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
  32 #include <mpd/client.h>
  33
  34 #include <ctype.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <glib.h>
  38
  39 static struct screen_browser browser;
  40 static char *current_path;
  41
  42 static void
  43 browse_paint(void);
  44
  45 static void
  46 file_repaint(void)
  47 {
  48         browse_paint();
  49         wrefresh(browser.lw->w);
  50 }
  51
  52 static void
  53 file_repaint_if_active(void)
  54 {
  55         if (screen_is_visible(&screen_browse))
  56                 file_repaint();
  57 }
  58
  59 static void
  60 file_reload(struct mpdclient *c)
  61 {
  62         if (browser.filelist != NULL)
  63                 filelist_free(browser.filelist);
  64
  65         browser.filelist = mpdclient_filelist_get(c, current_path);
  66 }
  67
  68 /* the db has changed -> update the filelist */
  69 static void
  70 file_changed_callback(struct mpdclient *c, G_GNUC_UNUSED int event,
  71                       G_GNUC_UNUSED gpointer data)
  72 {
  73         file_reload(c);
  74
  75 #ifndef NCMPC_MINI
  76         sync_highlights(c, browser.filelist);
  77 #endif
  78         list_window_check_selected(browser.lw, filelist_length(browser.filelist));
  79
  80         file_repaint_if_active();
  81 }
  82
  83 #ifndef NCMPC_MINI
  84 /* the playlist has been updated -> fix highlights */
  85 static void
  86 playlist_changed_callback(struct mpdclient *c, int event, gpointer data)
  87 {
  88         browser_playlist_changed(&browser, c, event, data);
  89
  90         file_repaint_if_active();
  91 }
  92 #endif
  93
  94 /**
  95  * Change to the specified absolute directory.
  96  */
  97 static bool
  98 file_change_directory(struct mpdclient *c, const char *new_path)
  99 {
 100         g_free(current_path);
 101         current_path = g_strdup(new_path);
 102
 103         file_reload(c);
 104
 105 #ifndef NCMPC_MINI
 106         sync_highlights(c, browser.filelist);
 107 #endif
 108
 109         list_window_reset(browser.lw);
 110
 111         return browser.filelist != NULL;
 112 }
 113
 114 /**
 115  * Change to the parent directory of the current directory.
 116  */
 117 static bool
 118 file_change_to_parent(struct mpdclient *c)
 119 {
 120         char *parent = g_path_get_dirname(current_path);
 121         char *old_path;
 122         int idx;
 123         bool success;
 124
 125         if (strcmp(parent, ".") == 0)
 126                 parent[0] = '\0';
 127
 128         old_path = current_path;
 129         current_path = NULL;
 130
 131         success = file_change_directory(c, parent);
 132         g_free(parent);
 133
 134         idx = success
 135                 ? filelist_find_directory(browser.filelist, old_path)
 136                 : -1;
 137         g_free(old_path);
 138
 139         if (success && idx >= 0) {
 140                 /* set the cursor on the previous working directory */
 141                 list_window_set_selected(browser.lw, idx);
 142                 list_window_center(browser.lw,
 143                                    filelist_length(browser.filelist), idx);
 144         }
 145
 146         return success;
 147 }
 148
 149 /**
 150  * Change to the directory referred by the specified #filelist_entry
 151  * object.
 152  */
 153 static bool
 154 file_change_to_entry(struct mpdclient *c, const struct filelist_entry *entry)
 155 {
 156         assert(entry != NULL);
 157
 158         if (entry->entity == NULL)
 159                 return file_change_to_parent(c);
 160         else if (mpd_entity_get_type(entry->entity) == MPD_ENTITY_TYPE_DIRECTORY)
 161                 return file_change_directory(c, mpd_directory_get_path(mpd_entity_get_directory(entry->entity)));
 162         else
 163                 return false;
 164 }
 165
 166 static bool
 167 file_handle_enter(struct mpdclient *c)
 168 {
 169         const struct filelist_entry *entry = browser_get_selected_entry(&browser);
 170
 171         if (entry == NULL)
 172                 return false;
 173
 174         return file_change_to_entry(c, entry);
 175 }
 176
 177 static int
 178 handle_save(struct mpdclient *c)
 179 {
 180         struct filelist_entry *entry;
 181         const char *defaultname = NULL;
 182         char *defaultname_utf8 = NULL;
 183         int ret;
 184         unsigned selected;
 185
 186         if (browser.lw->selected >= filelist_length(browser.filelist))
 187                 return -1;
 188
 189         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 190         {
 191                 entry = filelist_get(browser.filelist, selected);
 192                 if( entry && entry->entity ) {
 193                         struct mpd_entity *entity = entry->entity;
 194                         if (mpd_entity_get_type(entity) == MPD_ENTITY_TYPE_PLAYLIST) {
 195                                 const struct mpd_playlist *playlist =
 196                                         mpd_entity_get_playlist(entity);
 197                                 defaultname = mpd_playlist_get_path(playlist);
 198                         }
 199                 }
 200         }
 201
 202         if(defaultname)
 203                 defaultname_utf8 = utf8_to_locale(defaultname);
 204         ret = playlist_save(c, NULL, defaultname_utf8);
 205         g_free(defaultname_utf8);
 206
 207         return ret;
 208 }
 209
 210 static int
 211 handle_delete(struct mpdclient *c)
 212 {
 213         struct filelist_entry *entry;
 214         struct mpd_entity *entity;
 215         const struct mpd_playlist *playlist;
 216         char *str, *buf;
 217         int key;
 218         unsigned selected;
 219
 220         for(selected = browser.lw->selected_start; selected <= browser.lw->selected_end; ++selected)
 221         {
 222                 if (selected >= filelist_length(browser.filelist))
 223                         return -1;
 224
 225                 entry = filelist_get(browser.filelist, selected);
 226                 if( entry==NULL || entry->entity==NULL )
 227                         continue;
 228
 229                 entity = entry->entity;
 230
 231                 if (mpd_entity_get_type(entity) != MPD_ENTITY_TYPE_PLAYLIST) {
 232                         /* translators: the "delete" command is only possible
 233                            for playlists; the user attempted to delete a song
 234                            or a directory or something else */
 235                         screen_status_printf(_("Deleting this item is not possible"));
 236                         screen_bell();
 237                         continue;
 238                 }
 239
 240                 playlist = mpd_entity_get_playlist(entity);
 241                 str = utf8_to_locale(g_basename(mpd_playlist_get_path(playlist)));
 242                 buf = g_strdup_printf(_("Delete playlist %s [%s/%s] ? "), str, YES, NO);
 243                 g_free(str);
 244                 key = tolower(screen_getch(screen.status_window.w, buf));
 245                 g_free(buf);
 246                 if( key != YES[0] ) {
 247                         /* translators: a dialog was aborted by the user */
 248                         screen_status_printf(_("Aborted"));
 249                         return 0;
 250                 }
 251
 252                 if (mpdclient_cmd_delete_playlist(c, mpd_playlist_get_path(playlist)))
 253                         continue;
 254
 255                 /* translators: MPD deleted the playlist, as requested by the
 256                    user */
 257                 screen_status_printf(_("Playlist deleted"));
 258         }
 259         return 0;
 260 }
 261
 262 static void
 263 browse_init(WINDOW *w, int cols, int rows)
 264 {
 265         current_path = g_strdup("");
 266
 267         browser.lw = list_window_init(w, cols, rows);
 268 }
 269
 270 static void
 271 browse_resize(int cols, int rows)
 272 {
 273         browser.lw->cols = cols;
 274         browser.lw->rows = rows;
 275 }
 276
 277 static void
 278 browse_exit(void)
 279 {
 280         if (browser.filelist)
 281                 filelist_free(browser.filelist);
 282         list_window_free(browser.lw);
 283
 284         g_free(current_path);
 285 }
 286
 287 static void
 288 browse_open(G_GNUC_UNUSED struct mpdclient *c)
 289 {
 290         if (browser.filelist == NULL) {
 291                 browser.filelist = mpdclient_filelist_get(c, "");
 292 #ifndef NCMPC_MINI
 293                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 294 #endif
 295                 mpdclient_install_browse_callback(c, file_changed_callback);
 296         }
 297 }
 298
 299 static const char *
 300 browse_title(char *str, size_t size)
 301 {
 302         const char *path = NULL, *prev = NULL, *slash = current_path;
 303         char *path_locale;
 304
 305         /* determine the last 2 parts of the path */
 306         while ((slash = strchr(slash, '/')) != NULL) {
 307                 path = prev;
 308                 prev = ++slash;
 309         }
 310
 311         if (path == NULL)
 312                 /* fall back to full path */
 313                 path = current_path;
 314
 315         path_locale = utf8_to_locale(path);
 316         g_snprintf(str, size, "%s: %s",
 317                    /* translators: caption of the browser screen */
 318                    _("Browse"), path_locale);
 319         g_free(path_locale);
 320         return str;
 321 }
 322
 323 static void
 324 browse_paint(void)
 325 {
 326         list_window_paint(browser.lw, browser_lw_callback, browser.filelist);
 327 }
 328
 329 static bool
 330 browse_cmd(struct mpdclient *c, command_t cmd)
 331 {
 332         switch(cmd) {
 333         case CMD_PLAY:
 334                 if (file_handle_enter(c)) {
 335                         file_repaint();
 336                         return true;
 337                 }
 338
 339                 break;
 340
 341         case CMD_GO_ROOT_DIRECTORY:
 342                 file_change_directory(c, "");
 343                 file_repaint();
 344                 return true;
 345         case CMD_GO_PARENT_DIRECTORY:
 346                 file_change_to_parent(c);
 347                 file_repaint();
 348                 return true;
 349
 350         case CMD_LOCATE:
 351                 /* don't let browser_cmd() evaluate the locate command
 352                    - it's a no-op, and by the way, leads to a
 353                    segmentation fault in the current implementation */
 354                 return false;
 355
 356         case CMD_DELETE:
 357                 handle_delete(c);
 358                 file_repaint();
 359                 break;
 360         case CMD_SAVE_PLAYLIST:
 361                 handle_save(c);
 362                 break;
 363         case CMD_SCREEN_UPDATE:
 364                 file_reload(c);
 365 #ifndef NCMPC_MINI
 366                 sync_highlights(c, browser.filelist);
 367 #endif
 368                 list_window_check_selected(browser.lw,
 369                                            filelist_length(browser.filelist));
 370                 file_repaint();
 371                 return false;
 372
 373         case CMD_DB_UPDATE:
 374                 if (c->status == NULL)
 375                         return true;
 376
 377                 if (mpd_status_get_update_id(c->status) == 0) {
 378                         if (mpdclient_cmd_db_update(c, current_path) == 0) {
 379                                 if (strcmp(current_path, "")) {
 380                                         char *path_locale =
 381                                                 utf8_to_locale(current_path);
 382                                         screen_status_printf(_("Database update of %s started"),
 383                                                              path_locale);
 384                                         g_free(path_locale);
 385                                 } else
 386                                         screen_status_printf(_("Database update started"));
 387                         }
 388                 } else
 389                         screen_status_printf(_("Database update running..."));
 390                 return true;
 391
 392         default:
 393                 break;
 394         }
 395
 396         if (browser_cmd(&browser, c, cmd)) {
 397                 if (screen_is_visible(&screen_browse))
 398                         file_repaint();
 399                 return true;
 400         }
 401
 402         return false;
 403 }
 404
 405 const struct screen_functions screen_browse = {
 406         .init = browse_init,
 407         .exit = browse_exit,
 408         .open = browse_open,
 409         .resize = browse_resize,
 410         .paint = browse_paint,
 411         .cmd = browse_cmd,
 412         .get_title = browse_title,
 413 };
 414
 415 bool
 416 screen_file_goto_song(struct mpdclient *c, const struct mpd_song *song)
 417 {
 418         const char *uri, *slash, *parent;
 419         char *allocated = NULL;
 420         bool ret;
 421         int i;
 422
 423         assert(song != NULL);
 424
 425         uri = mpd_song_get_uri(song);
 426
 427         if (strstr(uri, "//") != NULL)
 428                 /* an URL? */
 429                 return false;
 430
 431         /* determine the song's parent directory and go there */
 432
 433         slash = strrchr(uri, '/');
 434         if (slash != NULL)
 435                 parent = allocated = g_strndup(uri, slash - uri);
 436         else
 437                 parent = "";
 438
 439         ret = file_change_directory(c, parent);
 440         g_free(allocated);
 441         if (!ret)
 442                 return false;
 443
 444         /* select the specified song */
 445
 446         i = filelist_find_song(browser.filelist, song);
 447         if (i < 0)
 448                 i = 0;
 449
 450         list_window_set_selected(browser.lw, i);
 451
 452         /* finally, switch to the file screen */
 453         screen_switch(&screen_browse, c);
 454         return true;
 455 }