
 298
 299         if (path == NULL)
 300                 /* fall back to full path */
 301                 path = current_path;
 302
 303         path_locale = utf8_to_locale(path);
 304         g_snprintf(str, size, "%s: %s",
 305                    /* translators: caption of the browser screen */
 306                    _("Browse"), path_locale);
 307         g_free(path_locale);
 308         return str;
 309 }
 310
 311 static void
 312 screen_file_paint(void)
 313 {
 314         screen_browser_paint(&browser);
 315 }
 316
 317 static void
 318 screen_file_update(struct mpdclient *c)
 319 {
 320         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 321                 /* the db has changed -> update the filelist */
 322                 screen_file_reload(c);
 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                 screen_file_repaint();
 372                 return false;
 373
 374         default:
 375                 break;
 376         }
 377
 378         if (browser_cmd(&browser, c, cmd)) {
 379                 if (screen_is_visible(&screen_browse))
 380                         screen_file_repaint();
 381                 return true;
 382         }
 383
 384         if (!mpdclient_is_connected(c))
 385                 return false;
 386
 387         switch(cmd) {
 388         case CMD_DELETE:
 389                 handle_delete(c);
 390                 screen_file_repaint();
 391                 break;
 392
 393         case CMD_SAVE_PLAYLIST:
 394                 handle_save(c);
 395                 break;
 396
 397         case CMD_DB_UPDATE:
 398                 screen_database_update(c, current_path);
 399                 return true;
 400
 401         default:
 402                 break;
 403         }
 404
 405         return false;
 406 }
 407
 408 const struct screen_functions screen_browse = {
 409         .init = screen_file_init,
 410         .exit = screen_file_exit,
 411         .open = screen_file_open,
 412         .resize = screen_file_resize,
 413         .paint = screen_file_paint,
 414         .update = screen_file_update,
 415         .cmd = screen_file_cmd,
 416         .get_title = screen_file_get_title,
 417 };
 418
 419 bool
 420 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 421 {
 422         const char *uri, *slash, *parent;
 423         char *allocated = NULL;
 424         bool ret;
 425         int i;
 426
 427         assert(song != NULL);
 428
 429         uri = mpd_song_get_uri(song);
 430
 431         if (strstr(uri, "//") != NULL)
 432                 /* an URL? */
 433                 return false;
 434
 435         /* determine the song's parent directory and go there */
 436
 437         slash = strrchr(uri, '/');
 438         if (slash != NULL)
 439                 parent = allocated = g_strndup(uri, slash - uri);
 440         else
 441                 parent = "";
 442
 443         ret = change_directory(c, parent);
 444         g_free(allocated);
 445         if (!ret)
 446                 return false;
 447
 448         /* select the specified song */
 449
 450         i = filelist_find_song(browser.filelist, song);
 451         if (i < 0)
 452                 i = 0;
 453
 454         list_window_set_cursor(browser.lw, i);
 455
 456         /* finally, switch to the file screen */
 457         screen_switch(&screen_browse, c);
 458         return true;
 459 }