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authordsinclair <dsinclair@chromium.org>2016-10-04 11:55:50 -0700
committerCommit bot <commit-bot@chromium.org>2016-10-04 11:55:51 -0700
commit488b7ad845d6de212d89cd957303b294ecfa5922 (patch)
treeadfdd2327724bd3597a1a7614bbe29a01a0c8dc0 /core/fpdfapi/parser/cpdf_stream.cpp
parent41872fa5ac7448a50f66ad56d7bde8d1aa77db4b (diff)
downloadpdfium-488b7ad845d6de212d89cd957303b294ecfa5922.tar.xz
Move core/fpdfapi/fpdf_parser to core/fpdfapi/parser
BUG=pdfium:603 Review-Url: https://codereview.chromium.org/2392603004
Diffstat (limited to 'core/fpdfapi/parser/cpdf_stream.cpp')
-rw-r--r--core/fpdfapi/parser/cpdf_stream.cpp116
1 files changed, 116 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_stream.cpp b/core/fpdfapi/parser/cpdf_stream.cpp
new file mode 100644
index 0000000000..c221edec68
--- /dev/null
+++ b/core/fpdfapi/parser/cpdf_stream.cpp
@@ -0,0 +1,116 @@
+// Copyright 2016 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 "core/fpdfapi/parser/cpdf_stream.h"
+
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_stream_acc.h"
+#include "core/fpdfapi/parser/fpdf_parser_decode.h"
+#include "third_party/base/numerics/safe_conversions.h"
+#include "third_party/base/stl_util.h"
+
+CPDF_Stream::CPDF_Stream() {}
+
+CPDF_Stream::CPDF_Stream(uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict)
+ : m_pDict(pDict), m_dwSize(size), m_pDataBuf(pData) {}
+
+CPDF_Stream::~CPDF_Stream() {}
+
+CPDF_Object::Type CPDF_Stream::GetType() const {
+ return STREAM;
+}
+
+CPDF_Dictionary* CPDF_Stream::GetDict() const {
+ return m_pDict.get();
+}
+
+bool CPDF_Stream::IsStream() const {
+ return true;
+}
+
+CPDF_Stream* CPDF_Stream::AsStream() {
+ return this;
+}
+
+const CPDF_Stream* CPDF_Stream::AsStream() const {
+ return this;
+}
+
+void CPDF_Stream::InitStream(const uint8_t* pData,
+ uint32_t size,
+ CPDF_Dictionary* pDict) {
+ m_pDict.reset(pDict);
+ m_bMemoryBased = true;
+ m_pFile = nullptr;
+ m_pDataBuf.reset(FX_Alloc(uint8_t, size));
+ if (pData)
+ FXSYS_memcpy(m_pDataBuf.get(), pData, size);
+ m_dwSize = size;
+ if (m_pDict)
+ m_pDict->SetIntegerFor("Length", m_dwSize);
+}
+
+void CPDF_Stream::InitStreamFromFile(IFX_FileRead* pFile,
+ CPDF_Dictionary* pDict) {
+ m_pDict.reset(pDict);
+ m_bMemoryBased = false;
+ m_pDataBuf.reset();
+ m_pFile = pFile;
+ m_dwSize = pdfium::base::checked_cast<uint32_t>(pFile->GetSize());
+ if (m_pDict)
+ m_pDict->SetIntegerFor("Length", m_dwSize);
+}
+
+CPDF_Object* CPDF_Stream::Clone() const {
+ return CloneObjectNonCyclic(false);
+}
+
+CPDF_Object* CPDF_Stream::CloneNonCyclic(
+ bool bDirect,
+ std::set<const CPDF_Object*>* pVisited) const {
+ pVisited->insert(this);
+ CPDF_StreamAcc acc;
+ acc.LoadAllData(this, TRUE);
+ uint32_t streamSize = acc.GetSize();
+ CPDF_Dictionary* pDict = GetDict();
+ if (pDict && !pdfium::ContainsKey(*pVisited, pDict)) {
+ pDict = ToDictionary(
+ static_cast<CPDF_Object*>(pDict)->CloneNonCyclic(bDirect, pVisited));
+ }
+
+ return new CPDF_Stream(acc.DetachData(), streamSize, pDict);
+}
+
+void CPDF_Stream::SetData(const uint8_t* pData, uint32_t size) {
+ m_bMemoryBased = true;
+ m_pDataBuf.reset(FX_Alloc(uint8_t, size));
+ if (pData)
+ FXSYS_memcpy(m_pDataBuf.get(), pData, size);
+ m_dwSize = size;
+ if (!m_pDict)
+ m_pDict.reset(new CPDF_Dictionary());
+ m_pDict->SetIntegerFor("Length", size);
+ m_pDict->RemoveFor("Filter");
+ m_pDict->RemoveFor("DecodeParms");
+}
+
+FX_BOOL CPDF_Stream::ReadRawData(FX_FILESIZE offset,
+ uint8_t* buf,
+ uint32_t size) const {
+ if (m_bMemoryBased && m_pFile)
+ return m_pFile->ReadBlock(buf, offset, size);
+
+ if (m_pDataBuf)
+ FXSYS_memcpy(buf, m_pDataBuf.get() + offset, size);
+
+ return TRUE;
+}
+
+CFX_WideString CPDF_Stream::GetUnicodeText() const {
+ CPDF_StreamAcc stream;
+ stream.LoadAllData(this, FALSE);
+ return PDF_DecodeText(stream.GetData(), stream.GetSize());
+}