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Fix bug #64845

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Fixed search for cmap need - now also checks AcroForm, annots and widgets.
This commit is contained in:
Svetlana Kulikova
2023-10-26 15:57:26 +03:00
parent b3fde49cd8
commit 641fb754d7
1 changed files with 94 additions and 0 deletions
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94
PdfFile/PdfReader.cpp
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@ -186,6 +186,30 @@ bool scanFonts(Dict *pResources, PDFDoc *pDoc, const std::vector<std::string>& a
return false;
}
bool scanAPfonts(Object* oAnnot, PDFDoc *pDoc, const std::vector<std::string>& arrCMap)
{
Object oAP;
if (oAnnot->dictLookup("AP", &oAP)->isDict())
{
Object oAPi, oRes;
#define SCAN_AP_VIEW(sName)\
{\
if (oAP.dictLookup(sName, &oAPi)->isStream() && oAPi.streamGetDict()->lookup("Resources", &oRes)->isDict() && scanFonts(oRes.getDict(), pDoc, arrCMap, 0))\
{\
oAPi.free(); oAP.free(); oRes.free();\
return true;\
}\
oAPi.free(); oRes.free();\
}
SCAN_AP_VIEW("N");
SCAN_AP_VIEW("D");
SCAN_AP_VIEW("R");
}
oAP.free();
return false;
}
bool CPdfReader::IsNeedCMap()
{
std::vector<std::string> arrCMap = {"GB-EUC-H", "GB-EUC-V", "GB-H", "GB-V", "GBpc-EUC-H", "GBpc-EUC-V", "GBK-EUC-H",
@ -217,7 +241,77 @@ bool CPdfReader::IsNeedCMap()
Dict* pResources = pPage->getResourceDict();
if (pResources && scanFonts(pResources, m_pPDFDocument, arrCMap, 0))
return true;
Object oAnnots;
if (pPage->getAnnots(&oAnnots)->isArray())
{
for (int i = 0, nNum = oAnnots.arrayGetLength(); i < nNum; ++i)
{
Object oAnnot;
if (!oAnnots.arrayGet(i, &oAnnot)->isDict())
{
oAnnot.free();
continue;
}
Object oDR;
if (oAnnot.dictLookup("DR", &oDR)->isDict() && scanFonts(oDR.getDict(), m_pPDFDocument, arrCMap, 0))
{
oDR.free(); oAnnot.free(); oAnnots.free();
return true;
}
oDR.free();
if (scanAPfonts(&oAnnot, m_pPDFDocument, arrCMap))
{
oAnnot.free(); oAnnots.free();
return true;
}
oAnnot.free();
}
}
oAnnots.free();
}
AcroForm* pAcroForms = m_pPDFDocument->getCatalog()->getForm();
if (pAcroForms)
{
Object oDR;
Object* oAcroForm = pAcroForms->getAcroFormObj();
if (oAcroForm->dictLookup("DR", &oDR)->isDict() && scanFonts(oDR.getDict(), m_pPDFDocument, arrCMap, 0))
{
oDR.free();
return true;
}
oDR.free();
for (int i = 0, nNum = pAcroForms->getNumFields(); i < nNum; ++i)
{
AcroFormField* pField = pAcroForms->getField(i);
Object oDR;
if (pField->getResources(&oDR)->isDict() && scanFonts(oDR.getDict(), m_pPDFDocument, arrCMap, 0))
{
oDR.free();
return true;
}
oDR.free();
Object oWidgetRef, oWidget;
pField->getFieldRef(&oWidgetRef);
oWidgetRef.fetch(m_pPDFDocument->getXRef(), &oWidget);
oWidgetRef.free();
if (scanAPfonts(&oWidget, m_pPDFDocument, arrCMap))
{
oWidget.free();
return true;
}
oWidget.free();
}
}
return false;
}
void CPdfReader::SetCMapMemory(BYTE* pData, DWORD nSizeData)