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PdfReader.cpp
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PdfReader.cpp
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/*
* (c) Copyright Ascensio System SIA 2010-2019
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
* street, Riga, Latvia, EU, LV-1050.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
#define errMemory 12
#include "../DesktopEditor/graphics/pro/Graphics.h"
#include "PdfReader.h"
#include "Src/Adaptors.h"
#include "lib/xpdf/ErrorCodes.h"
#include "../Common/OfficeDefines.h"
#include "../DesktopEditor/raster/BgraFrame.h"
#include "../DesktopEditor/graphics/IRenderer.h"
#include "../DesktopEditor/common/Directory.h"
#include "../DesktopEditor/common/StringExt.h"
#include "../DesktopEditor/common/Path.h"
#include "../PdfWriter/PdfRenderer.h"
#include "lib/xpdf/PDFDoc.h"
#include "lib/xpdf/GlobalParams.h"
#include "lib/xpdf/ErrorCodes.h"
#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 "lib/xpdf/AcroForm.h"
#include "Src/RendererOutputDev.h"
#include "Src/Adaptors.h"
#ifdef BUILDING_WASM_MODULE
#include "../DesktopEditor/graphics/pro/js/wasm/src/serialize.h"
#include "lib/xpdf/Outline.h"
#include "lib/xpdf/Link.h"
#include "lib/xpdf/TextOutputDev.h"
#include "lib/goo/GList.h"
#include <vector>
#endif
namespace PdfReader
{
class CPdfReader_Private
{
public:
PDFDoc* m_pPDFDocument;
std::wstring m_wsTempFolder;
std::wstring m_wsCMapFolder;
std::wstring m_wsSrcPath;
NSFonts::IApplicationFonts* m_pAppFonts;
NSFonts::IFontManager* m_pFontManager;
CFontList* m_pFontList;
CPdfRenderer* m_pPdfWriter;
DWORD m_nFileLength;
void GetPageTree(XRef* xref, Object* pPagesRefObj)
{
if (!pPagesRefObj || !xref)
return;
Object typeDict, pagesObj;
if (!pPagesRefObj->isRef() || !pPagesRefObj->fetch(xref, &pagesObj) ||
!pagesObj.isDict() || !pagesObj.dictLookup("Type", &typeDict) ||
!typeDict.isName("Pages"))
{
pagesObj.free();
typeDict.free();
return;
}
typeDict.free();
Ref topPagesRef = pPagesRefObj->getRef();
std::wstring sPageTree = XMLConverter::DictToXml(L"PageTree", &pagesObj, topPagesRef.num, topPagesRef.gen);
m_pPdfWriter->CreatePageTree(sPageTree, topPagesRef.num);
Object kidsArrObj;
if (!pagesObj.dictLookup("Kids", &kidsArrObj) || !kidsArrObj.isArray())
{
pagesObj.free();
kidsArrObj.free();
return;
}
pagesObj.free();
for (int i = 0, count = kidsArrObj.arrayGetLength(); i < count; ++i)
{
Object kidRefObj;
if (kidsArrObj.arrayGetNF(i, &kidRefObj))
GetPageTree(xref, &kidRefObj);
kidRefObj.free();
}
kidsArrObj.free();
}
};
CPdfReader::CPdfReader(NSFonts::IApplicationFonts* pAppFonts)
{
m_pInternal = new CPdfReader_Private();
m_pInternal->m_wsTempFolder = L"";
m_pInternal->m_wsCMapFolder = L"";
m_pInternal->m_wsSrcPath = L"";
m_pInternal->m_pPDFDocument = NULL;
m_pInternal->m_pFontManager = NULL;
m_pInternal->m_pPdfWriter = NULL;
m_pInternal->m_nFileLength = 0;
globalParams = new GlobalParamsAdaptor(NULL);
#ifndef _DEBUG
globalParams->setErrQuiet(gTrue);
#endif
m_pInternal->m_pFontList = new CFontList();
m_pInternal->m_pAppFonts = pAppFonts;
// Создаем менеджер шрифтов с собственным кэшем
m_pInternal->m_pFontManager = pAppFonts->GenerateFontManager();
NSFonts::IFontsCache* pMeasurerCache = NSFonts::NSFontCache::Create();
pMeasurerCache->SetStreams(pAppFonts->GetStreams());
m_pInternal->m_pFontManager->SetOwnerCache(pMeasurerCache);
pMeasurerCache->SetCacheSize(1);
((GlobalParamsAdaptor*)globalParams)->SetFontManager(m_pInternal->m_pFontManager);
#ifndef BUILDING_WASM_MODULE
globalParams->setupBaseFonts(NULL);
#endif
#ifdef CMAP_USE_MEMORY
SetCMapMemory();
#endif
m_eError = errNone;
}
CPdfReader::~CPdfReader()
{
if (m_pInternal->m_pFontList)
{
m_pInternal->m_pFontList->Clear();
delete m_pInternal->m_pFontList;
}
m_pInternal->m_wsCMapFolder = L"";
if (!m_pInternal->m_wsTempFolder.empty())
{
NSDirectory::DeleteDirectory(m_pInternal->m_wsTempFolder);
m_pInternal->m_wsTempFolder = L"";
}
RELEASEOBJECT((m_pInternal->m_pPDFDocument));
RELEASEOBJECT((globalParams));
RELEASEINTERFACE((m_pInternal->m_pFontManager));
if (m_pInternal->m_pPdfWriter)
{
m_pInternal->m_pPdfWriter->Release();
m_pInternal->m_pPdfWriter = NULL;
}
}
bool CPdfReader::LoadFromFile(const std::wstring& wsSrcPath, const std::wstring& wsOptions,
const std::wstring& wsOwnerPassword, const std::wstring& wsUserPassword)
{
// TODO: Сейчас при загрузке каждой новой картинки мы пересоздаем
// FontManager, потому что сейчас в нем кэш без ограничения.
//------------------------------------------------------
RELEASEINTERFACE((m_pInternal->m_pFontManager));
m_pInternal->m_pFontManager = m_pInternal->m_pAppFonts->GenerateFontManager();
NSFonts::IFontsCache* pMeasurerCache = NSFonts::NSFontCache::Create();
pMeasurerCache->SetStreams(m_pInternal->m_pAppFonts->GetStreams());
m_pInternal->m_pFontManager->SetOwnerCache(pMeasurerCache);
pMeasurerCache->SetCacheSize(1);
((GlobalParamsAdaptor*)globalParams)->SetFontManager(m_pInternal->m_pFontManager);
//------------------------------------------------------
if (m_pInternal->m_pPDFDocument)
delete m_pInternal->m_pPDFDocument;
if (GetTempDirectory() == L"")
{
SetTempDirectory(NSDirectory::GetTempPath());
}
m_eError = errNone;
GString* owner_pswd = NSStrings::CreateString(wsOwnerPassword);
GString* user_pswd = NSStrings::CreateString(wsUserPassword);
// конвертим путь в utf8 - под виндой они сконвертят в юникод, а на остальных - так и надо
m_pInternal->m_wsSrcPath = wsSrcPath;
std::string sPathUtf8 = U_TO_UTF8(wsSrcPath);
m_pInternal->m_pPDFDocument = new PDFDoc((char*)sPathUtf8.c_str(), owner_pswd, user_pswd);
delete owner_pswd;
delete user_pswd;
NSFile::CFileBinary oFile;
if (oFile.OpenFile(wsSrcPath))
{
m_pInternal->m_nFileLength = oFile.GetFileSize();
oFile.CloseFile();
}
if (m_pInternal->m_pPDFDocument)
m_eError = m_pInternal->m_pPDFDocument->getErrorCode();
else
m_eError = errMemory;
if (!m_pInternal->m_pPDFDocument || !m_pInternal->m_pPDFDocument->isOk())
{
RELEASEOBJECT(m_pInternal->m_pPDFDocument);
return false;
}
m_pInternal->m_pFontList->Clear();
return true;
}
bool CPdfReader::LoadFromMemory(BYTE* data, DWORD length, const std::wstring& options,
const std::wstring& owner_password, const std::wstring& user_password)
{
// TODO: Сейчас при загрузке каждой новой картинки мы пересоздаем
// FontManager, потому что сейчас в нем кэш без ограничения.
//------------------------------------------------------
RELEASEINTERFACE((m_pInternal->m_pFontManager));
m_pInternal->m_pFontManager = m_pInternal->m_pAppFonts->GenerateFontManager();
NSFonts::IFontsCache* pMeasurerCache = NSFonts::NSFontCache::Create();
pMeasurerCache->SetStreams(m_pInternal->m_pAppFonts->GetStreams());
m_pInternal->m_pFontManager->SetOwnerCache(pMeasurerCache);
pMeasurerCache->SetCacheSize(1);
((GlobalParamsAdaptor*)globalParams)->SetFontManager(m_pInternal->m_pFontManager);
//------------------------------------------------------
RELEASEOBJECT(m_pInternal->m_pPDFDocument);
m_eError = errNone;
GString* owner_pswd = NSStrings::CreateString(owner_password);
GString* user_pswd = NSStrings::CreateString(user_password);
Object obj;
obj.initNull();
// будет освобожден в деструкторе PDFDoc
BaseStream *str = new MemStream((char*)data, 0, length, &obj);
m_pInternal->m_pPDFDocument = new PDFDoc(str, owner_pswd, user_pswd);
m_pInternal->m_nFileLength = length;
delete owner_pswd;
delete user_pswd;
m_eError = m_pInternal->m_pPDFDocument ? m_pInternal->m_pPDFDocument->getErrorCode() : errMemory;
if (!m_pInternal->m_pPDFDocument || !m_pInternal->m_pPDFDocument->isOk())
{
RELEASEOBJECT(m_pInternal->m_pPDFDocument);
return false;
}
m_pInternal->m_pFontList->Clear();
return true;
}
void CPdfReader::Close()
{
RELEASEOBJECT((m_pInternal->m_pPDFDocument));
}
NSFonts::IApplicationFonts* CPdfReader::GetFonts()
{
return m_pInternal->m_pAppFonts;
}
OfficeDrawingFileType CPdfReader::GetType()
{
return odftPDF;
}
int CPdfReader::GetError()
{
if (!m_pInternal->m_pPDFDocument)
return m_eError;
if (m_pInternal->m_pPDFDocument->isOk())
return 0;
return m_pInternal->m_pPDFDocument->getErrorCode();
}
int CPdfReader::GetPagesCount()
{
if (!m_pInternal->m_pPDFDocument)
return 0;
return m_pInternal->m_pPDFDocument->getNumPages();
}
double CPdfReader::GetVersion()
{
if (!m_pInternal->m_pPDFDocument)
return 0;
return m_pInternal->m_pPDFDocument->getPDFVersion();
}
int CPdfReader::GetPermissions()
{
if (!m_pInternal->m_pPDFDocument)
return 0;
int nPermissions = 0;
if (m_pInternal->m_pPDFDocument->okToPrint())
nPermissions += PERMISSION_PRINT;
if (m_pInternal->m_pPDFDocument->okToCopy())
nPermissions += PERMISSION_COPY;
if (m_pInternal->m_pPDFDocument->okToChange())
nPermissions += PERMISSION_CHANGE;
return nPermissions;
}
std::wstring CPdfReader::GetPageLabel(int nPageIndex)
{
if (!m_pInternal->m_pPDFDocument)
return std::wstring();
// todo label
// StringExt* seLabel = m_pInternal->m_pPDFDocument->GetPageLabels()->GetLabel(nPageIndex);
// if (seLabel)
// {
// std::wstring wsResult(seLabel->GetWString());
// delete seLabel;
// return wsResult;
// }
return std::wstring();
}
bool CPdfReader::ExtractAllImages(const wchar_t* wsDstPath, const wchar_t* wsPrefix)
{
std::wstring sDstPath(wsDstPath);
if (sDstPath.empty())
return false;
// check last symbol (directory)
wchar_t nLastSymbol = sDstPath[sDstPath.length() - 1];
if ('\\' != nLastSymbol && '/' != nLastSymbol)
sDstPath += '/';
// prefix for each file
if (NULL != wsPrefix)
sDstPath += std::wstring(wsPrefix);
std::string sDstPathA = U_TO_UTF8(sDstPath);
ImageOutputDev *pOutputDev = new ImageOutputDev((char*)sDstPathA.c_str(), true, false, false);
if (!pOutputDev)
return false;
int nPagesCount = GetPagesCount();
for (int nIndex = 1; nIndex <= nPagesCount; nIndex++)
{
m_pInternal->m_pPDFDocument->displayPage(pOutputDev, nIndex, 72, 72, 0, false, false, false);
}
delete pOutputDev;
return true;
}
void CPdfReader::GetPageInfo(int _nPageIndex, double* pdWidth, double* pdHeight, double* pdDpiX, double* pdDpiY)
{
int nPageIndex = _nPageIndex + 1;
if (!m_pInternal->m_pPDFDocument)
return;
const double c_dInch = 25.399; // Миллиметров в дюйме
const double c_dXResolution = 154.0;
const double c_dYResolution = 154.0;
double dKoefX = c_dInch / c_dXResolution;
double dKoefY = c_dInch / c_dYResolution;
int nRotate = m_pInternal->m_pPDFDocument->getPageRotate(nPageIndex);
while (nRotate >= 360)
nRotate -= 360;
while (nRotate < 0)
nRotate += 360;
if (0 != nRotate && 180 != nRotate)
{
*pdHeight = m_pInternal->m_pPDFDocument->getPageCropWidth(nPageIndex);
*pdWidth = m_pInternal->m_pPDFDocument->getPageCropHeight(nPageIndex);
}
else
{
*pdWidth = m_pInternal->m_pPDFDocument->getPageCropWidth(nPageIndex);
*pdHeight = m_pInternal->m_pPDFDocument->getPageCropHeight(nPageIndex);
}
*pdDpiX = 72;
*pdDpiY = 72;
}
void CPdfReader::DrawPageOnRenderer(IRenderer* pRenderer, int _nPageIndex, bool* pbBreak)
{
int nPageIndex = _nPageIndex + 1;
if (m_pInternal->m_pPDFDocument && pRenderer)
{
RendererOutputDev oRendererOut(pRenderer, m_pInternal->m_pFontManager, m_pInternal->m_pFontList);
oRendererOut.NewPDF(m_pInternal->m_pPDFDocument->getXRef());
oRendererOut.SetBreak(pbBreak);
m_pInternal->m_pPDFDocument->displayPage(&oRendererOut, nPageIndex, 72.0, 72.0, 0, false, true, false);
}
}
int CPdfReader::GetImagesCount()
{
// ImageOutputDev *pOutputDev = new ImageOutputDev(NULL, true, true, false);
// if (!pOutputDev)
// return 0;
//
// for (int nIndex = 1; nIndex <= m_pInternal->m_pPDFDocument->GetPagesCount(); nIndex++)
// {
// m_pInternal->m_pPDFDocument->displayPage(pOutputDev, nIndex, 72, 72, 0, false, false, false);
// }
//
// return pOutputDev->
return 0;
}
void CPdfReader::SetTempDirectory(const std::wstring& wsTempFolder)
{
if (!m_pInternal->m_wsTempFolder.empty())
{
NSDirectory::DeleteDirectory(m_pInternal->m_wsTempFolder);
m_pInternal->m_wsTempFolder = wsTempFolder;
}
if (!wsTempFolder.empty())
{
std::wstring wsFolderName = std::wstring(wsTempFolder) + L"//pdftemp";
std::wstring wsFolder = wsFolderName;
int nCounter = 0;
while (NSDirectory::Exists(wsFolder))
{
nCounter++;
wsFolder = wsFolderName + L"_" + std::to_wstring(nCounter);
}
NSDirectory::CreateDirectory(wsFolder);
m_pInternal->m_wsTempFolder = wsFolder;
}
else
m_pInternal->m_wsTempFolder = L"";
if (globalParams)
((GlobalParamsAdaptor*)globalParams)->SetTempFolder(m_pInternal->m_wsTempFolder.c_str());
}
std::wstring CPdfReader::GetTempDirectory()
{
return m_pInternal->m_wsTempFolder;
}
void CPdfReader::SetCMapFolder(const wchar_t* wsCMapFolder)
{
m_pInternal->m_wsCMapFolder = std::wstring(wsCMapFolder);
if (globalParams)
((GlobalParamsAdaptor*)globalParams)->SetCMapFolder(m_pInternal->m_wsCMapFolder.c_str());
}
void CPdfReader::SetCMapMemory()
{
if (globalParams)
((GlobalParamsAdaptor*)globalParams)->SetCMapMemory();
}
NSFonts::IFontManager* CPdfReader::GetFontManager()
{
return m_pInternal->m_pFontManager;
}
std::wstring CPdfReader::ToXml(const std::wstring& wsFilePath, bool isPrintStream)
{
XMLConverter oConverter(m_pInternal->m_pPDFDocument->getXRef(), isPrintStream);
std::wstring wsXml = oConverter.GetXml();
if (wsFilePath != L"")
{
NSFile::CFileBinary oFile;
if (!oFile.CreateFileW(wsFilePath))
return wsXml;
oFile.WriteStringUTF8(wsXml);
oFile.CloseFile();
}
return wsXml;
}
bool CPdfReader::EditPdf(IRenderer* pPdfWriter, const std::wstring& wsPath, const std::wstring& sPassword)
{
if (!pPdfWriter)
return false;
long lRendererType;
pPdfWriter->get_Type(&lRendererType);
if (c_nPDFWriter != lRendererType || !m_pInternal->m_pPDFDocument)
return false;
std::string sPathUtf8New = U_TO_UTF8(wsPath);
std::string sPathUtf8Old = U_TO_UTF8(m_pInternal->m_wsSrcPath);
if (sPathUtf8Old == sPathUtf8New || NSSystemPath::NormalizePath(sPathUtf8Old) == NSSystemPath::NormalizePath(sPathUtf8New))
{
GString* owner_pswd = NSStrings::CreateString(sPassword);
GString* user_pswd = NSStrings::CreateString(sPassword);
bool bRes = m_pInternal->m_pPDFDocument->makeWritable(true, owner_pswd, user_pswd);
delete owner_pswd;
delete user_pswd;
if (!bRes)
return false;
}
else
{
NSFile::CFileBinary oFile;
if (!oFile.OpenFile(wsPath, true))
return false;
oFile.CloseFile();
}
m_pInternal->m_pPdfWriter = (CPdfRenderer*)pPdfWriter;
m_pInternal->m_pPdfWriter->AddRef();
XRef* xref = m_pInternal->m_pPDFDocument->getXRef();
if (!xref)
return false;
Object catDict, catRefObj, pagesRefObj;
if (!xref->getCatalog(&catDict) || !catDict.isDict() || !catDict.dictLookupNF("Pages", &pagesRefObj))
{
pagesRefObj.free();
catDict.free();
return false;
}
Object* trailer = xref->getTrailerDict();
if (!trailer || !trailer->isDict() || !trailer->dictLookupNF("Root", &catRefObj) || !catRefObj.isRef())
{
pagesRefObj.free();
catDict.free();
catRefObj.free();
return false;
}
Ref catRef = catRefObj.getRef();
std::wstring sCatalog = XMLConverter::DictToXml(L"Catalog", &catDict, catRef.num, catRef.gen);
unsigned int nFormField = 0;
AcroForm* form = m_pInternal->m_pPDFDocument->getCatalog()->getForm();
if (form)
{
nFormField = form->getNumFields() + 1;
std::wstring sSig = L"Sig" + std::to_wstring(nFormField);
int i = 0, nFormFields = form->getNumFields();
while (i < nFormFields)
{
int nLength;
Unicode* uName = form->getField(i)->getName(&nLength);
std::wstring sName = NSStringExt::CConverter::GetUnicodeFromUTF32(uName, nLength);
RELEASEMEM(uName);
if (sName == sSig)
{
i = 0;
nFormField++;
sSig = L"Sig" + std::to_wstring(nFormField);
}
else
i++;
}
nFormField--;
}
int nCryptAlgorithm = -1;
std::wstring sEncrypt;
if (xref->isEncrypted())
{
CryptAlgorithm encAlgorithm;
GBool ownerPasswordOk;
int permFlags, keyLength, encVersion;
xref->getEncryption(&permFlags, &ownerPasswordOk, &keyLength, &encVersion, &encAlgorithm);
nCryptAlgorithm = encAlgorithm;
Object* pTrailerDict = xref->getTrailerDict();
if (pTrailerDict)
{
Object encrypt, ID, ID1;
if (pTrailerDict->dictLookup("Encrypt", &encrypt) && encrypt.isDict())
sEncrypt = XMLConverter::DictToXml(L"Encrypt", &encrypt, 0, 0, true);
encrypt.free();
if (sEncrypt.length() > 10)
sEncrypt.erase(sEncrypt.length() - 10);
if (pTrailerDict->dictLookup("ID", &ID) && ID.isArray() && ID.arrayGet(0, &ID1) && ID1.isString())
sEncrypt += XMLConverter::DictToXml(L"ID", &ID1, 0, 0, true);
if (sEncrypt.length() > 10)
sEncrypt += L"</Encrypt>";
ID.free();
ID1.free();
}
}
bool bRes = m_pInternal->m_pPdfWriter->EditPdf(wsPath, xref->getLastXRefPos(), xref->getNumObjects(), sCatalog, catRef.num, sEncrypt, sPassword, nCryptAlgorithm, nFormField);
if (bRes)
m_pInternal->GetPageTree(xref, &pagesRefObj);
pagesRefObj.free();
catDict.free();
catRefObj.free();
return bRes;
}
bool CPdfReader::EditPage(int nPageIndex)
{
if (!m_pInternal->m_pPdfWriter || !m_pInternal->m_pPDFDocument)
return false;
XRef* xref = m_pInternal->m_pPDFDocument->getXRef();
Catalog* pCatalog = m_pInternal->m_pPDFDocument->getCatalog();
if (!xref || !pCatalog)
return false;
std::pair<int, int> pPageRef = m_pInternal->m_pPdfWriter->GetPageRef(nPageIndex);
if (pPageRef.first == 0)
return false;
// Получение объекта страницы
Object pageRefObj, pageObj;
pageRefObj.initRef(pPageRef.first, pPageRef.second);
if (!pageRefObj.fetch(xref, &pageObj) || !pageObj.isDict())
{
pageObj.free();
pageRefObj.free();
return false;
}
std::wstring sPage = XMLConverter::DictToXml(L"Page", &pageObj, pPageRef.first, pPageRef.second);
pageObj.free();
pageRefObj.free();
return m_pInternal->m_pPdfWriter->EditPage(sPage, pPageRef.first);
}
bool CPdfReader::DeletePage(int nPageIndex)
{
if (!m_pInternal->m_pPdfWriter || !m_pInternal->m_pPDFDocument)
return false;
return m_pInternal->m_pPdfWriter->DeletePage(nPageIndex);
}
bool CPdfReader::AddPage(int nPageIndex)
{
if (!m_pInternal->m_pPdfWriter || !m_pInternal->m_pPDFDocument)
return false;
return m_pInternal->m_pPdfWriter->AddPage(nPageIndex);
}
bool CPdfReader::EditClose(const std::wstring& sPassword)
{
if (!m_pInternal->m_pPdfWriter || !m_pInternal->m_pPDFDocument)
return false;
XRef* xref = m_pInternal->m_pPDFDocument->getXRef();
if (!xref)
return false;
Object* trailerDict = xref->getTrailerDict();
std::wstring sTrailer;
if (trailerDict)
sTrailer = XMLConverter::DictToXml(L"Trailer", trailerDict);
std::wstring sInfo;
Object info;
m_pInternal->m_pPDFDocument->getDocInfo(&info);
if (info.isDict())
sInfo = XMLConverter::DictToXml(L"Info", &info);
info.free();
std::wstring wsPath = m_pInternal->m_pPdfWriter->GetEditPdfPath();
bool bRes = m_pInternal->m_pPdfWriter->EditClose(sTrailer, sInfo);
std::string sPathUtf8New = U_TO_UTF8(wsPath);
std::string sPathUtf8Old = U_TO_UTF8(m_pInternal->m_wsSrcPath);
if (sPathUtf8Old == sPathUtf8New || NSSystemPath::NormalizePath(sPathUtf8Old) == NSSystemPath::NormalizePath(sPathUtf8New))
{
GString* owner_pswd = NSStrings::CreateString(sPassword);
GString* user_pswd = NSStrings::CreateString(sPassword);
bRes &= m_pInternal->m_pPDFDocument->makeWritable(false, owner_pswd, user_pswd);
delete owner_pswd;
delete user_pswd;
NSFile::CFileBinary oFile;
if (oFile.OpenFile(m_pInternal->m_wsSrcPath))
{
m_pInternal->m_nFileLength = oFile.GetFileSize();
oFile.CloseFile();
}
}
return bRes;
}
#define DICT_LOOKUP(sName, wsName) \
if (info.dictLookup(sName, &obj1)->isString())\
{\
TextString* s = new TextString(obj1.getString());\
sRes += L"\"";\
sRes += wsName;\
sRes += L"\":\"";\
std::wstring sValue = NSStringExt::CConverter::GetUnicodeFromUTF32(s->getUnicode(), s->getLength());\
NSStringExt::Replace(sValue, L"\"", L"\\\"");\
sRes += sValue;\
sRes += L"\",";\
delete s;\
}\
#define DICT_LOOKUP_DATE(sName, wsName) \
if (info.dictLookup(sName, &obj1)->isString())\
{\
char* str = obj1.getString()->getCString();\
int length = obj1.getString()->getLength();\
if (str && length > 21)\
{\
TextString* s = new TextString(obj1.getString());\
std::wstring sNoDate = NSStringExt::CConverter::GetUnicodeFromUTF32(s->getUnicode(), s->getLength());\
if (sNoDate.length() > 21)\
{\
std::wstring sDate = sNoDate.substr(2, 4) + L'-' + sNoDate.substr(6, 2) + L'-' + sNoDate.substr(8, 2) + L'T' +\
sNoDate.substr(10, 2) + L':' + sNoDate.substr(12, 2) + L':' + sNoDate.substr(14, 2) + L".000+" +\
sNoDate.substr(17, 2) + L':' + sNoDate.substr(20, 2);\
NSStringExt::Replace(sDate, L"\"", L"\\\"");\
sRes += L"\"";\
sRes += wsName;\
sRes += L"\":\"";\
sRes += sDate;\
sRes += L"\",";\
}\
delete s;\
}\
}\
std::wstring CPdfReader::GetInfo()
{
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"{";
Object info, obj1;
m_pInternal->m_pPDFDocument->getDocInfo(&info);
if (info.isDict())
{
DICT_LOOKUP("Title", L"Title");
DICT_LOOKUP("Author", L"Author");
DICT_LOOKUP("Subject", L"Subject");
DICT_LOOKUP("Keywords", L"Keywords");
DICT_LOOKUP("Creator", L"Creator");
DICT_LOOKUP("Producer", L"Producer");
DICT_LOOKUP_DATE("CreationDate", L"CreationDate");
DICT_LOOKUP_DATE("ModDate", L"ModDate");
}
info.free();
obj1.free();
std::wstring version = std::to_wstring(GetVersion());
std::wstring::size_type posDot = version.find('.');
if (posDot != std::wstring::npos)
version = version.substr(0, posDot + 2);
sRes += L"\"Version\":";
sRes += version;
double nW = 0;
double nH = 0;
double nDpi = 0;
GetPageInfo(0, &nW, &nH, &nDpi, &nDpi);
sRes += L",\"PageWidth\":";
sRes += std::to_wstring((int)(nW * 100));
sRes += L",\"PageHeight\":";
sRes += std::to_wstring((int)(nH * 100));
sRes += L",\"NumberOfPages\":";
sRes += std::to_wstring(GetPagesCount());
sRes += L",\"FastWebView\":";
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 == m_pInternal->m_nFileLength;
}
obj6.free();
obj5.free();
}
obj4.free();
obj3.free();
obj2.free();
obj1.free();
delete parser;
sRes += bLinearized ? L"true" : L"false";
sRes += L",\"Tagged\":";
bool bTagged = false;
Object catDict, markInfoObj;
if (xref->getCatalog(&catDict) && catDict.isDict() && catDict.dictLookup("MarkInfo", &markInfoObj) && markInfoObj.isDict())
{
Object marked, suspects;
if (markInfoObj.dictLookup("Marked", &marked) && marked.isBool() && marked.getBool())
{
bTagged = true;
// If Suspects is true, the document may not completely conform to Tagged PDF conventions.
if (markInfoObj.dictLookup("Suspects", &suspects) && suspects.isBool() && suspects.getBool())
bTagged = false;
}
marked.free();
suspects.free();
}
markInfoObj.free();
catDict.free();
sRes += bTagged ? L"true" : L"false";
sRes += L"}";
return sRes;
}
#ifdef BUILDING_WASM_MODULE
void getBookmars(PDFDoc* pdfDoc, OutlineItem* pOutlineItem, NSWasm::CData& out, int level)
{
int nLengthTitle = pOutlineItem->getTitleLength();
Unicode* pTitle = pOutlineItem->getTitle();
std::string sTitle = NSStringExt::CConverter::GetUtf8FromUTF32(pTitle, nLengthTitle);
LinkAction* pLinkAction = pOutlineItem->getAction();
if (!pLinkAction)
return;
LinkActionKind kind = pLinkAction->getKind();
if (kind != actionGoTo)
return;
GString* str = ((LinkGoTo*)pLinkAction)->getNamedDest();
LinkDest* pLinkDest = str ? pdfDoc->findDest(str) : ((LinkGoTo*)pLinkAction)->getDest();
if (!pLinkDest)
return;
int pg;
if (pLinkDest->isPageRef())
{
Ref pageRef = pLinkDest->getPageRef();
pg = pdfDoc->findPage(pageRef.num, pageRef.gen);
}
else
pg = pLinkDest->getPageNum();
if (pg == 0)
pg = 1;
double dy = 0;
double dTop = pLinkDest->getTop();
double dHeight = pdfDoc->getPageCropHeight(pg);
if (dTop > 0 && dTop < dHeight)
dy = dHeight - dTop;
if (str)
RELEASEOBJECT(pLinkDest);
out.AddInt(pg - 1);
out.AddInt(level);
out.AddDouble(dy);
out.WriteString((BYTE*)sTitle.c_str(), sTitle.length());
pOutlineItem->open();
GList* pList = pOutlineItem->getKids();
if (!pList)
return;
int num = pList->getLength();
for (int i = 0; i < num; i++)
{
OutlineItem* pOutlineItemKid = (OutlineItem*)pList->get(i);
if (!pOutlineItemKid)
continue;
getBookmars(pdfDoc, pOutlineItemKid, out, level + 1);
}
pOutlineItem->close();
}
BYTE* CPdfReader::GetStructure()
{
if (!m_pInternal->m_pPDFDocument)
return NULL;
Outline* pOutline = m_pInternal->m_pPDFDocument->getOutline();
if (!pOutline)
return NULL;
GList* pList = pOutline->getItems();
if (!pList)
return NULL;
NSWasm::CData oRes;
oRes.SkipLen();
int num = pList->getLength();
for (int i = 0; i < num; i++)
{
OutlineItem* pOutlineItem = (OutlineItem*)pList->get(i);
if (pOutlineItem)
getBookmars(m_pInternal->m_pPDFDocument, pOutlineItem, oRes, 1);
}
oRes.WriteLen();
BYTE* bRes = oRes.GetBuffer();
oRes.ClearWithoutAttack();
return bRes;
}
BYTE* CPdfReader::GetLinks(int nPageIndex)
{
if (!m_pInternal->m_pPDFDocument)
return NULL;
nPageIndex++;
NSWasm::CPageLink oLinks;
double height = m_pInternal->m_pPDFDocument->getPageCropHeight(nPageIndex);
// Гиперссылка
Links* pLinks = m_pInternal->m_pPDFDocument->getLinks(nPageIndex);
if (!pLinks)
return NULL;
int num = pLinks->getNumLinks();
for (int i = 0; i < num; i++)
{
Link* pLink = pLinks->getLink(i);
if (!pLink)
continue;
GString* str = NULL;
double x1 = 0.0, y1 = 0.0, x2 = 0.0, y2 = 0.0, dy = 0.0;
pLink->getRect(&x1, &y1, &x2, &y2);
y1 = height - y1;
y2 = height - y2;
LinkAction* pLinkAction = pLink->getAction();
if (!pLinkAction)
continue;
LinkActionKind kind = pLinkAction->getKind();
if (kind == actionGoTo)
{
str = ((LinkGoTo*)pLinkAction)->getNamedDest();
LinkDest* pLinkDest = str ? m_pInternal->m_pPDFDocument->findDest(str) : ((LinkGoTo*)pLinkAction)->getDest()->copy();
if (pLinkDest)
{
int pg;
if (pLinkDest->isPageRef())
{
Ref pageRef = pLinkDest->getPageRef();
pg = m_pInternal->m_pPDFDocument->findPage(pageRef.num, pageRef.gen);
}
else
pg = pLinkDest->getPageNum();
std::string sLink = "#" + std::to_string(pg - 1);
str = new GString(sLink.c_str());
dy = m_pInternal->m_pPDFDocument->getPageCropHeight(pg) - pLinkDest->getTop();
}
RELEASEOBJECT(pLinkDest);
}
else if (kind == actionURI)
str = ((LinkURI*)pLinkAction)->getURI()->copy();
oLinks.m_arLinks.push_back({str ? std::string(str->getCString(), str->getLength()) : "", dy, x1, y2, x2 - x1, y1 - y2});
RELEASEOBJECT(str);
}
RELEASEOBJECT(pLinks);
// Текст-ссылка
TextOutputControl textOutControl;
textOutControl.mode = textOutReadingOrder;
TextOutputDev* pTextOut = new TextOutputDev(NULL, &textOutControl, gFalse);
m_pInternal->m_pPDFDocument->displayPage(pTextOut, nPageIndex, 72, 72, 0, gFalse, gTrue, gFalse);