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center cursor directly in Menu class
[ncmpcpp.git] / src / search_engine.cpp
blobfadad454ee8a8f5067a0e5654e352595f76f7ea4
1 /***************************************************************************
2 * Copyright (C) 2008-2010 by Andrzej Rybczak *
3 * electricityispower@gmail.com *
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 *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
20
21 #include <iomanip>
22
23 #include "display.h"
24 #include "global.h"
25 #include "helpers.h"
26 #include "playlist.h"
27 #include "search_engine.h"
28 #include "settings.h"
29 #include "status.h"
30
31 using Global::MainHeight;
32 using Global::MainStartY;
33
34 SearchEngine *mySearcher = new SearchEngine;
35
36 const char *SearchEngine::ConstraintsNames[] =
37 {
38 "Any:",
39 "Artist:",
40 "Title:",
41 "Album:",
42 "Filename:",
43 "Composer:",
44 "Performer:",
45 "Genre:",
46 "Year:",
47 "Comment:"
48 };
49
50 const char *SearchEngine::SearchModes[] =
51 {
52 "Match if tag contains searched phrase (no regexes)",
53 "Match if tag contains searched phrase (regexes supported)",
54 "Match only if both values are the same",
55 0
56 };
57
58 size_t SearchEngine::StaticOptions = 19;
59 size_t SearchEngine::ResetButton = 15;
60 size_t SearchEngine::SearchButton = 14;
61
62 void SearchEngine::Init()
63 {
64 w = new Menu< std::pair<Buffer *, MPD::Song *> >(0, MainStartY, COLS, MainHeight, "", Config.main_color, brNone);
65 w->HighlightColor(Config.main_highlight_color);
66 w->CyclicScrolling(Config.use_cyclic_scrolling);
67 w->CenteredCursor(Config.centered_cursor);
68 w->SetItemDisplayer(Display::SearchEngine);
69 w->SetSelectPrefix(&Config.selected_item_prefix);
70 w->SetSelectSuffix(&Config.selected_item_suffix);
71 w->SetGetStringFunction(SearchEngineOptionToString);
72 SearchMode = &SearchModes[Config.search_engine_default_search_mode];
73 isInitialized = 1;
74 }
75
76 void SearchEngine::Resize()
77 {
78 w->Resize(COLS, MainHeight);
79 w->MoveTo(0, MainStartY);
80 hasToBeResized = 0;
81 }
82
83 void SearchEngine::SwitchTo()
84 {
85 using Global::myScreen;
86
87 if (myScreen == this)
88 {
89 Reset();
90 return;
91 }
92
93 if (!isInitialized)
94 Init();
95
96 if (hasToBeResized)
97 Resize();
98
99 if (w->Empty())
100 Prepare();
101
102 if (myScreen != this && myScreen->isTabbable())
103 Global::myPrevScreen = myScreen;
104 myScreen = this;
105 Global::RedrawHeader = 1;
106
107 if (!w->Back().first)
108 {
109 *w << XY(0, 0) << "Updating list...";
110 UpdateFoundList();
111 }
112 }
113
114 std::basic_string<my_char_t> SearchEngine::Title()
115 {
116 return U("Search engine");
117 }
118
119 void SearchEngine::EnterPressed()
120 {
121 size_t option = w->Choice();
122 if (option > ConstraintsNumber && option < SearchButton)
123 w->Current().first->Clear();
124 if (option < SearchButton)
125 LockStatusbar();
126
127 if (option < ConstraintsNumber)
128 {
129 Statusbar() << fmtBold << ConstraintsNames[option] << fmtBoldEnd << ' ';
130 itsConstraints[option] = Global::wFooter->GetString(itsConstraints[option]);
131 w->Current().first->Clear();
132 *w->Current().first << fmtBold << std::setw(10) << std::left << ConstraintsNames[option] << fmtBoldEnd << ' ';
133 ShowTag(*w->Current().first, itsConstraints[option]);
134 }
135 else if (option == ConstraintsNumber+1)
136 {
137 Config.search_in_db = !Config.search_in_db;
138 *w->Current().first << fmtBold << "Search in:" << fmtBoldEnd << ' ' << (Config.search_in_db ? "Database" : "Current playlist");
139 }
140 else if (option == ConstraintsNumber+2)
141 {
142 if (!*++SearchMode)
143 SearchMode = &SearchModes[0];
144 *w->Current().first << fmtBold << "Search mode:" << fmtBoldEnd << ' ' << *SearchMode;
145 }
146 else if (option == SearchButton)
147 {
148 ShowMessage("Searching...");
149 if (w->Size() > StaticOptions)
150 Prepare();
151 Search();
152 if (!w->Back().first)
153 {
154 if (Config.columns_in_search_engine)
155 w->SetTitle(Display::Columns());
156 size_t found = w->Size()-SearchEngine::StaticOptions;
157 found += 3; // don't count options inserted below
158 w->InsertSeparator(ResetButton+1);
159 w->InsertOption(ResetButton+2, std::make_pair(static_cast<Buffer *>(0), static_cast<MPD::Song *>(0)), 1, 1);
160 w->at(ResetButton+2).first = new Buffer();
161 *w->at(ResetButton+2).first << Config.color1 << "Search results: " << Config.color2 << "Found " << found << (found > 1 ? " songs" : " song") << clDefault;
162 w->InsertSeparator(ResetButton+3);
163 UpdateFoundList();
164 ShowMessage("Searching finished!");
165 if (Config.block_search_constraints_change)
166 for (size_t i = 0; i < StaticOptions-4; ++i)
167 w->Static(i, 1);
168 w->Scroll(wDown);
169 w->Scroll(wDown);
170 }
171 else
172 ShowMessage("No results found");
173 }
174 else if (option == ResetButton)
175 {
176 Reset();
177 }
178 else
179 w->Bold(w->Choice(), myPlaylist->Add(*w->Current().second, w->isBold(), 1));
180
181 if (option < SearchButton)
182 UnlockStatusbar();
183 }
184
185 void SearchEngine::SpacePressed()
186 {
187 if (w->Current().first)
188 return;
189
190 if (Config.space_selects)
191 {
192 w->Select(w->Choice(), !w->isSelected());
193 w->Scroll(wDown);
194 return;
195 }
196
197 w->Bold(w->Choice(), myPlaylist->Add(*w->Current().second, w->isBold(), 0));
198 w->Scroll(wDown);
199 }
200
201 void SearchEngine::MouseButtonPressed(MEVENT me)
202 {
203 if (w->Empty() || !w->hasCoords(me.x, me.y) || size_t(me.y) >= w->Size())
204 return;
205 if (me.bstate & (BUTTON1_PRESSED | BUTTON3_PRESSED))
206 {
207 if (!w->Goto(me.y))
208 return;
209 w->Refresh();
210 if ((me.bstate & BUTTON3_PRESSED || w->Choice() > ConstraintsNumber) && w->Choice() < StaticOptions)
211 EnterPressed();
212 else if (w->Choice() >= StaticOptions)
213 {
214 if (me.bstate & BUTTON1_PRESSED)
215 {
216 size_t pos = w->Choice();
217 SpacePressed();
218 if (pos < w->Size()-1)
219 w->Scroll(wUp);
220 }
221 else
222 EnterPressed();
223 }
224 }
225 else
226 Screen< Menu< std::pair<Buffer *, MPD::Song *> > >::MouseButtonPressed(me);
227 }
228
229 MPD::Song *SearchEngine::CurrentSong()
230 {
231 return !w->Empty() ? w->Current().second : 0;
232 }
233
234 void SearchEngine::GetSelectedSongs(MPD::SongList &v)
235 {
236 std::vector<size_t> selected;
237 w->GetSelected(selected);
238 if (selected.empty() && w->Choice() >= StaticOptions)
239 selected.push_back(w->Choice());
240 for (std::vector<size_t>::const_iterator it = selected.begin(); it != selected.end(); ++it)
241 v.push_back(new MPD::Song(*w->at(*it).second));
242 }
243
244 void SearchEngine::ApplyFilter(const std::string &s)
245 {
246 w->ApplyFilter(s, StaticOptions, REG_ICASE | Config.regex_type);
247 }
248
249 void SearchEngine::UpdateFoundList()
250 {
251 bool bold = 0;
252 for (size_t i = StaticOptions; i < w->Size(); ++i)
253 {
254 for (size_t j = 0; j < myPlaylist->Items->Size(); ++j)
255 {
256 if (myPlaylist->Items->at(j).GetHash() == w->at(i).second->GetHash())
257 {
258 bold = 1;
259 break;
260 }
261 }
262 w->Bold(i, bold);
263 bold = 0;
264 }
265 }
266
267 void SearchEngine::Prepare()
268 {
269 for (size_t i = 0; i < w->Size(); ++i)
270 {
271 if (i == ConstraintsNumber || i == SearchButton-1 || i == ResetButton+1 || i == ResetButton+3) // separators
272 continue;
273 delete (*w)[i].first;
274 delete (*w)[i].second;
275 }
276
277 w->SetTitle("");
278 w->Clear();
279 w->ResizeList(StaticOptions-3);
280
281 w->IntoSeparator(ConstraintsNumber);
282 w->IntoSeparator(SearchButton-1);
283
284 for (size_t i = 0; i < StaticOptions-3; ++i)
285 {
286 if (i == ConstraintsNumber || i == SearchButton-1) // separators
287 continue;
288 (*w)[i].first = new Buffer();
289 }
290
291 for (size_t i = 0; i < ConstraintsNumber; ++i)
292 {
293 *(*w)[i].first << fmtBold << std::setw(10) << std::left << ConstraintsNames[i] << fmtBoldEnd << ' ';
294 ShowTag(*(*w)[i].first, itsConstraints[i]);
295 }
296
297 *w->at(ConstraintsNumber+1).first << fmtBold << "Search in:" << fmtBoldEnd << ' ' << (Config.search_in_db ? "Database" : "Current playlist");
298 *w->at(ConstraintsNumber+2).first << fmtBold << "Search mode:" << fmtBoldEnd << ' ' << *SearchMode;
299
300 *w->at(SearchButton).first << "Search";
301 *w->at(ResetButton).first << "Reset";
302 }
303
304 void SearchEngine::Reset()
305 {
306 for (size_t i = 0; i < ConstraintsNumber; ++i)
307 itsConstraints[i].clear();
308 w->Reset();
309 Prepare();
310 ShowMessage("Search state reset");
311 }
312
313 void SearchEngine::Search()
314 {
315 bool constraints_empty = 1;
316 for (size_t i = 0; i < ConstraintsNumber; ++i)
317 {
318 if (!itsConstraints[i].empty())
319 {
320 constraints_empty = 0;
321 break;
322 }
323 }
324 if (constraints_empty)
325 return;
326
327 if (Config.search_in_db && (SearchMode == &SearchModes[0] || SearchMode == &SearchModes[2])) // use built-in mpd searching
328 {
329 Mpd.StartSearch(SearchMode == &SearchModes[2]);
330 if (!itsConstraints[0].empty())
331 Mpd.AddSearchAny(itsConstraints[0]);
332 if (!itsConstraints[1].empty())
333 Mpd.AddSearch(MPD_TAG_ARTIST, itsConstraints[1]);
334 if (!itsConstraints[2].empty())
335 Mpd.AddSearch(MPD_TAG_TITLE, itsConstraints[2]);
336 if (!itsConstraints[3].empty())
337 Mpd.AddSearch(MPD_TAG_ALBUM, itsConstraints[3]);
338 if (!itsConstraints[4].empty())
339 Mpd.AddSearchURI(itsConstraints[4]);
340 if (!itsConstraints[5].empty())
341 Mpd.AddSearch(MPD_TAG_COMPOSER, itsConstraints[5]);
342 if (!itsConstraints[6].empty())
343 Mpd.AddSearch(MPD_TAG_PERFORMER, itsConstraints[6]);
344 if (!itsConstraints[7].empty())
345 Mpd.AddSearch(MPD_TAG_GENRE, itsConstraints[7]);
346 if (!itsConstraints[8].empty())
347 Mpd.AddSearch(MPD_TAG_DATE, itsConstraints[8]);
348 if (!itsConstraints[9].empty())
349 Mpd.AddSearch(MPD_TAG_COMMENT, itsConstraints[9]);
350 MPD::SongList results;
351 Mpd.CommitSearch(results);
352 for (MPD::SongList::const_iterator it = results.begin(); it != results.end(); ++it)
353 w->AddOption(std::make_pair(static_cast<Buffer *>(0), *it));
354 return;
355 }
356
357 MPD::SongList list;
358 if (Config.search_in_db)
359 Mpd.GetDirectoryRecursive("/", list);
360 else
361 {
362 list.reserve(myPlaylist->Items->Size());
363 for (size_t i = 0; i < myPlaylist->Items->Size(); ++i)
364 list.push_back(&(*myPlaylist->Items)[i]);
365 }
366
367 bool any_found = 1;
368 bool found = 1;
369
370 for (MPD::SongList::const_iterator it = list.begin(); it != list.end(); ++it)
371 {
372 if (SearchMode != &SearchModes[2]) // match to pattern
373 {
374 regex_t rx;
375 if (!itsConstraints[0].empty())
376 {
377 if (regcomp(&rx, itsConstraints[0].c_str(), REG_ICASE | Config.regex_type) == 0)
378 {
379 any_found =
380 !regexec(&rx, (*it)->GetArtist().c_str(), 0, 0, 0)
381 || !regexec(&rx, (*it)->GetTitle().c_str(), 0, 0, 0)
382 || !regexec(&rx, (*it)->GetAlbum().c_str(), 0, 0, 0)
383 || !regexec(&rx, (*it)->GetName().c_str(), 0, 0, 0)
384 || !regexec(&rx, (*it)->GetComposer().c_str(), 0, 0, 0)
385 || !regexec(&rx, (*it)->GetPerformer().c_str(), 0, 0, 0)
386 || !regexec(&rx, (*it)->GetGenre().c_str(), 0, 0, 0)
387 || !regexec(&rx, (*it)->GetDate().c_str(), 0, 0, 0)
388 || !regexec(&rx, (*it)->GetComment().c_str(), 0, 0, 0);
389 }
390 regfree(&rx);
391 }
392
393 if (found && !itsConstraints[1].empty())
394 {
395 if (!regcomp(&rx, itsConstraints[1].c_str(), REG_ICASE | Config.regex_type))
396 found = !regexec(&rx, (*it)->GetArtist().c_str(), 0, 0, 0);
397 regfree(&rx);
398 }
399 if (found && !itsConstraints[2].empty())
400 {
401 if (!regcomp(&rx, itsConstraints[2].c_str(), REG_ICASE | Config.regex_type))
402 found = !regexec(&rx, (*it)->GetTitle().c_str(), 0, 0, 0);
403 regfree(&rx);
404 }
405 if (found && !itsConstraints[3].empty())
406 {
407 if (!regcomp(&rx, itsConstraints[3].c_str(), REG_ICASE | Config.regex_type))
408 found = !regexec(&rx, (*it)->GetAlbum().c_str(), 0, 0, 0);
409 regfree(&rx);
410 }
411 if (found && !itsConstraints[4].empty())
412 {
413 if (!regcomp(&rx, itsConstraints[4].c_str(), REG_ICASE | Config.regex_type))
414 found = !regexec(&rx, (*it)->GetName().c_str(), 0, 0, 0);
415 regfree(&rx);
416 }
417 if (found && !itsConstraints[5].empty())
418 {
419 if (!regcomp(&rx, itsConstraints[5].c_str(), REG_ICASE | Config.regex_type))
420 found = !regexec(&rx, (*it)->GetComposer().c_str(), 0, 0, 0);
421 regfree(&rx);
422 }
423 if (found && !itsConstraints[6].empty())
424 {
425 if (!regcomp(&rx, itsConstraints[6].c_str(), REG_ICASE | Config.regex_type))
426 found = !regexec(&rx, (*it)->GetPerformer().c_str(), 0, 0, 0);
427 regfree(&rx);
428 }
429 if (found && !itsConstraints[7].empty())
430 {
431 if (!regcomp(&rx, itsConstraints[7].c_str(), REG_ICASE | Config.regex_type))
432 found = !regexec(&rx, (*it)->GetGenre().c_str(), 0, 0, 0);
433 regfree(&rx);
434 }
435 if (found && !itsConstraints[8].empty())
436 {
437 if (!regcomp(&rx, itsConstraints[8].c_str(), REG_ICASE | Config.regex_type))
438 found = !regexec(&rx, (*it)->GetDate().c_str(), 0, 0, 0);
439 regfree(&rx);
440 }
441 if (found && !itsConstraints[9].empty())
442 {
443 if (!regcomp(&rx, itsConstraints[9].c_str(), REG_ICASE | Config.regex_type))
444 found = !regexec(&rx, (*it)->GetComment().c_str(), 0, 0, 0);
445 regfree(&rx);
446 }
447 }
448 else // match only if values are equal
449 {
450 CaseInsensitiveStringComparison cmp;
451
452 if (!itsConstraints[0].empty())
453 any_found =
454 !cmp((*it)->GetArtist(), itsConstraints[0])
455 || !cmp((*it)->GetTitle(), itsConstraints[0])
456 || !cmp((*it)->GetAlbum(), itsConstraints[0])
457 || !cmp((*it)->GetName(), itsConstraints[0])
458 || !cmp((*it)->GetComposer(), itsConstraints[0])
459 || !cmp((*it)->GetPerformer(), itsConstraints[0])
460 || !cmp((*it)->GetGenre(), itsConstraints[0])
461 || !cmp((*it)->GetDate(), itsConstraints[0])
462 || !cmp((*it)->GetComment(), itsConstraints[0]);
463
464 if (found && !itsConstraints[1].empty())
465 found = !cmp((*it)->GetArtist(), itsConstraints[1]);
466 if (found && !itsConstraints[2].empty())
467 found = !cmp((*it)->GetTitle(), itsConstraints[2]);
468 if (found && !itsConstraints[3].empty())
469 found = !cmp((*it)->GetAlbum(), itsConstraints[3]);
470 if (found && !itsConstraints[4].empty())
471 found = !cmp((*it)->GetName(), itsConstraints[4]);
472 if (found && !itsConstraints[5].empty())
473 found = !cmp((*it)->GetComposer(), itsConstraints[5]);
474 if (found && !itsConstraints[6].empty())
475 found = !cmp((*it)->GetPerformer(), itsConstraints[6]);
476 if (found && !itsConstraints[7].empty())
477 found = !cmp((*it)->GetGenre(), itsConstraints[7]);
478 if (found && !itsConstraints[8].empty())
479 found = !cmp((*it)->GetDate(), itsConstraints[8]);
480 if (found && !itsConstraints[9].empty())
481 found = !cmp((*it)->GetComment(), itsConstraints[9]);
482 }
483
484 if (found && any_found)
485 {
486 MPD::Song *ss = Config.search_in_db ? *it : new MPD::Song(**it);
487 w->AddOption(std::make_pair(static_cast<Buffer *>(0), ss));
488 list[it-list.begin()] = 0;
489 }
490 found = 1;
491 any_found = 1;
492 }
493 if (Config.search_in_db) // free song list only if it's database
494 MPD::FreeSongList(list);
495 }
496
497 std::string SearchEngine::SearchEngineOptionToString(const std::pair<Buffer *, MPD::Song *> &pair, void *)
498 {
499 if (!Config.columns_in_search_engine)
500 return pair.second->toString(Config.song_list_format);
501 else
502 return Playlist::SongInColumnsToString(*pair.second, 0);
503 }
504
an ncurses mpd client inspired by ncmpc