Move CFX files into fxcrt

This Cl moves more of the CFX classes defined in the xfa/ directory to
the core/fxcrt directory and conditionally builds them.

Change-Id: I811e6c6acd31dfbe75b49880be43661f78334013
Reviewed-on: https://pdfium-review.googlesource.com/3372
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

2 files changed, 0 insertions, 878 deletions

diff --git a/xfa/fde/xml/cfx_saxreader.cpp b/xfa/fde/xml/cfx_saxreader.cpp
deleted file mode 100644
index 50f65731f7..0000000000
--- a/xfa/fde/xml/cfx_saxreader.cpp
+++ /dev/null
@@ -1,734 +0,0 @@
-// Copyright 2014 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 "xfa/fde/xml/cfx_saxreader.h"
-
-#include <algorithm>
-#include <utility>
-
-#include "third_party/base/ptr_util.h"
-#include "third_party/base/stl_util.h"
-#include "xfa/fxfa/cxfa_saxreaderhandler.h"
-
-enum class CFX_SaxMode {
-  Text = 0,
-  NodeStart,
-  DeclOrComment,
-  DeclNode,
-  Comment,
-  CommentContent,
-  TagName,
-  TagAttributeName,
-  TagAttributeEqual,
-  TagAttributeValue,
-  TagMaybeClose,
-  TagClose,
-  TagEnd,
-  TargetData,
-  MAX
-};
-
-class CFX_SAXCommentContext {
- public:
-  CFX_SAXCommentContext() : m_iHeaderCount(0), m_iTailCount(0) {}
-  int32_t m_iHeaderCount;
-  int32_t m_iTailCount;
-};
-
-namespace {
-
-const uint32_t kSaxFileBufSize = 32768;
-
-typedef void (CFX_SAXReader::*FX_SAXReader_LPFParse)();
-static const FX_SAXReader_LPFParse
-    g_FX_SAXReader_LPFParse[static_cast<int>(CFX_SaxMode::MAX)] = {
-        &CFX_SAXReader::ParseText,
-        &CFX_SAXReader::ParseNodeStart,
-        &CFX_SAXReader::ParseDeclOrComment,
-        &CFX_SAXReader::ParseDeclNode,
-        &CFX_SAXReader::ParseComment,
-        &CFX_SAXReader::ParseCommentContent,
-        &CFX_SAXReader::ParseTagName,
-        &CFX_SAXReader::ParseTagAttributeName,
-        &CFX_SAXReader::ParseTagAttributeEqual,
-        &CFX_SAXReader::ParseTagAttributeValue,
-        &CFX_SAXReader::ParseMaybeClose,
-        &CFX_SAXReader::ParseTagClose,
-        &CFX_SAXReader::ParseTagEnd,
-        &CFX_SAXReader::ParseTargetData,
-};
-
-}  // namespace
-
-CFX_SAXFile::CFX_SAXFile()
-    : m_dwStart(0),
-      m_dwEnd(0),
-      m_dwCur(0),
-      m_pBuf(nullptr),
-      m_dwBufSize(0),
-      m_dwBufIndex(0) {}
-
-CFX_SAXFile::~CFX_SAXFile() {}
-
-bool CFX_SAXFile::StartFile(const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
-                            uint32_t dwStart,
-                            uint32_t dwLen) {
-  ASSERT(!m_pFile && pFile);
-  uint32_t dwSize = pFile->GetSize();
-  if (dwStart >= dwSize)
-    return false;
-
-  if (dwLen == static_cast<uint32_t>(-1) || dwStart + dwLen > dwSize)
-    dwLen = dwSize - dwStart;
-
-  if (dwLen == 0)
-    return false;
-
-  m_dwBufSize = std::min(dwLen, kSaxFileBufSize);
-  m_pBuf = FX_Alloc(uint8_t, m_dwBufSize);
-  if (!pFile->ReadBlock(m_pBuf, dwStart, m_dwBufSize))
-    return false;
-
-  m_dwStart = dwStart;
-  m_dwEnd = dwStart + dwLen;
-  m_dwCur = dwStart;
-  m_pFile = pFile;
-  m_dwBufIndex = 0;
-  return true;
-}
-
-bool CFX_SAXFile::ReadNextBlock() {
-  ASSERT(m_pFile);
-  uint32_t dwSize = m_dwEnd - m_dwCur;
-  if (dwSize == 0) {
-    return false;
-  }
-  m_dwBufSize = std::min(dwSize, kSaxFileBufSize);
-  if (!m_pFile->ReadBlock(m_pBuf, m_dwCur, m_dwBufSize)) {
-    return false;
-  }
-  m_dwBufIndex = 0;
-  return true;
-}
-
-void CFX_SAXFile::Reset() {
-  if (m_pBuf) {
-    FX_Free(m_pBuf);
-    m_pBuf = nullptr;
-  }
-  m_pFile = nullptr;
-}
-
-CFX_SAXReader::CFX_SAXReader()
-    : m_File(),
-      m_pHandler(nullptr),
-      m_iState(-1),
-      m_dwItemID(0),
-      m_iDataSize(256),
-      m_iNameSize(256),
-      m_dwParseMode(0),
-      m_pCommentContext(nullptr) {
-  m_pszData = FX_Alloc(uint8_t, m_iDataSize);
-  m_pszName = FX_Alloc(uint8_t, m_iNameSize);
-}
-CFX_SAXReader::~CFX_SAXReader() {
-  Reset();
-  if (m_pszData) {
-    FX_Free(m_pszData);
-    m_pszData = nullptr;
-  }
-  if (m_pszName) {
-    FX_Free(m_pszName);
-    m_pszName = nullptr;
-  }
-}
-
-void CFX_SAXReader::Reset() {
-  m_File.Reset();
-  m_Stack = std::stack<std::unique_ptr<CFX_SAXItem>>();
-  m_dwItemID = 0;
-  m_SkipStack = std::stack<char>();
-  m_SkipChar = 0;
-  m_iDataLength = 0;
-  m_iEntityStart = -1;
-  m_iNameLength = 0;
-  m_iDataPos = 0;
-  m_pCommentContext.reset();
-}
-
-void CFX_SAXReader::Push() {
-  std::unique_ptr<CFX_SAXItem> pNew =
-      pdfium::MakeUnique<CFX_SAXItem>(++m_dwItemID);
-  if (!m_Stack.empty())
-    pNew->m_bSkip = m_Stack.top()->m_bSkip;
-  m_Stack.push(std::move(pNew));
-}
-
-void CFX_SAXReader::Pop() {
-  if (!m_Stack.empty())
-    m_Stack.pop();
-}
-
-CFX_SAXItem* CFX_SAXReader::GetCurrentItem() const {
-  return m_Stack.empty() ? nullptr : m_Stack.top().get();
-}
-
-void CFX_SAXReader::AppendData(uint8_t ch) {
-  ReallocDataBuffer();
-  m_pszData[m_iDataPos++] = ch;
-}
-
-void CFX_SAXReader::AppendName(uint8_t ch) {
-  ReallocNameBuffer();
-  m_pszName[m_iDataPos++] = ch;
-}
-
-void CFX_SAXReader::ReallocDataBuffer() {
-  if (m_iDataPos < m_iDataSize) {
-    return;
-  }
-  if (m_iDataSize <= 1024 * 1024) {
-    m_iDataSize *= 2;
-  } else {
-    m_iDataSize += 1024 * 1024;
-  }
-  m_pszData = (uint8_t*)FX_Realloc(uint8_t, m_pszData, m_iDataSize);
-}
-
-void CFX_SAXReader::ReallocNameBuffer() {
-  if (m_iDataPos < m_iNameSize) {
-    return;
-  }
-  if (m_iNameSize <= 1024 * 1024) {
-    m_iNameSize *= 2;
-  } else {
-    m_iNameSize += 1024 * 1024;
-  }
-  m_pszName = (uint8_t*)FX_Realloc(uint8_t, m_pszName, m_iNameSize);
-}
-
-bool CFX_SAXReader::SkipSpace(uint8_t ch) {
-  return (m_dwParseMode & CFX_SaxParseMode_NotSkipSpace) == 0 && ch < 0x21;
-}
-
-int32_t CFX_SAXReader::StartParse(
-    const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
-    uint32_t dwStart,
-    uint32_t dwLen,
-    uint32_t dwParseMode) {
-  m_iState = -1;
-  Reset();
-  if (!m_File.StartFile(pFile, dwStart, dwLen))
-    return -1;
-
-  m_iState = 0;
-  m_eMode = CFX_SaxMode::Text;
-  m_ePrevMode = CFX_SaxMode::Text;
-  m_bCharData = false;
-  m_dwDataOffset = 0;
-  m_dwParseMode = dwParseMode;
-  m_Stack.emplace(new CFX_SAXItem(++m_dwItemID));
-  return 0;
-}
-
-int32_t CFX_SAXReader::ContinueParse(IFX_Pause* pPause) {
-  if (m_iState < 0 || m_iState > 99) {
-    return m_iState;
-  }
-  while (m_File.m_dwCur < m_File.m_dwEnd) {
-    uint32_t& index = m_File.m_dwBufIndex;
-    uint32_t size = m_File.m_dwBufSize;
-    const uint8_t* pBuf = m_File.m_pBuf;
-    while (index < size) {
-      m_CurByte = pBuf[index];
-      (this->*g_FX_SAXReader_LPFParse[static_cast<int>(m_eMode)])();
-      index++;
-    }
-    m_File.m_dwCur += index;
-    m_iState = (m_File.m_dwCur - m_File.m_dwStart) * 100 /
-               (m_File.m_dwEnd - m_File.m_dwStart);
-    if (m_File.m_dwCur >= m_File.m_dwEnd) {
-      break;
-    }
-    if (!m_File.ReadNextBlock()) {
-      m_iState = -2;
-      break;
-    }
-    m_dwDataOffset = 0;
-    if (pPause && pPause->NeedToPauseNow()) {
-      break;
-    }
-  }
-  return m_iState;
-}
-void CFX_SAXReader::ParseChar(uint8_t ch) {
-  ReallocDataBuffer();
-  m_pszData[m_iDataPos] = ch;
-  if (m_iEntityStart > -1 && ch == ';') {
-    int32_t iSaveEntityStart = m_iEntityStart;
-    CFX_ByteString csEntity(m_pszData + m_iEntityStart + 1,
-                            m_iDataPos - m_iEntityStart - 1);
-    int32_t iLen = csEntity.GetLength();
-    if (iLen > 0) {
-      if (csEntity[0] == '#') {
-        if ((m_dwParseMode & CFX_SaxParseMode_NotConvert_sharp) == 0) {
-          ch = 0;
-          uint8_t w;
-          if (iLen > 1 && csEntity[1] == 'x') {
-            for (int32_t i = 2; i < iLen; i++) {
-              w = csEntity[i];
-              if (w >= '0' && w <= '9') {
-                ch = (ch << 4) + w - '0';
-              } else if (w >= 'A' && w <= 'F') {
-                ch = (ch << 4) + w - 55;
-              } else if (w >= 'a' && w <= 'f') {
-                ch = (ch << 4) + w - 87;
-              } else {
-                break;
-              }
-            }
-          } else {
-            for (int32_t i = 1; i < iLen; i++) {
-              w = csEntity[i];
-              if (w < '0' || w > '9') {
-                break;
-              }
-              ch = ch * 10 + w - '0';
-            }
-          }
-          if (ch != 0) {
-            m_pszData[m_iEntityStart++] = ch;
-          }
-        }
-      } else {
-        if (csEntity.Compare("amp") == 0) {
-          if ((m_dwParseMode & CFX_SaxParseMode_NotConvert_amp) == 0) {
-            m_pszData[m_iEntityStart++] = '&';
-          }
-        } else if (csEntity.Compare("lt") == 0) {
-          if ((m_dwParseMode & CFX_SaxParseMode_NotConvert_lt) == 0) {
-            m_pszData[m_iEntityStart++] = '<';
-          }
-        } else if (csEntity.Compare("gt") == 0) {
-          if ((m_dwParseMode & CFX_SaxParseMode_NotConvert_gt) == 0) {
-            m_pszData[m_iEntityStart++] = '>';
-          }
-        } else if (csEntity.Compare("apos") == 0) {
-          if ((m_dwParseMode & CFX_SaxParseMode_NotConvert_apos) == 0) {
-            m_pszData[m_iEntityStart++] = '\'';
-          }
-        } else if (csEntity.Compare("quot") == 0) {
-          if ((m_dwParseMode & CFX_SaxParseMode_NotConvert_quot) == 0) {
-            m_pszData[m_iEntityStart++] = '\"';
-          }
-        }
-      }
-    }
-    if (iSaveEntityStart != m_iEntityStart) {
-      m_iDataPos = m_iEntityStart;
-      m_iEntityStart = -1;
-    } else {
-      m_iDataPos++;
-      m_iEntityStart = -1;
-    }
-  } else {
-    if (m_iEntityStart < 0 && ch == '&') {
-      m_iEntityStart = m_iDataPos;
-    }
-    m_iDataPos++;
-  }
-}
-
-void CFX_SAXReader::ParseText() {
-  if (m_CurByte == '<') {
-    if (m_iDataPos > 0) {
-      m_iDataLength = m_iDataPos;
-      m_iDataPos = 0;
-      if (m_pHandler) {
-        NotifyData();
-      }
-    }
-    Push();
-    m_dwNodePos = m_File.m_dwCur + m_File.m_dwBufIndex;
-    m_eMode = CFX_SaxMode::NodeStart;
-    return;
-  }
-  if (m_iDataPos < 1 && SkipSpace(m_CurByte)) {
-    return;
-  }
-  ParseChar(m_CurByte);
-}
-
-void CFX_SAXReader::ParseNodeStart() {
-  if (m_CurByte == '?') {
-    GetCurrentItem()->m_eNode = CFX_SAXItem::Type::Instruction;
-    m_eMode = CFX_SaxMode::TagName;
-    return;
-  }
-  if (m_CurByte == '!') {
-    m_eMode = CFX_SaxMode::DeclOrComment;
-    return;
-  }
-  if (m_CurByte == '/') {
-    m_eMode = CFX_SaxMode::TagEnd;
-    return;
-  }
-  if (m_CurByte == '>') {
-    Pop();
-    m_eMode = CFX_SaxMode::Text;
-    return;
-  }
-  if (m_CurByte > 0x20) {
-    m_dwDataOffset = m_File.m_dwBufIndex;
-    GetCurrentItem()->m_eNode = CFX_SAXItem::Type::Tag;
-    m_eMode = CFX_SaxMode::TagName;
-    AppendData(m_CurByte);
-  }
-}
-
-void CFX_SAXReader::ParseDeclOrComment() {
-  if (m_CurByte == '-') {
-    m_eMode = CFX_SaxMode::Comment;
-    GetCurrentItem()->m_eNode = CFX_SAXItem::Type::Comment;
-    if (!m_pCommentContext)
-      m_pCommentContext = pdfium::MakeUnique<CFX_SAXCommentContext>();
-    m_pCommentContext->m_iHeaderCount = 1;
-    m_pCommentContext->m_iTailCount = 0;
-    return;
-  }
-  m_eMode = CFX_SaxMode::DeclNode;
-  m_dwDataOffset = m_File.m_dwBufIndex;
-  m_SkipChar = '>';
-  m_SkipStack.push('>');
-  SkipNode();
-}
-
-void CFX_SAXReader::ParseComment() {
-  m_pCommentContext->m_iHeaderCount = 2;
-  m_dwNodePos = m_File.m_dwCur + m_File.m_dwBufIndex;
-  m_eMode = CFX_SaxMode::CommentContent;
-}
-
-void CFX_SAXReader::ParseCommentContent() {
-  if (m_CurByte == '-') {
-    m_pCommentContext->m_iTailCount++;
-  } else if (m_CurByte == '>' && m_pCommentContext->m_iTailCount == 2) {
-    m_iDataLength = m_iDataPos;
-    m_iDataPos = 0;
-    if (m_pHandler) {
-      NotifyTargetData();
-    }
-    Pop();
-    m_eMode = CFX_SaxMode::Text;
-  } else {
-    while (m_pCommentContext->m_iTailCount > 0) {
-      AppendData('-');
-      m_pCommentContext->m_iTailCount--;
-    }
-    AppendData(m_CurByte);
-  }
-}
-void CFX_SAXReader::ParseDeclNode() {
-  SkipNode();
-}
-void CFX_SAXReader::ParseTagName() {
-  if (m_CurByte < 0x21 || m_CurByte == '/' || m_CurByte == '>' ||
-      m_CurByte == '?') {
-    m_iDataLength = m_iDataPos;
-    m_iDataPos = 0;
-    if (m_pHandler) {
-      NotifyEnter();
-    }
-    if (m_CurByte < 0x21) {
-      m_eMode = CFX_SaxMode::TagAttributeName;
-    } else if (m_CurByte == '/' || m_CurByte == '?') {
-      m_ePrevMode = m_eMode;
-      m_eMode = CFX_SaxMode::TagMaybeClose;
-    } else {
-      if (m_pHandler) {
-        NotifyBreak();
-      }
-      m_eMode = CFX_SaxMode::Text;
-    }
-  } else {
-    AppendData(m_CurByte);
-  }
-}
-void CFX_SAXReader::ParseTagAttributeName() {
-  if (m_CurByte < 0x21 || m_CurByte == '=') {
-    if (m_iDataPos < 1 && m_CurByte < 0x21) {
-      return;
-    }
-    m_iNameLength = m_iDataPos;
-    m_iDataPos = 0;
-    m_SkipChar = 0;
-    m_eMode = m_CurByte == '=' ? CFX_SaxMode::TagAttributeValue
-                               : CFX_SaxMode::TagAttributeEqual;
-    return;
-  }
-  if (m_CurByte == '/' || m_CurByte == '>' || m_CurByte == '?') {
-    if (m_CurByte == '/' || m_CurByte == '?') {
-      m_ePrevMode = m_eMode;
-      m_eMode = CFX_SaxMode::TagMaybeClose;
-    } else {
-      if (m_pHandler) {
-        NotifyBreak();
-      }
-      m_eMode = CFX_SaxMode::Text;
-    }
-    return;
-  }
-  if (m_iDataPos < 1) {
-    m_dwDataOffset = m_File.m_dwBufIndex;
-  }
-  AppendName(m_CurByte);
-}
-
-void CFX_SAXReader::ParseTagAttributeEqual() {
-  if (m_CurByte == '=') {
-    m_SkipChar = 0;
-    m_eMode = CFX_SaxMode::TagAttributeValue;
-    return;
-  }
-  if (GetCurrentItem()->m_eNode == CFX_SAXItem::Type::Instruction) {
-    m_iDataPos = m_iNameLength;
-    AppendName(0x20);
-    m_eMode = CFX_SaxMode::TargetData;
-    ParseTargetData();
-  }
-}
-
-void CFX_SAXReader::ParseTagAttributeValue() {
-  if (m_SkipChar) {
-    if (m_SkipChar == m_CurByte) {
-      {
-        m_iDataLength = m_iDataPos;
-        m_iDataPos = 0;
-        if (m_pHandler) {
-          NotifyAttribute();
-        }
-      }
-      m_SkipChar = 0;
-      m_eMode = CFX_SaxMode::TagAttributeName;
-      return;
-    }
-    ParseChar(m_CurByte);
-    return;
-  }
-  if (m_CurByte < 0x21) {
-    return;
-  }
-  if (m_iDataPos < 1) {
-    if (m_CurByte == '\'' || m_CurByte == '\"') {
-      m_SkipChar = m_CurByte;
-    }
-  }
-}
-
-void CFX_SAXReader::ParseMaybeClose() {
-  if (m_CurByte == '>') {
-    if (GetCurrentItem()->m_eNode == CFX_SAXItem::Type::Instruction) {
-      m_iNameLength = m_iDataPos;
-      m_iDataPos = 0;
-      if (m_pHandler) {
-        NotifyTargetData();
-      }
-    }
-    ParseTagClose();
-    m_eMode = CFX_SaxMode::Text;
-  } else if (m_ePrevMode == CFX_SaxMode::TagName) {
-    AppendData('/');
-    m_eMode = CFX_SaxMode::TagName;
-    m_ePrevMode = CFX_SaxMode::Text;
-    ParseTagName();
-  } else if (m_ePrevMode == CFX_SaxMode::TagAttributeName) {
-    AppendName('/');
-    m_eMode = CFX_SaxMode::TagAttributeName;
-    m_ePrevMode = CFX_SaxMode::Text;
-    ParseTagAttributeName();
-  } else if (m_ePrevMode == CFX_SaxMode::TargetData) {
-    AppendName('?');
-    m_eMode = CFX_SaxMode::TargetData;
-    m_ePrevMode = CFX_SaxMode::Text;
-    ParseTargetData();
-  }
-}
-void CFX_SAXReader::ParseTagClose() {
-  m_dwNodePos = m_File.m_dwCur + m_File.m_dwBufIndex;
-  if (m_pHandler) {
-    NotifyClose();
-  }
-  Pop();
-}
-void CFX_SAXReader::ParseTagEnd() {
-  if (m_CurByte < 0x21) {
-    return;
-  }
-  if (m_CurByte == '>') {
-    Pop();
-    m_dwNodePos = m_File.m_dwCur + m_File.m_dwBufIndex;
-    m_iDataLength = m_iDataPos;
-    m_iDataPos = 0;
-    if (m_pHandler) {
-      NotifyEnd();
-    }
-    Pop();
-    m_eMode = CFX_SaxMode::Text;
-  } else {
-    ParseChar(m_CurByte);
-  }
-}
-void CFX_SAXReader::ParseTargetData() {
-  if (m_CurByte == '?') {
-    m_ePrevMode = m_eMode;
-    m_eMode = CFX_SaxMode::TagMaybeClose;
-  } else {
-    AppendName(m_CurByte);
-  }
-}
-void CFX_SAXReader::SkipNode() {
-  if (m_SkipChar == '\'' || m_SkipChar == '\"') {
-    if (m_CurByte != m_SkipChar)
-      return;
-
-    ASSERT(!m_SkipStack.empty());
-    m_SkipStack.pop();
-    m_SkipChar = !m_SkipStack.empty() ? m_SkipStack.top() : 0;
-    return;
-  }
-  switch (m_CurByte) {
-    case '<':
-      m_SkipChar = '>';
-      m_SkipStack.push('>');
-      break;
-    case '[':
-      m_SkipChar = ']';
-      m_SkipStack.push(']');
-      break;
-    case '(':
-      m_SkipChar = ')';
-      m_SkipStack.push(')');
-      break;
-    case '\'':
-      m_SkipChar = '\'';
-      m_SkipStack.push('\'');
-      break;
-    case '\"':
-      m_SkipChar = '\"';
-      m_SkipStack.push('\"');
-      break;
-    default:
-      if (m_CurByte == m_SkipChar) {
-        m_SkipStack.pop();
-        m_SkipChar = !m_SkipStack.empty() ? m_SkipStack.top() : 0;
-        if (m_SkipStack.empty() && m_CurByte == '>') {
-          m_iDataLength = m_iDataPos;
-          m_iDataPos = 0;
-          if (m_iDataLength >= 9 &&
-              FXSYS_memcmp(m_pszData, "[CDATA[", 7 * sizeof(uint8_t)) == 0 &&
-              FXSYS_memcmp(m_pszData + m_iDataLength - 2, "]]",
-                           2 * sizeof(uint8_t)) == 0) {
-            Pop();
-            m_iDataLength -= 9;
-            m_dwDataOffset += 7;
-            FXSYS_memmove(m_pszData, m_pszData + 7,
-                          m_iDataLength * sizeof(uint8_t));
-            m_bCharData = true;
-            if (m_pHandler) {
-              NotifyData();
-            }
-            m_bCharData = false;
-          } else {
-            Pop();
-          }
-          m_eMode = CFX_SaxMode::Text;
-        }
-      }
-      break;
-  }
-  if (!m_SkipStack.empty())
-    ParseChar(m_CurByte);
-}
-
-void CFX_SAXReader::NotifyData() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (!pItem)
-    return;
-
-  if (pItem->m_eNode == CFX_SAXItem::Type::Tag)
-    m_pHandler->OnTagData(
-        pItem->m_pNode,
-        m_bCharData ? CFX_SAXItem::Type::CharData : CFX_SAXItem::Type::Text,
-        CFX_ByteStringC(m_pszData, m_iDataLength),
-        m_File.m_dwCur + m_dwDataOffset);
-}
-
-void CFX_SAXReader::NotifyEnter() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (pItem->m_eNode == CFX_SAXItem::Type::Tag ||
-      pItem->m_eNode == CFX_SAXItem::Type::Instruction) {
-    pItem->m_pNode = m_pHandler->OnTagEnter(
-        CFX_ByteStringC(m_pszData, m_iDataLength), pItem->m_eNode, m_dwNodePos);
-  }
-}
-
-void CFX_SAXReader::NotifyAttribute() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (pItem->m_eNode == CFX_SAXItem::Type::Tag ||
-      pItem->m_eNode == CFX_SAXItem::Type::Instruction) {
-    m_pHandler->OnTagAttribute(pItem->m_pNode,
-                               CFX_ByteStringC(m_pszName, m_iNameLength),
-                               CFX_ByteStringC(m_pszData, m_iDataLength));
-  }
-}
-
-void CFX_SAXReader::NotifyBreak() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (pItem->m_eNode == CFX_SAXItem::Type::Tag)
-    m_pHandler->OnTagBreak(pItem->m_pNode);
-}
-
-void CFX_SAXReader::NotifyClose() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (pItem->m_eNode == CFX_SAXItem::Type::Tag ||
-      pItem->m_eNode == CFX_SAXItem::Type::Instruction) {
-    m_pHandler->OnTagClose(pItem->m_pNode, m_dwNodePos);
-  }
-}
-
-void CFX_SAXReader::NotifyEnd() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (!pItem || pItem->m_eNode != CFX_SAXItem::Type::Tag)
-    return;
-
-  m_pHandler->OnTagEnd(pItem->m_pNode,
-                       CFX_ByteStringC(m_pszData, m_iDataLength), m_dwNodePos);
-}
-
-void CFX_SAXReader::NotifyTargetData() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (pItem->m_eNode == CFX_SAXItem::Type::Instruction) {
-    m_pHandler->OnTargetData(pItem->m_pNode, pItem->m_eNode,
-                             CFX_ByteStringC(m_pszName, m_iNameLength),
-                             m_dwNodePos);
-  } else if (pItem->m_eNode == CFX_SAXItem::Type::Comment) {
-    m_pHandler->OnTargetData(pItem->m_pNode, pItem->m_eNode,
-                             CFX_ByteStringC(m_pszData, m_iDataLength),
-                             m_dwNodePos);
-  }
-}
-
-void CFX_SAXReader::SkipCurrentNode() {
-  CFX_SAXItem* pItem = GetCurrentItem();
-  if (!pItem)
-    return;
-
-  pItem->m_bSkip = true;
-}
-
-void CFX_SAXReader::SetHandler(CXFA_SAXReaderHandler* pHandler) {
-  m_pHandler = pHandler;
-}
diff --git a/xfa/fde/xml/cfx_saxreader.h b/xfa/fde/xml/cfx_saxreader.h
deleted file mode 100644
index a5973c699e..0000000000
--- a/xfa/fde/xml/cfx_saxreader.h
+++ /dev/null
@@ -1,144 +0,0 @@
-// Copyright 2014 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 XFA_FDE_XML_CFX_SAXREADER_H_
-#define XFA_FDE_XML_CFX_SAXREADER_H_
-
-#include <memory>
-#include <stack>
-
-#include "core/fxcrt/fx_basic.h"
-
-class CFX_SAXCommentContext;
-class CXFA_SAXContext;
-class CXFA_SAXReaderHandler;
-enum class CFX_SaxMode;
-
-class CFX_SAXItem {
- public:
-  enum class Type {
-    Unknown = 0,
-    Instruction,
-    Declaration,
-    Comment,
-    Tag,
-    Text,
-    CharData,
-  };
-
-  explicit CFX_SAXItem(uint32_t id)
-      : m_pNode(nullptr), m_eNode(Type::Unknown), m_dwID(id), m_bSkip(false) {}
-
-  CXFA_SAXContext* m_pNode;
-  Type m_eNode;
-  const uint32_t m_dwID;
-  bool m_bSkip;
-};
-
-class CFX_SAXFile {
- public:
-  CFX_SAXFile();
-  ~CFX_SAXFile();
-
-  bool StartFile(const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
-                 uint32_t dwStart,
-                 uint32_t dwLen);
-  bool ReadNextBlock();
-  void Reset();
-
-  CFX_RetainPtr<IFX_SeekableReadStream> m_pFile;
-  uint32_t m_dwStart;
-  uint32_t m_dwEnd;
-  uint32_t m_dwCur;
-  uint8_t* m_pBuf;
-  uint32_t m_dwBufSize;
-  uint32_t m_dwBufIndex;
-};
-
-enum CFX_SaxParseMode {
-  CFX_SaxParseMode_NotConvert_amp = 1 << 0,
-  CFX_SaxParseMode_NotConvert_lt = 1 << 1,
-  CFX_SaxParseMode_NotConvert_gt = 1 << 2,
-  CFX_SaxParseMode_NotConvert_apos = 1 << 3,
-  CFX_SaxParseMode_NotConvert_quot = 1 << 4,
-  CFX_SaxParseMode_NotConvert_sharp = 1 << 5,
-  CFX_SaxParseMode_NotSkipSpace = 1 << 6
-};
-
-class CFX_SAXReader {
- public:
-  CFX_SAXReader();
-  ~CFX_SAXReader();
-
-  int32_t StartParse(const CFX_RetainPtr<IFX_SeekableReadStream>& pFile,
-                     uint32_t dwStart = 0,
-                     uint32_t dwLen = -1,
-                     uint32_t dwParseMode = 0);
-  int32_t ContinueParse(IFX_Pause* pPause = nullptr);
-  void SkipCurrentNode();
-  void SetHandler(CXFA_SAXReaderHandler* pHandler);
-  void AppendData(uint8_t ch);
-  void AppendName(uint8_t ch);
-  void ParseText();
-  void ParseNodeStart();
-  void ParseInstruction();
-  void ParseDeclOrComment();
-  void ParseDeclNode();
-  void ParseComment();
-  void ParseCommentContent();
-  void ParseTagName();
-  void ParseTagAttributeName();
-  void ParseTagAttributeEqual();
-  void ParseTagAttributeValue();
-  void ParseMaybeClose();
-  void ParseTagClose();
-  void ParseTagEnd();
-  void ParseTargetData();
-
- private:
-  void Reset();
-  void Push();
-  void Pop();
-  CFX_SAXItem* GetCurrentItem() const;
-  bool SkipSpace(uint8_t ch);
-  void SkipNode();
-  void NotifyData();
-  void NotifyEnter();
-  void NotifyAttribute();
-  void NotifyBreak();
-  void NotifyClose();
-  void NotifyEnd();
-  void NotifyTargetData();
-  void ReallocDataBuffer();
-  void ReallocNameBuffer();
-  void ParseChar(uint8_t ch);
-
-  CFX_SAXFile m_File;
-  CXFA_SAXReaderHandler* m_pHandler;
-  int32_t m_iState;
-  std::stack<std::unique_ptr<CFX_SAXItem>> m_Stack;
-  uint32_t m_dwItemID;
-  CFX_SaxMode m_eMode;
-  CFX_SaxMode m_ePrevMode;
-  bool m_bCharData;
-  uint8_t m_CurByte;
-  uint32_t m_dwDataOffset;
-  std::stack<char> m_SkipStack;
-  uint8_t m_SkipChar;
-  uint32_t m_dwNodePos;
-  uint8_t* m_pszData;
-  int32_t m_iDataSize;
-  int32_t m_iDataLength;
-  int32_t m_iEntityStart;
-  int32_t m_iDataPos;
-  uint8_t* m_pszName;
-  int32_t m_iNameSize;
-  int32_t m_iNameLength;
-  uint32_t m_dwParseMode;
-  std::unique_ptr<CFX_SAXCommentContext> m_pCommentContext;
-};
-
-#endif  // XFA_FDE_XML_CFX_SAXREADER_H_