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 "config.h"
  21 #include "i18n.h"
  22 #include "options.h"
  23 #include "charset.h"
  24 #include "mpdclient.h"
  25 #include "filelist.h"
  26 #include "command.h"
  27 #include "screen.h"
  28 #include "screen_utils.h"
  29 #include "screen_browser.h"
  30 #include "screen_play.h"
  31 #include "screen_client.h"
  32
  33 #include <mpd/client.h>
  34
  35 #include <ctype.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <glib.h>
  39
  40 static struct screen_browser browser;
  41 static char *current_path;
  42
  43 static void
  44 browse_paint(void);
  45
  46 static void
  47 file_repaint(void)
  48 {
  49         browse_paint();
  50         wrefresh(browser.lw->w);
  51 }
  52
  53 static void
  54 file_repaint_if_active(void)
  55 {
  56         if (screen_is_visible(&screen_browse))
  57                 file_repaint();
  58 }
  59
  60 static void
  61 file_reload(struct mpdclient *c)
  62 {
  63         if (browser.filelist != NULL)
  64                 filelist_free(browser.filelist);
  65
  66         browser.filelist = mpdclient_filelist_get(c, current_path);
  67 }
  68
  69 /* the db has changed -> update the filelist */
  70 static void
  71 file_changed_callback(struct mpdclient *c, G_GNUC_UNUSED int event,
  72                       G_GNUC_UNUSED gpointer data)
  73 {
  74         file_reload(c);
  75
  76 #ifndef NCMPC_MINI
  77         sync_highlights(c, browser.filelist);
  78 #endif
  79         list_window_check_selected(browser.lw, filelist_length(browser.filelist));
  80
  81         file_repaint_if_active();
  82 }
  83
  84 #ifndef NCMPC_MINI
  85 /* the playlist has been updated -> fix highlights */
  86 static void
  87 playlist_changed_callback(struct mpdclient *c, int event, gpointer data)
  88 {
  89         browser_playlist_changed(&browser, c, event, data);
  90
  91         file_repaint_if_active();
  92 }
  93 #endif
  94
  95 /**
  96  * Change to the specified absolute directory.
  97  */
  98 static bool
  99 file_change_directory(struct mpdclient *c, const char *new_path)
 100 {
 101         g_free(current_path);
 102         current_path = g_strdup(new_path);
 103
 104         file_reload(c);
 105
 106 #ifndef NCMPC_MINI
 107         sync_highlights(c, browser.filelist);
 108 #endif
 109
 110         list_window_reset(browser.lw);
 111
 112         return browser.filelist != NULL;
 113 }
 114
 115 /**
 116  * Change to the parent directory of the current directory.
 117  */
 118 static bool
 119 file_change_to_parent(struct mpdclient *c)
 120 {
 121         char *parent = g_path_get_dirname(current_path);
 122         char *old_path;
 123         int idx;
 124         bool success;
 125
 126         if (strcmp(parent, ".") == 0)
 127                 parent[0] = '\0';
 128
 129         old_path = current_path;
 130         current_path = NULL;
 131
 132         success = file_change_directory(c, parent);
 133         g_free(parent);
 134
 135         idx = success
 136                 ? filelist_find_directory(browser.filelist, old_path)
 137                 : -1;
 138         g_free(old_path);
 139
 140         if (success && idx >= 0) {
 141                 /* set the cursor on the previous working directory */
 142                 list_window_set_selected(browser.lw, idx);
 143                 list_window_center(browser.lw,
 144                                    filelist_length(browser.filelist), idx);
 145         }
 146
 147         return success;
 148 }
 149
 150 /**
 151  * Change to the directory referred by the specified #filelist_entry
 152  * object.
 153  */
 154 static bool
 155 file_change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 156 {
 157         assert(entry != NULL);
 158
 159         if (entry->entity == NULL)
 160                 return file_change_to_parent(c);
 161         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 162                 return file_change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 163         else
 164                 return false;
 165 }
 166
 167 static bool
 168 file_handle_enter(struct mpdclient *c)
 169 {
 170         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 171
 172         if (entry == NULL)
 173                 return false;
 174
 175         return file_change_to_entry(c, entry);
 176 }
 177
 178 static int
 179 handle_save(struct mpdclient *c)
 180 {
 181         struct filelist_entry *entry;
 182         const char *defaultname = NULL;
 183         char *defaultname_utf8 = NULL;
 184         int ret;
 185         unsigned selected;
 186
 187         if (browser.lw->selected >= filelist_length(browser.filelist))
 188                 return -1;
 189
 190         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 191         {
 192                 entry = filelist_get(browser.filelist, selected);
 193                 if( entry && entry->entity ) {
 194                         struct mpd_entity *entity = entry->entity;
 195                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 196                                 const struct mpd_playlist *playlist =
 197                                         mpd_entity_get_playlist(entity);
 198                                 defaultname = mpd_playlist_get_path(playlist);
 199                         }
 200                 }
 201         }
 202
 203         if(defaultname)
 204                 defaultname_utf8 = utf8_to_locale(defaultname);
 205         ret = playlist_save(c, NULL, defaultname_utf8);
 206         g_free(defaultname_utf8);
 207
 208         return ret;
 209 }
 210
 211 static int
 212 handle_delete(struct mpdclient *c)
 213 {
 214         struct filelist_entry *entry;
 215         struct mpd_entity *entity;
 216         const struct mpd_playlist *playlist;
 217         char *str, *buf;
 218         int key;
 219         unsigned selected;
 220
 221         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 222         {
 223                 if (selected >= filelist_length(browser.filelist))
 224                         return -1;
 225
 226                 entry = filelist_get(browser.filelist, selected);
 227                 if( entry==NULL || entry->entity==NULL )
 228                         continue;
 229
 230                 entity = entry->entity;
 231
 232                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 233                         /* translators: the "delete" command is only possible
 234                            for playlists; the user attempted to delete a song
 235                            or a directory or something else */
 236                         screen_status_printf(_("Deleting this item is not possible"));
 237                         screen_bell();
 238                         continue;
 239                 }
 240
 241                 playlist = mpd_entity_get_playlist(entity);
 242                 str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 243                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 244                 g_free(str);
 245                 key = tolower(screen_getch(screen.status_window.w, buf));
 246                 g_free(buf);
 247                 if( key != YES[0] ) {
 248                         /* translators: a dialog was aborted by the user */
 249                         screen_status_printf(_("Aborted"));
 250                         return 0;
 251                 }
 252
 253                 if (mpdclient_cmd_delete_playlist(c, mpd_playlist_get_path(playlist)))
 254                         continue;
 255
 256                 /* translators: MPD deleted the playlist, as requested by the
 257                    user */
 258                 screen_status_printf(_("Playlist deleted"));
 259         }
 260         return 0;
 261 }
 262
 263 static void
 264 browse_init(WINDOW *w, int cols, int rows)
 265 {
 266         current_path = g_strdup("");
 267
 268         browser.lw = list_window_init(w, cols, rows);
 269 }
 270
 271 static void
 272 browse_resize(int cols, int rows)
 273 {
 274         browser.lw->cols = cols;
 275         browser.lw->rows = rows;
 276 }
 277
 278 static void
 279 browse_exit(void)
 280 {
 281         if (browser.filelist)
 282                 filelist_free(browser.filelist);
 283         list_window_free(browser.lw);
 284
 285         g_free(current_path);
 286 }
 287
 288 static void
 289 browse_open(G_GNUC_UNUSED struct mpdclient *c)
 290 {
 291         if (browser.filelist == NULL) {
 292                 browser.filelist = mpdclient_filelist_get(c, "");
 293 #ifndef NCMPC_MINI
 294                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 295 #endif
 296                 mpdclient_install_browse_callback(c, file_changed_callback);
 297         }
 298 }
 299
 300 static const char *
 301 browse_title(char *str, size_t size)
 302 {
 303         const char *path = NULL, *prev = NULL, *slash = current_path;
 304         char *path_locale;
 305
 306         /* determine the last 2 parts of the path */
 307         while ((slash = strchr(slash, '/')) != NULL) {
 308                 path = prev;
 309                 prev = ++slash;
 310         }
 311
 312         if (path == NULL)
 313                 /* fall back to full path */
 314                 path = current_path;
 315
 316         path_locale = utf8_to_locale(path);
 317         g_snprintf(str, size, "%s: %s",
 318                    /* translators: caption of the browser screen */
 319                    _("Browse"), path_locale);
 320         g_free(path_locale);
 321         return str;
 322 }
 323
 324 static void
 325 browse_paint(void)
 326 {
 327         list_window_paint(browser.lw, browser_lw_callback, browser.filelist);
 328 }
 329
 330 static bool
 331 browse_cmd(struct mpdclient *c, command_t cmd)
 332 {
 333         switch(cmd) {
 334         case CMD_PLAY:
 335                 if (file_handle_enter(c)) {
 336                         file_repaint();
 337                         return true;
 338                 }
 339
 340                 break;
 341
 342         case CMD_GO_ROOT_DIRECTORY:
 343                 file_change_directory(c, "");
 344                 file_repaint();
 345                 return true;
 346         case CMD_GO_PARENT_DIRECTORY:
 347                 file_change_to_parent(c);
 348                 file_repaint();
 349                 return true;
 350
 351         case CMD_LOCATE:
 352                 /* don't let browser_cmd() evaluate the locate command
 353                    - it's a no-op, and by the way, leads to a
 354                    segmentation fault in the current implementation */
 355                 return false;
 356
 357         case CMD_DELETE:
 358                 handle_delete(c);
 359                 file_repaint();
 360                 break;
 361         case CMD_SAVE_PLAYLIST:
 362                 handle_save(c);
 363                 break;
 364         case CMD_SCREEN_UPDATE:
 365                 file_reload(c);
 366 #ifndef NCMPC_MINI
 367                 sync_highlights(c, browser.filelist);
 368 #endif
 369                 list_window_check_selected(browser.lw,
 370                                            filelist_length(browser.filelist));
 371                 file_repaint();
 372                 return false;
 373
 374         case CMD_DB_UPDATE:
 375                 if (c->status == NULL)
 376                         return true;
 377
 378                 screen_database_update(c, current_path);
 379                 return true;
 380
 381         default:
 382                 break;
 383         }
 384
 385         if (browser_cmd(&browser, c, cmd)) {
 386                 if (screen_is_visible(&screen_browse))
 387                         file_repaint();
 388                 return true;
 389         }
 390
 391         return false;
 392 }
 393
 394 const struct screen_functions screen_browse = {
 395         .init = browse_init,
 396         .exit = browse_exit,
 397         .open = browse_open,
 398         .resize = browse_resize,
 399         .paint = browse_paint,
 400         .cmd = browse_cmd,
 401         .get_title = browse_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         bool ret;
 410         int i;
 411
 412         assert(song != NULL);
 413
 414         uri = mpd_song_get_uri(song);
 415
 416         if (strstr(uri, "//") != NULL)
 417                 /* an URL? */
 418                 return false;
 419
 420         /* determine the song's parent directory and go there */
 421
 422         slash = strrchr(uri, '/');
 423         if (slash != NULL)
 424                 parent = allocated = g_strndup(uri, slash - uri);
 425         else
 426                 parent = "";
 427
 428         ret = file_change_directory(c, parent);
 429         g_free(allocated);
 430         if (!ret)
 431                 return false;
 432
 433         /* select the specified song */
 434
 435         i = filelist_find_song(browser.filelist, song);
 436         if (i < 0)
 437                 i = 0;
 438
 439         list_window_set_selected(browser.lw, i);
 440
 441         /* finally, switch to the file screen */
 442         screen_switch(&screen_browse, c);
 443         return true;
 444 }