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/***************************************************************************
* Copyright (C) 2008-2014 by Andrzej Rybczak *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <array>
#include <boost/range/detail/any_iterator.hpp>
#include <iomanip>
#include "display.h"
#include "global.h"
#include "helpers.h"
#include "menu_impl.h"
#include "playlist.h"
#include "search_engine.h"
#include "settings.h"
#include "status.h"
#include "statusbar.h"
#include "helpers/song_iterator_maker.h"
#include "utility/comparators.h"
#include "title.h"
#include "screen_switcher.h"
using Global::MainHeight;
using Global::MainStartY;
namespace ph = std::placeholders;
SearchEngine *mySearcher;
namespace {
/*const std::array<const std::string, 11> constraintsNames = {{
"Any",
"Artist",
"Album Artist",
"Title",
"Album",
"Filename",
"Composer",
"Performer",
"Genre",
"Date",
"Comment"
}};
const std::array<const char *, 3> searchModes = {{
"Match if tag contains searched phrase (no regexes)",
"Match if tag contains searched phrase (regexes supported)",
"Match only if both values are the same"
}};
namespace pos {
const size_t searchIn = constraintsNames.size()-1+1+1; // separated
const size_t searchMode = searchIn+1;
const size_t search = searchMode+1+1; // separated
const size_t reset = search+1;
}*/
std::string SEItemToString(const SEItem &ei);
bool SEItemEntryMatcher(const Regex::Regex &rx, const NC::Menu<SEItem>::Item &item, bool filter);
template <bool Const>
struct SongExtractor
{
typedef SongExtractor type;
typedef typename NC::Menu<SEItem>::Item MenuItem;
typedef typename std::conditional<Const, const MenuItem, MenuItem>::type Item;
typedef typename std::conditional<Const, const MPD::Song, MPD::Song>::type Song;
Song *operator()(Item &item) const
{
Song *ptr = nullptr;
if (!item.isSeparator() && item.value().isSong())
ptr = &item.value().song();
return ptr;
}
};
}
SongIterator SearchEngineWindow::currentS()
{
return makeSongIterator_<SEItem>(current(), SongExtractor<false>());
}
ConstSongIterator SearchEngineWindow::currentS() const
{
return makeConstSongIterator_<SEItem>(current(), SongExtractor<true>());
}
SongIterator SearchEngineWindow::beginS()
{
return makeSongIterator_<SEItem>(begin(), SongExtractor<false>());
}
ConstSongIterator SearchEngineWindow::beginS() const
{
return makeConstSongIterator_<SEItem>(begin(), SongExtractor<true>());
}
SongIterator SearchEngineWindow::endS()
{
return makeSongIterator_<SEItem>(end(), SongExtractor<false>());
}
ConstSongIterator SearchEngineWindow::endS() const
{
return makeConstSongIterator_<SEItem>(end(), SongExtractor<true>());
}
std::vector<MPD::Song> SearchEngineWindow::getSelectedSongs()
{
return {}; // TODO
}
/**********************************************************************/
const char *SearchEngine::ConstraintsNames[] =
{
"Any",
"Artist",
"Album Artist",
"Title",
"Album",
"Filename",
"Composer",
"Performer",
"Genre",
"Date",
"Comment"
};
const char *SearchEngine::SearchModes[] =
{
"Match if tag contains searched phrase (no regexes)",
"Match if tag contains searched phrase (regexes supported)",
"Match only if both values are the same",
0
};
size_t SearchEngine::StaticOptions = 20;
size_t SearchEngine::ResetButton = 16;
size_t SearchEngine::SearchButton = 15;
SearchEngine::SearchEngine()
: Screen(NC::Menu<SEItem>(0, MainStartY, COLS, MainHeight, "", Config.main_color, NC::Border()))
{
w.setHighlightColor(Config.main_highlight_color);
w.cyclicScrolling(Config.use_cyclic_scrolling);
w.centeredCursor(Config.centered_cursor);
w.setItemDisplayer(std::bind(Display::SEItems, ph::_1, std::cref(w)));
w.setSelectedPrefix(Config.selected_item_prefix);
w.setSelectedSuffix(Config.selected_item_suffix);
SearchMode = &SearchModes[Config.search_engine_default_search_mode];
}
void SearchEngine::resize()
{
size_t x_offset, width;
getWindowResizeParams(x_offset, width);
w.resize(width, MainHeight);
w.moveTo(x_offset, MainStartY);
switch (Config.search_engine_display_mode)
{
case DisplayMode::Columns:
if (Config.titles_visibility)
{
w.setTitle(Display::Columns(w.getWidth()));
break;
}
case DisplayMode::Classic:
w.setTitle("");
}
hasToBeResized = 0;
}
void SearchEngine::switchTo()
{
SwitchTo::execute(this);
if (w.empty())
Prepare();
markSongsInPlaylist(w);
drawHeader();
}
std::wstring SearchEngine::title()
{
return L"Search engine";
}
void SearchEngine::enterPressed()
{
size_t option = w.choice();
if (option > ConstraintsNumber && option < SearchButton)
w.current()->value().buffer().clear();
if (option < ConstraintsNumber)
{
Statusbar::ScopedLock slock;
std::string constraint = ConstraintsNames[option];
Statusbar::put() << NC::Format::Bold << constraint << NC::Format::NoBold << ": ";
itsConstraints[option] = Global::wFooter->prompt(itsConstraints[option]);
w.current()->value().buffer().clear();
constraint.resize(13, ' ');
w.current()->value().buffer() << NC::Format::Bold << constraint << NC::Format::NoBold << ": ";
ShowTag(w.current()->value().buffer(), itsConstraints[option]);
}
else if (option == ConstraintsNumber+1)
{
Config.search_in_db = !Config.search_in_db;
w.current()->value().buffer() << NC::Format::Bold << "Search in:" << NC::Format::NoBold << ' ' << (Config.search_in_db ? "Database" : "Current playlist");
}
else if (option == ConstraintsNumber+2)
{
if (!*++SearchMode)
SearchMode = &SearchModes[0];
w.current()->value().buffer() << NC::Format::Bold << "Search mode:" << NC::Format::NoBold << ' ' << *SearchMode;
}
else if (option == SearchButton)
{
Statusbar::print("Searching...");
if (w.size() > StaticOptions)
Prepare();
Search();
if (w.rbegin()->value().isSong())
{
if (Config.search_engine_display_mode == DisplayMode::Columns)
w.setTitle(Config.titles_visibility ? Display::Columns(w.getWidth()) : "");
size_t found = w.size()-SearchEngine::StaticOptions;
found += 3; // don't count options inserted below
w.insertSeparator(ResetButton+1);
w.insertItem(ResetButton+2, SEItem(), NC::List::Properties::Bold | NC::List::Properties::Inactive);
w.at(ResetButton+2).value().mkBuffer() << Config.color1 << "Search results: " << Config.color2 << "Found " << found << (found > 1 ? " songs" : " song") << NC::Color::Default;
w.insertSeparator(ResetButton+3);
markSongsInPlaylist(w);
Statusbar::print("Searching finished");
if (Config.block_search_constraints_change)
for (size_t i = 0; i < StaticOptions-4; ++i)
w.at(i).setInactive(true);
w.scroll(NC::Scroll::Down);
w.scroll(NC::Scroll::Down);
}
else
Statusbar::print("No results found");
}
else if (option == ResetButton)
{
reset();
}
else
addSongToPlaylist(w.current()->value().song(), true);
}
void SearchEngine::mouseButtonPressed(MEVENT me)
{
if (w.empty() || !w.hasCoords(me.x, me.y) || size_t(me.y) >= w.size())
return;
if (me.bstate & (BUTTON1_PRESSED | BUTTON3_PRESSED))
{
if (!w.Goto(me.y))
return;
w.refresh();
if ((me.bstate & BUTTON3_PRESSED || w.choice() > ConstraintsNumber) && w.choice() < StaticOptions)
enterPressed();
else if (w.choice() >= StaticOptions)
{
if (me.bstate & BUTTON1_PRESSED)
addItemToPlaylist();
else
enterPressed();
}
}
else
Screen<WindowType>::mouseButtonPressed(me);
}
/***********************************************************************/
bool SearchEngine::allowsSearching()
{
return w.rbegin()->value().isSong();
}
void SearchEngine::setSearchConstraint(const std::string &constraint)
{
m_search_predicate = Regex::ItemFilter<SEItem>(
Regex::make(constraint, Config.regex_type),
std::bind(SEItemEntryMatcher, ph::_1, ph::_2, false)
);
}
void SearchEngine::clearConstraint()
{
m_search_predicate.clear();
}
bool SearchEngine::find(SearchDirection direction, bool wrap, bool skip_current)
{
return search(w, m_search_predicate, direction, wrap, skip_current);
}
/***********************************************************************/
bool SearchEngine::addItemToPlaylist()
{
bool result = false;
if (!w.empty() && w.current()->value().isSong())
result = addSongToPlaylist(w.current()->value().song(), false);
return result;
}
std::vector<MPD::Song> SearchEngine::getSelectedSongs()
{
std::vector<MPD::Song> result;
for (auto it = w.begin(); it != w.end(); ++it)
{
if (it->isSelected())
{
assert(it->value().isSong());
result.push_back(it->value().song());
}
}
// if no item is selected, add current one
if (result.empty() && !w.empty())
{
assert(w.current()->value().isSong());
result.push_back(w.current()->value().song());
}
return result;
}
/***********************************************************************/
void SearchEngine::Prepare()
{
w.setTitle("");
w.clear();
w.resizeList(StaticOptions-3);
for (auto &item : w)
item.setSelectable(false);
w.at(ConstraintsNumber).setSeparator(true);
w.at(SearchButton-1).setSeparator(true);
for (size_t i = 0; i < ConstraintsNumber; ++i)
{
std::string constraint = ConstraintsNames[i];
constraint.resize(13, ' ');
w[i].value().mkBuffer() << NC::Format::Bold << constraint << NC::Format::NoBold << ": ";
ShowTag(w[i].value().buffer(), itsConstraints[i]);
}
w.at(ConstraintsNumber+1).value().mkBuffer() << NC::Format::Bold << "Search in:" << NC::Format::NoBold << ' ' << (Config.search_in_db ? "Database" : "Current playlist");
w.at(ConstraintsNumber+2).value().mkBuffer() << NC::Format::Bold << "Search mode:" << NC::Format::NoBold << ' ' << *SearchMode;
w.at(SearchButton).value().mkBuffer() << "Search";
w.at(ResetButton).value().mkBuffer() << "Reset";
}
void SearchEngine::reset()
{
for (size_t i = 0; i < ConstraintsNumber; ++i)
itsConstraints[i].clear();
w.reset();
Prepare();
Statusbar::print("Search state reset");
}
void SearchEngine::Search()
{
bool constraints_empty = 1;
for (size_t i = 0; i < ConstraintsNumber; ++i)
{
if (!itsConstraints[i].empty())
{
constraints_empty = 0;
break;
}
}
if (constraints_empty)
return;
if (Config.search_in_db && (SearchMode == &SearchModes[0] || SearchMode == &SearchModes[2])) // use built-in mpd searching
{
Mpd.StartSearch(SearchMode == &SearchModes[2]);
if (!itsConstraints[0].empty())
Mpd.AddSearchAny(itsConstraints[0]);
if (!itsConstraints[1].empty())
Mpd.AddSearch(MPD_TAG_ARTIST, itsConstraints[1]);
if (!itsConstraints[2].empty())
Mpd.AddSearch(MPD_TAG_ALBUM_ARTIST, itsConstraints[2]);
if (!itsConstraints[3].empty())
Mpd.AddSearch(MPD_TAG_TITLE, itsConstraints[3]);
if (!itsConstraints[4].empty())
Mpd.AddSearch(MPD_TAG_ALBUM, itsConstraints[4]);
if (!itsConstraints[5].empty())
Mpd.AddSearchURI(itsConstraints[5]);
if (!itsConstraints[6].empty())
Mpd.AddSearch(MPD_TAG_COMPOSER, itsConstraints[6]);
if (!itsConstraints[7].empty())
Mpd.AddSearch(MPD_TAG_PERFORMER, itsConstraints[7]);
if (!itsConstraints[8].empty())
Mpd.AddSearch(MPD_TAG_GENRE, itsConstraints[8]);
if (!itsConstraints[9].empty())
Mpd.AddSearch(MPD_TAG_DATE, itsConstraints[9]);
if (!itsConstraints[10].empty())
Mpd.AddSearch(MPD_TAG_COMMENT, itsConstraints[10]);
for (MPD::SongIterator s = Mpd.CommitSearchSongs(), end; s != end; ++s)
w.addItem(std::move(*s));
return;
}
Regex::Regex rx[ConstraintsNumber];
if (SearchMode != &SearchModes[2]) // match to pattern
{
for (size_t i = 0; i < ConstraintsNumber; ++i)
{
if (!itsConstraints[i].empty())
{
try
{
rx[i] = Regex::make(itsConstraints[i], Config.regex_type);
}
catch (boost::bad_expression &) { }
}
}
}
typedef boost::range_detail::any_iterator<
const MPD::Song,
boost::single_pass_traversal_tag,
const MPD::Song &,
std::ptrdiff_t
> input_song_iterator;
input_song_iterator s, end;
if (Config.search_in_db)
{
s = input_song_iterator(Mpd.GetDirectoryRecursive("/"));
end = input_song_iterator(MPD::SongIterator());
}
else
{
s = input_song_iterator(myPlaylist->main().beginV());
end = input_song_iterator(myPlaylist->main().endV());
}
LocaleStringComparison cmp(std::locale(), Config.ignore_leading_the);
for (; s != end; ++s)
{
bool any_found = true, found = true;
if (SearchMode != &SearchModes[2]) // match to pattern
{
if (!rx[0].empty())
any_found =
Regex::search(s->getArtist(), rx[0])
|| Regex::search(s->getAlbumArtist(), rx[0])
|| Regex::search(s->getTitle(), rx[0])
|| Regex::search(s->getAlbum(), rx[0])
|| Regex::search(s->getName(), rx[0])
|| Regex::search(s->getComposer(), rx[0])
|| Regex::search(s->getPerformer(), rx[0])
|| Regex::search(s->getGenre(), rx[0])
|| Regex::search(s->getDate(), rx[0])
|| Regex::search(s->getComment(), rx[0]);
if (found && !rx[1].empty())
found = Regex::search(s->getArtist(), rx[1]);
if (found && !rx[2].empty())
found = Regex::search(s->getAlbumArtist(), rx[2]);
if (found && !rx[3].empty())
found = Regex::search(s->getTitle(), rx[3]);
if (found && !rx[4].empty())
found = Regex::search(s->getAlbum(), rx[4]);
if (found && !rx[5].empty())
found = Regex::search(s->getName(), rx[5]);
if (found && !rx[6].empty())
found = Regex::search(s->getComposer(), rx[6]);
if (found && !rx[7].empty())
found = Regex::search(s->getPerformer(), rx[7]);
if (found && !rx[8].empty())
found = Regex::search(s->getGenre(), rx[8]);
if (found && !rx[9].empty())
found = Regex::search(s->getDate(), rx[9]);
if (found && !rx[10].empty())
found = Regex::search(s->getComment(), rx[10]);
}
else // match only if values are equal
{
if (!itsConstraints[0].empty())
any_found =
!cmp(s->getArtist(), itsConstraints[0])
|| !cmp(s->getAlbumArtist(), itsConstraints[0])
|| !cmp(s->getTitle(), itsConstraints[0])
|| !cmp(s->getAlbum(), itsConstraints[0])
|| !cmp(s->getName(), itsConstraints[0])
|| !cmp(s->getComposer(), itsConstraints[0])
|| !cmp(s->getPerformer(), itsConstraints[0])
|| !cmp(s->getGenre(), itsConstraints[0])
|| !cmp(s->getDate(), itsConstraints[0])
|| !cmp(s->getComment(), itsConstraints[0]);
if (found && !itsConstraints[1].empty())
found = !cmp(s->getArtist(), itsConstraints[1]);
if (found && !itsConstraints[2].empty())
found = !cmp(s->getAlbumArtist(), itsConstraints[2]);
if (found && !itsConstraints[3].empty())
found = !cmp(s->getTitle(), itsConstraints[3]);
if (found && !itsConstraints[4].empty())
found = !cmp(s->getAlbum(), itsConstraints[4]);
if (found && !itsConstraints[5].empty())
found = !cmp(s->getName(), itsConstraints[5]);
if (found && !itsConstraints[6].empty())
found = !cmp(s->getComposer(), itsConstraints[6]);
if (found && !itsConstraints[7].empty())
found = !cmp(s->getPerformer(), itsConstraints[7]);
if (found && !itsConstraints[8].empty())
found = !cmp(s->getGenre(), itsConstraints[8]);
if (found && !itsConstraints[9].empty())
found = !cmp(s->getDate(), itsConstraints[9]);
if (found && !itsConstraints[10].empty())
found = !cmp(s->getComment(), itsConstraints[10]);
}
if (any_found && found)
w.addItem(*s);
}
}
namespace {
std::string SEItemToString(const SEItem &ei)
{
std::string result;
if (ei.isSong())
{
switch (Config.search_engine_display_mode)
{
case DisplayMode::Classic:
result = Format::stringify<char>(Config.song_list_format, &ei.song());
break;
case DisplayMode::Columns:
result = Format::stringify<char>(Config.song_columns_mode_format, &ei.song());
break;
}
}
else
result = ei.buffer().str();
return result;
}
bool SEItemEntryMatcher(const Regex::Regex &rx, const NC::Menu<SEItem>::Item &item, bool filter)
{
if (item.isSeparator() || !item.value().isSong())
return filter;
return Regex::search(SEItemToString(item.value()), rx);
}
}