src/screen_search.c

   1 /*
   2  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  *
  17  */
  18
  19 #include "i18n.h"
  20 #include "options.h"
  21 #include "charset.h"
  22 #include "mpdclient.h"
  23 #include "strfsong.h"
  24 #include "command.h"
  25 #include "screen.h"
  26 #include "utils.h"
  27 #include "screen_utils.h"
  28 #include "screen_browser.h"
  29 #include "gcc.h"
  30
  31 #include <ctype.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34 #include <glib.h>
  35 #include <ncurses.h>
  36
  37 static const struct {
  38         const char *name;
  39         const char *localname;
  40 } search_tag[MPD_TAG_NUM_OF_ITEM_TYPES] = {
  41         [MPD_TAG_ITEM_ARTIST] = { "artist", N_("artist") },
  42         [MPD_TAG_ITEM_ALBUM] = { "album", N_("album") },
  43         [MPD_TAG_ITEM_TITLE] = { "title", N_("title") },
  44         [MPD_TAG_ITEM_TRACK] = { "track", N_("track") },
  45         [MPD_TAG_ITEM_NAME] = { "name", N_("name") },
  46         [MPD_TAG_ITEM_GENRE] = { "genre", N_("genre") },
  47         [MPD_TAG_ITEM_DATE] = { "date", N_("date") },
  48         [MPD_TAG_ITEM_COMPOSER] = { "composer", N_("composer") },
  49         [MPD_TAG_ITEM_PERFORMER] = { "performer", N_("performer") },
  50         [MPD_TAG_ITEM_COMMENT] = { "comment", N_("comment") },
  51         [MPD_TAG_ITEM_FILENAME] = { "filename", N_("file") },
  52 };
  53
  54 static int
  55 search_get_tag_id(char *name)
  56 {
  57         unsigned i;
  58
  59         for (i = 0; i < MPD_TAG_NUM_OF_ITEM_TYPES; ++i)
  60                 if (search_tag[i].name != NULL &&
  61                     (strcasecmp(search_tag[i].name, name) == 0 ||
  62                      strcasecmp(search_tag[i].localname, name) == 0))
  63                         return i;
  64
  65         return -1;
  66 }
  67
  68 #define SEARCH_TITLE    0
  69 #define SEARCH_ARTIST   1
  70 #define SEARCH_ALBUM    2
  71 #define SEARCH_FILE     3
  72
  73 #define SEARCH_ARTIST_TITLE 999
  74
  75 typedef struct {
  76         int table;
  77         const char *label;
  78 } search_type_t;
  79
  80 static search_type_t mode[] = {
  81         { MPD_TABLE_TITLE, N_("Title") },
  82         { MPD_TABLE_ARTIST, N_("Artist") },
  83         { MPD_TABLE_ALBUM, N_("Album") },
  84         { MPD_TABLE_FILENAME, N_("Filename") },
  85         { SEARCH_ARTIST_TITLE, N_("Artist + Title") },
  86         { 0, NULL }
  87 };
  88
  89 static GList *search_history = NULL;
  90 static gchar *pattern = NULL;
  91 static gboolean advanced_search_mode = FALSE;
  92
  93 static struct screen_browser browser;
  94
  95
  96 /* search info */
  97 static const char *
  98 lw_search_help_callback(unsigned idx, mpd_unused int *highlight,
  99                         mpd_unused void *data)
 100 {
 101         unsigned text_rows;
 102         static const char *text[] = {
 103                 "Quick  - just enter a string and ncmpc will search according",
 104                 "               to the current search mode (displayed above).",
 105                 "",
 106                 "Advanced  -  <tag>:<search term> [<tag>:<search term>...]",
 107                 "                       Example: artist:radiohead album:pablo honey",
 108                 "",
 109                 "                  avalible tags: artist, album, title, track,",
 110                 "                  name, genre, date composer, performer, comment, file",
 111                 "",
 112                 NULL
 113         };
 114
 115         text_rows=0;
 116         while (text[text_rows])
 117                 text_rows++;
 118
 119         if (idx < text_rows)
 120                 return text[idx];
 121         return NULL;
 122 }
 123
 124 static void
 125 paint(void);
 126
 127 static void
 128 search_repaint(void)
 129 {
 130         paint();
 131         wrefresh(browser.lw->w);
 132 }
 133
 134 static void
 135 search_repaint_if_active(void)
 136 {
 137         if (screen_is_visible(&screen_search))
 138                 search_repaint();
 139 }
 140
 141 /* the playlist have been updated -> fix highlights */
 142 static void
 143 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
 144 {
 145         browser_playlist_changed(&browser, c, event, data);
 146         search_repaint_if_active();
 147 }
 148
 149 /* sanity check search mode value */
 150 static void
 151 search_check_mode(void)
 152 {
 153         int max = 0;
 154
 155         while (mode[max].label != NULL)
 156                 max++;
 157         if (options.search_mode < 0)
 158                 options.search_mode = 0;
 159         else if (options.search_mode >= max)
 160                 options.search_mode = max-1;
 161 }
 162
 163 static void
 164 search_clear(mpdclient_t *c,
 165              gboolean clear_pattern)
 166 {
 167         if (browser.filelist) {
 168                 mpdclient_remove_playlist_callback(c, playlist_changed_callback);
 169                 filelist_free(browser.filelist);
 170                 browser.filelist = filelist_new(NULL);
 171         }
 172         if (clear_pattern && pattern) {
 173                 g_free(pattern);
 174                 pattern = NULL;
 175         }
 176 }
 177
 178 static mpdclient_filelist_t *
 179 filelist_search(mpdclient_t *c, mpd_unused int exact_match, int table,
 180                 gchar *local_pattern)
 181 {
 182         mpdclient_filelist_t *list, *list2;
 183         gchar *filter_utf8 = locale_to_utf8(local_pattern);
 184
 185         if (table == SEARCH_ARTIST_TITLE) {
 186                 list = mpdclient_filelist_search(c, FALSE, MPD_TABLE_ARTIST,
 187                                                  filter_utf8);
 188                 if (list == NULL)
 189                         list = filelist_new(NULL);
 190
 191                 list2 = mpdclient_filelist_search(c, FALSE, MPD_TABLE_TITLE,
 192                                                   filter_utf8);
 193                 if (list2 != NULL) {
 194                         filelist_move(list, list2);
 195                         filelist_free(list2);
 196                 }
 197
 198                 filelist_sort(list, compare_filelistentry_format);
 199         } else {
 200                 list = mpdclient_filelist_search(c, FALSE, table, filter_utf8);
 201                 if (list == NULL)
 202                         list = filelist_new(NULL);
 203         }
 204
 205         g_free(filter_utf8);
 206         return list;
 207 }
 208
 209 /*-----------------------------------------------------------------------
 210  * NOTE: This code exists to test a new search ui,
 211  *       Its ugly and MUST be redesigned before the next release!
 212  *-----------------------------------------------------------------------
 213  */
 214 static mpdclient_filelist_t *
 215 search_advanced_query(char *query, mpdclient_t *c)
 216 {
 217         int i,j;
 218         char **strv;
 219         int table[10];
 220         char *arg[10];
 221         mpdclient_filelist_t *fl = NULL;
 222
 223         advanced_search_mode = FALSE;
 224         if( g_strrstr(query, ":") == NULL )
 225                 return NULL;
 226
 227         strv = g_strsplit_set(query, ": ", 0);
 228
 229         i=0;
 230         while (strv[i]) {
 231                 i++;
 232         }
 233
 234         memset(table, 0, 10*sizeof(int));
 235         memset(arg, 0, 10*sizeof(char *));
 236
 237         i=0;
 238         j=0;
 239         while (strv[i] && strlen(strv[i]) > 0 && i < 9) {
 240                 int id = search_get_tag_id(strv[i]);
 241                 if (id == -1) {
 242                         if (table[j]) {
 243                                 char *tmp = arg[j];
 244                                 arg[j] = g_strdup_printf("%s %s", arg[j], strv[i]);
 245                                 g_free(tmp);
 246                         } else {
 247                                 screen_status_printf(_("Bad search tag %s"), strv[i]);
 248                         }
 249                         i++;
 250                 } else if (strv[i+1] == NULL || strlen(strv[i+1]) == 0) {
 251                         screen_status_printf(_("No argument for search tag %s"), strv[i]);
 252                         i++;
 253                         //        j--;
 254                         //table[j] = -1;
 255                 } else {
 256                         table[j] = id;
 257                         arg[j] = locale_to_utf8(strv[i+1]); // FREE ME
 258                         j++;
 259                         table[j] = -1;
 260                         arg[j] = NULL;
 261                         i = i + 2;
 262                         advanced_search_mode = TRUE;
 263                 }
 264         }
 265
 266         g_strfreev(strv);
 267
 268
 269         if (advanced_search_mode && j > 0) {
 270                 int iter;
 271                 mpd_InfoEntity *entity;
 272
 273                 /*-----------------------------------------------------------------------
 274                  * NOTE (again): This code exists to test a new search ui,
 275                  *               Its ugly and MUST be redesigned before the next release!
 276                  *             + the code below should live in mpdclient.c
 277                  *-----------------------------------------------------------------------
 278                  */
 279                 /** stupid - but this is just a test...... (fulhack)  */
 280                 mpd_startSearch(c->connection, FALSE);
 281
 282                 for(iter = 0; iter < 10; iter++) {
 283                         mpd_addConstraintSearch(c->connection, table[iter], arg[iter]);
 284                 }
 285
 286                 mpd_commitSearch(c->connection);
 287
 288                 fl = g_malloc0(sizeof(mpdclient_filelist_t));
 289
 290                 while ((entity=mpd_getNextInfoEntity(c->connection)))
 291                         filelist_append(fl, entity);
 292
 293                 if (mpdclient_finish_command(c) && fl)
 294                         filelist_free(fl);
 295         }
 296
 297         i=0;
 298         while( arg[i] )
 299                 g_free(arg[i++]);
 300
 301         return fl;
 302 }
 303
 304 static void
 305 search_new(mpdclient_t *c)
 306 {
 307         search_clear(c, TRUE);
 308
 309         g_free(pattern);
 310         pattern = screen_readln(screen.status_window.w,
 311                                 _("Search: "),
 312                                 NULL,
 313                                 &search_history,
 314                                 NULL);
 315
 316         if (pattern == NULL) {
 317                 list_window_reset(browser.lw);
 318                 return;
 319         }
 320
 321         if (browser.filelist != NULL) {
 322                 filelist_free(browser.filelist);
 323                 browser.filelist = NULL;
 324         }
 325
 326         if (!MPD_VERSION_LT(c, 0, 12, 0))
 327                 browser.filelist = search_advanced_query(pattern, c);
 328
 329         if (!advanced_search_mode && browser.filelist == NULL)
 330                 browser.filelist = filelist_search(c, FALSE,
 331                                                   mode[options.search_mode].table,
 332                                                   pattern);
 333
 334         if (browser.filelist == NULL)
 335                 browser.filelist = filelist_new(NULL);
 336
 337         sync_highlights(c, browser.filelist);
 338         mpdclient_install_playlist_callback(c, playlist_changed_callback);
 339         list_window_check_selected(browser.lw, filelist_length(browser.filelist));
 340 }
 341
 342
 343
 344 static void
 345 init(WINDOW *w, int cols, int rows)
 346 {
 347         browser.lw = list_window_init(w, cols, rows);
 348 }
 349
 350 static void
 351 quit(void)
 352 {
 353         if (search_history)
 354                 string_list_free(search_history);
 355         if (browser.filelist)
 356                 filelist_free(browser.filelist);
 357         list_window_free(browser.lw);
 358
 359         if (pattern) {
 360                 g_free(pattern);
 361                 pattern = NULL;
 362         }
 363 }
 364
 365 static void
 366 open(mpd_unused mpdclient_t *c)
 367 {
 368         //  if( pattern==NULL )
 369         //    search_new(screen, c);
 370         // else
 371         screen_status_printf(_("Press %s for a new search"),
 372                              get_key_names(CMD_SCREEN_SEARCH,0));
 373         search_check_mode();
 374 }
 375
 376 static void
 377 resize(int cols, int rows)
 378 {
 379         browser.lw->cols = cols;
 380         browser.lw->rows = rows;
 381 }
 382
 383 static void
 384 paint(void)
 385 {
 386         if (browser.filelist) {
 387                 browser.lw->flags = 0;
 388                 list_window_paint(browser.lw, browser_lw_callback, browser.filelist);
 389         } else {
 390                 browser.lw->flags = LW_HIDE_CURSOR;
 391                 list_window_paint(browser.lw, lw_search_help_callback, NULL);
 392         }
 393 }
 394
 395 static const char *
 396 get_title(char *str, size_t size)
 397 {
 398         if (advanced_search_mode && pattern)
 399                 g_snprintf(str, size, _("Search: %s"), pattern);
 400         else if (pattern)
 401                 g_snprintf(str, size,
 402                            _("Search: Results for %s [%s]"),
 403                            pattern,
 404                            _(mode[options.search_mode].label));
 405         else
 406                 g_snprintf(str, size, _("Search: Press %s for a new search [%s]"),
 407                            get_key_names(CMD_SCREEN_SEARCH,0),
 408                            _(mode[options.search_mode].label));
 409
 410         return str;
 411 }
 412
 413 static int
 414 search_cmd(mpdclient_t *c, command_t cmd)
 415 {
 416         switch (cmd) {
 417         case CMD_SEARCH_MODE:
 418                 options.search_mode++;
 419                 if (mode[options.search_mode].label == NULL)
 420                         options.search_mode = 0;
 421                 screen_status_printf(_("Search mode: %s"),
 422                                      _(mode[options.search_mode].label));
 423                 /* continue and update... */
 424         case CMD_SCREEN_UPDATE:
 425                 if (pattern) {
 426                         search_clear(c, FALSE);
 427                         browser.filelist = filelist_search(c,
 428                                                           FALSE,
 429                                                           mode[options.search_mode].table,
 430                                                           pattern);
 431                         sync_highlights(c, browser.filelist);
 432                 }
 433                 search_repaint();
 434                 return 1;
 435
 436         case CMD_SCREEN_SEARCH:
 437                 search_new(c);
 438                 search_repaint();
 439                 return 1;
 440
 441         case CMD_CLEAR:
 442                 search_clear(c, TRUE);
 443                 list_window_reset(browser.lw);
 444                 search_repaint();
 445                 return 1;
 446
 447         default:
 448                 break;
 449         }
 450
 451         if (browser.filelist != NULL &&
 452             browser_cmd(&browser, c, cmd)) {
 453                 if (screen_is_visible(&screen_search))
 454                         search_repaint();
 455                 return 1;
 456         }
 457
 458         return 0;
 459 }
 460
 461 const struct screen_functions screen_search = {
 462         .init = init,
 463         .exit = quit,
 464         .open = open,
 465         .resize = resize,
 466         .paint = paint,
 467         .cmd = search_cmd,
 468         .get_title = get_title,
 469 };