1 files changed, 0 insertions, 124 deletions
diff --git a/core/fxcrt/cfx_blockbuffer.cpp b/core/fxcrt/cfx_blockbuffer.cpp
deleted file mode 100644
index 6a7d98aa18..0000000000
--- a/core/fxcrt/cfx_blockbuffer.cpp
+++ /dev/null
@@ -1,124 +0,0 @@
-// 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
-
-#include "core/fxcrt/cfx_blockbuffer.h"
-
-#include <algorithm>
-#include <utility>
-
-namespace {
-
-const size_t kAllocStep = 1024 * 1024;
-
-}  // namespace
-
-CFX_BlockBuffer::CFX_BlockBuffer()
-    : m_DataLength(0), m_BufferSize(0), m_StartPosition(0) {}
-
-CFX_BlockBuffer::~CFX_BlockBuffer() {}
-
-size_t CFX_BlockBuffer::GetAllocStep() const {
-  return kAllocStep;
-}
-
-std::pair<wchar_t*, size_t> CFX_BlockBuffer::GetAvailableBlock() {
-  if (m_BlockArray.empty())
-    return {nullptr, 0};
-
-  size_t realIndex = m_StartPosition + m_DataLength;
-  if (realIndex == m_BufferSize) {
-    m_BlockArray.emplace_back(FX_Alloc(wchar_t, kAllocStep));
-    m_BufferSize += kAllocStep;
-    return {m_BlockArray.back().get(), 0};
-  }
-  return {m_BlockArray[realIndex / kAllocStep].get(), realIndex % kAllocStep};
-}
-
-bool CFX_BlockBuffer::InitBuffer() {
-  m_BlockArray.clear();
-  m_BlockArray.emplace_back(FX_Alloc(wchar_t, kAllocStep));
-  m_BufferSize = kAllocStep;
-  return true;
-}
-
-void CFX_BlockBuffer::SetTextChar(size_t index, wchar_t ch) {
-  size_t realIndex = m_StartPosition + index;
-  size_t blockIndex = realIndex / kAllocStep;
-  if (blockIndex >= m_BlockArray.size()) {
-    size_t newBlocks = blockIndex - m_BlockArray.size() + 1;
-    do {
-      m_BlockArray.emplace_back(FX_Alloc(wchar_t, kAllocStep));
-      m_BufferSize += kAllocStep;
-    } while (--newBlocks);
-  }
-  wchar_t* pTextData = m_BlockArray[blockIndex].get();
-  pTextData[realIndex % kAllocStep] = ch;
-  m_DataLength = std::max(m_DataLength, index + 1);
-}
-
-void CFX_BlockBuffer::DeleteTextChars(size_t count) {
-  if (count == 0)
-    return;
-
-  if (count >= m_DataLength) {
-    Reset(false);
-    return;
-  }
-  m_DataLength -= count;
-}
-
-WideString CFX_BlockBuffer::GetTextData(size_t start, size_t length) const {
-  if (m_BufferSize <= m_StartPosition + 1 || length == 0)
-    return WideString();
-
-  size_t maybeDataLength = m_BufferSize - 1 - m_StartPosition;
-  if (start > maybeDataLength)
-    return WideString();
-
-  length = std::min(length, maybeDataLength);
-  if (!length)
-    return WideString();
-
-  WideString wsTextData;
-  {
-    // Span's lifetime must end before ReleaseBuffer() below.
-    pdfium::span<wchar_t> pBuf = wsTextData.GetBuffer(length);
-    size_t startBlock = 0;
-    size_t startInner = 0;
-    std::tie(startBlock, startInner) = TextDataIndex2BufIndex(start);
-
-    size_t endBlock = 0;
-    size_t endInner = 0;
-    std::tie(endBlock, endInner) = TextDataIndex2BufIndex(start + length);
-
-    size_t pointer = 0;
-    for (size_t i = startBlock; i <= endBlock; ++i) {
-      size_t bufferPointer = 0;
-      size_t copyLength = kAllocStep;
-      if (i == startBlock) {
-        copyLength -= startInner;
-        bufferPointer = startInner;
-      }
-      if (i == endBlock)
-        copyLength -= ((kAllocStep - 1) - endInner);
-
-      wchar_t* pBlockBuf = m_BlockArray[i].get();
-      memcpy(&pBuf[pointer], pBlockBuf + bufferPointer,
-             copyLength * sizeof(wchar_t));
-      pointer += copyLength;
-    }
-  }
-  wsTextData.ReleaseBuffer(length);
-  return wsTextData;
-}
-
-std::pair<size_t, size_t> CFX_BlockBuffer::TextDataIndex2BufIndex(
-    const size_t iIndex) const {
-  ASSERT(iIndex >= 0);
-
-  size_t realIndex = m_StartPosition + iIndex;
-  return {realIndex / kAllocStep, realIndex % kAllocStep};
-}