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Add HTML lyrics provider

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This commit is contained in:
Jonas Kvinge
2022-10-17 21:34:18 +02:00
parent 50502ce720
commit 1c90b03476
10 changed files with 294 additions and 284 deletions
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66
src/lyrics/lyricsprovider.cpp
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@@ -21,76 +21,10 @@
#include <QObject>
#include <QString>
#include <QRegularExpression>
#include "utilities/strutils.h"
#include "core/shared_ptr.h"
#include "core/networkaccessmanager.h"
#include "lyricsprovider.h"
LyricsProvider::LyricsProvider(const QString &name, const bool enabled, const bool authentication_required, SharedPtr<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)
.remove('\r')
.remove('\n')
.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);
}