From 4412f3d87441c135ef56420f18d9229fbe247c3e Mon Sep 17 00:00:00 2001
From: Lei Zhang <thestig@chromium.org>
Date: Mon, 11 Dec 2017 22:10:29 +0000
Subject: Slightly simplify CPDF_StreamAcc::LoadAllData().

Also initialize members in the header.

Change-Id: Ic1cda7f9ef4c69e26604c706678aed24bf4e8ee3
Reviewed-on: https://pdfium-review.googlesource.com/20790
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
---
 core/fpdfapi/parser/cpdf_stream_acc.cpp | 18 +++++++-----------
 core/fpdfapi/parser/cpdf_stream_acc.h   | 10 +++++-----
 2 files changed, 12 insertions(+), 16 deletions(-)

diff --git a/core/fpdfapi/parser/cpdf_stream_acc.cpp b/core/fpdfapi/parser/cpdf_stream_acc.cpp
index b539117bd3..5792a80d14 100644
--- a/core/fpdfapi/parser/cpdf_stream_acc.cpp
+++ b/core/fpdfapi/parser/cpdf_stream_acc.cpp
@@ -9,12 +9,7 @@
 #include "core/fpdfapi/parser/fpdf_parser_decode.h"
 
 CPDF_StreamAcc::CPDF_StreamAcc(const CPDF_Stream* pStream)
-    : m_pData(nullptr),
-      m_dwSize(0),
-      m_bNewBuf(false),
-      m_pImageParam(nullptr),
-      m_pStream(pStream),
-      m_pSrcData(nullptr) {}
+    : m_pStream(pStream) {}
 
 CPDF_StreamAcc::~CPDF_StreamAcc() {
   if (m_bNewBuf)
@@ -28,7 +23,8 @@ void CPDF_StreamAcc::LoadAllData(bool bRawAccess,
   if (!m_pStream)
     return;
 
-  if (m_pStream->IsMemoryBased() && (!m_pStream->HasFilter() || bRawAccess)) {
+  bool bProcessRawData = bRawAccess || !m_pStream->HasFilter();
+  if (bProcessRawData && m_pStream->IsMemoryBased()) {
     m_dwSize = m_pStream->GetRawSize();
     m_pData = m_pStream->GetRawData();
     return;
@@ -38,14 +34,14 @@ void CPDF_StreamAcc::LoadAllData(bool bRawAccess,
     return;
 
   uint8_t* pSrcData;
-  if (!m_pStream->IsMemoryBased()) {
+  if (m_pStream->IsMemoryBased()) {
+    pSrcData = m_pStream->GetRawData();
+  } else {
     pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize);
     if (!m_pStream->ReadRawData(0, pSrcData, dwSrcSize))
       return;
-  } else {
-    pSrcData = m_pStream->GetRawData();
   }
-  if (!m_pStream->HasFilter() || bRawAccess) {
+  if (bProcessRawData) {
     m_pData = pSrcData;
     m_dwSize = dwSrcSize;
   } else if (!PDF_DataDecode(pSrcData, dwSrcSize, m_pStream->GetDict(),
diff --git a/core/fpdfapi/parser/cpdf_stream_acc.h b/core/fpdfapi/parser/cpdf_stream_acc.h
index 6a18c43975..52ac7e2e05 100644
--- a/core/fpdfapi/parser/cpdf_stream_acc.h
+++ b/core/fpdfapi/parser/cpdf_stream_acc.h
@@ -44,13 +44,13 @@ class CPDF_StreamAcc : public Retainable {
  private:
   uint8_t* GetDataHelper() const;
 
-  uint8_t* m_pData;
-  uint32_t m_dwSize;
-  bool m_bNewBuf;
+  uint8_t* m_pData = nullptr;
+  uint32_t m_dwSize = 0;
+  bool m_bNewBuf = false;
   ByteString m_ImageDecoder;
-  CPDF_Dictionary* m_pImageParam;
+  CPDF_Dictionary* m_pImageParam = nullptr;
   UnownedPtr<const CPDF_Stream> const m_pStream;
-  uint8_t* m_pSrcData;
+  uint8_t* m_pSrcData = nullptr;
 };
 
 #endif  // CORE_FPDFAPI_PARSER_CPDF_STREAM_ACC_H_
-- 
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