src/screen_file.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2017 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 #include "options.h"
  34
  35 #include <mpd/client.h>
  36
  37 #include <ctype.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <glib.h>
  41
  42 static struct screen_browser browser;
  43 static char *current_path;
  44
  45 static void
  46 screen_file_paint(void);
  47
  48 static void
  49 screen_file_repaint(void)
  50 {
  51         screen_file_paint();
  52         wrefresh(browser.lw->w);
  53 }
  54
  55 static void
  56 screen_file_load_list(struct mpdclient *c, struct filelist *filelist)
  57 {
  58         struct mpd_connection *connection;
  59
  60         connection = mpdclient_get_connection(c);
  61         if (connection == NULL)
  62                 return;
  63
  64         mpd_send_list_meta(connection, current_path);
  65         filelist_recv(filelist, connection);
  66
  67         if (mpdclient_finish_command(c))
  68                 filelist_sort_dir_play(filelist, compare_filelist_entry_path);
  69 }
  70
  71 static void
  72 screen_file_reload(struct mpdclient *c)
  73 {
  74         if (browser.filelist != NULL)
  75                 filelist_free(browser.filelist);
  76
  77         browser.filelist = filelist_new();
  78         if (*current_path != 0)
  79                 /* add a dummy entry for ./.. */
  80                 filelist_append(browser.filelist, NULL);
  81
  82         screen_file_load_list(c, browser.filelist);
  83
  84         list_window_set_length(browser.lw,
  85                                filelist_length(browser.filelist));
  86 }
  87
  88 /**
  89  * Change to the specified absolute directory.
  90  */
  91 static bool
  92 change_directory(struct mpdclient *c, const char *new_path)
  93 {
  94         g_free(current_path);
  95         current_path = g_strdup(new_path);
  96
  97         screen_file_reload(c);
  98
  99         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 100
 101         list_window_reset(browser.lw);
 102
 103         return browser.filelist != NULL;
 104 }
 105
 106 /**
 107  * Change to the parent directory of the current directory.
 108  */
 109 static bool
 110 change_to_parent(struct mpdclient *c)
 111 {
 112         char *parent = g_path_get_dirname(current_path);
 113         if (strcmp(parent, ".") == 0)
 114                 parent[0] = '\0';
 115
 116         char *old_path = current_path;
 117         current_path = NULL;
 118
 119         bool success = change_directory(c, parent);
 120         g_free(parent);
 121
 122         int idx = success
 123                 ? filelist_find_directory(browser.filelist, old_path)
 124                 : -1;
 125         g_free(old_path);
 126
 127         if (success && idx >= 0) {
 128                 /* set the cursor on the previous working directory */
 129                 list_window_set_cursor(browser.lw, idx);
 130                 list_window_center(browser.lw, idx);
 131         }
 132
 133         return success;
 134 }
 135
 136 /**
 137  * Change to the directory referred by the specified #filelist_entry
 138  * object.
 139  */
 140 static bool
 141 change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 142 {
 143         assert(entry != NULL);
 144
 145         if (entry->entity == NULL)
 146                 return change_to_parent(c);
 147         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 148                 return change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 149         else
 150                 return false;
 151 }
 152
 153 static bool
 154 screen_file_handle_enter(struct mpdclient *c)
 155 {
 156         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 157
 158         if (entry == NULL)
 159                 return false;
 160
 161         return change_to_entry(c, entry);
 162 }
 163
 164 static void
 165 handle_save(struct mpdclient *c)
 166 {
 167         struct list_window_range range;
 168         const char *defaultname = NULL;
 169
 170         list_window_get_range(browser.lw, &range);
 171         if (range.start == range.end)
 172                 return;
 173
 174         for (unsigned i = range.start; i < range.end; ++i) {
 175                 struct filelist_entry *entry =
 176                         filelist_get(browser.filelist, i);
 177                 if( entry && entry->entity ) {
 178                         struct mpd_entity *entity = entry->entity;
 179                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 180                                 const struct mpd_playlist *playlist =
 181                                         mpd_entity_get_playlist(entity);
 182                                 defaultname = mpd_playlist_get_path(playlist);
 183                         }
 184                 }
 185         }
 186
 187         char *defaultname_utf8 = NULL;
 188         if(defaultname)
 189                 defaultname_utf8 = utf8_to_locale(defaultname);
 190         playlist_save(c, NULL, defaultname_utf8);
 191         g_free(defaultname_utf8);
 192 }
 193
 194 static void
 195 handle_delete(struct mpdclient *c)
 196 {
 197         struct mpd_connection *connection = mpdclient_get_connection(c);
 198
 199         if (connection == NULL)
 200                 return;
 201
 202         struct list_window_range range;
 203         list_window_get_range(browser.lw, &range);
 204         for (unsigned i = range.start; i < range.end; ++i) {
 205                 struct filelist_entry *entry =
 206                         filelist_get(browser.filelist, i);
 207                 if( entry==NULL || entry->entity==NULL )
 208                         continue;
 209
 210                 struct mpd_entity *entity = entry->entity;
 211
 212                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 213                         /* translators: the "delete" command is only possible
 214                            for playlists; the user attempted to delete a song
 215                            or a directory or something else */
 216                         screen_status_printf(_("Deleting this item is not possible"));
 217                         screen_bell();
 218                         continue;
 219                 }
 220
 221                 const struct mpd_playlist *playlist = mpd_entity_get_playlist(entity);
 222                 char *str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 223                 char *buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 224                 g_free(str);
 225                 bool delete = screen_get_yesno(buf, false);
 226                 g_free(buf);
 227
 228                 if (!delete) {
 229                         /* translators: a dialog was aborted by the user */
 230                         screen_status_printf(_("Aborted"));
 231                         return;
 232                 }
 233
 234                 if (!mpd_run_rm(connection, mpd_playlist_get_path(playlist))) {
 235                         mpdclient_handle_error(c);
 236                         break;
 237                 }
 238
 239                 c->events |= MPD_IDLE_STORED_PLAYLIST;
 240
 241                 /* translators: MPD deleted the playlist, as requested by the
 242                    user */
 243                 screen_status_printf(_("Playlist deleted"));
 244         }
 245 }
 246
 247 static void
 248 screen_file_init(WINDOW *w, int cols, int rows)
 249 {
 250         current_path = g_strdup("");
 251
 252         browser.lw = list_window_init(w, cols, rows);
 253         browser.song_format = options.list_format;
 254 }
 255
 256 static void
 257 screen_file_resize(int cols, int rows)
 258 {
 259         list_window_resize(browser.lw, cols, rows);
 260 }
 261
 262 static void
 263 screen_file_exit(void)
 264 {
 265         if (browser.filelist)
 266                 filelist_free(browser.filelist);
 267         list_window_free(browser.lw);
 268
 269         g_free(current_path);
 270 }
 271
 272 static void
 273 screen_file_open(struct mpdclient *c)
 274 {
 275         screen_file_reload(c);
 276         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 277 }
 278
 279 static const char *
 280 screen_file_get_title(char *str, size_t size)
 281 {
 282         const char *path = NULL, *prev = NULL, *slash = current_path;
 283
 284         /* determine the last 2 parts of the path */
 285         while ((slash = strchr(slash, '/')) != NULL) {
 286                 path = prev;
 287                 prev = ++slash;
 288         }
 289
 290         if (path == NULL)
 291                 /* fall back to full path */
 292                 path = current_path;
 293
 294         char *path_locale = utf8_to_locale(path);
 295         g_snprintf(str, size, "%s: %s",
 296                    /* translators: caption of the browser screen */
 297                    _("Browse"), path_locale);
 298         g_free(path_locale);
 299         return str;
 300 }
 301
 302 static void
 303 screen_file_paint(void)
 304 {
 305         screen_browser_paint(&browser);
 306 }
 307
 308 static void
 309 screen_file_update(struct mpdclient *c)
 310 {
 311         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST)) {
 312                 /* the db has changed -> update the filelist */
 313                 screen_file_reload(c);
 314         }
 315
 316         if (c->events & (MPD_IDLE_DATABASE | MPD_IDLE_STORED_PLAYLIST
 317 #ifndef NCMPC_MINI
 318                          | MPD_IDLE_QUEUE
 319 #endif
 320                          )) {
 321                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 322                 screen_file_repaint();
 323         }
 324 }
 325
 326 static bool
 327 screen_file_cmd(struct mpdclient *c, command_t cmd)
 328 {
 329         switch(cmd) {
 330         case CMD_PLAY:
 331                 if (screen_file_handle_enter(c)) {
 332                         screen_file_repaint();
 333                         return true;
 334                 }
 335
 336                 break;
 337
 338         case CMD_GO_ROOT_DIRECTORY:
 339                 change_directory(c, "");
 340                 screen_file_repaint();
 341                 return true;
 342         case CMD_GO_PARENT_DIRECTORY:
 343                 change_to_parent(c);
 344                 screen_file_repaint();
 345                 return true;
 346
 347         case CMD_LOCATE:
 348                 /* don't let browser_cmd() evaluate the locate command
 349                    - it's a no-op, and by the way, leads to a
 350                    segmentation fault in the current implementation */
 351                 return false;
 352
 353         case CMD_SCREEN_UPDATE:
 354                 screen_file_reload(c);
 355                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 356                 screen_file_repaint();
 357                 return false;
 358
 359         default:
 360                 break;
 361         }
 362
 363         if (browser_cmd(&browser, c, cmd)) {
 364                 if (screen_is_visible(&screen_browse))
 365                         screen_file_repaint();
 366                 return true;
 367         }
 368
 369         if (!mpdclient_is_connected(c))
 370                 return false;
 371
 372         switch(cmd) {
 373         case CMD_DELETE:
 374                 handle_delete(c);
 375                 screen_file_repaint();
 376                 break;
 377
 378         case CMD_SAVE_PLAYLIST:
 379                 handle_save(c);
 380                 break;
 381
 382         case CMD_DB_UPDATE:
 383                 screen_database_update(c, current_path);
 384                 return true;
 385
 386         default:
 387                 break;
 388         }
 389
 390         return false;
 391 }
 392
 393 const struct screen_functions screen_browse = {
 394         .init = screen_file_init,
 395         .exit = screen_file_exit,
 396         .open = screen_file_open,
 397         .resize = screen_file_resize,
 398         .paint = screen_file_paint,
 399         .update = screen_file_update,
 400         .cmd = screen_file_cmd,
 401         .get_title = screen_file_get_title,
 402 };
 403
 404 bool
 405 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 406 {
 407         const char *uri, *slash, *parent;
 408         char *allocated = NULL;
 409
 410         assert(song != NULL);
 411
 412         uri = mpd_song_get_uri(song);
 413
 414         if (strstr(uri, "//") != NULL)
 415                 /* an URL? */
 416                 return false;
 417
 418         /* determine the song's parent directory and go there */
 419
 420         slash = strrchr(uri, '/');
 421         if (slash != NULL)
 422                 parent = allocated = g_strndup(uri, slash - uri);
 423         else
 424                 parent = "";
 425
 426         bool ret = change_directory(c, parent);
 427         g_free(allocated);
 428         if (!ret)
 429                 return false;
 430
 431         /* select the specified song */
 432
 433         int i = filelist_find_song(browser.filelist, song);
 434         if (i < 0)
 435                 i = 0;
 436
 437         list_window_set_cursor(browser.lw, i);
 438
 439         /* finally, switch to the file screen */
 440         screen_switch(&screen_browse, c);
 441         return true;
 442 }