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// 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()
{
if (m_pDataAvail) 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)
{
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 = 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();
}
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