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         struct mpd_connection *connection;
  58
  59         if (browser.filelist != NULL)
  60                 filelist_free(browser.filelist);
  61
  62         browser.filelist = filelist_new();
  63         if (*current_path != 0)
  64                 /* add a dummy entry for ./.. */
  65                 filelist_append(browser.filelist, NULL);
  66
  67         if (!mpdclient_is_connected(c))
  68                 return;
  69
  70         connection = mpdclient_get_connection(c);
  71
  72         mpd_send_list_meta(connection, current_path);
  73         filelist_recv(browser.filelist, connection);
  74
  75         if (mpd_response_finish(connection))
  76                 filelist_sort_dir_play(browser.filelist,
  77                                        compare_filelist_entry_path);
  78         else
  79                 mpdclient_handle_error(c);
  80
  81         list_window_set_length(browser.lw,
  82                                filelist_length(browser.filelist));
  83 }
  84
  85 /**
  86  * Change to the specified absolute directory.
  87  */
  88 static bool
  89 change_directory(struct mpdclient *c, const char *new_path)
  90 {
  91         g_free(current_path);
  92         current_path = g_strdup(new_path);
  93
  94         screen_file_reload(c);
  95
  96 #ifndef NCMPC_MINI
  97         screen_browser_sync_highlights(browser.filelist, &c->playlist);
  98 #endif
  99
 100         list_window_reset(browser.lw);
 101
 102         return browser.filelist != NULL;
 103 }
 104
 105 /**
 106  * Change to the parent directory of the current directory.
 107  */
 108 static bool
 109 change_to_parent(struct mpdclient *c)
 110 {
 111         char *parent = g_path_get_dirname(current_path);
 112         char *old_path;
 113         int idx;
 114         bool success;
 115
 116         if (strcmp(parent, ".") == 0)
 117                 parent[0] = '\0';
 118
 119         old_path = current_path;
 120         current_path = NULL;
 121
 122         success = change_directory(c, parent);
 123         g_free(parent);
 124
 125         idx = success
 126                 ? filelist_find_directory(browser.filelist, old_path)
 127                 : -1;
 128         g_free(old_path);
 129
 130         if (success && idx >= 0) {
 131                 /* set the cursor on the previous working directory */
 132                 list_window_set_cursor(browser.lw, idx);
 133                 list_window_center(browser.lw, idx);
 134         }
 135
 136         return success;
 137 }
 138
 139 /**
 140  * Change to the directory referred by the specified #filelist_entry
 141  * object.
 142  */
 143 static bool
 144 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 145 {
 146         assert(entry != NULL);
 147
 148         if (entry->entity == NULL)
 149                 return change_to_parent(c);
 150         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 151                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 152         else
 153                 return false;
 154 }
 155
 156 static bool
 157 screen_file_handle_enter(struct mpdclient *c)
 158 {
 159         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 160
 161         if (entry == NULL)
 162                 return false;
 163
 164         return change_to_entry(c, entry);
 165 }
 166
 167 static int
 168 handle_save(struct mpdclient *c)
 169 {
 170         struct filelist_entry *entry;
 171         const char *defaultname = NULL;
 172         char *defaultname_utf8 = NULL;
 173         int ret;
 174         unsigned selected;
 175
 176         if (browser.lw->selected >= filelist_length(browser.filelist))
 177                 return -1;
 178
 179         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 180         {
 181                 entry = filelist_get(browser.filelist, selected);
 182                 if( entry && entry->entity ) {
 183                         struct mpd_entity *entity = entry->entity;
 184                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 185                                 const struct mpd_playlist *playlist =
 186                                         mpd_entity_get_playlist(entity);
 187                                 defaultname = mpd_playlist_get_path(playlist);
 188                         }
 189                 }
 190         }
 191
 192         if(defaultname)
 193                 defaultname_utf8 = utf8_to_locale(defaultname);
 194         ret = playlist_save(c, NULL, defaultname_utf8);
 195         g_free(defaultname_utf8);
 196
 197         return ret;
 198 }
 199
 200 static int
 201 handle_delete(struct mpdclient *c)
 202 {
 203         struct mpd_connection *connection = mpdclient_get_connection(c);
 204         struct filelist_entry *entry;
 205         struct mpd_entity *entity;
 206         const struct mpd_playlist *playlist;
 207         char *str, *buf;
 208         int key;
 209         unsigned selected;
 210
 211         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 212         {
 213                 if (selected >= filelist_length(browser.filelist))
 214                         return -1;
 215
 216                 entry = filelist_get(browser.filelist, selected);
 217                 if( entry==NULL || entry->entity==NULL )
 218                         continue;
 219
 220                 entity = entry->entity;
 221
 222                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 223                         /* translators: the "delete" command is only possible
 224                            for playlists; the user attempted to delete a song
 225                            or a directory or something else */
 226                         screen_status_printf(_("Deleting this item is not possible"));
 227                         screen_bell();
 228                         continue;
 229                 }
 230
 231                 playlist = mpd_entity_get_playlist(entity);
 232                 str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 233                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 234                 g_free(str);
 235                 key = tolower(screen_getch(buf));
 236                 g_free(buf);
 237                 if( key != YES[0] ) {
 238                         /* translators: a dialog was aborted by the user */
 239                         screen_status_printf(_("Aborted"));
 240                         return 0;
 241                 }
 242
 243                 if (!mpd_run_rm(connection, mpd_playlist_get_path(playlist))) {
 244                         mpdclient_handle_error(c);
 245                         break;
 246                 }
 247
 248                 c->events |= MPD_IDLE_STORED_PLAYLIST;
 249
 250                 /* translators: MPD deleted the playlist, as requested by the
 251                    user */
 252                 screen_status_printf(_("Playlist deleted"));
 253         }
 254         return 0;
 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         browser.lw->cols = cols;
 269         browser.lw->rows = rows;
 270 }
 271
 272 static void
 273 screen_file_exit(void)
 274 {
 275         if (browser.filelist)
 276                 filelist_free(browser.filelist);
 277         list_window_free(browser.lw);
 278
 279         g_free(current_path);
 280 }
 281
 282 static void
 283 screen_file_open(struct mpdclient *c)
 284 {
 285         screen_file_reload(c);
 286 }
 287
 288 static const char *
 289 screen_file_get_title(char *str, size_t size)
 290 {
 291         const char *path = NULL, *prev = NULL, *slash = current_path;
 292         char *path_locale;
 293
 294         /* determine the last 2 parts of the path */
 295         while ((slash = strchr(slash, '/')) != NULL) {
 296                 path = prev;
 297                 prev = ++slash;
 298         }
 299
 300         if (path == NULL)
 301                 /* fall back to full path */
 302                 path = current_path;
 303
 304         path_locale = utf8_to_locale(path);
 305         g_snprintf(str, size, "%s: %s",
 306                    /* translators: caption of the browser screen */
 307                    _("Browse"), path_locale);
 308         g_free(path_locale);
 309         return str;
 310 }
 311
 312 static void
 313 screen_file_paint(void)
 314 {
 315         list_window_paint(browser.lw, browser_lw_callback, browser.filelist);
 316 }
 317
 318 static void
 319 screen_file_update(struct mpdclient *c)
 320 {
 321         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 322                 /* the db has changed -> update the filelist */
 323                 screen_file_reload(c);
 324         }
 325
 326 #ifndef NCMPC_MINI
 327         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST |
 328                          MPD_IDLE_PLAYLIST))
 329                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 330 #endif
 331
 332         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 333 #ifndef NCMPC_MINI
 334                          | MPD_IDLE_PLAYLIST
 335 #endif
 336                          ))
 337                 screen_file_repaint();
 338 }
 339
 340 static bool
 341 screen_file_cmd(struct mpdclient *c, command_t cmd)
 342 {
 343         switch(cmd) {
 344         case CMD_PLAY:
 345                 if (screen_file_handle_enter(c)) {
 346                         screen_file_repaint();
 347                         return true;
 348                 }
 349
 350                 break;
 351
 352         case CMD_GO_ROOT_DIRECTORY:
 353                 change_directory(c, "");
 354                 screen_file_repaint();
 355                 return true;
 356         case CMD_GO_PARENT_DIRECTORY:
 357                 change_to_parent(c);
 358                 screen_file_repaint();
 359                 return true;
 360
 361         case CMD_LOCATE:
 362                 /* don't let browser_cmd() evaluate the locate command
 363                    - it's a no-op, and by the way, leads to a
 364                    segmentation fault in the current implementation */
 365                 return false;
 366
 367         case CMD_SCREEN_UPDATE:
 368                 screen_file_reload(c);
 369 #ifndef NCMPC_MINI
 370                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 371 #endif
 372                 screen_file_repaint();
 373                 return false;
 374
 375         default:
 376                 break;
 377         }
 378
 379         if (browser_cmd(&browser, c, cmd)) {
 380                 if (screen_is_visible(&screen_browse))
 381                         screen_file_repaint();
 382                 return true;
 383         }
 384
 385         if (!mpdclient_is_connected(c))
 386                 return false;
 387
 388         switch(cmd) {
 389         case CMD_DELETE:
 390                 handle_delete(c);
 391                 screen_file_repaint();
 392                 break;
 393
 394         case CMD_SAVE_PLAYLIST:
 395                 handle_save(c);
 396                 break;
 397
 398         case CMD_DB_UPDATE:
 399                 screen_database_update(c, current_path);
 400                 return true;
 401
 402         default:
 403                 break;
 404         }
 405
 406         return false;
 407 }
 408
 409 const struct screen_functions screen_browse = {
 410         .init = screen_file_init,
 411         .exit = screen_file_exit,
 412         .open = screen_file_open,
 413         .resize = screen_file_resize,
 414         .paint = screen_file_paint,
 415         .update = screen_file_update,
 416         .cmd = screen_file_cmd,
 417         .get_title = screen_file_get_title,
 418 };
 419
 420 bool
 421 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 422 {
 423         const char *uri, *slash, *parent;
 424         char *allocated = NULL;
 425         bool ret;
 426         int i;
 427
 428         assert(song != NULL);
 429
 430         uri = mpd_song_get_uri(song);
 431
 432         if (strstr(uri, "//") != NULL)
 433                 /* an URL? */
 434                 return false;
 435
 436         /* determine the song's parent directory and go there */
 437
 438         slash = strrchr(uri, '/');
 439         if (slash != NULL)
 440                 parent = allocated = g_strndup(uri, slash - uri);
 441         else
 442                 parent = "";
 443
 444         ret = change_directory(c, parent);
 445         g_free(allocated);
 446         if (!ret)
 447                 return false;
 448
 449         /* select the specified song */
 450
 451         i = filelist_find_song(browser.filelist, song);
 452         if (i < 0)
 453                 i = 0;
 454
 455         list_window_set_cursor(browser.lw, i);
 456
 457         /* finally, switch to the file screen */
 458         screen_switch(&screen_browse, c);
 459         return true;
 460 }