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