pengjunjie/core
1
0
Fork 1
mirror of https://github.com/ONLYOFFICE/core.git synced 2026-07-19 22:01:45 +08:00
Code Issues Packages Projects Releases Wiki Activity

fix linearized pdf

Browse Source
This commit is contained in:
Kulikova Svetlana
2022-04-25 11:02:32 +03:00
parent 2cc6ed350c
commit 5ffd7e9537
8 changed files with 46 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
PdfReader/PdfReader.cpp
View File

@ -51,6 +51,8 @@
#include "lib/xpdf/ImageOutputDev.h"
#include "lib/xpdf/TextString.h"
#include "lib/xpdf/SecurityHandler.h"
#include "lib/xpdf/Lexer.h"
#include "lib/xpdf/Parser.h"
#include "Src/RendererOutputDev.h"
#ifdef BUILDING_WASM_MODULE
@ -647,10 +649,14 @@ return 0;
}\
}\
std::wstring CPdfReader::GetInfo()
std::wstring CPdfReader::GetInfo(unsigned long nFileLength)
{
if (!m_pInternal->m_pPDFDocument)
return NULL;
XRef* xref = m_pInternal->m_pPDFDocument->getXRef();
BaseStream* str = m_pInternal->m_pPDFDocument->getBaseStream();
if (!xref || !str)
return NULL;
std::wstring sRes = L"{";
@ -690,7 +696,34 @@ return 0;
sRes += L",\"NumberOfPages\":";
sRes += std::to_wstring(GetPagesCount());
sRes += L",\"FastWebView\":";
sRes += m_pInternal->m_pPDFDocument->isLinearized() ? L"true" : L"false";
Object obj2, obj3, obj4, obj5, obj6;
bool bLinearized = false;
obj1.initNull();
Parser* parser = new Parser(xref, new Lexer(xref, str->makeSubStream(str->getStart(), gFalse, 0, &obj1)), gTrue);
parser->getObj(&obj1);
parser->getObj(&obj2);
parser->getObj(&obj3);
parser->getObj(&obj4);
if (obj1.isInt() && obj2.isInt() && obj3.isCmd("obj") && obj4.isDict())
{
obj4.dictLookup("Linearized", &obj5);
obj4.dictLookup("L", &obj6);
if (obj5.isNum() && obj5.getNum() > 0 && obj6.isNum())
{
unsigned long size = obj6.getNum();
bLinearized = size == nFileLength;
}
obj6.free();
obj5.free();
}
obj4.free();
obj3.free();
obj2.free();
obj1.free();
delete parser;
sRes += bLinearized ? L"true" : L"false";
sRes += L",\"Tagged\":";
sRes += m_pInternal->m_pPDFDocument->getStructTreeRoot()->isDict() ? L"true" : L"false";
sRes += L"}";