// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "public/fpdfview.h"
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#include <memory>
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#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
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#include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h"
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#include "core/fpdfapi/include/cpdf_modulemgr.h"
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#include "core/fxcodec/include/fx_codec.h"
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#include "core/fxcrt/include/fx_safe_types.h"
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#include "core/fxge/include/fx_ge.h"
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#include "fpdfsdk/include/fsdk_define.h"
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#include "fpdfsdk/include/fsdk_mgr.h"
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#include "fpdfsdk/include/fsdk_rendercontext.h"
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#include "fpdfsdk/javascript/ijs_runtime.h"
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#include "public/fpdf_ext.h"
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#include "public/fpdf_progressive.h"
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#include "third_party/base/numerics/safe_conversions_impl.h"
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#ifdef PDF_ENABLE_XFA
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#include "fpdfsdk/fpdfxfa/include/fpdfxfa_app.h"
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#include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
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#include "fpdfsdk/fpdfxfa/include/fpdfxfa_page.h"
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#include "fpdfsdk/fpdfxfa/include/fpdfxfa_util.h"
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#include "public/fpdf_formfill.h"
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#endif // PDF_ENABLE_XFA
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#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
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#include "core/fxge/include/fx_ge_win32.h"
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#endif
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UnderlyingDocumentType* UnderlyingFromFPDFDocument(FPDF_DOCUMENT doc) {
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return static_cast<UnderlyingDocumentType*>(doc);
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}
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FPDF_DOCUMENT FPDFDocumentFromUnderlying(UnderlyingDocumentType* doc) {
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return static_cast<FPDF_DOCUMENT>(doc);
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}
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UnderlyingPageType* UnderlyingFromFPDFPage(FPDF_PAGE page) {
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return static_cast<UnderlyingPageType*>(page);
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}
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CPDF_Document* CPDFDocumentFromFPDFDocument(FPDF_DOCUMENT doc) {
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#ifdef PDF_ENABLE_XFA
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return doc ? UnderlyingFromFPDFDocument(doc)->GetPDFDoc() : nullptr;
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#else // PDF_ENABLE_XFA
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return UnderlyingFromFPDFDocument(doc);
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#endif // PDF_ENABLE_XFA
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}
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FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
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#ifdef PDF_ENABLE_XFA
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return doc ? FPDFDocumentFromUnderlying(
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new CPDFXFA_Document(doc, CPDFXFA_App::GetInstance()))
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: nullptr;
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#else // PDF_ENABLE_XFA
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return FPDFDocumentFromUnderlying(doc);
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#endif // PDF_ENABLE_XFA
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}
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CPDF_Page* CPDFPageFromFPDFPage(FPDF_PAGE page) {
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#ifdef PDF_ENABLE_XFA
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return page ? UnderlyingFromFPDFPage(page)->GetPDFPage() : nullptr;
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#else // PDF_ENABLE_XFA
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return UnderlyingFromFPDFPage(page);
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#endif // PDF_ENABLE_XFA
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}
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CFX_DIBitmap* CFXBitmapFromFPDFBitmap(FPDF_BITMAP bitmap) {
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return static_cast<CFX_DIBitmap*>(bitmap);
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}
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#ifdef PDF_ENABLE_XFA
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CFPDF_FileStream::CFPDF_FileStream(FPDF_FILEHANDLER* pFS) {
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m_pFS = pFS;
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m_nCurPos = 0;
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}
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IFX_FileStream* CFPDF_FileStream::Retain() {
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return this;
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}
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void CFPDF_FileStream::Release() {
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if (m_pFS && m_pFS->Release)
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m_pFS->Release(m_pFS->clientData);
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delete this;
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}
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FX_FILESIZE CFPDF_FileStream::GetSize() {
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if (m_pFS && m_pFS->GetSize)
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return (FX_FILESIZE)m_pFS->GetSize(m_pFS->clientData);
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return 0;
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}
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FX_BOOL CFPDF_FileStream::IsEOF() {
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return m_nCurPos >= GetSize();
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}
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FX_FILESIZE CFPDF_FileStream::GetPosition() {
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return m_nCurPos;
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}
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FX_BOOL CFPDF_FileStream::ReadBlock(void* buffer,
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FX_FILESIZE offset,
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size_t size) {
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if (!buffer || !size || !m_pFS->ReadBlock)
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return FALSE;
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if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
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(FPDF_DWORD)size) == 0) {
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m_nCurPos = offset + size;
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return TRUE;
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}
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return FALSE;
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}
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size_t CFPDF_FileStream::ReadBlock(void* buffer, size_t size) {
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if (!buffer || !size || !m_pFS->ReadBlock)
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return 0;
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FX_FILESIZE nSize = GetSize();
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if (m_nCurPos >= nSize)
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return 0;
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FX_FILESIZE dwAvail = nSize - m_nCurPos;
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if (dwAvail < (FX_FILESIZE)size)
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size = (size_t)dwAvail;
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if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)m_nCurPos, buffer,
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(FPDF_DWORD)size) == 0) {
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m_nCurPos += size;
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return size;
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}
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return 0;
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}
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FX_BOOL CFPDF_FileStream::WriteBlock(const void* buffer,
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FX_FILESIZE offset,
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size_t size) {
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if (!m_pFS || !m_pFS->WriteBlock)
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return FALSE;
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if (m_pFS->WriteBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
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(FPDF_DWORD)size) == 0) {
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m_nCurPos = offset + size;
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return TRUE;
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}
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return FALSE;
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}
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FX_BOOL CFPDF_FileStream::Flush() {
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if (!m_pFS || !m_pFS->Flush)
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return TRUE;
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return m_pFS->Flush(m_pFS->clientData) == 0;
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}
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#endif // PDF_ENABLE_XFA
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CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess) {
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m_FileAccess = *pFileAccess;
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#ifdef PDF_ENABLE_XFA
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m_BufferOffset = (uint32_t)-1;
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#endif // PDF_ENABLE_XFA
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}
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#ifdef PDF_ENABLE_XFA
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CFX_ByteString CPDF_CustomAccess::GetFullPath() {
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return "";
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}
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FX_BOOL CPDF_CustomAccess::GetByte(uint32_t pos, uint8_t& ch) {
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if (pos >= m_FileAccess.m_FileLen)
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return FALSE;
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if (m_BufferOffset == (uint32_t)-1 || pos < m_BufferOffset ||
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pos >= m_BufferOffset + 512) {
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// Need to read from file access
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m_BufferOffset = pos;
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int size = 512;
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if (pos + 512 > m_FileAccess.m_FileLen)
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size = m_FileAccess.m_FileLen - pos;
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if (!m_FileAccess.m_GetBlock(m_FileAccess.m_Param, m_BufferOffset, m_Buffer,
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size))
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return FALSE;
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}
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ch = m_Buffer[pos - m_BufferOffset];
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return TRUE;
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}
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FX_BOOL CPDF_CustomAccess::GetBlock(uint32_t pos,
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uint8_t* pBuf,
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uint32_t size) {
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if (pos + size > m_FileAccess.m_FileLen)
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return FALSE;
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return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, pos, pBuf, size);
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}
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#endif // PDF_ENABLE_XFA
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FX_FILESIZE CPDF_CustomAccess::GetSize() {
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return m_FileAccess.m_FileLen;
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}
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void CPDF_CustomAccess::Release() {
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delete this;
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}
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FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer,
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FX_FILESIZE offset,
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size_t size) {
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if (offset < 0) {
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return FALSE;
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}
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FX_SAFE_FILESIZE newPos =
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pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
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newPos += offset;
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if (!newPos.IsValid() ||
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newPos.ValueOrDie() > static_cast<FX_FILESIZE>(m_FileAccess.m_FileLen)) {
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return FALSE;
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}
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return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset, (uint8_t*)buffer,
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size);
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}
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// 0 bit: FPDF_POLICY_MACHINETIME_ACCESS
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static uint32_t foxit_sandbox_policy = 0xFFFFFFFF;
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void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable) {
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switch (policy) {
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case FPDF_POLICY_MACHINETIME_ACCESS: {
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if (enable)
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foxit_sandbox_policy |= 0x01;
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else
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foxit_sandbox_policy &= 0xFFFFFFFE;
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} break;
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default:
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break;
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}
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}
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FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy) {
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switch (policy) {
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case FPDF_POLICY_MACHINETIME_ACCESS:
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return !!(foxit_sandbox_policy & 0x01);
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default:
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return FALSE;
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}
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}
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CCodec_ModuleMgr* g_pCodecModule = nullptr;
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DLLEXPORT void STDCALL FPDF_InitLibrary() {
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FPDF_InitLibraryWithConfig(nullptr);
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}
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DLLEXPORT void STDCALL
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FPDF_InitLibraryWithConfig(const FPDF_LIBRARY_CONFIG* cfg) {
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g_pCodecModule = new CCodec_ModuleMgr();
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CFX_GEModule::Create(cfg ? cfg->m_pUserFontPaths : nullptr, g_pCodecModule);
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CPDF_ModuleMgr::Create();
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CPDF_ModuleMgr* pModuleMgr = CPDF_ModuleMgr::Get();
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pModuleMgr->SetCodecModule(g_pCodecModule);
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pModuleMgr->InitPageModule();
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pModuleMgr->LoadEmbeddedGB1CMaps();
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pModuleMgr->LoadEmbeddedJapan1CMaps();
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pModuleMgr->LoadEmbeddedCNS1CMaps();
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pModuleMgr->LoadEmbeddedKorea1CMaps();
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#ifdef PDF_ENABLE_XFA
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CPDFXFA_App::GetInstance()->Initialize(
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(cfg && cfg->version >= 2) ? static_cast<v8::Isolate*>(cfg->m_pIsolate)
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: nullptr);
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#endif // PDF_ENABLE_XFA
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if (cfg && cfg->version >= 2)
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IJS_Runtime::Initialize(cfg->m_v8EmbedderSlot, cfg->m_pIsolate);
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}
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DLLEXPORT void STDCALL FPDF_DestroyLibrary() {
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#ifdef PDF_ENABLE_XFA
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CPDFXFA_App::ReleaseInstance();
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#endif // PDF_ENABLE_XFA
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CPDF_ModuleMgr::Destroy();
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CFX_GEModule::Destroy();
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delete g_pCodecModule;
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g_pCodecModule = nullptr;
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IJS_Runtime::Destroy();
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}
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#ifndef _WIN32
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int g_LastError;
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void SetLastError(int err) {
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g_LastError = err;
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}
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int GetLastError() {
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return g_LastError;
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}
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#endif // _WIN32
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void ProcessParseError(CPDF_Parser::Error err) {
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uint32_t err_code = FPDF_ERR_SUCCESS;
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// Translate FPDFAPI error code to FPDFVIEW error code
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switch (err) {
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case CPDF_Parser::SUCCESS:
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err_code = FPDF_ERR_SUCCESS;
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break;
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case CPDF_Parser::FILE_ERROR:
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err_code = FPDF_ERR_FILE;
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break;
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case CPDF_Parser::FORMAT_ERROR:
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err_code = FPDF_ERR_FORMAT;
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break;
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case CPDF_Parser::PASSWORD_ERROR:
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err_code = FPDF_ERR_PASSWORD;
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break;
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case CPDF_Parser::HANDLER_ERROR:
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err_code = FPDF_ERR_SECURITY;
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break;
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}
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SetLastError(err_code);
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}
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DLLEXPORT void STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy,
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FPDF_BOOL enable) {
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return FSDK_SetSandBoxPolicy(policy, enable);
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}
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DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path,
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FPDF_BYTESTRING password) {
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// NOTE: the creation of the file needs to be by the embedder on the
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// other side of this API.
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IFX_FileRead* pFileAccess = FX_CreateFileRead((const FX_CHAR*)file_path);
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if (!pFileAccess) {
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return nullptr;
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}
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CPDF_Parser* pParser = new CPDF_Parser;
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pParser->SetPassword(password);
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CPDF_Parser::Error error = pParser->StartParse(pFileAccess);
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if (error != CPDF_Parser::SUCCESS) {
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delete pParser;
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ProcessParseError(error);
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return nullptr;
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}
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#ifdef PDF_ENABLE_XFA
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CPDF_Document* pPDFDoc = pParser->GetDocument();
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if (!pPDFDoc)
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return nullptr;
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CPDFXFA_App* pProvider = CPDFXFA_App::GetInstance();
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return new CPDFXFA_Document(pPDFDoc, pProvider);
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#else // PDF_ENABLE_XFA
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return pParser->GetDocument();
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#endif // PDF_ENABLE_XFA
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}
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#ifdef PDF_ENABLE_XFA
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DLLEXPORT FPDF_BOOL STDCALL FPDF_HasXFAField(FPDF_DOCUMENT document,
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int* docType) {
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if (!document)
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return FALSE;
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CPDF_Document* pdfDoc =
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(static_cast<CPDFXFA_Document*>(document))->GetPDFDoc();
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if (!pdfDoc)
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return FALSE;
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CPDF_Dictionary* pRoot = pdfDoc->GetRoot();
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if (!pRoot)
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return FALSE;
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CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
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if (!pAcroForm)
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return FALSE;
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CPDF_Object* pXFA = pAcroForm->GetObjectBy("XFA");
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if (!pXFA)
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return FALSE;
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bool bDynamicXFA = pRoot->GetBooleanBy("NeedsRendering", false);
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*docType = bDynamicXFA ? DOCTYPE_DYNAMIC_XFA : DOCTYPE_STATIC_XFA;
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return TRUE;
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}
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DLLEXPORT FPDF_BOOL STDCALL FPDF_LoadXFA(FPDF_DOCUMENT document) {
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return document && (static_cast<CPDFXFA_Document*>(document))->LoadXFADoc();
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}
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#endif // PDF_ENABLE_XFA
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class CMemFile final : public IFX_FileRead {
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public:
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CMemFile(uint8_t* pBuf, FX_FILESIZE size) : m_pBuf(pBuf), m_size(size) {}
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void Release() override { delete this; }
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FX_FILESIZE GetSize() override { return m_size; }
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FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override {
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if (offset < 0) {
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return FALSE;
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}
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FX_SAFE_FILESIZE newPos =
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pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
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newPos += offset;
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if (!newPos.IsValid() || newPos.ValueOrDie() > m_size) {
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return FALSE;
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}
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FXSYS_memcpy(buffer, m_pBuf + offset, size);
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return TRUE;
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}
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private:
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~CMemFile() override {}
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uint8_t* const m_pBuf;
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const FX_FILESIZE m_size;
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};
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DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf,
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int size,
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FPDF_BYTESTRING password) {
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CPDF_Parser* pParser = new CPDF_Parser;
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pParser->SetPassword(password);
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CMemFile* pMemFile = new CMemFile((uint8_t*)data_buf, size);
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CPDF_Parser::Error error = pParser->StartParse(pMemFile);
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if (error != CPDF_Parser::SUCCESS) {
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delete pParser;
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ProcessParseError(error);
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return nullptr;
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}
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CPDF_Document* pDoc = pParser ? pParser->GetDocument() : nullptr;
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CheckUnSupportError(pDoc, error);
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return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
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}
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DLLEXPORT FPDF_DOCUMENT STDCALL
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FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
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FPDF_BYTESTRING password) {
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CPDF_Parser* pParser = new CPDF_Parser;
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pParser->SetPassword(password);
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CPDF_CustomAccess* pFile = new CPDF_CustomAccess(pFileAccess);
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CPDF_Parser::Error error = pParser->StartParse(pFile);
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if (error != CPDF_Parser::SUCCESS) {
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delete pParser;
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ProcessParseError(error);
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return nullptr;
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}
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CPDF_Document* pDoc = pParser ? pParser->GetDocument() : nullptr;
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CheckUnSupportError(pDoc, error);
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return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
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}
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DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc,
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int* fileVersion) {
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if (!fileVersion)
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return FALSE;
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*fileVersion = 0;
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc);
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if (!pDoc)
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return FALSE;
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CPDF_Parser* pParser = pDoc->GetParser();
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if (!pParser)
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return FALSE;
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*fileVersion = pParser->GetFileVersion();
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return TRUE;
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}
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// jabdelmalek: changed return type from uint32_t to build on Linux (and match
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// header).
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DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document) {
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
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// https://bugs.chromium.org/p/pdfium/issues/detail?id=499
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if (!pDoc) {
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#ifndef PDF_ENABLE_XFA
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return 0;
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#else // PDF_ENABLE_XFA
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return 0xFFFFFFFF;
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#endif // PDF_ENABLE_XFA
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}
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return pDoc->GetUserPermissions();
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}
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DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document) {
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
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if (!pDoc || !pDoc->GetParser())
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return -1;
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CPDF_Dictionary* pDict = pDoc->GetParser()->GetEncryptDict();
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return pDict ? pDict->GetIntegerBy("R") : -1;
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}
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DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document) {
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UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
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return pDoc ? pDoc->GetPageCount() : 0;
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}
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DLLEXPORT FPDF_PAGE STDCALL FPDF_LoadPage(FPDF_DOCUMENT document,
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int page_index) {
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UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
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if (!pDoc)
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return nullptr;
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if (page_index < 0 || page_index >= pDoc->GetPageCount())
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return nullptr;
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#ifdef PDF_ENABLE_XFA
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return pDoc->GetPage(page_index);
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#else // PDF_ENABLE_XFA
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CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
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if (!pDict)
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return nullptr;
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CPDF_Page* pPage = new CPDF_Page(pDoc, pDict, true);
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pPage->ParseContent();
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return pPage;
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#endif // PDF_ENABLE_XFA
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}
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DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page) {
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UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
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return pPage ? pPage->GetPageWidth() : 0.0;
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}
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DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page) {
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UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
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return pPage ? pPage->GetPageHeight() : 0.0;
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}
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#if defined(_WIN32)
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DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc,
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FPDF_PAGE page,
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int start_x,
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int start_y,
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int size_x,
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int size_y,
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int rotate,
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int flags) {
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CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
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if (!pPage)
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return;
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CRenderContext* pContext = new CRenderContext;
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pPage->SetRenderContext(std::unique_ptr<CFX_Deletable>(pContext));
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CFX_DIBitmap* pBitmap = nullptr;
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FX_BOOL bBackgroundAlphaNeeded = pPage->BackgroundAlphaNeeded();
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FX_BOOL bHasImageMask = pPage->HasImageMask();
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if (bBackgroundAlphaNeeded || bHasImageMask) {
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pBitmap = new CFX_DIBitmap;
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pBitmap->Create(size_x, size_y, FXDIB_Argb);
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pBitmap->Clear(0x00ffffff);
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CFX_FxgeDevice* pDevice = new CFX_FxgeDevice;
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pContext->m_pDevice = pDevice;
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pDevice->Attach(pBitmap, false, nullptr, false);
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} else {
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pContext->m_pDevice = new CFX_WindowsDevice(dc);
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}
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FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
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rotate, flags, TRUE, nullptr);
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if (bBackgroundAlphaNeeded || bHasImageMask) {
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if (pBitmap) {
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CFX_WindowsDevice WinDC(dc);
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if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
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CFX_DIBitmap* pDst = new CFX_DIBitmap;
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int pitch = pBitmap->GetPitch();
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pDst->Create(size_x, size_y, FXDIB_Rgb32);
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FXSYS_memset(pDst->GetBuffer(), -1, pitch * size_y);
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pDst->CompositeBitmap(0, 0, size_x, size_y, pBitmap, 0, 0,
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FXDIB_BLEND_NORMAL, nullptr, FALSE, nullptr);
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WinDC.StretchDIBits(pDst, 0, 0, size_x, size_y);
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delete pDst;
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} else {
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WinDC.SetDIBits(pBitmap, 0, 0);
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}
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}
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}
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if (bBackgroundAlphaNeeded || bHasImageMask)
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delete pBitmap;
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pPage->SetRenderContext(std::unique_ptr<CFX_Deletable>());
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}
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#endif // defined(_WIN32)
|
|
DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap,
|
FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int flags) {
|
if (!bitmap)
|
return;
|
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return;
|
|
CRenderContext* pContext = new CRenderContext;
|
pPage->SetRenderContext(std::unique_ptr<CFX_Deletable>(pContext));
|
CFX_FxgeDevice* pDevice = new CFX_FxgeDevice;
|
pContext->m_pDevice = pDevice;
|
CFX_DIBitmap* pBitmap = CFXBitmapFromFPDFBitmap(bitmap);
|
pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
|
|
FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
|
rotate, flags, TRUE, nullptr);
|
|
pPage->SetRenderContext(std::unique_ptr<CFX_Deletable>());
|
}
|
|
#ifdef _SKIA_SUPPORT_
|
DLLEXPORT FPDF_RECORDER STDCALL FPDF_RenderPageSkp(FPDF_PAGE page,
|
int size_x,
|
int size_y) {
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return nullptr;
|
|
CRenderContext* pContext = new CRenderContext;
|
pPage->SetRenderContext(std::unique_ptr<CFX_Deletable>(pContext));
|
CFX_FxgeDevice* skDevice = new CFX_FxgeDevice;
|
FPDF_RECORDER recorder = skDevice->CreateRecorder(size_x, size_y);
|
pContext->m_pDevice = skDevice;
|
FPDF_RenderPage_Retail(pContext, page, 0, 0, size_x, size_y, 0, 0, TRUE,
|
nullptr);
|
pPage->SetRenderContext(std::unique_ptr<CFX_Deletable>());
|
return recorder;
|
}
|
#endif
|
|
DLLEXPORT void STDCALL FPDF_ClosePage(FPDF_PAGE page) {
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
if (!page)
|
return;
|
#ifdef PDF_ENABLE_XFA
|
pPage->Release();
|
#else // PDF_ENABLE_XFA
|
CPDFSDK_PageView* pPageView =
|
static_cast<CPDFSDK_PageView*>(pPage->GetView());
|
if (pPageView && pPageView->IsLocked()) {
|
pPageView->TakeOverPage();
|
return;
|
}
|
delete pPage;
|
#endif // PDF_ENABLE_XFA
|
}
|
|
DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document) {
|
#ifdef PDF_ENABLE_XFA
|
delete UnderlyingFromFPDFDocument(document);
|
#else // PDF_ENABLE_XFA
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return;
|
CPDF_Parser* pParser = pDoc->GetParser();
|
if (!pParser) {
|
delete pDoc;
|
return;
|
}
|
delete pParser;
|
#endif // PDF_ENABLE_XFA
|
}
|
|
DLLEXPORT unsigned long STDCALL FPDF_GetLastError() {
|
return GetLastError();
|
}
|
|
DLLEXPORT void STDCALL FPDF_DeviceToPage(FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int device_x,
|
int device_y,
|
double* page_x,
|
double* page_y) {
|
if (!page || !page_x || !page_y)
|
return;
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
#ifdef PDF_ENABLE_XFA
|
pPage->DeviceToPage(start_x, start_y, size_x, size_y, rotate, device_x,
|
device_y, page_x, page_y);
|
#else // PDF_ENABLE_XFA
|
CFX_Matrix page2device;
|
pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y,
|
rotate);
|
CFX_Matrix device2page;
|
device2page.SetReverse(page2device);
|
FX_FLOAT page_x_f, page_y_f;
|
device2page.Transform((FX_FLOAT)(device_x), (FX_FLOAT)(device_y), page_x_f,
|
page_y_f);
|
*page_x = (page_x_f);
|
*page_y = (page_y_f);
|
#endif // PDF_ENABLE_XFA
|
}
|
|
DLLEXPORT void STDCALL FPDF_PageToDevice(FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
double page_x,
|
double page_y,
|
int* device_x,
|
int* device_y) {
|
if (!device_x || !device_y)
|
return;
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
if (!pPage)
|
return;
|
#ifdef PDF_ENABLE_XFA
|
pPage->PageToDevice(start_x, start_y, size_x, size_y, rotate, page_x, page_y,
|
device_x, device_y);
|
#else // PDF_ENABLE_XFA
|
CFX_Matrix page2device;
|
pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y,
|
rotate);
|
FX_FLOAT device_x_f, device_y_f;
|
page2device.Transform(((FX_FLOAT)page_x), ((FX_FLOAT)page_y), device_x_f,
|
device_y_f);
|
*device_x = FXSYS_round(device_x_f);
|
*device_y = FXSYS_round(device_y_f);
|
#endif // PDF_ENABLE_XFA
|
}
|
|
DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width,
|
int height,
|
int alpha) {
|
std::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap);
|
if (!pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32)) {
|
return nullptr;
|
}
|
return pBitmap.release();
|
}
|
|
DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_CreateEx(int width,
|
int height,
|
int format,
|
void* first_scan,
|
int stride) {
|
FXDIB_Format fx_format;
|
switch (format) {
|
case FPDFBitmap_Gray:
|
fx_format = FXDIB_8bppRgb;
|
break;
|
case FPDFBitmap_BGR:
|
fx_format = FXDIB_Rgb;
|
break;
|
case FPDFBitmap_BGRx:
|
fx_format = FXDIB_Rgb32;
|
break;
|
case FPDFBitmap_BGRA:
|
fx_format = FXDIB_Argb;
|
break;
|
default:
|
return nullptr;
|
}
|
CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
|
pBitmap->Create(width, height, fx_format, (uint8_t*)first_scan, stride);
|
return pBitmap;
|
}
|
|
DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap,
|
int left,
|
int top,
|
int width,
|
int height,
|
FPDF_DWORD color) {
|
if (!bitmap)
|
return;
|
|
CFX_FxgeDevice device;
|
CFX_DIBitmap* pBitmap = CFXBitmapFromFPDFBitmap(bitmap);
|
device.Attach(pBitmap, false, nullptr, false);
|
if (!pBitmap->HasAlpha())
|
color |= 0xFF000000;
|
FX_RECT rect(left, top, left + width, top + height);
|
device.FillRect(&rect, color);
|
}
|
|
DLLEXPORT void* STDCALL FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetBuffer() : nullptr;
|
}
|
|
DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetWidth() : 0;
|
}
|
|
DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetHeight() : 0;
|
}
|
|
DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetPitch() : 0;
|
}
|
|
DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap) {
|
delete CFXBitmapFromFPDFBitmap(bitmap);
|
}
|
|
void FPDF_RenderPage_Retail(CRenderContext* pContext,
|
FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int flags,
|
FX_BOOL bNeedToRestore,
|
IFSDK_PAUSE_Adapter* pause) {
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return;
|
|
if (!pContext->m_pOptions)
|
pContext->m_pOptions = new CPDF_RenderOptions;
|
|
if (flags & FPDF_LCD_TEXT)
|
pContext->m_pOptions->m_Flags |= RENDER_CLEARTYPE;
|
else
|
pContext->m_pOptions->m_Flags &= ~RENDER_CLEARTYPE;
|
if (flags & FPDF_NO_NATIVETEXT)
|
pContext->m_pOptions->m_Flags |= RENDER_NO_NATIVETEXT;
|
if (flags & FPDF_RENDER_LIMITEDIMAGECACHE)
|
pContext->m_pOptions->m_Flags |= RENDER_LIMITEDIMAGECACHE;
|
if (flags & FPDF_RENDER_FORCEHALFTONE)
|
pContext->m_pOptions->m_Flags |= RENDER_FORCE_HALFTONE;
|
#ifndef PDF_ENABLE_XFA
|
if (flags & FPDF_RENDER_NO_SMOOTHTEXT)
|
pContext->m_pOptions->m_Flags |= RENDER_NOTEXTSMOOTH;
|
if (flags & FPDF_RENDER_NO_SMOOTHIMAGE)
|
pContext->m_pOptions->m_Flags |= RENDER_NOIMAGESMOOTH;
|
if (flags & FPDF_RENDER_NO_SMOOTHPATH)
|
pContext->m_pOptions->m_Flags |= RENDER_NOPATHSMOOTH;
|
#endif // PDF_ENABLE_XFA
|
// Grayscale output
|
if (flags & FPDF_GRAYSCALE) {
|
pContext->m_pOptions->m_ColorMode = RENDER_COLOR_GRAY;
|
pContext->m_pOptions->m_ForeColor = 0;
|
pContext->m_pOptions->m_BackColor = 0xffffff;
|
}
|
const CPDF_OCContext::UsageType usage =
|
(flags & FPDF_PRINTING) ? CPDF_OCContext::Print : CPDF_OCContext::View;
|
pContext->m_pOptions->m_AddFlags = flags >> 8;
|
pContext->m_pOptions->m_pOCContext =
|
new CPDF_OCContext(pPage->m_pDocument, usage);
|
|
CFX_Matrix matrix;
|
pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate);
|
|
pContext->m_pDevice->SaveState();
|
pContext->m_pDevice->SetClip_Rect(
|
FX_RECT(start_x, start_y, start_x + size_x, start_y + size_y));
|
|
pContext->m_pContext = new CPDF_RenderContext(pPage);
|
pContext->m_pContext->AppendLayer(pPage, &matrix);
|
|
if (flags & FPDF_ANNOT) {
|
pContext->m_pAnnots = new CPDF_AnnotList(pPage);
|
FX_BOOL bPrinting = pContext->m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
|
pContext->m_pAnnots->DisplayAnnots(pPage, pContext->m_pContext, bPrinting,
|
&matrix, TRUE, nullptr);
|
}
|
|
pContext->m_pRenderer = new CPDF_ProgressiveRenderer(
|
pContext->m_pContext, pContext->m_pDevice, pContext->m_pOptions);
|
pContext->m_pRenderer->Start(pause);
|
if (bNeedToRestore)
|
pContext->m_pDevice->RestoreState(false);
|
}
|
|
DLLEXPORT int STDCALL FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document,
|
int page_index,
|
double* width,
|
double* height) {
|
UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
|
if (!pDoc)
|
return FALSE;
|
|
#ifdef PDF_ENABLE_XFA
|
int count = pDoc->GetPageCount();
|
if (page_index < 0 || page_index >= count)
|
return FALSE;
|
CPDFXFA_Page* pPage = pDoc->GetPage(page_index);
|
if (!pPage)
|
return FALSE;
|
*width = pPage->GetPageWidth();
|
*height = pPage->GetPageHeight();
|
#else // PDF_ENABLE_XFA
|
CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
|
if (!pDict)
|
return FALSE;
|
|
CPDF_Page page(pDoc, pDict, true);
|
*width = page.GetPageWidth();
|
*height = page.GetPageHeight();
|
#endif // PDF_ENABLE_XFA
|
|
return TRUE;
|
}
|
|
DLLEXPORT FPDF_BOOL STDCALL
|
FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return TRUE;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
return viewRef.PrintScaling();
|
}
|
|
DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return 1;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
return viewRef.NumCopies();
|
}
|
|
DLLEXPORT FPDF_PAGERANGE STDCALL
|
FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
return viewRef.PrintPageRange();
|
}
|
|
DLLEXPORT FPDF_DUPLEXTYPE STDCALL
|
FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return DuplexUndefined;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
CFX_ByteString duplex = viewRef.Duplex();
|
if ("Simplex" == duplex)
|
return Simplex;
|
if ("DuplexFlipShortEdge" == duplex)
|
return DuplexFlipShortEdge;
|
if ("DuplexFlipLongEdge" == duplex)
|
return DuplexFlipLongEdge;
|
return DuplexUndefined;
|
}
|
|
DLLEXPORT FPDF_DWORD STDCALL FPDF_CountNamedDests(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return 0;
|
|
CPDF_Dictionary* pRoot = pDoc->GetRoot();
|
if (!pRoot)
|
return 0;
|
|
CPDF_NameTree nameTree(pDoc, "Dests");
|
pdfium::base::CheckedNumeric<FPDF_DWORD> count = nameTree.GetCount();
|
CPDF_Dictionary* pDest = pRoot->GetDictBy("Dests");
|
if (pDest)
|
count += pDest->GetCount();
|
|
if (!count.IsValid())
|
return 0;
|
|
return count.ValueOrDie();
|
}
|
|
DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,
|
FPDF_BYTESTRING name) {
|
if (!name || name[0] == 0)
|
return nullptr;
|
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
|
CPDF_NameTree name_tree(pDoc, "Dests");
|
return name_tree.LookupNamedDest(pDoc, name);
|
}
|
|
#ifdef PDF_ENABLE_XFA
|
DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Init(FPDF_BSTR* str) {
|
if (!str)
|
return -1;
|
|
FXSYS_memset(str, 0, sizeof(FPDF_BSTR));
|
return 0;
|
}
|
|
DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Set(FPDF_BSTR* str,
|
FPDF_LPCSTR bstr,
|
int length) {
|
if (!str)
|
return -1;
|
if (!bstr || !length)
|
return -1;
|
if (length == -1)
|
length = FXSYS_strlen(bstr);
|
|
if (length == 0) {
|
if (str->str) {
|
FX_Free(str->str);
|
str->str = nullptr;
|
}
|
str->len = 0;
|
return 0;
|
}
|
|
if (str->str && str->len < length)
|
str->str = FX_Realloc(char, str->str, length + 1);
|
else if (!str->str)
|
str->str = FX_Alloc(char, length + 1);
|
|
str->str[length] = 0;
|
FXSYS_memcpy(str->str, bstr, length);
|
str->len = length;
|
|
return 0;
|
}
|
|
DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Clear(FPDF_BSTR* str) {
|
if (!str)
|
return -1;
|
|
if (str->str) {
|
FX_Free(str->str);
|
str->str = nullptr;
|
}
|
str->len = 0;
|
return 0;
|
}
|
#endif // PDF_ENABLE_XFA
|
|
DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document,
|
int index,
|
void* buffer,
|
long* buflen) {
|
if (!buffer)
|
*buflen = 0;
|
|
if (index < 0)
|
return nullptr;
|
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
|
CPDF_Dictionary* pRoot = pDoc->GetRoot();
|
if (!pRoot)
|
return nullptr;
|
|
CPDF_Object* pDestObj = nullptr;
|
CFX_ByteString bsName;
|
CPDF_NameTree nameTree(pDoc, "Dests");
|
int count = nameTree.GetCount();
|
if (index >= count) {
|
CPDF_Dictionary* pDest = pRoot->GetDictBy("Dests");
|
if (!pDest)
|
return nullptr;
|
|
pdfium::base::CheckedNumeric<int> checked_count = count;
|
checked_count += pDest->GetCount();
|
if (!checked_count.IsValid() || index >= checked_count.ValueOrDie())
|
return nullptr;
|
|
index -= count;
|
int i = 0;
|
for (const auto& it : *pDest) {
|
bsName = it.first;
|
pDestObj = it.second;
|
if (!pDestObj)
|
continue;
|
if (i == index)
|
break;
|
i++;
|
}
|
} else {
|
pDestObj = nameTree.LookupValue(index, bsName);
|
}
|
if (!pDestObj)
|
return nullptr;
|
if (CPDF_Dictionary* pDict = pDestObj->AsDictionary()) {
|
pDestObj = pDict->GetArrayBy("D");
|
if (!pDestObj)
|
return nullptr;
|
}
|
if (!pDestObj->IsArray())
|
return nullptr;
|
|
CFX_WideString wsName = PDF_DecodeText(bsName);
|
CFX_ByteString utf16Name = wsName.UTF16LE_Encode();
|
int len = utf16Name.GetLength();
|
if (!buffer) {
|
*buflen = len;
|
} else if (*buflen >= len) {
|
memcpy(buffer, utf16Name.c_str(), len);
|
*buflen = len;
|
} else {
|
*buflen = -1;
|
}
|
return (FPDF_DEST)pDestObj;
|
}
|
