pengjunjie/core
1
0
Fork 1
mirror of https://github.com/ONLYOFFICE/core.git synced 2026-04-07 13:55:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

DocFormatReader - дешифрование + поддержка формата 95 года

Browse Source
This commit is contained in:
ElenaSubbotina
2016-06-26 17:37:17 +03:00
parent 0d261b8769
commit de899687bb
118 changed files with 3963 additions and 3492 deletions
Download Patch File Download Diff File Expand all files Collapse all files

254
ASCOfficeDocFile/DocDocxConverter/StringTable.h
View File

@ -39,127 +39,147 @@
namespace DocFileFormat
{
template<class T> class StringTable: public IVisitable
{
friend class CharacterPropertiesMapping;
friend class FontTableMapping;
friend class StyleSheetMapping;
friend class DocumentMapping;
template<class T> class StringTable: public IVisitable
{
friend class CharacterPropertiesMapping;
friend class FontTableMapping;
friend class StyleSheetMapping;
friend class DocumentMapping;
private:
ASCDocFormatUtils::Encoding _enc;
bool fExtend;
int cData;
unsigned short cbExtra;
vector<ByteStructure*> Data;
public:
virtual ~StringTable()
{
for ( vector<ByteStructure*>::iterator iter = this->Data.begin(); iter != this->Data.end(); iter++ )
{
RELEASEOBJECT( *iter );
}
}
StringTable( VirtualStreamReader *reader ):
_enc(ENCODING_INVALID_VALUE), fExtend(false), cData(0), cbExtra(0)
{
parse( reader, (unsigned int)reader->GetPosition() );
}
StringTable( POLE::Stream* tableStream, unsigned int fc, unsigned int lcb ):
_enc(ENCODING_INVALID_VALUE), fExtend(false), cData(0), cbExtra(0)
{
if ( lcb > 0 )
{
VirtualStreamReader reader( tableStream, fc );
bool fExtend;
int cbData;
unsigned short cbExtra;
parse( &reader, fc ) ;
}
}
std::vector<ByteStructure*> Data;
ByteStructure* operator [] ( unsigned int index ) const
{
if ( index < this->Data.size() )
{
return this->Data.at( index );
}
else
{
return NULL;
}
}
private:
void parse( VirtualStreamReader *reader, unsigned int fc )
{
if ( reader != NULL )
int code_page;
public:
virtual ~StringTable()
{
//read fExtend
if ( reader->ReadUInt16() == 0xFFFF )
{
//if the first 2 bytes are 0xFFFF the STTB contains unicode characters
this->fExtend = true;
_enc = ENCODING_UNICODE;
}
else
{
//else the STTB contains 1byte characters and the fExtend field is non-existend
//seek back to the beginning
this->fExtend = false;
_enc = ENCODING_WINDOWS_1251;
reader->Seek( (int)fc, 0/*STREAM_SEEK_SET*/ );
}
//read cData
long cDataStart = reader->GetPosition();
unsigned short c = reader->ReadUInt16();
if ( c != 0xFFFF )
{
//cData is a 2byte unsigned Integer and the read bytes are already cData
this->cData = (int)c;
}
else
{
//cData is a 4byte signed Integer, so we need to seek back
reader->Seek( (int)( fc + cDataStart ), 0/*STREAM_SEEK_SET*/ );
this->cData = reader->ReadInt32();
}
//read cbExtra
this->cbExtra = reader->ReadUInt16();
//read the strings and extra datas
for ( int i = 0; i < this->cData; i++ )
{
int cchData = 0;
int cbData = 0;
if ( this->fExtend )
{
cchData = (int)reader->ReadUInt16();
cbData = cchData * 2;
}
else
{
cchData = (int)reader->ReadByte();
cbData = cchData;
}
long posBeforeType = reader->GetPosition();
this->Data.push_back( T().ConstructObject( reader, cbData ) );
reader->Seek( (int)( posBeforeType + cbData ), 0/*STREAM_SEEK_SET */);
//skip the extra unsigned char
reader->ReadBytes( cbExtra, false );
}
for ( std::vector<ByteStructure*>::iterator iter = this->Data.begin(); iter != this->Data.end(); iter++ )
{
RELEASEOBJECT( *iter );
}
}
}
};
StringTable( VirtualStreamReader *reader, int code_page_ ):
code_page(code_page_), fExtend(false), cData(0), cbExtra(0)
{
parse( reader, (unsigned int)reader->GetPosition() );
}
StringTable( POLE::Stream* tableStream, unsigned int fc, unsigned int lcb, bool older ) :
code_page(1250), fExtend(false), cbData(0), cbExtra(0)
{
if ( lcb > 0 )
{
VirtualStreamReader reader( tableStream, fc, older);
parse( &reader, fc, lcb ) ;
}
}
ByteStructure* operator [] ( unsigned int index ) const
{
if ( index < this->Data.size() )
{
return this->Data.at( index );
}
else
{
return NULL;
}
}
private:
void parse( VirtualStreamReader *reader, unsigned int fc, unsigned int lcb = 0 )
{
if ( reader == NULL ) return;
if (fc > reader->GetSize()) return;
this->cbData = lcb;
int count_elements = 0;
//read fExtend
if ( reader->ReadUInt16() == 0xFFFF )
{
//if the first 2 bytes are 0xFFFF the STTB contains unicode characters
this->fExtend = true;
code_page = ENCODING_UTF16;
}
else
{
//else the STTB contains 1byte characters and the fExtend field is non-existend
//seek back to the beginning
this->fExtend = false;
code_page = ENCODING_WINDOWS_1250;
reader->Seek( (int)fc, 0/*STREAM_SEEK_SET*/ );
}
//read cData
long cDataStart = reader->GetPosition();
unsigned short c = reader->ReadUInt16();
if ( c != 0xFFFF )
{
if (reader->olderVersion)
this->cbData = (int)c; // all size
else
count_elements = c;
}
else
{
//cData is a 4byte signed Integer, so we need to seek back
reader->Seek( (int)( fc + cDataStart ), 0/*STREAM_SEEK_SET*/ );
this->cbData = reader->ReadInt32();
}
//read cbExtra
if (reader->olderVersion == false)
{
this->cbExtra = reader->ReadUInt16();
}
if (lcb > 0 && (lcb/* - fc*/) != this->cbData + this->cbExtra)
{
//????
}
while(true) //read the strings and extra datas
{
if (reader->GetPosition() >= fc + this->cbData + this->cbExtra && count_elements < 1)
break; //1995 and older
if (this->Data.size() == count_elements && count_elements > 0)
break; //1997 and newer
int cchData = 0;
int cbData = 0;
if ( this->fExtend )
{
cchData = (int)reader->ReadUInt16();
cbData = cchData * 2;
}
else
{
cchData = (int)reader->ReadByte();
cbData = cchData;
}
long posBeforeType = reader->GetPosition();
this->Data.push_back( T().ConstructObject( reader, cbData ) );
reader->Seek( (int)( posBeforeType + cbData ), 0/*STREAM_SEEK_SET */);
reader->ReadBytes( cbExtra, false );//skip the extra unsigned char
}
}
};
}