Move fde XML parser to core

This CL moves the XML parser from FDE into FXCRT and renames to CFX_
from CFDE_.

Change-Id: I21a9590bf74daf5517df630d7e7a5de89da99ea4
Reviewed-on: https://pdfium-review.googlesource.com/4312
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>

1 files changed, 0 insertions, 698 deletions

diff --git a/xfa/fde/xml/cfde_xmlsyntaxparser.cpp b/xfa/fde/xml/cfde_xmlsyntaxparser.cpp
deleted file mode 100644
index 5d671bb39a..0000000000
--- a/xfa/fde/xml/cfde_xmlsyntaxparser.cpp
+++ /dev/null
@@ -1,698 +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 "xfa/fde/xml/cfde_xmlsyntaxparser.h"
-
-#include <algorithm>
-
-#include "core/fxcrt/fx_ext.h"
-#include "core/fxcrt/fx_safe_types.h"
-
-namespace {
-
-const uint32_t kMaxCharRange = 0x10ffff;
-
-bool IsXMLWhiteSpace(wchar_t ch) {
-  return ch == L' ' || ch == 0x0A || ch == 0x0D || ch == 0x09;
-}
-
-struct FDE_XMLNAMECHAR {
-  uint16_t wStart;
-  uint16_t wEnd;
-  bool bStartChar;
-};
-
-const FDE_XMLNAMECHAR g_XMLNameChars[] = {
-    {L'-', L'.', false},    {L'0', L'9', false},     {L':', L':', false},
-    {L'A', L'Z', true},     {L'_', L'_', true},      {L'a', L'z', true},
-    {0xB7, 0xB7, false},    {0xC0, 0xD6, true},      {0xD8, 0xF6, true},
-    {0xF8, 0x02FF, true},   {0x0300, 0x036F, false}, {0x0370, 0x037D, true},
-    {0x037F, 0x1FFF, true}, {0x200C, 0x200D, true},  {0x203F, 0x2040, false},
-    {0x2070, 0x218F, true}, {0x2C00, 0x2FEF, true},  {0x3001, 0xD7FF, true},
-    {0xF900, 0xFDCF, true}, {0xFDF0, 0xFFFD, true},
-};
-
-bool IsXMLNameChar(wchar_t ch, bool bFirstChar) {
-  int32_t iStart = 0;
-  int32_t iEnd = FX_ArraySize(g_XMLNameChars) - 1;
-  while (iStart <= iEnd) {
-    int32_t iMid = (iStart + iEnd) / 2;
-    if (ch < g_XMLNameChars[iMid].wStart) {
-      iEnd = iMid - 1;
-    } else if (ch > g_XMLNameChars[iMid].wEnd) {
-      iStart = iMid + 1;
-    } else {
-      return bFirstChar ? g_XMLNameChars[iMid].bStartChar : true;
-    }
-  }
-  return false;
-}
-
-int32_t GetUTF8EncodeLength(const std::vector<wchar_t>& src,
-                            FX_FILESIZE iSrcLen) {
-  uint32_t unicode = 0;
-  int32_t iDstNum = 0;
-  const wchar_t* pSrc = src.data();
-  while (iSrcLen-- > 0) {
-    unicode = *pSrc++;
-    int nbytes = 0;
-    if ((uint32_t)unicode < 0x80) {
-      nbytes = 1;
-    } else if ((uint32_t)unicode < 0x800) {
-      nbytes = 2;
-    } else if ((uint32_t)unicode < 0x10000) {
-      nbytes = 3;
-    } else if ((uint32_t)unicode < 0x200000) {
-      nbytes = 4;
-    } else if ((uint32_t)unicode < 0x4000000) {
-      nbytes = 5;
-    } else {
-      nbytes = 6;
-    }
-    iDstNum += nbytes;
-  }
-  return iDstNum;
-}
-
-}  // namespace
-
-CFDE_XMLSyntaxParser::CFDE_XMLSyntaxParser(
-    const CFX_RetainPtr<CFX_SeekableStreamProxy>& pStream)
-    : m_pStream(pStream),
-      m_iXMLPlaneSize(32 * 1024),
-      m_iCurrentPos(0),
-      m_iCurrentNodeNum(-1),
-      m_iLastNodeNum(-1),
-      m_iParsedBytes(0),
-      m_ParsedChars(0),
-      m_iBufferChars(0),
-      m_bEOS(false),
-      m_Start(0),
-      m_End(0),
-      m_iAllocStep(m_BlockBuffer.GetAllocStep()),
-      m_pCurrentBlock(nullptr),
-      m_iIndexInBlock(0),
-      m_iTextDataLength(0),
-      m_syntaxParserResult(FDE_XmlSyntaxResult::None),
-      m_syntaxParserState(FDE_XmlSyntaxState::Text),
-      m_wQuotationMark(0),
-      m_iEntityStart(-1) {
-  ASSERT(pStream);
-
-  m_CurNode.iNodeNum = -1;
-  m_CurNode.eNodeType = FDE_XMLNODE_Unknown;
-
-  m_iXMLPlaneSize =
-      std::min(m_iXMLPlaneSize,
-               pdfium::base::checked_cast<FX_STRSIZE>(m_pStream->GetLength()));
-  m_iCurrentPos = m_pStream->GetBOMLength();
-
-  FX_SAFE_STRSIZE alloc_size_safe = m_iXMLPlaneSize;
-  alloc_size_safe += 1;  // For NUL.
-  if (!alloc_size_safe.IsValid() || alloc_size_safe.ValueOrDie() <= 0) {
-    m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-    return;
-  }
-
-  m_Buffer.resize(pdfium::base::ValueOrDieForType<size_t>(alloc_size_safe));
-
-  m_BlockBuffer.InitBuffer();
-  std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-      m_BlockBuffer.GetAvailableBlock();
-}
-
-CFDE_XMLSyntaxParser::~CFDE_XMLSyntaxParser() {}
-
-FDE_XmlSyntaxResult CFDE_XMLSyntaxParser::DoSyntaxParse() {
-  if (m_syntaxParserResult == FDE_XmlSyntaxResult::Error ||
-      m_syntaxParserResult == FDE_XmlSyntaxResult::EndOfString) {
-    return m_syntaxParserResult;
-  }
-
-  int32_t iStreamLength = m_pStream->GetLength();
-  int32_t iPos;
-
-  FDE_XmlSyntaxResult syntaxParserResult = FDE_XmlSyntaxResult::None;
-  while (true) {
-    if (m_Start >= m_End) {
-      if (m_bEOS || m_iCurrentPos >= iStreamLength) {
-        m_syntaxParserResult = FDE_XmlSyntaxResult::EndOfString;
-        return m_syntaxParserResult;
-      }
-      m_ParsedChars += m_End;
-      m_iParsedBytes = m_iCurrentPos;
-      if (m_pStream->GetPosition() != m_iCurrentPos)
-        m_pStream->Seek(CFX_SeekableStreamProxy::Pos::Begin, m_iCurrentPos);
-
-      m_iBufferChars =
-          m_pStream->ReadString(m_Buffer.data(), m_iXMLPlaneSize, &m_bEOS);
-      iPos = m_pStream->GetPosition();
-      if (m_iBufferChars < 1) {
-        m_iCurrentPos = iStreamLength;
-        m_syntaxParserResult = FDE_XmlSyntaxResult::EndOfString;
-        return m_syntaxParserResult;
-      }
-      m_iCurrentPos = iPos;
-      m_Start = 0;
-      m_End = m_iBufferChars;
-    }
-
-    while (m_Start < m_End) {
-      wchar_t ch = m_Buffer[m_Start];
-      switch (m_syntaxParserState) {
-        case FDE_XmlSyntaxState::Text:
-          if (ch == L'<') {
-            if (!m_BlockBuffer.IsEmpty()) {
-              m_iTextDataLength = m_BlockBuffer.GetDataLength();
-              m_BlockBuffer.Reset(true);
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              m_iEntityStart = -1;
-              syntaxParserResult = FDE_XmlSyntaxResult::Text;
-            } else {
-              m_Start++;
-              m_syntaxParserState = FDE_XmlSyntaxState::Node;
-            }
-          } else {
-            ParseTextChar(ch);
-          }
-          break;
-        case FDE_XmlSyntaxState::Node:
-          if (ch == L'!') {
-            m_Start++;
-            m_syntaxParserState = FDE_XmlSyntaxState::SkipCommentOrDecl;
-          } else if (ch == L'/') {
-            m_Start++;
-            m_syntaxParserState = FDE_XmlSyntaxState::CloseElement;
-          } else if (ch == L'?') {
-            m_iLastNodeNum++;
-            m_iCurrentNodeNum = m_iLastNodeNum;
-            m_CurNode.iNodeNum = m_iLastNodeNum;
-            m_CurNode.eNodeType = FDE_XMLNODE_Instruction;
-            m_XMLNodeStack.push(m_CurNode);
-            m_Start++;
-            m_syntaxParserState = FDE_XmlSyntaxState::Target;
-            syntaxParserResult = FDE_XmlSyntaxResult::InstructionOpen;
-          } else {
-            m_iLastNodeNum++;
-            m_iCurrentNodeNum = m_iLastNodeNum;
-            m_CurNode.iNodeNum = m_iLastNodeNum;
-            m_CurNode.eNodeType = FDE_XMLNODE_Element;
-            m_XMLNodeStack.push(m_CurNode);
-            m_syntaxParserState = FDE_XmlSyntaxState::Tag;
-            syntaxParserResult = FDE_XmlSyntaxResult::ElementOpen;
-          }
-          break;
-        case FDE_XmlSyntaxState::Target:
-        case FDE_XmlSyntaxState::Tag:
-          if (!IsXMLNameChar(ch, m_BlockBuffer.IsEmpty())) {
-            if (m_BlockBuffer.IsEmpty()) {
-              m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-              return m_syntaxParserResult;
-            }
-
-            m_iTextDataLength = m_BlockBuffer.GetDataLength();
-            m_BlockBuffer.Reset(true);
-            std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                m_BlockBuffer.GetAvailableBlock();
-            if (m_syntaxParserState != FDE_XmlSyntaxState::Target)
-              syntaxParserResult = FDE_XmlSyntaxResult::TagName;
-            else
-              syntaxParserResult = FDE_XmlSyntaxResult::TargetName;
-
-            m_syntaxParserState = FDE_XmlSyntaxState::AttriName;
-          } else {
-            if (m_iIndexInBlock == m_iAllocStep) {
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              if (!m_pCurrentBlock) {
-                return FDE_XmlSyntaxResult::Error;
-              }
-            }
-            m_pCurrentBlock[m_iIndexInBlock++] = ch;
-            m_BlockBuffer.IncrementDataLength();
-            m_Start++;
-          }
-          break;
-        case FDE_XmlSyntaxState::AttriName:
-          if (m_BlockBuffer.IsEmpty() && IsXMLWhiteSpace(ch)) {
-            m_Start++;
-            break;
-          }
-          if (!IsXMLNameChar(ch, m_BlockBuffer.IsEmpty())) {
-            if (m_BlockBuffer.IsEmpty()) {
-              if (m_CurNode.eNodeType == FDE_XMLNODE_Element) {
-                if (ch == L'>' || ch == L'/') {
-                  m_syntaxParserState = FDE_XmlSyntaxState::BreakElement;
-                  break;
-                }
-              } else if (m_CurNode.eNodeType == FDE_XMLNODE_Instruction) {
-                if (ch == L'?') {
-                  m_syntaxParserState = FDE_XmlSyntaxState::CloseInstruction;
-                  m_Start++;
-                } else {
-                  m_syntaxParserState = FDE_XmlSyntaxState::TargetData;
-                }
-                break;
-              }
-              m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-              return m_syntaxParserResult;
-            } else {
-              if (m_CurNode.eNodeType == FDE_XMLNODE_Instruction) {
-                if (ch != '=' && !IsXMLWhiteSpace(ch)) {
-                  m_syntaxParserState = FDE_XmlSyntaxState::TargetData;
-                  break;
-                }
-              }
-              m_iTextDataLength = m_BlockBuffer.GetDataLength();
-              m_BlockBuffer.Reset(true);
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              m_syntaxParserState = FDE_XmlSyntaxState::AttriEqualSign;
-              syntaxParserResult = FDE_XmlSyntaxResult::AttriName;
-            }
-          } else {
-            if (m_iIndexInBlock == m_iAllocStep) {
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              if (!m_pCurrentBlock) {
-                return FDE_XmlSyntaxResult::Error;
-              }
-            }
-            m_pCurrentBlock[m_iIndexInBlock++] = ch;
-            m_BlockBuffer.IncrementDataLength();
-            m_Start++;
-          }
-          break;
-        case FDE_XmlSyntaxState::AttriEqualSign:
-          if (IsXMLWhiteSpace(ch)) {
-            m_Start++;
-            break;
-          }
-          if (ch != L'=') {
-            if (m_CurNode.eNodeType == FDE_XMLNODE_Instruction) {
-              m_syntaxParserState = FDE_XmlSyntaxState::TargetData;
-              break;
-            }
-            m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-            return m_syntaxParserResult;
-          } else {
-            m_syntaxParserState = FDE_XmlSyntaxState::AttriQuotation;
-            m_Start++;
-          }
-          break;
-        case FDE_XmlSyntaxState::AttriQuotation:
-          if (IsXMLWhiteSpace(ch)) {
-            m_Start++;
-            break;
-          }
-          if (ch != L'\"' && ch != L'\'') {
-            m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-            return m_syntaxParserResult;
-          } else {
-            m_wQuotationMark = ch;
-            m_syntaxParserState = FDE_XmlSyntaxState::AttriValue;
-            m_Start++;
-          }
-          break;
-        case FDE_XmlSyntaxState::AttriValue:
-          if (ch == m_wQuotationMark) {
-            if (m_iEntityStart > -1) {
-              m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-              return m_syntaxParserResult;
-            }
-            m_iTextDataLength = m_BlockBuffer.GetDataLength();
-            m_wQuotationMark = 0;
-            m_BlockBuffer.Reset(true);
-            std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                m_BlockBuffer.GetAvailableBlock();
-            m_Start++;
-            m_syntaxParserState = FDE_XmlSyntaxState::AttriName;
-            syntaxParserResult = FDE_XmlSyntaxResult::AttriValue;
-          } else {
-            ParseTextChar(ch);
-          }
-          break;
-        case FDE_XmlSyntaxState::CloseInstruction:
-          if (ch != L'>') {
-            if (m_iIndexInBlock == m_iAllocStep) {
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              if (!m_pCurrentBlock) {
-                return FDE_XmlSyntaxResult::Error;
-              }
-            }
-            m_pCurrentBlock[m_iIndexInBlock++] = ch;
-            m_BlockBuffer.IncrementDataLength();
-            m_syntaxParserState = FDE_XmlSyntaxState::TargetData;
-          } else if (!m_BlockBuffer.IsEmpty()) {
-            m_iTextDataLength = m_BlockBuffer.GetDataLength();
-            m_BlockBuffer.Reset(true);
-            std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                m_BlockBuffer.GetAvailableBlock();
-            syntaxParserResult = FDE_XmlSyntaxResult::TargetData;
-          } else {
-            m_Start++;
-            if (m_XMLNodeStack.empty()) {
-              m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-              return m_syntaxParserResult;
-            }
-            m_XMLNodeStack.pop();
-            if (!m_XMLNodeStack.empty()) {
-              m_CurNode = m_XMLNodeStack.top();
-            } else {
-              m_CurNode.iNodeNum = -1;
-              m_CurNode.eNodeType = FDE_XMLNODE_Unknown;
-            }
-            m_iCurrentNodeNum = m_CurNode.iNodeNum;
-            m_BlockBuffer.Reset(true);
-            std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                m_BlockBuffer.GetAvailableBlock();
-            m_syntaxParserState = FDE_XmlSyntaxState::Text;
-            syntaxParserResult = FDE_XmlSyntaxResult::InstructionClose;
-          }
-          break;
-        case FDE_XmlSyntaxState::BreakElement:
-          if (ch == L'>') {
-            m_syntaxParserState = FDE_XmlSyntaxState::Text;
-            syntaxParserResult = FDE_XmlSyntaxResult::ElementBreak;
-          } else if (ch == L'/') {
-            m_syntaxParserState = FDE_XmlSyntaxState::CloseElement;
-          } else {
-            m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-            return m_syntaxParserResult;
-          }
-          m_Start++;
-          break;
-        case FDE_XmlSyntaxState::CloseElement:
-          if (!IsXMLNameChar(ch, m_BlockBuffer.IsEmpty())) {
-            if (ch == L'>') {
-              if (m_XMLNodeStack.empty()) {
-                m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-                return m_syntaxParserResult;
-              }
-              m_XMLNodeStack.pop();
-              if (!m_XMLNodeStack.empty()) {
-                m_CurNode = m_XMLNodeStack.top();
-              } else {
-                m_CurNode.iNodeNum = -1;
-                m_CurNode.eNodeType = FDE_XMLNODE_Unknown;
-              }
-              m_iCurrentNodeNum = m_CurNode.iNodeNum;
-              m_iTextDataLength = m_BlockBuffer.GetDataLength();
-              m_BlockBuffer.Reset(true);
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              m_syntaxParserState = FDE_XmlSyntaxState::Text;
-              syntaxParserResult = FDE_XmlSyntaxResult::ElementClose;
-            } else if (!IsXMLWhiteSpace(ch)) {
-              m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-              return m_syntaxParserResult;
-            }
-          } else {
-            if (m_iIndexInBlock == m_iAllocStep) {
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              if (!m_pCurrentBlock) {
-                return FDE_XmlSyntaxResult::Error;
-              }
-            }
-            m_pCurrentBlock[m_iIndexInBlock++] = ch;
-            m_BlockBuffer.IncrementDataLength();
-          }
-          m_Start++;
-          break;
-        case FDE_XmlSyntaxState::SkipCommentOrDecl:
-          if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"--", 2) == 0) {
-            m_Start += 2;
-            m_syntaxParserState = FDE_XmlSyntaxState::SkipComment;
-          } else if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"[CDATA[", 7) ==
-                     0) {
-            m_Start += 7;
-            m_syntaxParserState = FDE_XmlSyntaxState::SkipCData;
-          } else {
-            m_syntaxParserState = FDE_XmlSyntaxState::SkipDeclNode;
-            m_SkipChar = L'>';
-            m_SkipStack.push(L'>');
-          }
-          break;
-        case FDE_XmlSyntaxState::SkipCData: {
-          if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"]]>", 3) == 0) {
-            m_Start += 3;
-            syntaxParserResult = FDE_XmlSyntaxResult::CData;
-            m_iTextDataLength = m_BlockBuffer.GetDataLength();
-            m_BlockBuffer.Reset(true);
-            std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                m_BlockBuffer.GetAvailableBlock();
-            m_syntaxParserState = FDE_XmlSyntaxState::Text;
-          } else {
-            if (m_iIndexInBlock == m_iAllocStep) {
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              if (!m_pCurrentBlock)
-                return FDE_XmlSyntaxResult::Error;
-            }
-            m_pCurrentBlock[m_iIndexInBlock++] = ch;
-            m_BlockBuffer.IncrementDataLength();
-            m_Start++;
-          }
-          break;
-        }
-        case FDE_XmlSyntaxState::SkipDeclNode:
-          if (m_SkipChar == L'\'' || m_SkipChar == L'\"') {
-            m_Start++;
-            if (ch != m_SkipChar)
-              break;
-
-            m_SkipStack.pop();
-            if (m_SkipStack.empty())
-              m_syntaxParserState = FDE_XmlSyntaxState::Text;
-            else
-              m_SkipChar = m_SkipStack.top();
-          } else {
-            switch (ch) {
-              case L'<':
-                m_SkipChar = L'>';
-                m_SkipStack.push(L'>');
-                break;
-              case L'[':
-                m_SkipChar = L']';
-                m_SkipStack.push(L']');
-                break;
-              case L'(':
-                m_SkipChar = L')';
-                m_SkipStack.push(L')');
-                break;
-              case L'\'':
-                m_SkipChar = L'\'';
-                m_SkipStack.push(L'\'');
-                break;
-              case L'\"':
-                m_SkipChar = L'\"';
-                m_SkipStack.push(L'\"');
-                break;
-              default:
-                if (ch == m_SkipChar) {
-                  m_SkipStack.pop();
-                  if (m_SkipStack.empty()) {
-                    if (m_BlockBuffer.GetDataLength() >= 9)
-                      (void)m_BlockBuffer.GetTextData(0, 7);
-
-                    m_iTextDataLength = m_BlockBuffer.GetDataLength();
-                    m_BlockBuffer.Reset(true);
-                    std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                        m_BlockBuffer.GetAvailableBlock();
-                    m_syntaxParserState = FDE_XmlSyntaxState::Text;
-                  } else {
-                    m_SkipChar = m_SkipStack.top();
-                  }
-                }
-                break;
-            }
-            if (!m_SkipStack.empty()) {
-              if (m_iIndexInBlock == m_iAllocStep) {
-                std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                    m_BlockBuffer.GetAvailableBlock();
-                if (!m_pCurrentBlock) {
-                  return FDE_XmlSyntaxResult::Error;
-                }
-              }
-              m_pCurrentBlock[m_iIndexInBlock++] = ch;
-              m_BlockBuffer.IncrementDataLength();
-            }
-            m_Start++;
-          }
-          break;
-        case FDE_XmlSyntaxState::SkipComment:
-          if (FXSYS_wcsnicmp(m_Buffer.data() + m_Start, L"-->", 3) == 0) {
-            m_Start += 2;
-            m_syntaxParserState = FDE_XmlSyntaxState::Text;
-          }
-
-          m_Start++;
-          break;
-        case FDE_XmlSyntaxState::TargetData:
-          if (IsXMLWhiteSpace(ch)) {
-            if (m_BlockBuffer.IsEmpty()) {
-              m_Start++;
-              break;
-            } else if (m_wQuotationMark == 0) {
-              m_iTextDataLength = m_BlockBuffer.GetDataLength();
-              m_wQuotationMark = 0;
-              m_BlockBuffer.Reset(true);
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              m_Start++;
-              syntaxParserResult = FDE_XmlSyntaxResult::TargetData;
-              break;
-            }
-          }
-          if (ch == '?') {
-            m_syntaxParserState = FDE_XmlSyntaxState::CloseInstruction;
-            m_Start++;
-          } else if (ch == '\"') {
-            if (m_wQuotationMark == 0) {
-              m_wQuotationMark = ch;
-              m_Start++;
-            } else if (ch == m_wQuotationMark) {
-              m_iTextDataLength = m_BlockBuffer.GetDataLength();
-              m_wQuotationMark = 0;
-              m_BlockBuffer.Reset(true);
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              m_Start++;
-              syntaxParserResult = FDE_XmlSyntaxResult::TargetData;
-            } else {
-              m_syntaxParserResult = FDE_XmlSyntaxResult::Error;
-              return m_syntaxParserResult;
-            }
-          } else {
-            if (m_iIndexInBlock == m_iAllocStep) {
-              std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-                  m_BlockBuffer.GetAvailableBlock();
-              if (!m_pCurrentBlock) {
-                return FDE_XmlSyntaxResult::Error;
-              }
-            }
-            m_pCurrentBlock[m_iIndexInBlock++] = ch;
-            m_BlockBuffer.IncrementDataLength();
-            m_Start++;
-          }
-          break;
-        default:
-          break;
-      }
-      if (syntaxParserResult != FDE_XmlSyntaxResult::None)
-        return syntaxParserResult;
-    }
-  }
-  return FDE_XmlSyntaxResult::Text;
-}
-
-int32_t CFDE_XMLSyntaxParser::GetStatus() const {
-  if (!m_pStream)
-    return -1;
-
-  int32_t iStreamLength = m_pStream->GetLength();
-  if (iStreamLength < 1)
-    return 100;
-
-  if (m_syntaxParserResult == FDE_XmlSyntaxResult::Error)
-    return -1;
-
-  if (m_syntaxParserResult == FDE_XmlSyntaxResult::EndOfString)
-    return 100;
-  return m_iParsedBytes * 100 / iStreamLength;
-}
-
-FX_FILESIZE CFDE_XMLSyntaxParser::GetCurrentBinaryPos() const {
-  if (!m_pStream)
-    return 0;
-
-  int32_t nDstLen = GetUTF8EncodeLength(m_Buffer, m_Start);
-  return m_iParsedBytes + nDstLen;
-}
-
-void CFDE_XMLSyntaxParser::ParseTextChar(wchar_t character) {
-  if (m_iIndexInBlock == m_iAllocStep) {
-    std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-        m_BlockBuffer.GetAvailableBlock();
-    if (!m_pCurrentBlock)
-      return;
-  }
-
-  m_pCurrentBlock[m_iIndexInBlock++] = character;
-  m_BlockBuffer.IncrementDataLength();
-  if (m_iEntityStart > -1 && character == L';') {
-    CFX_WideString csEntity = m_BlockBuffer.GetTextData(
-        m_iEntityStart + 1,
-        m_BlockBuffer.GetDataLength() - 1 - m_iEntityStart - 1);
-    int32_t iLen = csEntity.GetLength();
-    if (iLen > 0) {
-      if (csEntity[0] == L'#') {
-        uint32_t ch = 0;
-        wchar_t w;
-        if (iLen > 1 && csEntity[1] == L'x') {
-          for (int32_t i = 2; i < iLen; i++) {
-            w = csEntity[i];
-            if (w >= L'0' && w <= L'9') {
-              ch = (ch << 4) + w - L'0';
-            } else if (w >= L'A' && w <= L'F') {
-              ch = (ch << 4) + w - 55;
-            } else if (w >= L'a' && w <= L'f') {
-              ch = (ch << 4) + w - 87;
-            } else {
-              break;
-            }
-          }
-        } else {
-          for (int32_t i = 1; i < iLen; i++) {
-            w = csEntity[i];
-            if (w < L'0' || w > L'9')
-              break;
-            ch = ch * 10 + w - L'0';
-          }
-        }
-        if (ch > kMaxCharRange)
-          ch = ' ';
-
-        character = static_cast<wchar_t>(ch);
-        if (character != 0) {
-          m_BlockBuffer.SetTextChar(m_iEntityStart, character);
-          m_iEntityStart++;
-        }
-      } else {
-        if (csEntity.Compare(L"amp") == 0) {
-          m_BlockBuffer.SetTextChar(m_iEntityStart, L'&');
-          m_iEntityStart++;
-        } else if (csEntity.Compare(L"lt") == 0) {
-          m_BlockBuffer.SetTextChar(m_iEntityStart, L'<');
-          m_iEntityStart++;
-        } else if (csEntity.Compare(L"gt") == 0) {
-          m_BlockBuffer.SetTextChar(m_iEntityStart, L'>');
-          m_iEntityStart++;
-        } else if (csEntity.Compare(L"apos") == 0) {
-          m_BlockBuffer.SetTextChar(m_iEntityStart, L'\'');
-          m_iEntityStart++;
-        } else if (csEntity.Compare(L"quot") == 0) {
-          m_BlockBuffer.SetTextChar(m_iEntityStart, L'\"');
-          m_iEntityStart++;
-        }
-      }
-    }
-    if (m_iEntityStart >= 0 &&
-        m_BlockBuffer.GetDataLength() > static_cast<size_t>(m_iEntityStart)) {
-      m_BlockBuffer.DeleteTextChars(m_BlockBuffer.GetDataLength() -
-                                    m_iEntityStart);
-    }
-    std::tie(m_pCurrentBlock, m_iIndexInBlock) =
-        m_BlockBuffer.GetAvailableBlock();
-    m_iEntityStart = -1;
-  } else if (m_iEntityStart < 0 && character == L'&') {
-    m_iEntityStart = m_BlockBuffer.GetDataLength() - 1;
-  }
-  m_Start++;
-}