| // 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 "../include/fsdk_define.h" |
| |
| extern void ProcessParseError(FX_DWORD err_code); |
| class CFPDF_FileAvailWrap : public IFX_FileAvail { |
| public: |
| CFPDF_FileAvailWrap() { m_pfileAvail = NULL; } |
| |
| void Set(FX_FILEAVAIL* pfileAvail) { m_pfileAvail = pfileAvail; } |
| |
| virtual FX_BOOL IsDataAvail(FX_FILESIZE offset, FX_DWORD size) { |
| 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; } |
| |
| void Set(FPDF_FILEACCESS* pFile) { m_pFileAccess = pFile; } |
| |
| virtual FX_FILESIZE GetSize() { return m_pFileAccess->m_FileLen; } |
| |
| virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) { |
| return m_pFileAccess->m_GetBlock(m_pFileAccess->m_Param, offset, |
| (uint8_t*)buffer, size); |
| } |
| |
| virtual void Release() {} |
| |
| private: |
| FPDF_FILEACCESS* m_pFileAccess; |
| }; |
| |
| class CFPDF_DownloadHintsWrap : public IFX_DownloadHints { |
| public: |
| CFPDF_DownloadHintsWrap(FX_DOWNLOADHINTS* pDownloadHints) { |
| m_pDownloadHints = pDownloadHints; |
| } |
| |
| public: |
| virtual void AddSegment(FX_FILESIZE offset, FX_DWORD size) { |
| 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 == NULL || hints == NULL) |
| return 0; |
| CFPDF_DownloadHintsWrap hints_wrap(hints); |
| return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsDocAvail(&hints_wrap); |
| } |
| |
| extern void CheckUnSupportError(CPDF_Document* pDoc, FX_DWORD err_code); |
| |
| DLLEXPORT FPDF_DOCUMENT STDCALL |
| FPDFAvail_GetDocument(FPDF_AVAIL avail, FPDF_BYTESTRING password) { |
| if (avail == NULL) |
| return NULL; |
| CPDF_Parser* pParser = new CPDF_Parser; |
| pParser->SetPassword(password); |
| |
| FX_DWORD err_code = pParser->StartAsynParse( |
| ((CFPDF_DataAvail*)avail)->m_pDataAvail->GetFileRead()); |
| if (err_code) { |
| delete pParser; |
| ProcessParseError(err_code); |
| return NULL; |
| } |
| ((CFPDF_DataAvail*)avail)->m_pDataAvail->SetDocument(pParser->GetDocument()); |
| CheckUnSupportError(pParser->GetDocument(), FPDF_ERR_SUCCESS); |
| return pParser->GetDocument(); |
| } |
| |
| DLLEXPORT int STDCALL FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc) { |
| if (doc == NULL) |
| return 0; |
| CPDF_Document* pDoc = (CPDF_Document*)doc; |
| return ((CPDF_Parser*)pDoc->GetParser())->GetFirstPageNo(); |
| } |
| |
| DLLEXPORT int STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail, |
| int page_index, |
| FX_DOWNLOADHINTS* hints) { |
| if (avail == NULL || hints == NULL) |
| return 0; |
| 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 == NULL || hints == NULL) |
| return -1; |
| CFPDF_DownloadHintsWrap hints_wrap(hints); |
| return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsFormAvail(&hints_wrap); |
| } |
| |
| DLLEXPORT FPDF_BOOL STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail) { |
| if (avail == NULL) |
| return -1; |
| return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsLinearizedPDF(); |
| } |