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fix: gzip file parsing as a stream

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Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>
This commit is contained in:
Trial97
2025-04-19 00:41:24 +03:00
parent a39edb3b59
commit d1c7107575
3 changed files with 107 additions and 125 deletions
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91
launcher/ui/pages/instance/OtherLogsPage.cpp
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@ -151,54 +151,13 @@ void OtherLogsPage::on_selectLogBox_currentIndexChanged(const int index)
}
}
class ReadLineAbstract {
public:
ReadLineAbstract(QFile* file) : m_file(file)
{
if (file->fileName().endsWith(".gz"))
m_gz = new GZipStream(file);
}
~ReadLineAbstract() { delete m_gz; }
QString readLine()
{
if (!m_gz)
return QString::fromUtf8(m_file->readLine());
QString line;
for (;;) {
if (!m_decodedData.isEmpty()) {
int newlineIndex = m_decodedData.indexOf('\n');
if (newlineIndex != -1) {
line += QString::fromUtf8(m_decodedData).left(newlineIndex);
m_decodedData.remove(0, newlineIndex + 1);
return line;
}
line += QString::fromUtf8(m_decodedData);
m_decodedData.clear();
}
if (!m_gz->unzipBlockByBlock(m_decodedData)) { // If error occurs during unzipping
m_decodedData.clear();
return QObject::tr("The content of the file(%1) could not be decoded.").arg(m_file->fileName());
}
}
}
bool done() { return m_gz ? m_decodedData.isEmpty() : m_file->atEnd(); }
private:
QFile* m_file;
GZipStream* m_gz = nullptr;
QByteArray m_decodedData;
};
void OtherLogsPage::on_btnReload_clicked()
{
if (m_currentFile.isEmpty()) {
setControlsEnabled(false);
return;
}
QFile file(FS::PathCombine(m_path, m_currentFile));
if (!file.open(QFile::ReadOnly)) {
setControlsEnabled(false);
@ -220,15 +179,9 @@ void OtherLogsPage::on_btnReload_clicked()
showTooBig();
return;
}
ReadLineAbstract stream(&file);
// Try to determine a level for each line
ui->text->clear();
ui->text->setModel(nullptr);
m_model->clear();
auto line = stream.readLine();
while (!stream.done()) { // just read until the model is full or the file ended
auto handleLine = [this](QString line) {
if (line.isEmpty())
return false;
if (line.back() == '\n')
line = line.remove(line.size() - 1, 1);
MessageLevel::Enum level = MessageLevel::Unknown;
@ -245,10 +198,40 @@ void OtherLogsPage::on_btnReload_clicked()
}
m_model->append(level, line);
if (m_model->isOverFlow())
break;
return m_model->isOverFlow();
};
line = stream.readLine();
// Try to determine a level for each line
ui->text->clear();
ui->text->setModel(nullptr);
m_model->clear();
if (file.fileName().endsWith(".gz")) {
QString line;
auto error = GZip::readGzFileByBlocks(&file, [&line, handleLine](const QByteArray& d) {
auto block = d;
int newlineIndex = block.indexOf('\n');
while (newlineIndex != -1) {
line += QString::fromUtf8(block).left(newlineIndex);
block.remove(0, newlineIndex + 1);
if (handleLine(line)) {
line.clear();
return false;
}
line.clear();
newlineIndex = block.indexOf('\n');
}
line += QString::fromUtf8(block);
return true;
});
if (!error.isEmpty()) {
setPlainText(tr("The file (%1) encountered an error when reading: %2.").arg(file.fileName(), error));
return;
} else if (!line.isEmpty()) {
handleLine(line);
}
} else {
while (!file.atEnd() && !handleLine(QString::fromUtf8(file.readLine()))) {
}
}
ui->text->setModel(m_proxy);
ui->text->scrollToBottom();