| // 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 "../include/fsdk_define.h" |
| #include "../include/fpdf_dataavail.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, (FX_LPBYTE)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 CFX_Object |
| { |
| public: |
| CFPDF_DataAvail() |
| { |
| m_pDataAvail = NULL; |
| } |
| |
| ~CFPDF_DataAvail() |
| { |
| if (m_pDataAvail) delete m_pDataAvail; |
| } |
| |
| CPDF_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 = FX_NEW CFPDF_DataAvail; |
| pAvail->m_FileAvail.Set(file_avail); |
| pAvail->m_FileRead.Set(file); |
| pAvail->m_pDataAvail = FX_NEW CPDF_DataAvail(&pAvail->m_FileAvail, &pAvail->m_FileRead); |
| return pAvail; |
| } |
| |
| DLLEXPORT void STDCALL FPDFAvail_Destroy(FPDF_AVAIL avail) |
| { |
| if (avail == NULL) return; |
| 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 = FX_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(); |
| |
| } |