97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#include "m3uparser.h"
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#include <QtDebug>
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M3UParser::M3UParser(QIODevice* device, const QDir& directory, QObject* parent)
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: QObject(parent),
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device_(device),
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type_(STANDARD),
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directory_(directory) {
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}
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const QList<Song>& M3UParser::Parse() {
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QString line = QString::fromLatin1(device_->readLine());
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if (line == "#EXTM3U") {
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// This is in extended M3U format.
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type_ = EXTENDED;
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line = QString::fromLatin1(device_->readLine());
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}
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do {
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if (line.startsWith('#')) {
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// Extended info or comment.
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if (type_ == EXTENDED && line.startsWith("#EXT")) {
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if (!ParseMetadata(line, ¤t_metadata_)) {
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qWarning() << "Failed to parse metadata: " << line;
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}
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}
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} else {
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// Track location.
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QUrl url;
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if (!ParseTrackLocation(line, &url)) {
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qWarning() << "Failed to parse location: " << line;
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}
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}
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line = QString::fromLatin1(device_->readLine());
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} while (device_->canReadLine());
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return songs_;
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}
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bool M3UParser::ParseMetadata(const QString& line, M3UParser::Metadata* metadata) const {
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// Extended info, eg.
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// #EXTINF:123,Sample Artist - Sample title
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QString info = line.section(':', 1);
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QString l = info.section(',', 0, 0);
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bool ok = false;
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int length = l.toInt(&ok);
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if (!ok) {
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return false;
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}
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QString track_info = info.section(',', 1);
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QStringList list = track_info.split('-');
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if (list.size() <= 1) {
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return false;
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}
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metadata->artist = list[0].trimmed();
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metadata->title = list[1].trimmed();
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metadata->length = length;
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return true;
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}
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bool M3UParser::ParseTrackLocation(const QString& line, QUrl* url) const {
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if (line.contains(QRegExp("^[a-z]+://"))) {
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// Looks like a url.
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QUrl temp(line);
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if (temp.isValid()) {
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*url = temp;
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return true;
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} else {
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return false;
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}
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}
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// Should be a local path.
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if (QDir::isAbsolutePath(line)) {
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// Absolute path.
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// Fix windows \, eg. C:\foo -> C:/foo.
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QString proper_path = QDir::fromNativeSeparators(line);
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// C:/foo -> /C:/foo.
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if (!proper_path.startsWith('/')) {
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proper_path.prepend("/");
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}
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*url = "file://" + proper_path;
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return true;
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} else {
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// Relative path.
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QString proper_path = QDir::fromNativeSeparators(line);
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QString absolute_path = directory_.absoluteFilePath(proper_path);
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// C:/foo -> /C:/foo.
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if (!absolute_path.startsWith('/')) {
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absolute_path.prepend("/");
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}
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*url = "file://" + absolute_path;
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return true;
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}
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}
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