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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <pdfparse.hxx>
+
+// boost using obsolete stuff
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4996)
+#pragma warning(disable:4503)
+#endif
+
+// workaround windows compiler: do not include multi_pass.hpp
+#include <boost/spirit/include/classic_core.hpp>
+#include <boost/spirit/include/classic_utility.hpp>
+#include <boost/spirit/include/classic_error_handling.hpp>
+#include <boost/spirit/include/classic_file_iterator.hpp>
+#include <boost/bind/bind.hpp>
+
+#include <string.h>
+
+#include <o3tl/safeint.hxx>
+#include <rtl/strbuf.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+
+// disable warnings again because someone along the line has enabled them
+// (we have included boost headers, what did you expect?)
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:4996)
+#pragma warning(disable:4503)
+#endif
+
+
+using namespace boost::spirit::classic;
+using namespace pdfparse;
+
+namespace {
+
+class StringEmitContext : public EmitContext
+{
+ OStringBuffer m_aBuf;
+ public:
+ StringEmitContext() : m_aBuf(256) {}
+
+ virtual bool write( const void* pBuf, unsigned int nLen ) noexcept override
+ {
+ m_aBuf.append( static_cast<const char*>(pBuf), nLen );
+ return true;
+ }
+ virtual unsigned int getCurPos() noexcept override { return m_aBuf.getLength(); }
+ virtual bool copyOrigBytes( unsigned int nOrigOffset, unsigned int nLen ) noexcept override
+ { return (nOrigOffset+nLen < o3tl::make_unsigned(m_aBuf.getLength()) ) &&
+ write( m_aBuf.getStr() + nOrigOffset, nLen ); }
+ virtual unsigned int readOrigBytes( unsigned int nOrigOffset, unsigned int nLen, void* pBuf ) noexcept override
+ {
+ if( nOrigOffset+nLen < o3tl::make_unsigned(m_aBuf.getLength()) )
+ {
+ memcpy( pBuf, m_aBuf.getStr()+nOrigOffset, nLen );
+ return nLen;
+ }
+ return 0;
+ }
+
+ OString getString() { return m_aBuf.makeStringAndClear(); }
+};
+
+template< class iteratorT >
+class PDFGrammar : public grammar< PDFGrammar<iteratorT> >
+{
+public:
+
+ explicit PDFGrammar( const iteratorT& first )
+ : m_fDouble( 0.0 ), m_aGlobalBegin( first ) {}
+ ~PDFGrammar()
+ {
+ if( !m_aObjectStack.empty() )
+ delete m_aObjectStack.front();
+ }
+
+ double m_fDouble;
+ std::vector< unsigned int > m_aUIntStack;
+ std::vector< PDFEntry* > m_aObjectStack;
+ OString m_aErrorString;
+ iteratorT m_aGlobalBegin;
+
+public:
+ struct pdf_string_parser
+ {
+ typedef nil_t result_t;
+ template <typename ScannerT>
+ std::ptrdiff_t
+ operator()(ScannerT const& scan, result_t&) const
+ {
+ std::ptrdiff_t len = 0;
+
+ int nBraceLevel = 0;
+ while( ! scan.at_end() )
+ {
+ char c = *scan;
+ if( c == ')' )
+ {
+ nBraceLevel--;
+ if( nBraceLevel < 0 )
+ break;
+ }
+ else if( c == '(' )
+ nBraceLevel++;
+ else if( c == '\\' ) // ignore escaped braces
+ {
+ ++len;
+ ++scan.first; // tdf#63054: avoid skipping spaces
+ if( scan.first == scan.last ) // tdf#63054: avoid skipping spaces
+ break;
+ }
+ ++len;
+ ++scan;
+ }
+ return scan.at_end() ? -1 : len;
+ }
+ };
+
+ template< typename ScannerT >
+ struct definition
+ {
+ explicit definition( const PDFGrammar<iteratorT>& rSelf )
+ {
+ using namespace boost::placeholders;
+
+ PDFGrammar<iteratorT>* pSelf = const_cast< PDFGrammar<iteratorT>* >( &rSelf );
+
+ // workaround workshop compiler: comment_p doesn't work
+ // comment = comment_p("%")[boost::bind(&PDFGrammar::pushComment, pSelf, _1, _2 )];
+ comment = lexeme_d[ (ch_p('%') >> *(~ch_p('\r') & ~ch_p('\n')) >> eol_p)[boost::bind(&PDFGrammar::pushComment, pSelf, _1, _2 )] ];
+
+ boolean = (str_p("true") | str_p("false"))[boost::bind(&PDFGrammar::pushBool, pSelf, _1, _2)];
+
+ // workaround workshop compiler: confix_p doesn't work
+ //stream = confix_p( "stream", *anychar_p, "endstream" )[boost::bind(&PDFGrammar::emitStream, pSelf, _1, _2 )];
+ stream = (str_p("stream") >> *(anychar_p - str_p("endstream")) >> str_p("endstream"))[boost::bind(&PDFGrammar::emitStream, pSelf, _1, _2 )];
+
+ name = lexeme_d[
+ ch_p('/')
+ >> (*(anychar_p-chset_p("\t\n\f\r ()<>[]{}/%")-ch_p('\0')))
+ [boost::bind(&PDFGrammar::pushName, pSelf, _1, _2)] ];
+
+ // workaround workshop compiler: confix_p doesn't work
+ //stringtype = ( confix_p("(",*anychar_p, ")") |
+ // confix_p("<",*xdigit_p, ">") )
+ // [boost::bind(&PDFGrammar::pushString,pSelf, _1, _2)];
+
+ stringtype = ( ( ch_p('(') >> functor_parser<pdf_string_parser>() >> ch_p(')') ) |
+ ( ch_p('<') >> *xdigit_p >> ch_p('>') ) )
+ [boost::bind(&PDFGrammar::pushString,pSelf, _1, _2)];
+
+ null_object = str_p( "null" )[boost::bind(&PDFGrammar::pushNull, pSelf, _1, _2)];
+
+ #ifdef USE_ASSIGN_ACTOR
+ objectref = ( uint_p[push_back_a(pSelf->m_aUIntStack)]
+ >> uint_p[push_back_a(pSelf->m_aUIntStack)]
+ >> ch_p('R')
+ >> eps_p
+ )[boost::bind(&PDFGrammar::pushObjectRef, pSelf, _1, _2)];
+ #else
+ objectref = ( uint_p[boost::bind(&PDFGrammar::push_back_action_uint, pSelf, _1)]
+ >> uint_p[boost::bind(&PDFGrammar::push_back_action_uint, pSelf, _1)]
+ >> ch_p('R')
+ >> eps_p
+ )[boost::bind(&PDFGrammar::pushObjectRef, pSelf, _1, _2)];
+ #endif
+
+ #ifdef USE_ASSIGN_ACTOR
+ simple_type = objectref | name |
+ ( real_p[assign_a(pSelf->m_fDouble)] >> eps_p )
+ [boost::bind(&PDFGrammar::pushDouble, pSelf, _1, _2)]
+ | stringtype | boolean | null_object;
+ #else
+ simple_type = objectref | name |
+ ( real_p[boost::bind(&PDFGrammar::assign_action_double, pSelf, _1)] >> eps_p )
+ [boost::bind(&PDFGrammar::pushDouble, pSelf, _1, _2)]
+ | stringtype | boolean | null_object;
+ #endif
+
+ dict_begin = str_p( "<<" )[boost::bind(&PDFGrammar::beginDict, pSelf, _1, _2)];
+ dict_end = str_p( ">>" )[boost::bind(&PDFGrammar::endDict, pSelf, _1, _2)];
+
+ array_begin = str_p("[")[boost::bind(&PDFGrammar::beginArray,pSelf, _1, _2)];
+ array_end = str_p("]")[boost::bind(&PDFGrammar::endArray,pSelf, _1, _2)];
+
+ #ifdef USE_ASSIGN_ACTOR
+ object_begin= uint_p[push_back_a(pSelf->m_aUIntStack)]
+ >> uint_p[push_back_a(pSelf->m_aUIntStack)]
+ >> str_p("obj" )[boost::bind(&PDFGrammar::beginObject, pSelf, _1, _2)];
+ #else
+ object_begin= uint_p[boost::bind(&PDFGrammar::push_back_action_uint, pSelf, _1)]
+ >> uint_p[boost::bind(&PDFGrammar::push_back_action_uint, pSelf, _1)]
+ >> str_p("obj" )[boost::bind(&PDFGrammar::beginObject, pSelf, _1, _2)];
+ #endif
+ object_end = str_p( "endobj" )[boost::bind(&PDFGrammar::endObject, pSelf, _1, _2)];
+
+ xref = str_p( "xref" ) >> uint_p >> uint_p
+ >> lexeme_d[
+ +( repeat_p(10)[digit_p]
+ >> blank_p
+ >> repeat_p(5)[digit_p]
+ >> blank_p
+ >> ( ch_p('n') | ch_p('f') )
+ >> repeat_p(2)[space_p]
+ ) ];
+
+ dict_element= dict_begin | comment | simple_type
+ | array_begin | array_end | dict_end;
+
+ object = object_begin
+ >> *dict_element
+ >> !stream
+ >> object_end;
+
+ trailer = str_p( "trailer" )[boost::bind(&PDFGrammar::beginTrailer,pSelf,_1,_2)]
+ >> *dict_element
+ >> str_p("startxref")
+ >> uint_p
+ >> str_p("%%EOF")[boost::bind(&PDFGrammar::endTrailer,pSelf,_1,_2)];
+
+ #ifdef USE_ASSIGN_ACTOR
+ pdfrule = ! (lexeme_d[
+ str_p( "%PDF-" )
+ >> uint_p[push_back_a(pSelf->m_aUIntStack)]
+ >> ch_p('.')
+ >> uint_p[push_back_a(pSelf->m_aUIntStack)]
+ >> *((~ch_p('\r') & ~ch_p('\n')))
+ >> eol_p
+ ])[boost::bind(&PDFGrammar::haveFile,pSelf, _1, _2)]
+ >> *( comment | object | ( xref >> trailer ) );
+ #else
+ pdfrule = ! (lexeme_d[
+ str_p( "%PDF-" )
+ >> uint_p[boost::bind(&PDFGrammar::push_back_action_uint, pSelf, _1)]
+ >> ch_p('.')
+ >> uint_p[boost::bind(&PDFGrammar::push_back_action_uint, pSelf, _1)]
+ >> *(~ch_p('\r') & ~ch_p('\n'))
+ >> eol_p
+ ])[boost::bind(&PDFGrammar::haveFile,pSelf, _1, _2)]
+ >> *( comment | object | ( xref >> trailer ) );
+ #endif
+ }
+ rule< ScannerT > comment, stream, boolean, name, stringtype, null_object, simple_type,
+ objectref, array, value, dict_element, dict_begin, dict_end,
+ array_begin, array_end, object, object_begin, object_end,
+ xref, trailer, pdfrule;
+
+ const rule< ScannerT >& start() const { return pdfrule; }
+ };
+
+ #ifndef USE_ASSIGN_ACTOR
+ void push_back_action_uint( unsigned int i )
+ {
+ m_aUIntStack.push_back( i );
+ }
+ void assign_action_double( double d )
+ {
+ m_fDouble = d;
+ }
+ #endif
+
+ static void parseError( const char* pMessage, iteratorT pLocation )
+ {
+ throw_( pLocation, pMessage );
+ }
+
+ OString iteratorToString( iteratorT first, iteratorT last ) const
+ {
+ OStringBuffer aStr( 32 );
+ while( first != last )
+ {
+ aStr.append( *first );
+ ++first;
+ }
+ return aStr.makeStringAndClear();
+ }
+
+ void haveFile( iteratorT pBegin, SAL_UNUSED_PARAMETER iteratorT /*pEnd*/ )
+ {
+ if( m_aObjectStack.empty() )
+ {
+ PDFFile* pFile = new PDFFile();
+ pFile->m_nMinor = m_aUIntStack.back();
+ m_aUIntStack.pop_back();
+ pFile->m_nMajor = m_aUIntStack.back();
+ m_aUIntStack.pop_back();
+ m_aObjectStack.push_back( pFile );
+ }
+ else
+ parseError( "found file header in unusual place", pBegin );
+ }
+
+ void pushComment( iteratorT first, iteratorT last )
+ {
+ // add a comment to the current stack element
+ PDFComment* pComment =
+ new PDFComment(iteratorToString(first,last));
+ if( m_aObjectStack.empty() )
+ m_aObjectStack.push_back( new PDFPart() );
+ PDFContainer* pContainer = dynamic_cast<PDFContainer*>(m_aObjectStack.back());
+ if( pContainer == nullptr )
+ parseError( "comment without container", first );
+ pContainer->m_aSubElements.emplace_back( pComment );
+ }
+
+ void insertNewValue( std::unique_ptr<PDFEntry> pNewValue, iteratorT pPos )
+ {
+ PDFContainer* pContainer = nullptr;
+ const char* pMsg = nullptr;
+ if( ! m_aObjectStack.empty() )
+ {
+ pContainer = dynamic_cast<PDFContainer*>(m_aObjectStack.back());
+ if (pContainer)
+ {
+ if( dynamic_cast<PDFDict*>(pContainer) == nullptr &&
+ dynamic_cast<PDFArray*>(pContainer) == nullptr )
+ {
+ PDFObject* pObj = dynamic_cast<PDFObject*>(pContainer);
+ if( pObj )
+ {
+ if( pObj->m_pObject == nullptr )
+ pObj->m_pObject = pNewValue.get();
+ else
+ {
+ pMsg = "second value for object";
+ pContainer = nullptr;
+ }
+ }
+ else if( dynamic_cast<PDFDict*>(pNewValue.get()) )
+ {
+ PDFTrailer* pTrailer = dynamic_cast<PDFTrailer*>(pContainer);
+ if( pTrailer )
+ {
+ if( pTrailer->m_pDict == nullptr )
+ pTrailer->m_pDict = dynamic_cast<PDFDict*>(pNewValue.get());
+ else
+ pContainer = nullptr;
+ }
+ else
+ pContainer = nullptr;
+ }
+ else
+ pContainer = nullptr;
+ }
+ }
+ }
+ if( pContainer )
+ pContainer->m_aSubElements.emplace_back( std::move(pNewValue) );
+ else
+ {
+ if( ! pMsg )
+ {
+ if( dynamic_cast<PDFContainer*>(pNewValue.get()) )
+ pMsg = "array without container";
+ else
+ pMsg = "value without container";
+ }
+ parseError( pMsg, pPos );
+ }
+ }
+
+ void pushName( iteratorT first, iteratorT last )
+ {
+ insertNewValue( std::make_unique<PDFName>(iteratorToString(first,last)), first );
+ }
+
+ void pushDouble( iteratorT first, SAL_UNUSED_PARAMETER iteratorT /*last*/ )
+ {
+ insertNewValue( std::make_unique<PDFNumber>(m_fDouble), first );
+ }
+
+ void pushString( iteratorT first, iteratorT last )
+ {
+ insertNewValue( std::make_unique<PDFString>(iteratorToString(first,last)), first );
+ }
+
+ void pushBool( iteratorT first, iteratorT last )
+ {
+ insertNewValue( std::make_unique<PDFBool>( last-first == 4 ), first );
+ }
+
+ void pushNull( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ insertNewValue( std::make_unique<PDFNull>(), first );
+ }
+
+
+ void beginObject( iteratorT first, SAL_UNUSED_PARAMETER iteratorT /*last*/ )
+ {
+ if( m_aObjectStack.empty() )
+ m_aObjectStack.push_back( new PDFPart() );
+
+ unsigned int nGeneration = m_aUIntStack.back();
+ m_aUIntStack.pop_back();
+ unsigned int nObject = m_aUIntStack.back();
+ m_aUIntStack.pop_back();
+
+ PDFObject* pObj = new PDFObject( nObject, nGeneration );
+ pObj->m_nOffset = first - m_aGlobalBegin;
+
+ PDFContainer* pContainer = dynamic_cast<PDFContainer*>(m_aObjectStack.back());
+ if( pContainer &&
+ ( dynamic_cast<PDFFile*>(pContainer) ||
+ dynamic_cast<PDFPart*>(pContainer) ) )
+ {
+ pContainer->m_aSubElements.emplace_back( pObj );
+ m_aObjectStack.push_back( pObj );
+ }
+ else
+ parseError( "object in wrong place", first );
+ }
+
+ void endObject( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ if( m_aObjectStack.empty() )
+ parseError( "endobj without obj", first );
+ else if( dynamic_cast<PDFObject*>(m_aObjectStack.back()) == nullptr )
+ parseError( "spurious endobj", first );
+ else
+ m_aObjectStack.pop_back();
+ }
+
+ void pushObjectRef( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ unsigned int nGeneration = m_aUIntStack.back();
+ m_aUIntStack.pop_back();
+ unsigned int nObject = m_aUIntStack.back();
+ m_aUIntStack.pop_back();
+ insertNewValue( std::make_unique<PDFObjectRef>(nObject,nGeneration), first );
+ }
+
+ void beginDict( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ PDFDict* pDict = new PDFDict();
+ pDict->m_nOffset = first - m_aGlobalBegin;
+
+ insertNewValue( std::unique_ptr<PDFEntry>(pDict), first );
+ // will not come here if insertion fails (exception)
+ m_aObjectStack.push_back( pDict );
+ }
+ void endDict( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ PDFDict* pDict = nullptr;
+ if( m_aObjectStack.empty() )
+ parseError( "dictionary end without begin", first );
+ else if( (pDict = dynamic_cast<PDFDict*>(m_aObjectStack.back())) == nullptr )
+ parseError( "spurious dictionary end", first );
+ else
+ m_aObjectStack.pop_back();
+
+ PDFEntry* pOffender = pDict->buildMap();
+ if( pOffender )
+ {
+ StringEmitContext aCtx;
+ aCtx.write( "offending dictionary element: ", 30 );
+ pOffender->emit( aCtx );
+ m_aErrorString = aCtx.getString();
+ parseError( m_aErrorString.getStr(), first );
+ }
+ }
+
+ void beginArray( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ PDFArray* pArray = new PDFArray();
+ pArray->m_nOffset = first - m_aGlobalBegin;
+
+ insertNewValue( std::unique_ptr<PDFEntry>(pArray), first );
+ // will not come here if insertion fails (exception)
+ m_aObjectStack.push_back( pArray );
+ }
+
+ void endArray( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ if( m_aObjectStack.empty() )
+ parseError( "array end without begin", first );
+ else if( dynamic_cast<PDFArray*>(m_aObjectStack.back()) == nullptr )
+ parseError( "spurious array end", first );
+ else
+ m_aObjectStack.pop_back();
+ }
+
+ void emitStream( iteratorT first, iteratorT last )
+ {
+ if( m_aObjectStack.empty() )
+ parseError( "stream without object", first );
+ PDFObject* pObj = dynamic_cast<PDFObject*>(m_aObjectStack.back());
+ if( pObj && pObj->m_pObject )
+ {
+ if( pObj->m_pStream )
+ parseError( "multiple streams in object", first );
+
+ PDFDict* pDict = dynamic_cast<PDFDict*>(pObj->m_pObject);
+ if( pDict )
+ {
+ PDFStream* pStream = new PDFStream( first - m_aGlobalBegin, last - m_aGlobalBegin, pDict );
+
+ pObj->m_pStream = pStream;
+ pObj->m_aSubElements.emplace_back( pStream );
+ }
+ }
+ else
+ parseError( "stream without object", first );
+ }
+
+ void beginTrailer( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ if( m_aObjectStack.empty() )
+ m_aObjectStack.push_back( new PDFPart() );
+
+ PDFTrailer* pTrailer = new PDFTrailer();
+ pTrailer->m_nOffset = first - m_aGlobalBegin;
+
+ PDFContainer* pContainer = dynamic_cast<PDFContainer*>(m_aObjectStack.back());
+ if( pContainer &&
+ ( dynamic_cast<PDFFile*>(pContainer) ||
+ dynamic_cast<PDFPart*>(pContainer) ) )
+ {
+ pContainer->m_aSubElements.emplace_back( pTrailer );
+ m_aObjectStack.push_back( pTrailer );
+ }
+ else
+ parseError( "trailer in wrong place", first );
+ }
+
+ void endTrailer( iteratorT first, SAL_UNUSED_PARAMETER iteratorT )
+ {
+ if( m_aObjectStack.empty() )
+ parseError( "%%EOF without trailer", first );
+ else if( dynamic_cast<PDFTrailer*>(m_aObjectStack.back()) == nullptr )
+ parseError( "spurious %%EOF", first );
+ else
+ m_aObjectStack.pop_back();
+ }
+};
+
+}
+
+#ifdef _WIN32
+std::unique_ptr<PDFEntry> PDFReader::read( const char* pBuffer, unsigned int nLen )
+{
+ PDFGrammar<const char*> aGrammar( pBuffer );
+
+ try
+ {
+#if OSL_DEBUG_LEVEL > 0
+ boost::spirit::classic::parse_info<const char*> aInfo =
+#endif
+ boost::spirit::classic::parse( pBuffer,
+ pBuffer+nLen,
+ aGrammar,
+ boost::spirit::classic::space_p );
+#if OSL_DEBUG_LEVEL > 0
+ SAL_INFO("sdext.pdfimport.pdfparse", "parseinfo: stop = " << aInfo.stop << " (buff=" << pBuffer << ", offset = " << aInfo.stop - pBuffer << "), hit = " << (aInfo.hit ? OUString("true") : OUString("false")) << ", full = " << (aInfo.full ? OUString("true") : OUString("false")) << ", length = " << static_cast<int>(aInfo.length) );
+#endif
+ }
+ catch( const parser_error<const char*, const char*>& rError )
+ {
+#if OSL_DEBUG_LEVEL > 0
+ OString aTmp;
+ unsigned int nElem = aGrammar.m_aObjectStack.size();
+ for( unsigned int i = 0; i < nElem; i++ )
+ aTmp += OString::Concat(" ") + typeid( *(aGrammar.m_aObjectStack[i]) ).name();
+
+ SAL_WARN("sdext.pdfimport.pdfparse", "parse error: " << rError.descriptor << " at buffer pos " << rError.where - pBuffer << ", object stack: " << aTmp);
+#else
+ (void)rError;
+#endif
+ }
+
+ std::unique_ptr<PDFEntry> pRet;
+ unsigned int nEntries = aGrammar.m_aObjectStack.size();
+ if( nEntries == 1 )
+ {
+ pRet.reset(aGrammar.m_aObjectStack.back());
+ aGrammar.m_aObjectStack.pop_back();
+ }
+#if OSL_DEBUG_LEVEL > 0
+ else if( nEntries > 1 )
+ SAL_WARN("sdext.pdfimport.pdfparse", "error got " << nEntries << " stack objects in parse" );
+#endif
+
+ return pRet;
+}
+#endif
+
+std::unique_ptr<PDFEntry> PDFReader::read( const char* pFileName )
+{
+#ifdef _WIN32
+ /* #i106583#
+ since converting to boost 1.39 file_iterator does not work anymore on all Windows systems
+ C++ stdlib istream_iterator does not allow "-" apparently
+ using spirit 2.0 doesn't work in our environment with the MSC
+
+ So for the time being bite the bullet and read the whole file.
+ FIXME: give Spirit 2.x another try when we upgrade boost again.
+ */
+ std::unique_ptr<PDFEntry> pRet;
+ FILE* fp = fopen( pFileName, "rb" );
+ if( fp )
+ {
+ fseek( fp, 0, SEEK_END );
+ unsigned int nLen = static_cast<unsigned int>(ftell( fp ));
+ fseek( fp, 0, SEEK_SET );
+ char* pBuf = static_cast<char*>(std::malloc( nLen ));
+ if( pBuf )
+ {
+ fread( pBuf, 1, nLen, fp );
+ pRet = read( pBuf, nLen );
+ std::free( pBuf );
+ }
+ fclose( fp );
+ }
+ return pRet;
+#else
+ file_iterator<> file_start( pFileName );
+ if( ! file_start )
+ return nullptr;
+ file_iterator<> file_end = file_start.make_end();
+ PDFGrammar< file_iterator<> > aGrammar( file_start );
+
+ try
+ {
+#if OSL_DEBUG_LEVEL > 0
+ boost::spirit::classic::parse_info< file_iterator<> > aInfo =
+#endif
+ boost::spirit::classic::parse( file_start,
+ file_end,
+ aGrammar,
+ boost::spirit::classic::space_p );
+#if OSL_DEBUG_LEVEL > 0
+ SAL_INFO("sdext.pdfimport.pdfparse", "parseinfo: stop at offset = " << aInfo.stop - file_start << ", hit = " << (aInfo.hit ? "true" : "false") << ", full = " << (aInfo.full ? "true" : "false") << ", length = " << aInfo.length);
+#endif
+ }
+ catch( const parser_error< const char*, file_iterator<> >& rError )
+ {
+ SAL_WARN("sdext.pdfimport.pdfparse", "parse error: " << rError.descriptor << " at buffer pos " << rError.where - file_start);
+#if OSL_DEBUG_LEVEL > 0
+ OUStringBuffer aTmp;
+ unsigned int nElem = aGrammar.m_aObjectStack.size();
+ for( unsigned int i = 0; i < nElem; i++ )
+ {
+ aTmp.append(" ");
+ aTmp.appendAscii(typeid( *(aGrammar.m_aObjectStack[i]) ).name());
+ }
+ SAL_WARN("sdext.pdfimport.pdfparse", "parse error object stack: " << aTmp.makeStringAndClear());
+#endif
+ }
+
+ std::unique_ptr<PDFEntry> pRet;
+ unsigned int nEntries = aGrammar.m_aObjectStack.size();
+ if( nEntries == 1 )
+ {
+ pRet.reset(aGrammar.m_aObjectStack.back());
+ aGrammar.m_aObjectStack.pop_back();
+ }
+#if OSL_DEBUG_LEVEL > 0
+ else if( nEntries > 1 )
+ {
+ SAL_WARN("sdext.pdfimport.pdfparse", "error got " << nEntries << " stack objects in parse");
+ for( unsigned int i = 0; i < nEntries; i++ )
+ {
+ SAL_WARN("sdext.pdfimport.pdfparse", typeid(*aGrammar.m_aObjectStack[i]).name());
+ PDFObject* pObj = dynamic_cast<PDFObject*>(aGrammar.m_aObjectStack[i]);
+ if( pObj )
+ SAL_WARN("sdext.pdfimport.pdfparse", " -> object " << pObj->m_nNumber << " generation " << pObj->m_nGeneration);
+ else
+ SAL_WARN("sdext.pdfimport.pdfparse", "(type " << typeid(*aGrammar.m_aObjectStack[i]).name() << ")");
+ }
+ }
+#endif
+ return pRet;
+#endif // WIN32
+}
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */