bool BaseTextDocument::open(const QString &fileName)
{
QString title = tr("untitled");
if (!fileName.isEmpty()) {
const QFileInfo fi(fileName);
m_fileName = fi.absoluteFilePath();
QFile file(fileName);
if (!file.exists())
return false;
if (!fi.isReadable())
return false;
if (!fi.isWritable()) {
if (!file.open(QIODevice::ReadOnly))
return false;
} else {
if (!file.open(QIODevice::ReadWrite))
return false;
}
title = fi.fileName();
QByteArray buf = file.readAll();
int bytesRead = buf.size();
QTextCodec *codec = m_codec;
// code taken from qtextstream
if (bytesRead >= 4 && ((uchar(buf[0]) == 0xff && uchar(buf[1]) == 0xfe && uchar(buf[2]) == 0 && uchar(buf[3]) == 0)
|| (uchar(buf[0]) == 0 && uchar(buf[1]) == 0 && uchar(buf[2]) == 0xfe && uchar(buf[3]) == 0xff))) {
codec = QTextCodec::codecForName("UTF-32");
} else if (bytesRead >= 2 && ((uchar(buf[0]) == 0xff && uchar(buf[1]) == 0xfe)
|| (uchar(buf[0]) == 0xfe && uchar(buf[1]) == 0xff))) {
codec = QTextCodec::codecForName("UTF-16");
} else if (!codec) {
codec = QTextCodec::codecForLocale();
}
// end code taken from qtextstream
m_codec = codec;
#if 0 // should work, but does not, Qt bug with "system" codec
QTextDecoder *decoder = m_codec->makeDecoder();
QString text = decoder->toUnicode(buf);
m_hasDecodingError = (decoder->hasFailure());
delete decoder;
#else
QString text = m_codec->toUnicode(buf);
QByteArray verifyBuf = m_codec->fromUnicode(text); // slow
// the minSize trick lets us ignore unicode headers
int minSize = qMin(verifyBuf.size(), buf.size());
m_hasDecodingError = (minSize < buf.size()- 4
|| memcmp(verifyBuf.constData() + verifyBuf.size() - minSize,
buf.constData() + buf.size() - minSize, minSize));
#endif
if (m_hasDecodingError) {
int p = buf.indexOf('\n', 16384);
if (p < 0)
m_decodingErrorSample = buf;
else
m_decodingErrorSample = buf.left(p);
} else {
m_decodingErrorSample.clear();
}
int lf = text.indexOf('\n');
if (lf > 0 && text.at(lf-1) == QLatin1Char('\r')) {
m_lineTerminatorMode = CRLFLineTerminator;
} else if (lf >= 0) {
m_lineTerminatorMode = LFLineTerminator;
} else {
m_lineTerminatorMode = NativeLineTerminator;
}
m_document->setModified(false);
m_document->setUndoRedoEnabled(false);
if (m_isBinaryData)
m_document->setHtml(tr("<em>Binary data</em>"));
else
m_document->setPlainText(text);
m_document->setUndoRedoEnabled(true);
TextEditDocumentLayout *documentLayout = qobject_cast<TextEditDocumentLayout*>(m_document->documentLayout());
QTC_ASSERT(documentLayout, return true);
documentLayout->lastSaveRevision = 0;
m_document->setModified(false);
emit titleChanged(title);
emit changed();
}
return true;
}
void TextView::updateText(quintptr source)
{
if (source == reinterpret_cast<quintptr>(this))
return;
QByteArray rawdata = byteSource->getRawData();
#ifdef SCINTILLA
scintEditor->blockSignals(true);
if (rawdata.size() > 0) {
if (currentCodec != nullptr) { //safeguard
QTextDecoder *decoder = currentCodec->makeDecoder(QTextCodec::ConvertInvalidToNull); // when decoding take possible BOM headers into account
QString textf = decoder->toUnicode(rawdata.constData(),rawdata.size());
if (decoder->hasFailure()) {
if (errorNotReported) {
logger->logWarning(tr("invalid text decoding [%1]").arg(QString::fromUtf8(currentCodec->name())),LOGID);
ui->codecsComboBox->setStyleSheet(GuiStyles::ComboBoxError);
errorNotReported = false;
}
} else {
ui->codecsComboBox->setStyleSheet("");
errorNotReported = true;
}
delete decoder;
scintEditor->setText(textf);
updateStats();
scintEditor->setCursorPosition(0,0);
scintEditor->ensureCursorVisible();
} else {
qCritical() << tr("%1:updatedText() currentCodec is nullptr T_T").arg(metaObject()->className());
}
if (autoCopyToClipboard)
copyToClipboard();
} else {
scintEditor->setText(QString());
updateStats();
}
scintEditor->blockSignals(false);
#else
plainTextEdit->blockSignals(true);
plainTextEdit->clear();
if (rawdata.size() > MAX_TEXT_VIEW) {
plainTextEdit->appendPlainText("Data Too large for this view");
plainTextEdit->blockSignals(false);
plainTextEdit->setEnabled(false);
ui->statsLabel->setText(QString(""));
ui->codecsComboBox->setStyleSheet("");
emit invalidText();
} else {
if (rawdata.size() > 0) {
if (currentCodec != nullptr) { //safeguard
QTextDecoder *decoder = currentCodec->makeDecoder(QTextCodec::ConvertInvalidToNull); // when decoding take possible BOM headers into account
QString textf = decoder->toUnicode(rawdata.constData(),rawdata.size());
if (decoder->hasFailure()) {
if (errorNotReported) {
logger->logWarning(tr("invalid text decoding [%1]").arg(QString::fromUtf8(currentCodec->name())),LOGID);
ui->codecsComboBox->setStyleSheet(GuiStyles::ComboBoxError);
errorNotReported = false;
}
} else {
ui->codecsComboBox->setStyleSheet("");
errorNotReported = true;
}
delete decoder;
plainTextEdit->appendPlainText(textf);
updateStats();
plainTextEdit->moveCursor(QTextCursor::Start);
plainTextEdit->ensureCursorVisible();
plainTextEdit->setEnabled(true);
} else {
qCritical() << tr("%1:updatedText() currentCodec is nullptr T_T").arg(metaObject()->className());
}
} else {
plainTextEdit->setEnabled(true);
}
if (autoCopyToClipboard)
copyToClipboard();
}
plainTextEdit->blockSignals(false);
#endif
}