diff options
Diffstat (limited to 'fpdfsdk/fpdf_dataavail.cpp')
| -rw-r--r-- | fpdfsdk/fpdf_dataavail.cpp | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/fpdfsdk/fpdf_dataavail.cpp b/fpdfsdk/fpdf_dataavail.cpp new file mode 100644 index 0000000000..0a1ebefaef --- /dev/null +++ b/fpdfsdk/fpdf_dataavail.cpp @@ -0,0 +1,172 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "public/fpdf_dataavail.h" + +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/ipdf_data_avail.h" +#include "fpdfsdk/include/fsdk_define.h" +#include "public/fpdf_formfill.h" + +// These checks are here because core/ and public/ cannot depend on each other. +static_assert(IPDF_DataAvail::DataError == PDF_DATA_ERROR, + "IPDF_DataAvail::DataError value mismatch"); +static_assert(IPDF_DataAvail::DataNotAvailable == PDF_DATA_NOTAVAIL, + "IPDF_DataAvail::DataNotAvailable value mismatch"); +static_assert(IPDF_DataAvail::DataAvailable == PDF_DATA_AVAIL, + "IPDF_DataAvail::DataAvailable value mismatch"); + +static_assert(IPDF_DataAvail::LinearizationUnknown == PDF_LINEARIZATION_UNKNOWN, + "IPDF_DataAvail::LinearizationUnknown value mismatch"); +static_assert(IPDF_DataAvail::NotLinearized == PDF_NOT_LINEARIZED, + "IPDF_DataAvail::NotLinearized value mismatch"); +static_assert(IPDF_DataAvail::Linearized == PDF_LINEARIZED, + "IPDF_DataAvail::Linearized value mismatch"); + +static_assert(IPDF_DataAvail::FormError == PDF_FORM_ERROR, + "IPDF_DataAvail::FormError value mismatch"); +static_assert(IPDF_DataAvail::FormNotAvailable == PDF_FORM_NOTAVAIL, + "IPDF_DataAvail::FormNotAvailable value mismatch"); +static_assert(IPDF_DataAvail::FormAvailable == PDF_FORM_AVAIL, + "IPDF_DataAvail::FormAvailable value mismatch"); +static_assert(IPDF_DataAvail::FormNotExist == PDF_FORM_NOTEXIST, + "IPDF_DataAvail::FormNotExist value mismatch"); + +class CFPDF_FileAvailWrap : public IPDF_DataAvail::FileAvail { + public: + CFPDF_FileAvailWrap() { m_pfileAvail = NULL; } + ~CFPDF_FileAvailWrap() override {} + + void Set(FX_FILEAVAIL* pfileAvail) { m_pfileAvail = pfileAvail; } + + // IPDF_DataAvail::FileAvail: + FX_BOOL IsDataAvail(FX_FILESIZE offset, FX_DWORD size) override { + return m_pfileAvail->IsDataAvail(m_pfileAvail, offset, size); + } + + private: + FX_FILEAVAIL* m_pfileAvail; +}; + +class CFPDF_FileAccessWrap : public IFX_FileRead { + public: + CFPDF_FileAccessWrap() { m_pFileAccess = NULL; } + ~CFPDF_FileAccessWrap() override {} + + void Set(FPDF_FILEACCESS* pFile) { m_pFileAccess = pFile; } + + // IFX_FileRead + FX_FILESIZE GetSize() override { return m_pFileAccess->m_FileLen; } + + FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override { + return m_pFileAccess->m_GetBlock(m_pFileAccess->m_Param, offset, + (uint8_t*)buffer, size); + } + + void Release() override {} + + private: + FPDF_FILEACCESS* m_pFileAccess; +}; + +class CFPDF_DownloadHintsWrap : public IPDF_DataAvail::DownloadHints { + public: + explicit CFPDF_DownloadHintsWrap(FX_DOWNLOADHINTS* pDownloadHints) { + m_pDownloadHints = pDownloadHints; + } + ~CFPDF_DownloadHintsWrap() override {} + + public: + // IFX_DownloadHints + void AddSegment(FX_FILESIZE offset, FX_DWORD size) override { + m_pDownloadHints->AddSegment(m_pDownloadHints, offset, size); + } + + private: + FX_DOWNLOADHINTS* m_pDownloadHints; +}; + +class CFPDF_DataAvail { + public: + CFPDF_DataAvail() { m_pDataAvail = NULL; } + + ~CFPDF_DataAvail() { delete m_pDataAvail; } + + IPDF_DataAvail* m_pDataAvail; + CFPDF_FileAvailWrap m_FileAvail; + CFPDF_FileAccessWrap m_FileRead; +}; + +DLLEXPORT FPDF_AVAIL STDCALL FPDFAvail_Create(FX_FILEAVAIL* file_avail, + FPDF_FILEACCESS* file) { + CFPDF_DataAvail* pAvail = new CFPDF_DataAvail; + pAvail->m_FileAvail.Set(file_avail); + pAvail->m_FileRead.Set(file); + pAvail->m_pDataAvail = + IPDF_DataAvail::Create(&pAvail->m_FileAvail, &pAvail->m_FileRead); + return pAvail; +} + +DLLEXPORT void STDCALL FPDFAvail_Destroy(FPDF_AVAIL avail) { + delete (CFPDF_DataAvail*)avail; +} + +DLLEXPORT int STDCALL FPDFAvail_IsDocAvail(FPDF_AVAIL avail, + FX_DOWNLOADHINTS* hints) { + if (!avail || !hints) + return PDF_DATA_ERROR; + CFPDF_DownloadHintsWrap hints_wrap(hints); + return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsDocAvail(&hints_wrap); +} + +DLLEXPORT FPDF_DOCUMENT STDCALL +FPDFAvail_GetDocument(FPDF_AVAIL avail, FPDF_BYTESTRING password) { + CFPDF_DataAvail* pDataAvail = static_cast<CFPDF_DataAvail*>(avail); + if (!pDataAvail) + return nullptr; + + CPDF_Parser* pParser = new CPDF_Parser; + pParser->SetPassword(password); + CPDF_Parser::Error error = + pParser->StartAsyncParse(pDataAvail->m_pDataAvail->GetFileRead()); + if (error != CPDF_Parser::SUCCESS) { + delete pParser; + ProcessParseError(error); + return nullptr; + } + pDataAvail->m_pDataAvail->SetDocument(pParser->GetDocument()); + CheckUnSupportError(pParser->GetDocument(), FPDF_ERR_SUCCESS); + return FPDFDocumentFromCPDFDocument(pParser->GetDocument()); +} + +DLLEXPORT int STDCALL FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc) { + CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc); + return pDoc ? pDoc->GetParser()->GetFirstPageNo() : 0; +} + +DLLEXPORT int STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail, + int page_index, + FX_DOWNLOADHINTS* hints) { + if (!avail || !hints) + return PDF_DATA_ERROR; + CFPDF_DownloadHintsWrap hints_wrap(hints); + return ((CFPDF_DataAvail*)avail) + ->m_pDataAvail->IsPageAvail(page_index, &hints_wrap); +} + +DLLEXPORT int STDCALL FPDFAvail_IsFormAvail(FPDF_AVAIL avail, + FX_DOWNLOADHINTS* hints) { + if (!avail || !hints) + return PDF_FORM_ERROR; + CFPDF_DownloadHintsWrap hints_wrap(hints); + return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsFormAvail(&hints_wrap); +} + +DLLEXPORT int STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail) { + if (!avail) + return PDF_LINEARIZATION_UNKNOWN; + return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsLinearizedPDF(); +} |