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         if (!mpdclient_is_connected(c))
  60                 return;
  61
  62         connection = mpdclient_get_connection(c);
  63
  64         mpd_send_list_meta(connection, current_path);
  65         filelist_recv(filelist, connection);
  66
  67         if (mpd_response_finish(connection))
  68                 filelist_sort_dir_play(filelist, compare_filelist_entry_path);
  69         else
  70                 mpdclient_handle_error(c);
  71 }
  72
  73 static void
  74 screen_file_reload(struct mpdclient *c)
  75 {
  76         if (browser.filelist != NULL)
  77                 filelist_free(browser.filelist);
  78
  79         browser.filelist = filelist_new();
  80         if (*current_path != 0)
  81                 /* add a dummy entry for ./.. */
  82                 filelist_append(browser.filelist, NULL);
  83
  84         screen_file_load_list(c, browser.filelist);
  85
  86         list_window_set_length(browser.lw,
  87                                filelist_length(browser.filelist));
  88 }
  89
  90 /**
  91  * Change to the specified absolute directory.
  92  */
  93 static bool
  94 change_directory(struct mpdclient *c, const char *new_path)
  95 {
  96         g_free(current_path);
  97         current_path = g_strdup(new_path);
  98
  99         screen_file_reload(c);
 100
 101 #ifndef NCMPC_MINI
 102         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 103 #endif
 104
 105         list_window_reset(browser.lw);
 106
 107         return browser.filelist != NULL;
 108 }
 109
 110 /**
 111  * Change to the parent directory of the current directory.
 112  */
 113 static bool
 114 change_to_parent(struct mpdclient *c)
 115 {
 116         char *parent = g_path_get_dirname(current_path);
 117         char *old_path;
 118         int idx;
 119         bool success;
 120
 121         if (strcmp(parent, ".") == 0)
 122                 parent[0] = '\0';
 123
 124         old_path = current_path;
 125         current_path = NULL;
 126
 127         success = change_directory(c, parent);
 128         g_free(parent);
 129
 130         idx = success
 131                 ? filelist_find_directory(browser.filelist, old_path)
 132                 : -1;
 133         g_free(old_path);
 134
 135         if (success && idx >= 0) {
 136                 /* set the cursor on the previous working directory */
 137                 list_window_set_cursor(browser.lw, idx);
 138                 list_window_center(browser.lw, idx);
 139         }
 140
 141         return success;
 142 }
 143
 144 /**
 145  * Change to the directory referred by the specified #filelist_entry
 146  * object.
 147  */
 148 static bool
 149 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 150 {
 151         assert(entry != NULL);
 152
 153         if (entry->entity == NULL)
 154                 return change_to_parent(c);
 155         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 156                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 157         else
 158                 return false;
 159 }
 160
 161 static bool
 162 screen_file_handle_enter(struct mpdclient *c)
 163 {
 164         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 165
 166         if (entry == NULL)
 167                 return false;
 168
 169         return change_to_entry(c, entry);
 170 }
 171
 172 static void
 173 handle_save(struct mpdclient *c)
 174 {
 175         struct list_window_range range;
 176         const char *defaultname = NULL;
 177         char *defaultname_utf8 = NULL;
 178
 179         list_window_get_range(browser.lw, &range);
 180         if (range.start == range.end)
 181                 return;
 182
 183         for (unsigned i = range.start; i < range.end; ++i) {
 184                 struct filelist_entry *entry =
 185                         filelist_get(browser.filelist, i);
 186                 if( entry && entry->entity ) {
 187                         struct mpd_entity *entity = entry->entity;
 188                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 189                                 const struct mpd_playlist *playlist =
 190                                         mpd_entity_get_playlist(entity);
 191                                 defaultname = mpd_playlist_get_path(playlist);
 192                         }
 193                 }
 194         }
 195
 196         if(defaultname)
 197                 defaultname_utf8 = utf8_to_locale(defaultname);
 198         playlist_save(c, NULL, defaultname_utf8);
 199         g_free(defaultname_utf8);
 200 }
 201
 202 static void
 203 handle_delete(struct mpdclient *c)
 204 {
 205         struct mpd_connection *connection = mpdclient_get_connection(c);
 206         struct list_window_range range;
 207         struct mpd_entity *entity;
 208         const struct mpd_playlist *playlist;
 209         char *str, *buf;
 210         int key;
 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 }
 284
 285 static const char *
 286 screen_file_get_title(char *str, size_t size)
 287 {
 288         const char *path = NULL, *prev = NULL, *slash = current_path;
 289         char *path_locale;
 290
 291         /* determine the last 2 parts of the path */
 292         while ((slash = strchr(slash, '/')) != NULL) {
 293                 path = prev;
 294                 prev = ++slash;
 295         }
 296
 297         if (path == NULL)
 298                 /* fall back to full path */
 299                 path = current_path;
 300
 301         path_locale = utf8_to_locale(path);
 302         g_snprintf(str, size, "%s: %s",
 303                    /* translators: caption of the browser screen */
 304                    _("Browse"), path_locale);
 305         g_free(path_locale);
 306         return str;
 307 }
 308
 309 static void
 310 screen_file_paint(void)
 311 {
 312         screen_browser_paint(&browser);
 313 }
 314
 315 static void
 316 screen_file_update(struct mpdclient *c)
 317 {
 318         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 319                 /* the db has changed -> update the filelist */
 320                 screen_file_reload(c);
 321         }
 322
 323 #ifndef NCMPC_MINI
 324         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST |
 325                          MPD_IDLE_PLAYLIST))
 326                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 327 #endif
 328
 329         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 330 #ifndef NCMPC_MINI
 331                          | MPD_IDLE_PLAYLIST
 332 #endif
 333                          ))
 334                 screen_file_repaint();
 335 }
 336
 337 static bool
 338 screen_file_cmd(struct mpdclient *c, command_t cmd)
 339 {
 340         switch(cmd) {
 341         case CMD_PLAY:
 342                 if (screen_file_handle_enter(c)) {
 343                         screen_file_repaint();
 344                         return true;
 345                 }
 346
 347                 break;
 348
 349         case CMD_GO_ROOT_DIRECTORY:
 350                 change_directory(c, "");
 351                 screen_file_repaint();
 352                 return true;
 353         case CMD_GO_PARENT_DIRECTORY:
 354                 change_to_parent(c);
 355                 screen_file_repaint();
 356                 return true;
 357
 358         case CMD_LOCATE:
 359                 /* don't let browser_cmd() evaluate the locate command
 360                    - it's a no-op, and by the way, leads to a
 361                    segmentation fault in the current implementation */
 362                 return false;
 363
 364         case CMD_SCREEN_UPDATE:
 365                 screen_file_reload(c);
 366 #ifndef NCMPC_MINI
 367                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 368 #endif
 369                 screen_file_repaint();
 370                 return false;
 371
 372         default:
 373                 break;
 374         }
 375
 376         if (browser_cmd(&browser, c, cmd)) {
 377                 if (screen_is_visible(&screen_browse))
 378                         screen_file_repaint();
 379                 return true;
 380         }
 381
 382         if (!mpdclient_is_connected(c))
 383                 return false;
 384
 385         switch(cmd) {
 386         case CMD_DELETE:
 387                 handle_delete(c);
 388                 screen_file_repaint();
 389                 break;
 390
 391         case CMD_SAVE_PLAYLIST:
 392                 handle_save(c);
 393                 break;
 394
 395         case CMD_DB_UPDATE:
 396                 screen_database_update(c, current_path);
 397                 return true;
 398
 399         default:
 400                 break;
 401         }
 402
 403         return false;
 404 }
 405
 406 const struct screen_functions screen_browse = {
 407         .init = screen_file_init,
 408         .exit = screen_file_exit,
 409         .open = screen_file_open,
 410         .resize = screen_file_resize,
 411         .paint = screen_file_paint,
 412         .update = screen_file_update,
 413         .cmd = screen_file_cmd,
 414         .get_title = screen_file_get_title,
 415 };
 416
 417 bool
 418 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 419 {
 420         const char *uri, *slash, *parent;
 421         char *allocated = NULL;
 422         bool ret;
 423         int i;
 424
 425         assert(song != NULL);
 426
 427         uri = mpd_song_get_uri(song);
 428
 429         if (strstr(uri, "//") != NULL)
 430                 /* an URL? */
 431                 return false;
 432
 433         /* determine the song's parent directory and go there */
 434
 435         slash = strrchr(uri, '/');
 436         if (slash != NULL)
 437                 parent = allocated = g_strndup(uri, slash - uri);
 438         else
 439                 parent = "";
 440
 441         ret = change_directory(c, parent);
 442         g_free(allocated);
 443         if (!ret)
 444                 return false;
 445
 446         /* select the specified song */
 447
 448         i = filelist_find_song(browser.filelist, song);
 449         if (i < 0)
 450                 i = 0;
 451
 452         list_window_set_cursor(browser.lw, i);
 453
 454         /* finally, switch to the file screen */
 455         screen_switch(&screen_browse, c);
 456         return true;
 457 }