src/screen_search.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_search.h"
  21 #include "screen_interface.h"
  22 #include "screen_status.h"
  23 #include "screen.h"
  24 #include "i18n.h"
  25 #include "options.h"
  26 #include "charset.h"
  27 #include "mpdclient.h"
  28 #include "strfsong.h"
  29 #include "utils.h"
  30 #include "screen_utils.h"
  31 #include "screen_browser.h"
  32 #include "filelist.h"
  33
  34 #include <string.h>
  35 #include <glib.h>
  36
  37 enum {
  38         SEARCH_URI = MPD_TAG_COUNT + 100,
  39         SEARCH_ARTIST_TITLE
  40 };
  41
  42 static const struct {
  43         const char *name;
  44         const char *localname;
  45 } search_tag[MPD_TAG_COUNT] = {
  46         [MPD_TAG_ARTIST] = { "artist", N_("artist") },
  47         [MPD_TAG_ALBUM] = { "album", N_("album") },
  48         [MPD_TAG_TITLE] = { "title", N_("title") },
  49         [MPD_TAG_TRACK] = { "track", N_("track") },
  50         [MPD_TAG_NAME] = { "name", N_("name") },
  51         [MPD_TAG_GENRE] = { "genre", N_("genre") },
  52         [MPD_TAG_DATE] = { "date", N_("date") },
  53         [MPD_TAG_COMPOSER] = { "composer", N_("composer") },
  54         [MPD_TAG_PERFORMER] = { "performer", N_("performer") },
  55         [MPD_TAG_COMMENT] = { "comment", N_("comment") },
  56 };
  57
  58 static int
  59 search_get_tag_id(const char *name)
  60 {
  61         unsigned i;
  62
  63         if (g_ascii_strcasecmp(name, "file") == 0 ||
  64             strcasecmp(name, _("file")) == 0)
  65                 return SEARCH_URI;
  66
  67         for (i = 0; i < MPD_TAG_COUNT; ++i)
  68                 if (search_tag[i].name != NULL &&
  69                     (strcasecmp(search_tag[i].name, name) == 0 ||
  70                      strcasecmp(search_tag[i].localname, name) == 0))
  71                         return i;
  72
  73         return -1;
  74 }
  75
  76 typedef struct {
  77         enum mpd_tag_type table;
  78         const char *label;
  79 } search_type_t;
  80
  81 static search_type_t mode[] = {
  82         { MPD_TAG_TITLE, N_("Title") },
  83         { MPD_TAG_ARTIST, N_("Artist") },
  84         { MPD_TAG_ALBUM, N_("Album") },
  85         { SEARCH_URI, N_("Filename") },
  86         { SEARCH_ARTIST_TITLE, N_("Artist + Title") },
  87         { 0, NULL }
  88 };
  89
  90 static GList *search_history = NULL;
  91 static gchar *pattern = NULL;
  92 static gboolean advanced_search_mode = FALSE;
  93
  94 static struct screen_browser browser;
  95
  96 static const char *const help_text[] = {
  97         "Quick     -  Enter a string and ncmpc will search according",
  98         "             to the current search mode (displayed above).",
  99         "",
 100         "Advanced  -  <tag>:<search term> [<tag>:<search term>...]",
 101         "               Example: artist:radiohead album:pablo honey",
 102         "",
 103         "               Available tags: artist, album, title, track,",
 104         "               name, genre, date composer, performer, comment, file",
 105         "",
 106 };
 107
 108 /* search info */
 109 static const char *
 110 lw_search_help_callback(unsigned idx, G_GNUC_UNUSED void *data)
 111 {
 112         assert(idx < G_N_ELEMENTS(help_text));
 113
 114         return help_text[idx];
 115 }
 116
 117 static void
 118 screen_search_paint(void);
 119
 120 static void
 121 search_repaint(void)
 122 {
 123         screen_search_paint();
 124         wrefresh(browser.lw->w);
 125 }
 126
 127 /* sanity check search mode value */
 128 static void
 129 search_check_mode(void)
 130 {
 131         int max = 0;
 132
 133         while (mode[max].label != NULL)
 134                 max++;
 135         if (options.search_mode < 0)
 136                 options.search_mode = 0;
 137         else if (options.search_mode >= max)
 138                 options.search_mode = max-1;
 139 }
 140
 141 static void
 142 search_clear(bool clear_pattern)
 143 {
 144         if (browser.filelist) {
 145                 filelist_free(browser.filelist);
 146                 browser.filelist = filelist_new();
 147                 list_window_set_length(browser.lw, 0);
 148         }
 149         if (clear_pattern && pattern) {
 150                 g_free(pattern);
 151                 pattern = NULL;
 152         }
 153 }
 154
 155 static struct filelist *
 156 search_simple_query(struct mpd_connection *connection, bool exact_match,
 157                     int table, gchar *local_pattern)
 158 {
 159         struct filelist *list;
 160         gchar *filter_utf8 = locale_to_utf8(local_pattern);
 161
 162         if (table == SEARCH_ARTIST_TITLE) {
 163                 mpd_command_list_begin(connection, false);
 164
 165                 mpd_search_db_songs(connection, exact_match);
 166                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 167                                               MPD_TAG_ARTIST, filter_utf8);
 168                 mpd_search_commit(connection);
 169
 170                 mpd_search_db_songs(connection, exact_match);
 171                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 172                                               MPD_TAG_TITLE, filter_utf8);
 173                 mpd_search_commit(connection);
 174
 175                 mpd_command_list_end(connection);
 176
 177                 list = filelist_new_recv(connection);
 178                 filelist_no_duplicates(list);
 179         } else if (table == SEARCH_URI) {
 180                 mpd_search_db_songs(connection, exact_match);
 181                 mpd_search_add_uri_constraint(connection, MPD_OPERATOR_DEFAULT,
 182                                               filter_utf8);
 183                 mpd_search_commit(connection);
 184
 185                 list = filelist_new_recv(connection);
 186         } else {
 187                 mpd_search_db_songs(connection, exact_match);
 188                 mpd_search_add_tag_constraint(connection, MPD_OPERATOR_DEFAULT,
 189                                               table, filter_utf8);
 190                 mpd_search_commit(connection);
 191
 192                 list = filelist_new_recv(connection);
 193         }
 194
 195         g_free(filter_utf8);
 196         return list;
 197 }
 198
 199 /*-----------------------------------------------------------------------
 200  * NOTE: This code exists to test a new search ui,
 201  *       Its ugly and MUST be redesigned before the next release!
 202  *-----------------------------------------------------------------------
 203  */
 204 static struct filelist *
 205 search_advanced_query(struct mpd_connection *connection, char *query)
 206 {
 207         int i,j;
 208         char **strv;
 209         int table[10];
 210         char *arg[10];
 211         struct filelist *fl = NULL;
 212
 213         advanced_search_mode = FALSE;
 214         if (strchr(query, ':') == NULL)
 215                 return NULL;
 216
 217         strv = g_strsplit_set(query, ": ", 0);
 218
 219         memset(table, 0, 10*sizeof(int));
 220         memset(arg, 0, 10*sizeof(char *));
 221
 222         i=0;
 223         j=0;
 224         while (strv[i] && strlen(strv[i]) > 0 && i < 9) {
 225                 int id = search_get_tag_id(strv[i]);
 226                 if (id == -1) {
 227                         if (table[j]) {
 228                                 char *tmp = arg[j];
 229                                 arg[j] = g_strdup_printf("%s %s", arg[j], strv[i]);
 230                                 g_free(tmp);
 231                         } else {
 232                                 screen_status_printf(_("Bad search tag %s"), strv[i]);
 233                         }
 234                         i++;
 235                 } else if (strv[i+1] == NULL || strlen(strv[i+1]) == 0) {
 236                         screen_status_printf(_("No argument for search tag %s"), strv[i]);
 237                         i++;
 238                         //        j--;
 239                         //table[j] = -1;
 240                 } else {
 241                         table[j] = id;
 242                         arg[j] = locale_to_utf8(strv[i+1]); // FREE ME
 243                         j++;
 244                         table[j] = -1;
 245                         arg[j] = NULL;
 246                         i = i + 2;
 247                         advanced_search_mode = TRUE;
 248                 }
 249         }
 250
 251         g_strfreev(strv);
 252
 253         if (!advanced_search_mode || j == 0) {
 254                 for (i = 0; arg[i] != NULL; ++i)
 255                         g_free(arg[i]);
 256                 return NULL;
 257         }
 258
 259         /*-----------------------------------------------------------------------
 260          * NOTE (again): This code exists to test a new search ui,
 261          *               Its ugly and MUST be redesigned before the next release!
 262          *             + the code below should live in mpdclient.c
 263          *-----------------------------------------------------------------------
 264          */
 265         /** stupid - but this is just a test...... (fulhack)  */
 266         mpd_search_db_songs(connection, false);
 267
 268         for (i = 0; i < 10 && arg[i] != NULL; i++) {
 269                 if (table[i] == SEARCH_URI)
 270                         mpd_search_add_uri_constraint(connection,
 271                                                       MPD_OPERATOR_DEFAULT,
 272                                                       arg[i]);
 273                 else
 274                         mpd_search_add_tag_constraint(connection,
 275                                                       MPD_OPERATOR_DEFAULT,
 276                                                       table[i], arg[i]);
 277         }
 278
 279         mpd_search_commit(connection);
 280         fl = filelist_new_recv(connection);
 281         if (!mpd_response_finish(connection)) {
 282                 filelist_free(fl);
 283                 fl = NULL;
 284         }
 285
 286         for (i = 0; arg[i] != NULL; ++i)
 287                 g_free(arg[i]);
 288
 289         return fl;
 290 }
 291
 292 static struct filelist *
 293 do_search(struct mpdclient *c, char *query)
 294 {
 295         struct mpd_connection *connection = mpdclient_get_connection(c);
 296         if (connection == NULL)
 297                 return NULL;
 298
 299         struct filelist *fl = search_advanced_query(connection, query);
 300         if (fl != NULL)
 301                 return fl;
 302
 303         if (mpd_connection_get_error(connection) != MPD_ERROR_SUCCESS) {
 304                 mpdclient_handle_error(c);
 305                 return NULL;
 306         }
 307
 308         fl = search_simple_query(connection, FALSE,
 309                                  mode[options.search_mode].table,
 310                                  query);
 311         if (fl == NULL)
 312                 mpdclient_handle_error(c);
 313         return fl;
 314 }
 315
 316 static void
 317 screen_search_reload(struct mpdclient *c)
 318 {
 319         if (pattern == NULL)
 320                 return;
 321
 322         if (browser.filelist != NULL) {
 323                 filelist_free(browser.filelist);
 324                 browser.filelist = NULL;
 325         }
 326
 327         browser.filelist = do_search(c, pattern);
 328         if (browser.filelist == NULL)
 329                 browser.filelist = filelist_new();
 330         list_window_set_length(browser.lw, filelist_length(browser.filelist));
 331
 332         screen_browser_sync_highlights(browser.filelist, &c->playlist);
 333 }
 334
 335 static void
 336 search_new(struct mpdclient *c)
 337 {
 338         if (!mpdclient_is_connected(c))
 339                 return;
 340
 341         search_clear(true);
 342
 343         g_free(pattern);
 344         pattern = screen_readln(_("Search"),
 345                                 NULL,
 346                                 &search_history,
 347                                 NULL);
 348
 349         if (pattern == NULL) {
 350                 list_window_reset(browser.lw);
 351                 return;
 352         }
 353
 354         screen_search_reload(c);
 355 }
 356
 357 static void
 358 screen_search_init(WINDOW *w, int cols, int rows)
 359 {
 360         browser.lw = list_window_init(w, cols, rows);
 361         list_window_set_length(browser.lw, G_N_ELEMENTS(help_text));
 362 }
 363
 364 static void
 365 screen_search_quit(void)
 366 {
 367         if (search_history)
 368                 string_list_free(search_history);
 369         if (browser.filelist)
 370                 filelist_free(browser.filelist);
 371         list_window_free(browser.lw);
 372
 373         if (pattern) {
 374                 g_free(pattern);
 375                 pattern = NULL;
 376         }
 377 }
 378
 379 static void
 380 screen_search_open(G_GNUC_UNUSED struct mpdclient *c)
 381 {
 382         //  if( pattern==NULL )
 383         //    search_new(screen, c);
 384         // else
 385         screen_status_printf(_("Press %s for a new search"),
 386                              get_key_names(CMD_SCREEN_SEARCH, false));
 387         search_check_mode();
 388 }
 389
 390 static void
 391 screen_search_resize(int cols, int rows)
 392 {
 393         list_window_resize(browser.lw, cols, rows);
 394 }
 395
 396 static void
 397 screen_search_paint(void)
 398 {
 399         if (browser.filelist) {
 400                 browser.lw->hide_cursor = false;
 401                 screen_browser_paint(&browser);
 402         } else {
 403                 browser.lw->hide_cursor = true;
 404                 list_window_paint(browser.lw, lw_search_help_callback, NULL);
 405         }
 406 }
 407
 408 static const char *
 409 screen_search_get_title(char *str, size_t size)
 410 {
 411         if (advanced_search_mode && pattern)
 412                 g_snprintf(str, size, _("Search: %s"), pattern);
 413         else if (pattern)
 414                 g_snprintf(str, size,
 415                            _("Search: Results for %s [%s]"),
 416                            pattern,
 417                            _(mode[options.search_mode].label));
 418         else
 419                 g_snprintf(str, size, _("Search: Press %s for a new search [%s]"),
 420                            get_key_names(CMD_SCREEN_SEARCH, false),
 421                            _(mode[options.search_mode].label));
 422
 423         return str;
 424 }
 425
 426 static void
 427 screen_search_update(struct mpdclient *c)
 428 {
 429         if (browser.filelist != NULL && c->events & MPD_IDLE_QUEUE) {
 430                 screen_browser_sync_highlights(browser.filelist, &c->playlist);
 431                 search_repaint();
 432         }
 433 }
 434
 435 static bool
 436 screen_search_cmd(struct mpdclient *c, command_t cmd)
 437 {
 438         switch (cmd) {
 439         case CMD_SEARCH_MODE:
 440                 options.search_mode++;
 441                 if (mode[options.search_mode].label == NULL)
 442                         options.search_mode = 0;
 443                 screen_status_printf(_("Search mode: %s"),
 444                                      _(mode[options.search_mode].label));
 445                 /* continue and update... */
 446         case CMD_SCREEN_UPDATE:
 447                 screen_search_reload(c);
 448                 search_repaint();
 449                 return true;
 450
 451         case CMD_SCREEN_SEARCH:
 452                 search_new(c);
 453                 search_repaint();
 454                 return true;
 455
 456         case CMD_CLEAR:
 457                 search_clear(true);
 458                 list_window_reset(browser.lw);
 459                 search_repaint();
 460                 return true;
 461
 462         default:
 463                 break;
 464         }
 465
 466         if (browser.filelist != NULL &&
 467             browser_cmd(&browser, c, cmd)) {
 468                 if (screen_is_visible(&screen_search))
 469                         search_repaint();
 470                 return true;
 471         }
 472
 473         return false;
 474 }
 475
 476 const struct screen_functions screen_search = {
 477         .init = screen_search_init,
 478         .exit = screen_search_quit,
 479         .open = screen_search_open,
 480         .resize = screen_search_resize,
 481         .paint = screen_search_paint,
 482         .update = screen_search_update,
 483         .cmd = screen_search_cmd,
 484         .get_title = screen_search_get_title,
 485 };