Cleanup XML buffer code

This CL removes the CXML_DataStmAcc class which was unused and moves the
CXML_DataBufAcc to a separate file. This removes the use of the
IFX_BufferedReadStream as the parent class and removes default
implemented methods.

Change-Id: I5a3921d5a6f882d54cc1c74305f1a777aa4cebfc
Reviewed-on: https://pdfium-review.googlesource.com/4292
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/core/fxcrt/xml/cxml_databufacc.h b/core/fxcrt/xml/cxml_databufacc.h
new file mode 100644
index 0000000000..4fb44b302c
--- /dev/null
+++ b/core/fxcrt/xml/cxml_databufacc.h
@@ -0,0 +1,31 @@
+// Copyright 2017 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
+
+#ifndef CORE_FXCRT_XML_CXML_DATABUFACC_H_
+#define CORE_FXCRT_XML_CXML_DATABUFACC_H_
+
+#include "core/fxcrt/fx_system.h"
+
+class CXML_DataBufAcc {
+ public:
+  CXML_DataBufAcc(const uint8_t* pBuffer, size_t size);
+  ~CXML_DataBufAcc();
+
+  bool IsEOF() const { return m_dwCurPos >= m_dwSize; }
+  FX_FILESIZE GetPosition() const {
+    return static_cast<FX_FILESIZE>(m_dwCurPos);
+  }
+  bool ReadNextBlock();
+  const uint8_t* GetBlockBuffer() const { return m_pBuffer; }
+  size_t GetBlockSize() const { return m_dwSize; }
+
+ private:
+  const uint8_t* m_pBuffer;
+  size_t m_dwSize;
+  size_t m_dwCurPos;
+};
+
+#endif  // CORE_FXCRT_XML_CXML_DATABUFACC_H_