bool LiteEditorFile::open(const QString &fileName, const QString &mimeType, bool bCheckCodec)
{
QFile file(fileName);
if (!file.open(QFile::ReadOnly)) {
return false;
}
const QFileInfo fi(fileName);
m_bReadOnly = !fi.isWritable();
m_mimeType = mimeType;
m_fileName = fileName;
QByteArray buf = file.readAll();
m_hasDecodingError = false;
if (bCheckCodec) {
if (mimeType == "text/html" || mimeType == "text/xml") {
m_codec = QTextCodec::codecForHtml(buf,QTextCodec::codecForName("utf-8"));
} else {
LiteApi::IMimeType *im = m_liteApp->mimeTypeManager()->findMimeType(mimeType);
if (im) {
QString codecName = im->codec();
if (!codecName.isEmpty()) {
m_codec = QTextCodec::codecForName(codecName.toLatin1());
}
}
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 (bytesRead >= 3 && uchar(buf[0]) == 0xef && uchar(buf[1]) == 0xbb && uchar(buf[2])== 0xbf) {
codec = QTextCodec::codecForName("UTF-8");
} else if (!codec) {
codec = QTextCodec::codecForLocale();
}
// end code taken from qtextstream
m_codec = codec;
}
}
QTextCodec::ConverterState state;
QString text = m_codec->toUnicode(buf,buf.size(),&state);
if (state.invalidChars > 0 || state.remainingChars > 0) {
m_hasDecodingError = true;
}
//qDebug() << state.invalidChars << state.remainingChars;
/*
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));
*/
/*
if (text.length()*2+4 < buf.length()) {
m_hasDecodingError = true;
}
*/
int lf = text.indexOf('\n');
if (lf < 0) {
m_lineTerminatorMode = NativeLineTerminator;
} else if (lf == 0) {
m_lineTerminatorMode = LFLineTerminator;
} else {
lf = text.indexOf(QRegExp("[^\r]\n"),lf-1);
if (lf >= 0) {
m_lineTerminatorMode = LFLineTerminator;
} else {
m_lineTerminatorMode = CRLFLineTerminator;
}
}
bool noprintCheck = m_liteApp->settings()->value(EDITOR_NOPRINTCHECK,true).toBool();
if (noprintCheck) {
for (int i = 0; i < text.length(); i++) {
if (!text[i].isPrint() && !text[i].isSpace() && text[i] != '\r' && text[i] != '\n') {
text[i] = '.';
m_hasDecodingError = true;
}
}
}
m_document->setPlainText(text);
return true;
}