94 lines
3.4 KiB
C++
94 lines
3.4 KiB
C++
/*
|
|
* Strawberry Music Player
|
|
* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
|
|
*
|
|
* Strawberry 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <QObject>
|
|
#include <QString>
|
|
#include <QRegularExpression>
|
|
|
|
#include "utilities/strutils.h"
|
|
#include "core/networkaccessmanager.h"
|
|
#include "lyricsprovider.h"
|
|
|
|
LyricsProvider::LyricsProvider(const QString &name, const bool enabled, const bool authentication_required, NetworkAccessManager *network, QObject *parent)
|
|
: QObject(parent), network_(network), name_(name), enabled_(enabled), order_(0), authentication_required_(authentication_required) {}
|
|
|
|
QString LyricsProvider::ParseLyricsFromHTML(const QString &content, const QRegularExpression &start_tag, const QRegularExpression &end_tag, const QRegularExpression &lyrics_start, const bool multiple) {
|
|
|
|
QString lyrics;
|
|
qint64 start_idx = 0;
|
|
|
|
do {
|
|
|
|
QRegularExpressionMatch rematch = lyrics_start.match(content, start_idx);
|
|
if (!rematch.hasMatch()) break;
|
|
|
|
const qint64 start_lyrics_idx = rematch.capturedEnd();
|
|
qint64 end_lyrics_idx = -1;
|
|
|
|
// Find the index of the end tag.
|
|
qint64 idx = start_lyrics_idx;
|
|
QRegularExpressionMatch rematch_start_tag;
|
|
QRegularExpressionMatch rematch_end_tag;
|
|
int tags = 1;
|
|
do {
|
|
rematch_start_tag = QRegularExpression(start_tag).match(content, idx);
|
|
const qint64 start_tag_idx = rematch_start_tag.hasMatch() ? rematch_start_tag.capturedStart() : -1;
|
|
rematch_end_tag = QRegularExpression(end_tag).match(content, idx);
|
|
const qint64 end_tag_idx = rematch_end_tag.hasMatch() ? rematch_end_tag.capturedStart() : -1;
|
|
if (rematch_start_tag.hasMatch() && start_tag_idx <= end_tag_idx) {
|
|
++tags;
|
|
idx = start_tag_idx + rematch_start_tag.capturedLength();
|
|
}
|
|
else if (rematch_end_tag.hasMatch()) {
|
|
--tags;
|
|
idx = end_tag_idx + rematch_end_tag.capturedLength();
|
|
if (tags == 0) {
|
|
end_lyrics_idx = rematch_end_tag.capturedStart();
|
|
start_idx = rematch_end_tag.capturedEnd();
|
|
}
|
|
}
|
|
}
|
|
while (tags > 0 && (rematch_start_tag.hasMatch() || rematch_end_tag.hasMatch()));
|
|
|
|
if (end_lyrics_idx != -1 && start_lyrics_idx < end_lyrics_idx) {
|
|
if (!lyrics.isEmpty()) {
|
|
lyrics.append("\n");
|
|
}
|
|
lyrics.append(content.mid(start_lyrics_idx, end_lyrics_idx - start_lyrics_idx)
|
|
.replace(QRegularExpression("<br[^>]*>"), "\n")
|
|
.remove(QRegularExpression("<[^>]*>"))
|
|
.trimmed());
|
|
}
|
|
else {
|
|
start_idx = -1;
|
|
}
|
|
|
|
}
|
|
while (start_idx > 0 && multiple);
|
|
|
|
if (lyrics.length() > 6000 || lyrics.contains("there are no lyrics to", Qt::CaseInsensitive)) {
|
|
return QString();
|
|
}
|
|
|
|
return Utilities::DecodeHtmlEntities(lyrics);
|
|
|
|
}
|