PdfObject* PdfContents::GetContentsForAppending() const
{
// if ( mContObj->GetDataType() == ePdfDataType_Stream ||
// mContObj->GetDataType() == ePdfDataType_Dictionary ) {
// Use PdfObject::HasStream() instead of the datatype ePdfDataType_Stream
// as large parts of the code rely on all PdfObjects having the datatype
// ePdfDataType_Dictionary wether they have a stream or not
if( mContObj->GetDataType() == ePdfDataType_Dictionary ) {
return mContObj; // just return the stream itself
} else if ( mContObj->GetDataType() == ePdfDataType_Array ) {
/*
Create a new stream, add it to the array, return it
*/
PdfObject* newStm = mContObj->GetOwner()->CreateObject();
newStm->GetStream();
PdfReference pdfr( newStm->Reference().ObjectNumber(), newStm->Reference().GenerationNumber() );
PdfArray& cArr = mContObj->GetArray();
cArr.push_back( pdfr );
return newStm;
} else {
PODOFO_RAISE_ERROR( ePdfError_InvalidDataType );
}
}
void PdfFontTrueType::EmbedFontFile( PdfObject* pDescriptor )
{
PdfObject* pContents;
pdf_long lSize = 0;
m_bWasEmbedded = true;
pContents = this->GetObject()->GetOwner()->CreateObject();
if( !pContents )
{
PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
}
pDescriptor->GetDictionary().AddKey( "FontFile2", pContents->Reference() );
// if the data was loaded from memory - use it from there
// otherwise, load from disk
if ( m_pMetrics->GetFontDataLen() && m_pMetrics->GetFontData() )
{
// FIXME const_cast<char*> is dangerous if string literals may ever be passed
char* pBuffer = const_cast<char*>( m_pMetrics->GetFontData() );
lSize = m_pMetrics->GetFontDataLen();
// Set Length1 before creating the stream
// as PdfStreamedDocument does not allow
// adding keys to an object after a stream was written
pContents->GetDictionary().AddKey( "Length1", PdfVariant( static_cast<pdf_int64>(lSize) ) );
pContents->GetStream()->Set( pBuffer, lSize );
}
else
{
PdfFileInputStream stream( m_pMetrics->GetFilename() );
lSize = stream.GetFileLength();
// Set Length1 before creating the stream
// as PdfStreamedDocument does not allow
// adding keys to an object after a stream was written
pContents->GetDictionary().AddKey( "Length1", PdfVariant( static_cast<pdf_int64>(lSize) ) );
pContents->GetStream()->Set( &stream );
}
}
void PdfFontType1::EmbedFontFile( PdfObject* pDescriptor )
{
pdf_long lSize = 0;
pdf_long lLength1 = 0L;
pdf_long lLength2 = 0L;
pdf_long lLength3 = 0L;
PdfObject* pContents;
const char* pBuffer;
char* pAllocated = NULL;
m_bWasEmbedded = true;
pContents = m_pObject->GetOwner()->CreateObject();
if( !pContents )
{
PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
}
pDescriptor->GetDictionary().AddKey( "FontFile", pContents->Reference() );
// if the data was loaded from memory - use it from there
// otherwise, load from disk
if ( m_pMetrics->GetFontDataLen() && m_pMetrics->GetFontData() )
{
pBuffer = m_pMetrics->GetFontData();
lSize = m_pMetrics->GetFontDataLen();
}
else
{
FILE* hFile = fopen( m_pMetrics->GetFilename(), "rb" );
if( !hFile )
{
PODOFO_RAISE_ERROR_INFO( ePdfError_FileNotFound, m_pMetrics->GetFilename() );
}
fseek( hFile, 0L, SEEK_END );
lSize = ftell( hFile );
fseek( hFile, 0L, SEEK_SET );
pAllocated = static_cast<char*>(malloc( sizeof(char) * lSize ));
if( !pAllocated )
{
fclose( hFile );
PODOFO_RAISE_ERROR( ePdfError_OutOfMemory );
}
fread( pAllocated, sizeof(char), lSize, hFile );
fclose( hFile );
pBuffer = pAllocated;
}
// Remove binary segment headers from pfb
unsigned char *pBinary = reinterpret_cast<unsigned char*>(const_cast<char*>(pBuffer));
while( *pBinary == 0x80 ) // binary segment header
{
const int cHeaderLength = 6;
int iSegmentType = pBinary[1]; // binary segment type
long lSegmentLength = 0L;
long lSegmentDelta = static_cast<long>(&pBuffer[lSize] - reinterpret_cast<const char*>(pBinary) );
switch( iSegmentType )
{
case 1: // ASCII text
lSegmentLength = pBinary[2] + // little endian
pBinary[3] * 256L +
pBinary[4] * 65536L +
pBinary[5] * 16777216L;
if( lLength1 == 0L )
lLength1 = lSegmentLength;
else
lLength3 = lSegmentLength;
lSize -= cHeaderLength;
memmove( pBinary, &pBinary[cHeaderLength], lSegmentDelta );
pBinary = &pBinary[lSegmentLength];
break;
case 2: // binary data
lSegmentLength = pBinary[2] + // little endian
pBinary[3] * 256L +
pBinary[4] * 65536L +
pBinary[5] * 16777216L;
lLength2 = lSegmentLength;
lSize -= cHeaderLength;
memmove( pBinary, &pBinary[cHeaderLength], lSegmentDelta );
pBinary = &pBinary[lSegmentLength];
break;
case 3: // end-of-file
pContents->GetStream()->Set( pBuffer, lSize - 2L );
if( pAllocated )
free( pAllocated );
pContents->GetDictionary().AddKey( "Length1", PdfVariant( static_cast<long long>(lLength1) ) );
pContents->GetDictionary().AddKey( "Length2", PdfVariant( static_cast<long long>(lLength2) ) );
pContents->GetDictionary().AddKey( "Length3", PdfVariant( static_cast<long long>(lLength3) ) );
return;
default:
break;
}
}
// Parse the font data buffer to get the values for length1, length2 and length3
lLength1 = FindInBuffer( "eexec", pBuffer, lSize );
if( lLength1 > 0 )
lLength1 += 6; // 6 == eexec + lf
else
lLength1 = 0;
if( lLength1 )
{
lLength2 = FindInBuffer( "cleartomark", pBuffer, lSize );
if( lLength2 > 0 )
lLength2 = lSize - lLength1 - 520; // 520 == 512 + strlen(cleartomark)
else
lLength1 = 0;
}
lLength3 = lSize - lLength2 - lLength1;
// TODO: Pdf Supports only Type1 fonts with binary encrypted sections and not the hex format
pContents->GetStream()->Set( pBuffer, lSize );
if( pAllocated )
free( pAllocated );
pContents->GetDictionary().AddKey( "Length1", PdfVariant( static_cast<long long>(lLength1) ) );
pContents->GetDictionary().AddKey( "Length2", PdfVariant( static_cast<long long>(lLength2) ) );
pContents->GetDictionary().AddKey( "Length3", PdfVariant( static_cast<long long>(lLength3) ) );
}