void test_block(const QString &fileName)
{
QIODevice *dev = KFilterDev::deviceForFile(fileName);
if(!dev)
{
kdWarning() << "dev=0" << endl;
return;
}
if(!dev->open(IO_ReadOnly))
{
kdWarning() << "open failed " << endl;
return;
}
// This is what KGzipDev::readAll could do, if QIODevice::readAll was virtual....
QByteArray array(1024);
int n;
while((n = dev->readBlock(array.data(), array.size())))
{
kdDebug() << "readBlock returned " << n << endl << endl;
// QCString s(array,n+1); // Terminate with 0 before printing
// printf("%s", s.data());
kdDebug() << "dev.at = " << dev->at() << endl;
// kdDebug() << "f.at = " << f.at() << endl;
}
dev->close();
delete dev;
}
static
void CALLBACK_CALL_TYPE iod_read_fn(png_structp png_ptr, png_bytep data, png_size_t length)
{
QImageIO* iio = (QImageIO*)png_get_io_ptr(png_ptr);
QIODevice* in = iio->ioDevice();
while (length) {
int nr = in->readBlock((char*)data, length);
if (nr <= 0) {
png_error(png_ptr, "Read Error");
return;
}
length -= nr;
}
}
static
boolean qt_fill_input_buffer(j_decompress_ptr cinfo)
{
int num_read;
my_jpeg_source_mgr* src = (my_jpeg_source_mgr*)cinfo->src;
QIODevice* dev = src->iio->ioDevice();
src->next_input_byte = src->buffer;
num_read = dev->readBlock((char*)src->buffer, max_buf);
if ( num_read <= 0 ) {
// Insert a fake EOI marker - as per jpeglib recommendation
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
src->bytes_in_buffer = 2;
} else {
src->bytes_in_buffer = num_read;
}
#if defined(_OS_UNIXWARE7_)
return B_TRUE;
#else
return TRUE;
#endif
}
void PakProtocol::get(const KURL &url) {
kdDebug(PAK_DEBUG_ID) << "ArchiveProtocol::get " << url << endl;
QString path;
KIO::Error errorNum;
if ( !checkNewFile( url, path, errorNum ) )
{
if ( errorNum == KIO::ERR_CANNOT_OPEN_FOR_READING )
{
// If we cannot open, it might be a problem with the archive header (e.g. unsupported format)
// Therefore give a more specific error message
error( KIO::ERR_SLAVE_DEFINED,
i18n( "Could not open the file, probably due to an unsupported file format.\n%1")
.arg( url.prettyURL() ) );
return;
}
else
{
// We have any other error
error( errorNum, url.prettyURL() );
return;
}
}
kdDebug(PAK_DEBUG_ID) << "Continue getting" << endl;
path = QString::fromLocal8Bit(remoteEncoding()->encode(path));
kdDebug(PAK_DEBUG_ID) << "Path > " << path << endl;
const KArchiveDirectory* root = _pakFile->directory();
const KArchiveEntry* archiveEntry = root->entry( path );
kdDebug(PAK_DEBUG_ID) << "Check if no archiveEntry > " << archiveEntry << endl;
if ( !archiveEntry )
{
error( KIO::ERR_DOES_NOT_EXIST, url.prettyURL() );
return;
}
kdDebug(PAK_DEBUG_ID) << "archiveEntry::name > " << archiveEntry->name() << endl;
if ( archiveEntry->isDirectory() )
{
error( KIO::ERR_IS_DIRECTORY, url.prettyURL() );
return;
}
const KArchiveFile* archiveFileEntry = static_cast<const KArchiveFile *>(archiveEntry);
if ( !archiveEntry->symlink().isEmpty() )
{
kdDebug(7109) << "Redirection to " << archiveEntry->symlink() << endl;
KURL realURL;
if (archiveEntry->symlink().startsWith("/")) { // absolute path
realURL.setPath(archiveEntry->symlink() ); // goes out of tar:/, back into file:
} else {
realURL = KURL( url, archiveEntry->symlink() );
}
kdDebug(7109) << "realURL= " << realURL << endl;
redirection( realURL );
finished();
return;
}
//kdDebug(7109) << "Preparing to get the archive data" << endl;
/*
* The easy way would be to get the data by calling archiveFileEntry->data()
* However this has drawbacks:
* - the complete file must be read into the memory
* - errors are skipped, resulting in an empty file
*/
QIODevice* io = 0;
// Getting the device is hard, as archiveFileEntry->device() is not virtual!
if ( url.protocol() == "pak" )
{
io = archiveFileEntry->device();
}
else
{
// Wrong protocol? Why was this not catched by checkNewFile?
kdWarning(7109) << "Protocol " << url.protocol() << " not supported by this IOSlave; " << k_funcinfo << endl;
error( KIO::ERR_UNSUPPORTED_PROTOCOL, url.protocol() );
return;
}
if (!io)
{
error( KIO::ERR_SLAVE_DEFINED,
i18n( "The archive file could not be opened, perhaps because the format is unsupported.\n%1" )
.arg( url.prettyURL() ) );
return;
}
if ( !io->open( IO_ReadOnly ) )
{
error( KIO::ERR_CANNOT_OPEN_FOR_READING, url.prettyURL() );
return;
}
totalSize( archiveFileEntry->size() );
// Size of a QIODevice read. It must be large enough so that the mime type check will not fail
const int maxSize = 0x100000; // 1MB
int bufferSize = kMin( maxSize, archiveFileEntry->size() );
QByteArray buffer ( bufferSize );
if ( buffer.isEmpty() && bufferSize > 0 )
{
// Something went wrong
error( KIO::ERR_OUT_OF_MEMORY, url.prettyURL() );
return;
}
bool firstRead = true;
// How much file do we still have to process?
int fileSize = archiveFileEntry->size();
KIO::filesize_t processed = 0;
while ( !io->atEnd() && fileSize > 0 )
{
if ( !firstRead )
{
bufferSize = kMin( maxSize, fileSize );
buffer.resize( bufferSize, QGArray::SpeedOptim );
}
const Q_LONG read = io->readBlock( buffer.data(), buffer.size() ); // Avoid to use bufferSize here, in case something went wrong.
if ( read != bufferSize )
{
kdWarning(7109) << "Read " << read << " bytes but expected " << bufferSize << endl;
error( KIO::ERR_COULD_NOT_READ, url.prettyURL() );
return;
}
if ( firstRead )
{
// We use the magic one the first data read
// (As magic detection is about fixed positions, we can be sure that it is enough data.)
KMimeMagicResult * result = KMimeMagic::self()->findBufferFileType( buffer, path );
kdDebug(7109) << "Emitting mimetype " << result->mimeType() << endl;
mimeType( result->mimeType() );
firstRead = false;
}
data( buffer );
processed += read;
processedSize( processed );
fileSize -= bufferSize;
}
io->close();
delete io;
data( QByteArray() );
finished();
/*kdDebug(PAK_DEBUG_ID) << "Entering get()" << endl;
mimetype("text/plain");
QCString str("Hello Pak World!!");
data(str);
finished();
kdDebug(PAK_DEBUG_ID) << "Exiting get()" << endl;*/
}