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Create CFile.prototype["getShapes"]

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This commit is contained in:
Svetlana Kulikova
2024-03-04 17:08:42 +03:00
parent 29852ddf25
commit 583f7b0d0c
11 changed files with 121 additions and 21 deletions
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39
PdfFile/PdfReader.cpp
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@ -1565,16 +1565,49 @@ BYTE* CPdfReader::GetShapes(int nPageIndex)
if (!pPageRef)
return NULL;
Object oPageObj;
Object oPageObj, oMetaOForm, oID;
XRef* xref = m_pPDFDocument->getXRef();
if (!xref->fetch(pPageRef->num, pPageRef->gen, &oPageObj)->isDict())
if (!xref->fetch(pPageRef->num, pPageRef->gen, &oPageObj)->isDict() || !oPageObj.dictLookup("MetaOForm", &oMetaOForm)->isDict("MetaOForm") || !oMetaOForm.dictLookup("ID", &oID)->isString())
{
oPageObj.free();
oPageObj.free(); oMetaOForm.free(); oID.free();
return NULL;
}
oPageObj.free();
Object oTID, oID2;
Object* pTrailerDict = xref->getTrailerDict();
if (!pTrailerDict || !pTrailerDict->dictLookup("ID", &oTID)->isArray() || !oTID.arrayGet(1, &oID2)->isString() || oID2.getString()->cmp(oID.getString()) != 0)
{
oMetaOForm.free(); oID.free(); oTID.free(); oID2.free();
return NULL;
}
oTID.free(); oID.free(); oID2.free();
Object oMetadata;
if (!oMetaOForm.dictLookup("Metadata", &oMetadata)->isArray())
{
oMetaOForm.free(); oMetadata.free();
return NULL;
}
oMetaOForm.free();
NSWasm::CData oRes;
oRes.SkipLen();
int nMetadataLength = oMetadata.arrayGetLength();
oRes.AddInt(nMetadataLength);
for (int i = 0; i < nMetadataLength; ++i)
{
Object oMetaStr;
std::string sStr;
if (oMetadata.arrayGet(i, &oMetaStr)->isString())
{
TextString* s = new TextString(oMetaStr.getString());
sStr = NSStringExt::CConverter::GetUtf8FromUTF32(s->getUnicode(), s->getLength());
delete s;
}
oRes.WriteString(sStr);
}
oRes.WriteLen();
BYTE* bRes = oRes.GetBuffer();