src/screen_file.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 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_status.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 (mpdclient_finish_command(c))
  67                 filelist_sort_dir_play(filelist, compare_filelist_entry_path);
  68 }
  69
  70 static void
  71 screen_file_reload(struct mpdclient *c)
  72 {
  73         if (browser.filelist != NULL)
  74                 filelist_free(browser.filelist);
  75
  76         browser.filelist = filelist_new();
  77         if (*current_path != 0)
  78                 /* add a dummy entry for ./.. */
  79                 filelist_append(browser.filelist, NULL);
  80
  81         screen_file_load_list(c, browser.filelist);
  82
  83         list_window_set_length(browser.lw,
  84                                filelist_length(browser.filelist));
  85 }
  86
  87 /**
  88  * Change to the specified absolute directory.
  89  */
  90 static bool
  91 change_directory(struct mpdclient *c, const char *new_path)
  92 {
  93         g_free(current_path);
  94         current_path = g_strdup(new_path);
  95
  96         screen_file_reload(c);
  97
  98         screen_browser_sync_highlights(browser.filelist, &c->playlist);
  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         if (strcmp(parent, ".") == 0)
 113                 parent[0] = '\0';
 114
 115         char *old_path = current_path;
 116         current_path = NULL;
 117
 118         bool success = change_directory(c, parent);
 119         g_free(parent);
 120
 121         int idx = success
 122                 ? filelist_find_directory(browser.filelist, old_path)
 123                 : -1;
 124         g_free(old_path);
 125
 126         if (success && idx >= 0) {
 127                 /* set the cursor on the previous working directory */
 128                 list_window_set_cursor(browser.lw, idx);
 129                 list_window_center(browser.lw, idx);
 130         }
 131
 132         return success;
 133 }
 134
 135 /**
 136  * Change to the directory referred by the specified #filelist_entry
 137  * object.
 138  */
 139 static bool
 140 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 141 {
 142         assert(entry != NULL);
 143
 144         if (entry->entity == NULL)
 145                 return change_to_parent(c);
 146         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 147                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 148         else
 149                 return false;
 150 }
 151
 152 static bool
 153 screen_file_handle_enter(struct mpdclient *c)
 154 {
 155         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 156
 157         if (entry == NULL)
 158                 return false;
 159
 160         return change_to_entry(c, entry);
 161 }
 162
 163 static void
 164 handle_save(struct mpdclient *c)
 165 {
 166         struct list_window_range range;
 167         const char *defaultname = NULL;
 168
 169         list_window_get_range(browser.lw, &range);
 170         if (range.start == range.end)
 171                 return;
 172
 173         for (unsigned i = range.start; i < range.end; ++i) {
 174                 struct filelist_entry *entry =
 175                         filelist_get(browser.filelist, i);
 176                 if( entry && entry->entity ) {
 177                         struct mpd_entity *entity = entry->entity;
 178                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 179                                 const struct mpd_playlist *playlist =
 180                                         mpd_entity_get_playlist(entity);
 181                                 defaultname = mpd_playlist_get_path(playlist);
 182                         }
 183                 }
 184         }
 185
 186         char *defaultname_utf8 = NULL;
 187         if(defaultname)
 188                 defaultname_utf8 = utf8_to_locale(defaultname);
 189         playlist_save(c, NULL, defaultname_utf8);
 190         g_free(defaultname_utf8);
 191 }
 192
 193 static void
 194 handle_delete(struct mpdclient *c)
 195 {
 196         struct mpd_connection *connection = mpdclient_get_connection(c);
 197
 198         if (connection == NULL)
 199                 return;
 200
 201         struct list_window_range range;
 202         list_window_get_range(browser.lw, &range);
 203         for (unsigned i = range.start; i < range.end; ++i) {
 204                 struct filelist_entry *entry =
 205                         filelist_get(browser.filelist, i);
 206                 if( entry==NULL || entry->entity==NULL )
 207                         continue;
 208
 209                 struct mpd_entity *entity = entry->entity;
 210
 211                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 212                         /* translators: the "delete" command is only possible
 213                            for playlists; the user attempted to delete a song
 214                            or a directory or something else */
 215                         screen_status_printf(_("Deleting this item is not possible"));
 216                         screen_bell();
 217                         continue;
 218                 }
 219
 220                 const struct mpd_playlist *playlist = mpd_entity_get_playlist(entity);
 221                 char *str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 222                 char *buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 223                 g_free(str);
 224                 bool delete = screen_get_yesno(buf, false);
 225                 g_free(buf);
 226
 227                 if (!delete) {
 228                         /* translators: a dialog was aborted by the user */
 229                         screen_status_printf(_("Aborted"));
 230                         return;
 231                 }
 232
 233                 if (!mpd_run_rm(connection, mpd_playlist_get_path(playlist))) {
 234                         mpdclient_handle_error(c);
 235                         break;
 236                 }
 237
 238                 c->events |= MPD_IDLE_STORED_PLAYLIST;
 239
 240                 /* translators: MPD deleted the playlist, as requested by the
 241                    user */
 242                 screen_status_printf(_("Playlist deleted"));
 243         }
 244 }
 245
 246 static void
 247 screen_file_init(WINDOW *w, int cols, int rows)
 248 {
 249         current_path = g_strdup("");
 250
 251         browser.lw = list_window_init(w, cols, rows);
 252 }
 253
 254 static void
 255 screen_file_resize(int cols, int rows)
 256 {
 257         list_window_resize(browser.lw, cols, rows);
 258 }
 259
 260 static void
 261 screen_file_exit(void)
 262 {
 263         if (browser.filelist)
 264                 filelist_free(browser.filelist);
 265         list_window_free(browser.lw);
 266
 267         g_free(current_path);
 268 }
 269
 270 static void
 271 screen_file_open(struct mpdclient *c)
 272 {
 273         screen_file_reload(c);
 274         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 275 }
 276
 277 static const char *
 278 screen_file_get_title(char *str, size_t size)
 279 {
 280         const char *path = NULL, *prev = NULL, *slash = current_path;
 281
 282         /* determine the last 2 parts of the path */
 283         while ((slash = strchr(slash, '/')) != NULL) {
 284                 path = prev;
 285                 prev = ++slash;
 286         }
 287
 288         if (path == NULL)
 289                 /* fall back to full path */
 290                 path = current_path;
 291
 292         char *path_locale = utf8_to_locale(path);
 293         g_snprintf(str, size, "%s: %s",
 294                    /* translators: caption of the browser screen */
 295                    _("Browse"), path_locale);
 296         g_free(path_locale);
 297         return str;
 298 }
 299
 300 static void
 301 screen_file_paint(void)
 302 {
 303         screen_browser_paint(&browser);
 304 }
 305
 306 static void
 307 screen_file_update(struct mpdclient *c)
 308 {
 309         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 310                 /* the db has changed -> update the filelist */
 311                 screen_file_reload(c);
 312         }
 313
 314         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 315 #ifndef NCMPC_MINI
 316                          | MPD_IDLE_QUEUE
 317 #endif
 318                          )) {
 319                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 320                 screen_file_repaint();
 321         }
 322 }
 323
 324 static bool
 325 screen_file_cmd(struct mpdclient *c, command_t cmd)
 326 {
 327         switch(cmd) {
 328         case CMD_PLAY:
 329                 if (screen_file_handle_enter(c)) {
 330                         screen_file_repaint();
 331                         return true;
 332                 }
 333
 334                 break;
 335
 336         case CMD_GO_ROOT_DIRECTORY:
 337                 change_directory(c, "");
 338                 screen_file_repaint();
 339                 return true;
 340         case CMD_GO_PARENT_DIRECTORY:
 341                 change_to_parent(c);
 342                 screen_file_repaint();
 343                 return true;
 344
 345         case CMD_LOCATE:
 346                 /* don't let browser_cmd() evaluate the locate command
 347                    - it's a no-op, and by the way, leads to a
 348                    segmentation fault in the current implementation */
 349                 return false;
 350
 351         case CMD_SCREEN_UPDATE:
 352                 screen_file_reload(c);
 353                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 354                 screen_file_repaint();
 355                 return false;
 356
 357         default:
 358                 break;
 359         }
 360
 361         if (browser_cmd(&browser, c, cmd)) {
 362                 if (screen_is_visible(&screen_browse))
 363                         screen_file_repaint();
 364                 return true;
 365         }
 366
 367         if (!mpdclient_is_connected(c))
 368                 return false;
 369
 370         switch(cmd) {
 371         case CMD_DELETE:
 372                 handle_delete(c);
 373                 screen_file_repaint();
 374                 break;
 375
 376         case CMD_SAVE_PLAYLIST:
 377                 handle_save(c);
 378                 break;
 379
 380         case CMD_DB_UPDATE:
 381                 screen_database_update(c, current_path);
 382                 return true;
 383
 384         default:
 385                 break;
 386         }
 387
 388         return false;
 389 }
 390
 391 const struct screen_functions screen_browse = {
 392         .init = screen_file_init,
 393         .exit = screen_file_exit,
 394         .open = screen_file_open,
 395         .resize = screen_file_resize,
 396         .paint = screen_file_paint,
 397         .update = screen_file_update,
 398         .cmd = screen_file_cmd,
 399         .get_title = screen_file_get_title,
 400 };
 401
 402 bool
 403 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 404 {
 405         const char *uri, *slash, *parent;
 406         char *allocated = NULL;
 407
 408         assert(song != NULL);
 409
 410         uri = mpd_song_get_uri(song);
 411
 412         if (strstr(uri, "//") != NULL)
 413                 /* an URL? */
 414                 return false;
 415
 416         /* determine the song's parent directory and go there */
 417
 418         slash = strrchr(uri, '/');
 419         if (slash != NULL)
 420                 parent = allocated = g_strndup(uri, slash - uri);
 421         else
 422                 parent = "";
 423
 424         bool ret = change_directory(c, parent);
 425         g_free(allocated);
 426         if (!ret)
 427                 return false;
 428
 429         /* select the specified song */
 430
 431         int i = filelist_find_song(browser.filelist, song);
 432         if (i < 0)
 433                 i = 0;
 434
 435         list_window_set_cursor(browser.lw, i);
 436
 437         /* finally, switch to the file screen */
 438         screen_switch(&screen_browse, c);
 439         return true;
 440 }