virtual LVStreamRef OpenStream( const lChar16 * fname, lvopen_mode_t mode ) {
if ( mode!=LVOM_READ )
return LVStreamRef();
for ( int i=0; i<_list.length(); i++ ) {
//CRLog::trace("OpenStream(%s) : %s", LCSTR(lString16(fname)), LCSTR(lString16(_list[i]->GetName())) );
if ( !lStr_cmp(_list[i]->GetName(), fname) )
return _list[i]->openStream();
}
return LVStreamRef();
}
LVStreamRef CRJNIEnv::jbyteArrayToStream( jbyteArray array )
{
if ( !array )
return LVStreamRef();
int len = env->GetArrayLength(array);
if ( !len )
return LVStreamRef();
lUInt8 * data = (lUInt8 *)env->GetByteArrayElements(array, 0);
LVStreamRef res = LVCreateMemoryStream(data, len, true, LVOM_READ);
env->ReleaseByteArrayElements(array, (jbyte*)data, 0);
return res;
}
virtual LVStreamRef OpenStream( const lChar16 * fname, lvopen_mode_t mode ) {
LVStreamRef res = _container->OpenStream(fname, mode);
if (res.isNull())
return res;
if (isEncryptedItem(fname))
return LVStreamRef(new FontDemanglingStream(res, _fontManglingKey));
return res;
}
LVStreamRef GetEpubCoverpage(LVContainerRef arc)
{
// check root media type
lString16 rootfilePath = EpubGetRootFilePath(arc);
if ( rootfilePath.empty() )
return LVStreamRef();
EncryptedDataContainer * decryptor = new EncryptedDataContainer(arc);
if (decryptor->open()) {
CRLog::debug("EPUB: encrypted items detected");
}
LVContainerRef m_arc = LVContainerRef(decryptor);
lString16 codeBase = LVExtractPath(rootfilePath, false);
CRLog::trace("codeBase=%s", LCSTR(codeBase));
LVStreamRef content_stream = m_arc->OpenStream(rootfilePath.c_str(), LVOM_READ);
if ( content_stream.isNull() )
return LVStreamRef();
LVStreamRef coverPageImageStream;
// reading content stream
{
lString16 coverId;
ldomDocument * doc = LVParseXMLStream( content_stream );
if ( !doc )
return LVStreamRef();
for ( int i=1; i<20; i++ ) {
ldomNode * item = doc->nodeFromXPath( lString16(L"package/metadata/meta[") + lString16::itoa(i) + L"]" );
if ( !item )
break;
lString16 name = item->getAttributeValue(L"name");
lString16 content = item->getAttributeValue(L"content");
if (name == L"cover")
coverId = content;
}
// items
for ( int i=1; i<50000; i++ ) {
ldomNode * item = doc->nodeFromXPath( lString16(L"package/manifest/item[") + lString16::itoa(i) + L"]" );
if ( !item )
break;
lString16 href = item->getAttributeValue(L"href");
lString16 id = item->getAttributeValue(L"id");
if ( !href.empty() && !id.empty() ) {
if (id == coverId) {
// coverpage file
lString16 coverFileName = codeBase + href;
CRLog::info("EPUB coverpage file: %s", LCSTR(coverFileName));
coverPageImageStream = m_arc->OpenStream(coverFileName.c_str(), LVOM_READ);
}
}
}
delete doc;
}
return coverPageImageStream;
}
virtual LVStreamRef openStream() {
// return region of base stream
return LVStreamRef( new LVStreamFragment( _stream, _startBlock, _size ) );
}
virtual LVStreamRef openStream() {
// TODO: implement stream creation
return LVStreamRef();
}
