mirror of
https://github.com/ONLYOFFICE/core.git
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740 lines
26 KiB
C++
740 lines
26 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2019
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#define errMemory 12
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#include "../DesktopEditor/graphics/pro/Graphics.h"
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#include "PdfReader.h"
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#include "Src/Adaptors.h"
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#include "lib/xpdf/ErrorCodes.h"
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#include "../Common/OfficeDefines.h"
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#include "../DesktopEditor/raster/BgraFrame.h"
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#include "../DesktopEditor/graphics/IRenderer.h"
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#include "../DesktopEditor/common/Directory.h"
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#include "../DesktopEditor/common/StringExt.h"
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#include "lib/xpdf/PDFDoc.h"
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#include "lib/xpdf/GlobalParams.h"
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#include "lib/xpdf/ErrorCodes.h"
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#include "lib/xpdf/ImageOutputDev.h"
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#include "lib/xpdf/TextString.h"
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#include "lib/xpdf/Lexer.h"
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#include "lib/xpdf/Parser.h"
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#include "Src/RendererOutputDev.h"
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#ifdef BUILDING_WASM_MODULE
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#include "../DesktopEditor/graphics/pro/js/wasm/src/serialize.h"
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#include "lib/xpdf/Outline.h"
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#include "lib/xpdf/Link.h"
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#include "lib/xpdf/TextOutputDev.h"
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#include "lib/goo/GList.h"
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#include <vector>
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#endif
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namespace PdfReader
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{
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class CPdfReader_Private
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{
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public:
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PDFDoc* m_pPDFDocument;
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std::wstring m_wsTempFolder;
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std::wstring m_wsCMapFolder;
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NSFonts::IApplicationFonts* m_pAppFonts;
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NSFonts::IFontManager* m_pFontManager;
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CFontList* m_pFontList;
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DWORD m_nFileLength;
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};
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CPdfReader::CPdfReader(NSFonts::IApplicationFonts* pAppFonts)
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{
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m_pInternal = new CPdfReader_Private();
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m_pInternal->m_wsTempFolder = L"";
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m_pInternal->m_wsCMapFolder = L"";
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m_pInternal->m_pPDFDocument = NULL;
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m_pInternal->m_pFontManager = NULL;
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m_pInternal->m_nFileLength = 0;
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globalParams = new GlobalParamsAdaptor(NULL);
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#ifndef _DEBUG
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globalParams->setErrQuiet(gTrue);
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#endif
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m_pInternal->m_pFontList = new CFontList();
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m_pInternal->m_pAppFonts = pAppFonts;
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// Создаем менеджер шрифтов с собственным кэшем
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m_pInternal->m_pFontManager = pAppFonts->GenerateFontManager();
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NSFonts::IFontsCache* pMeasurerCache = NSFonts::NSFontCache::Create();
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pMeasurerCache->SetStreams(pAppFonts->GetStreams());
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m_pInternal->m_pFontManager->SetOwnerCache(pMeasurerCache);
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pMeasurerCache->SetCacheSize(1);
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((GlobalParamsAdaptor*)globalParams)->SetFontManager(m_pInternal->m_pFontManager);
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#ifndef BUILDING_WASM_MODULE
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globalParams->setupBaseFonts(NULL);
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#endif
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m_eError = errNone;
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}
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CPdfReader::~CPdfReader()
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{
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if (m_pInternal->m_pFontList)
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{
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m_pInternal->m_pFontList->Clear();
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delete m_pInternal->m_pFontList;
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}
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m_pInternal->m_wsCMapFolder = L"";
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if (!m_pInternal->m_wsTempFolder.empty())
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{
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NSDirectory::DeleteDirectory(m_pInternal->m_wsTempFolder);
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m_pInternal->m_wsTempFolder = L"";
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}
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RELEASEOBJECT((m_pInternal->m_pPDFDocument));
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RELEASEOBJECT((globalParams));
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RELEASEINTERFACE((m_pInternal->m_pFontManager));
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}
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bool CPdfReader::LoadFromFile(const std::wstring& wsSrcPath, const std::wstring& wsOptions,
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const std::wstring& wsOwnerPassword, const std::wstring& wsUserPassword)
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{
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// TODO: Сейчас при загрузке каждой новой картинки мы пересоздаем
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// FontManager, потому что сейчас в нем кэш без ограничения.
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//------------------------------------------------------
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RELEASEINTERFACE((m_pInternal->m_pFontManager));
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m_pInternal->m_pFontManager = m_pInternal->m_pAppFonts->GenerateFontManager();
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NSFonts::IFontsCache* pMeasurerCache = NSFonts::NSFontCache::Create();
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pMeasurerCache->SetStreams(m_pInternal->m_pAppFonts->GetStreams());
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m_pInternal->m_pFontManager->SetOwnerCache(pMeasurerCache);
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pMeasurerCache->SetCacheSize(1);
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((GlobalParamsAdaptor*)globalParams)->SetFontManager(m_pInternal->m_pFontManager);
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//------------------------------------------------------
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if (m_pInternal->m_pPDFDocument)
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delete m_pInternal->m_pPDFDocument;
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if (GetTempDirectory() == L"")
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{
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SetTempDirectory(NSDirectory::GetTempPath());
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}
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m_eError = errNone;
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GString* owner_pswd = NSStrings::CreateString(wsOwnerPassword);
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GString* user_pswd = NSStrings::CreateString(wsUserPassword);
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// конвертим путь в utf8 - под виндой они сконвертят в юникод, а на остальных - так и надо
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std::string sPathUtf8 = U_TO_UTF8(wsSrcPath);
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m_pInternal->m_pPDFDocument = new PDFDoc((char*)sPathUtf8.c_str(), owner_pswd, user_pswd);
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delete owner_pswd;
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delete user_pswd;
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NSFile::CFileBinary oFile;
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if (oFile.OpenFile(wsSrcPath))
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{
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m_pInternal->m_nFileLength = oFile.GetFileSize();
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oFile.CloseFile();
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}
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if (m_pInternal->m_pPDFDocument)
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m_eError = m_pInternal->m_pPDFDocument->getErrorCode();
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else
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m_eError = errMemory;
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if (!m_pInternal->m_pPDFDocument || !m_pInternal->m_pPDFDocument->isOk())
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{
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RELEASEOBJECT(m_pInternal->m_pPDFDocument);
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return false;
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}
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m_pInternal->m_pFontList->Clear();
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return (errNone == m_eError);
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}
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bool CPdfReader::LoadFromMemory(BYTE* data, DWORD length, const std::wstring& options,
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const std::wstring& owner_password, const std::wstring& user_password)
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{
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// TODO: Сейчас при загрузке каждой новой картинки мы пересоздаем
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// FontManager, потому что сейчас в нем кэш без ограничения.
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//------------------------------------------------------
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RELEASEINTERFACE((m_pInternal->m_pFontManager));
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m_pInternal->m_pFontManager = m_pInternal->m_pAppFonts->GenerateFontManager();
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NSFonts::IFontsCache* pMeasurerCache = NSFonts::NSFontCache::Create();
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pMeasurerCache->SetStreams(m_pInternal->m_pAppFonts->GetStreams());
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m_pInternal->m_pFontManager->SetOwnerCache(pMeasurerCache);
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pMeasurerCache->SetCacheSize(1);
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((GlobalParamsAdaptor*)globalParams)->SetFontManager(m_pInternal->m_pFontManager);
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//------------------------------------------------------
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RELEASEOBJECT(m_pInternal->m_pPDFDocument);
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m_eError = errNone;
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GString* owner_pswd = NSStrings::CreateString(owner_password);
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GString* user_pswd = NSStrings::CreateString(user_password);
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Object obj;
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obj.initNull();
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// будет освобожден в деструкторе PDFDoc
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BaseStream *str = new MemStream((char*)data, 0, length, &obj);
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m_pInternal->m_pPDFDocument = new PDFDoc(str, owner_pswd, user_pswd);
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m_pInternal->m_nFileLength = length;
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delete owner_pswd;
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delete user_pswd;
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m_eError = m_pInternal->m_pPDFDocument ? m_pInternal->m_pPDFDocument->getErrorCode() : errMemory;
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if (!m_pInternal->m_pPDFDocument || !m_pInternal->m_pPDFDocument->isOk())
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{
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RELEASEOBJECT(m_pInternal->m_pPDFDocument);
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return false;
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}
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m_pInternal->m_pFontList->Clear();
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return (errNone == m_eError);
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}
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void CPdfReader::Close()
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{
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RELEASEOBJECT((m_pInternal->m_pPDFDocument));
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}
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NSFonts::IApplicationFonts* CPdfReader::GetFonts()
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{
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return m_pInternal->m_pAppFonts;
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}
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OfficeDrawingFileType CPdfReader::GetType()
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{
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return odftPDF;
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}
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int CPdfReader::GetError()
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{
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if (!m_pInternal->m_pPDFDocument)
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return m_eError;
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if (m_pInternal->m_pPDFDocument->isOk())
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return 0;
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return m_pInternal->m_pPDFDocument->getErrorCode();
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}
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int CPdfReader::GetPagesCount()
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{
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if (!m_pInternal->m_pPDFDocument)
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return 0;
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return m_pInternal->m_pPDFDocument->getNumPages();
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}
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double CPdfReader::GetVersion()
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{
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if (!m_pInternal->m_pPDFDocument)
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return 0;
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return m_pInternal->m_pPDFDocument->getPDFVersion();
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}
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int CPdfReader::GetPermissions()
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{
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if (!m_pInternal->m_pPDFDocument)
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return 0;
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int nPermissions = 0;
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if (m_pInternal->m_pPDFDocument->okToPrint())
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nPermissions += PERMISSION_PRINT;
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if (m_pInternal->m_pPDFDocument->okToCopy())
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nPermissions += PERMISSION_COPY;
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if (m_pInternal->m_pPDFDocument->okToChange())
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nPermissions += PERMISSION_CHANGE;
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return nPermissions;
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}
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std::wstring CPdfReader::GetPageLabel(int nPageIndex)
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{
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if (!m_pInternal->m_pPDFDocument)
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return std::wstring();
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// todo label
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// StringExt* seLabel = m_pInternal->m_pPDFDocument->GetPageLabels()->GetLabel(nPageIndex);
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// if (seLabel)
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// {
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// std::wstring wsResult(seLabel->GetWString());
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// delete seLabel;
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// return wsResult;
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// }
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return std::wstring();
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}
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bool CPdfReader::ExtractAllImages(const wchar_t* wsDstPath, const wchar_t* wsPrefix)
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{
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std::wstring sDstPath(wsDstPath);
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if (sDstPath.empty())
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return false;
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// check last symbol (directory)
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wchar_t nLastSymbol = sDstPath[sDstPath.length() - 1];
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if ('\\' != nLastSymbol && '/' != nLastSymbol)
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sDstPath += '/';
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// prefix for each file
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if (NULL != wsPrefix)
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sDstPath += std::wstring(wsPrefix);
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std::string sDstPathA = U_TO_UTF8(sDstPath);
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ImageOutputDev *pOutputDev = new ImageOutputDev((char*)sDstPathA.c_str(), true, false, false);
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if (!pOutputDev)
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return false;
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int nPagesCount = GetPagesCount();
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for (int nIndex = 1; nIndex <= nPagesCount; nIndex++)
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{
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m_pInternal->m_pPDFDocument->displayPage(pOutputDev, nIndex, 72, 72, 0, false, false, false);
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}
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delete pOutputDev;
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return true;
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}
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void CPdfReader::GetPageInfo(int _nPageIndex, double* pdWidth, double* pdHeight, double* pdDpiX, double* pdDpiY)
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{
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int nPageIndex = _nPageIndex + 1;
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if (!m_pInternal->m_pPDFDocument)
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return;
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const double c_dInch = 25.399; // Миллиметров в дюйме
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const double c_dXResolution = 154.0;
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const double c_dYResolution = 154.0;
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double dKoefX = c_dInch / c_dXResolution;
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double dKoefY = c_dInch / c_dYResolution;
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int nRotate = m_pInternal->m_pPDFDocument->getPageRotate(nPageIndex);
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while (nRotate >= 360)
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nRotate -= 360;
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while (nRotate < 0)
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nRotate += 360;
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if (0 != nRotate && 180 != nRotate)
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{
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*pdHeight = m_pInternal->m_pPDFDocument->getPageCropWidth(nPageIndex);
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*pdWidth = m_pInternal->m_pPDFDocument->getPageCropHeight(nPageIndex);
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}
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else
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{
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*pdWidth = m_pInternal->m_pPDFDocument->getPageCropWidth(nPageIndex);
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*pdHeight = m_pInternal->m_pPDFDocument->getPageCropHeight(nPageIndex);
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}
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*pdDpiX = 72;
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*pdDpiY = 72;
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}
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void CPdfReader::DrawPageOnRenderer(IRenderer* pRenderer, int _nPageIndex, bool* pbBreak)
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{
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int nPageIndex = _nPageIndex + 1;
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if (m_pInternal->m_pPDFDocument && pRenderer)
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{
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RendererOutputDev oRendererOut(pRenderer, m_pInternal->m_pFontManager, m_pInternal->m_pFontList);
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oRendererOut.NewPDF(m_pInternal->m_pPDFDocument->getXRef());
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oRendererOut.SetBreak(pbBreak);
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m_pInternal->m_pPDFDocument->displayPage(&oRendererOut, nPageIndex, 72.0, 72.0, 0, false, true, false);
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}
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}
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int CPdfReader::GetImagesCount()
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{
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// ImageOutputDev *pOutputDev = new ImageOutputDev(NULL, true, true, false);
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// if (!pOutputDev)
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// return 0;
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//
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// for (int nIndex = 1; nIndex <= m_pInternal->m_pPDFDocument->GetPagesCount(); nIndex++)
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// {
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// m_pInternal->m_pPDFDocument->displayPage(pOutputDev, nIndex, 72, 72, 0, false, false, false);
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// }
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//
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// return pOutputDev->
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return 0;
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}
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void CPdfReader::SetTempDirectory(const std::wstring& wsTempFolder)
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{
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if (!m_pInternal->m_wsTempFolder.empty())
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{
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NSDirectory::DeleteDirectory(m_pInternal->m_wsTempFolder);
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m_pInternal->m_wsTempFolder = wsTempFolder;
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}
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if (!wsTempFolder.empty())
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{
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std::wstring wsFolderName = std::wstring(wsTempFolder) + L"//pdftemp";
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std::wstring wsFolder = wsFolderName;
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int nCounter = 0;
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while (NSDirectory::Exists(wsFolder))
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{
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nCounter++;
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wsFolder = wsFolderName + L"_" + std::to_wstring(nCounter);
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}
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NSDirectory::CreateDirectory(wsFolder);
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m_pInternal->m_wsTempFolder = wsFolder;
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}
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else
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m_pInternal->m_wsTempFolder = L"";
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if (globalParams)
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((GlobalParamsAdaptor*)globalParams)->SetTempFolder(m_pInternal->m_wsTempFolder.c_str());
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}
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std::wstring CPdfReader::GetTempDirectory()
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{
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return m_pInternal->m_wsTempFolder;
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}
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void CPdfReader::SetCMapFolder(const wchar_t* wsCMapFolder)
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{
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m_pInternal->m_wsCMapFolder = std::wstring(wsCMapFolder);
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if (globalParams)
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((GlobalParamsAdaptor*)globalParams)->SetCMapFolder(m_pInternal->m_wsCMapFolder.c_str());
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}
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NSFonts::IFontManager* CPdfReader::GetFontManager()
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{
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return m_pInternal->m_pFontManager;
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}
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std::wstring CPdfReader::ToXml(const std::wstring& wsFilePath)
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{
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//todo
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// std::wstring wsXml = m_pInternal->m_pPDFDocument->ToXml();
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//
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// if (wsFilePath != L"")
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// {
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// NSFile::CFileBinary oFile;
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// if (!oFile.CreateFileW(wsFilePath))
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// return wsXml;
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//
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// oFile.WriteStringUTF8(wsXml);
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// oFile.CloseFile();
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// }
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//
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// return wsXml;
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return L"";
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}
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#define DICT_LOOKUP(sName, wsName) \
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if (info.dictLookup(sName, &obj1)->isString())\
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{\
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TextString* s = new TextString(obj1.getString());\
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sRes += L"\"";\
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sRes += wsName;\
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sRes += L"\":\"";\
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std::wstring sValue = NSStringExt::CConverter::GetUnicodeFromUTF32(s->getUnicode(), s->getLength());\
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NSStringExt::Replace(sValue, L"\"", L"\\\"");\
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sRes += sValue;\
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sRes += L"\",";\
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delete s;\
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}\
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#define DICT_LOOKUP_DATE(sName, wsName) \
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if (info.dictLookup(sName, &obj1)->isString())\
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{\
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char* str = obj1.getString()->getCString();\
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int length = obj1.getString()->getLength();\
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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\":";
|
||
sRes += m_pInternal->m_pPDFDocument->getStructTreeRoot()->isDict() ? 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();
|
||
double dy = pdfDoc->getPageCropHeight(pg) - pLinkDest->getTop();
|
||
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);
|
||
|
||
// 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);
|
||
m_pInternal->m_pPDFDocument->processLinks(pTextOut, nPageIndex);
|
||
TextWordList* pWordList = pTextOut->makeWordList();
|
||
for (int i = 0; i < pWordList->getLength(); i++)
|
||
{
|
||
TextWord* pWord = pWordList->get(i);
|
||
if (!pWord)
|
||
continue;
|
||
GString* sLink = pWord->getText();
|
||
if (!sLink)
|
||
continue;
|
||
std::string link(sLink->getCString(), sLink->getLength());
|
||
size_t find = link.find("http://");
|
||
if (find == std::string::npos)
|
||
find = link.find("https://");
|
||
if (find == std::string::npos)
|
||
find = link.find("www.");
|
||
if (find != std::string::npos)
|
||
{
|
||
link.erase(0, find);
|
||
double x1, y1, x2, y2;
|
||
pWord->getBBox(&x1, &y1, &x2, &y2);
|
||
oLinks.m_arLinks.push_back({link, 0, x1, y1, x2 - x1, y2 - y1});
|
||
}
|
||
}
|
||
RELEASEOBJECT(pTextOut);
|
||
|
||
// 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);
|
||
return oLinks.Serialize();
|
||
}
|
||
#endif
|
||
}
|