Cleanup the xfa/src/fgas directory.

This CL moves the code from xfa/src/fgas/src up one level. It then takes the
headers in xfa/src/fgas/include and moves them to their correct folder. The
src/ and include/ directories are then removed.

In some cases, when moving from include/ there was another header with the
same name. Those headers were either folded together, or the content of the
conflicting folder moved to an anonymous namespace in the cpp file as they were
not used anywhere else.

Files with duplicate names as core/src/crt were renamed to be fgas_ instead of
fx_. (e.g. fgas_system.h, fgas_memory.h, fgas_stream.h)

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1776303002 .

1 files changed, 688 insertions, 0 deletions

diff --git a/xfa/src/fgas/xml/fgas_sax_imp.cpp b/xfa/src/fgas/xml/fgas_sax_imp.cpp
new file mode 100644
index 0000000000..f30a357497
--- /dev/null
+++ b/xfa/src/fgas/xml/fgas_sax_imp.cpp
@@ -0,0 +1,688 @@
+// 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/src/fgas/xml/fgas_sax_imp.h"
+
+#include <algorithm>
+
+namespace {
+
+const FX_DWORD kSaxFileBufSize = 32768;
+
+}  // namespace
+
+IFX_SAXReader* FX_SAXReader_Create() {
+  return new CFX_SAXReader;
+}
+CFX_SAXFile::CFX_SAXFile()
+    : m_pFile(NULL),
+      m_dwStart(0),
+      m_dwEnd(0),
+      m_dwCur(0),
+      m_pBuf(NULL),
+      m_dwBufSize(0),
+      m_dwBufIndex(0) {}
+FX_BOOL CFX_SAXFile::StartFile(IFX_FileRead* pFile,
+                               FX_DWORD dwStart,
+                               FX_DWORD dwLen) {
+  FXSYS_assert(m_pFile == NULL && pFile != NULL);
+  FX_DWORD dwSize = pFile->GetSize();
+  if (dwStart >= dwSize) {
+    return FALSE;
+  }
+  if (dwLen == -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;
+}
+FX_BOOL CFX_SAXFile::ReadNextBlock() {
+  FXSYS_assert(m_pFile != NULL);
+  FX_DWORD 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 = NULL;
+  }
+  m_pFile = NULL;
+}
+CFX_SAXReader::CFX_SAXReader()
+    : m_File(),
+      m_pHandler(nullptr),
+      m_iState(-1),
+      m_pRoot(nullptr),
+      m_pCurItem(nullptr),
+      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 = NULL;
+  }
+  if (m_pszName) {
+    FX_Free(m_pszName);
+    m_pszName = NULL;
+  }
+}
+void CFX_SAXReader::Reset() {
+  m_File.Reset();
+  CFX_SAXItem* pItem = m_pRoot;
+  while (pItem) {
+    CFX_SAXItem* pNext = pItem->m_pNext;
+    delete pItem;
+    pItem = pNext;
+  }
+  m_pRoot = NULL;
+  m_pCurItem = NULL;
+  m_dwItemID = 0;
+  m_SkipStack.RemoveAll();
+  m_SkipChar = 0;
+  m_iDataLength = 0;
+  m_iEntityStart = -1;
+  m_iNameLength = 0;
+  m_iDataPos = 0;
+  if (m_pCommentContext) {
+    delete m_pCommentContext;
+    m_pCommentContext = NULL;
+  }
+}
+inline void CFX_SAXReader::Push() {
+  CFX_SAXItem* pNew = new CFX_SAXItem;
+  pNew->m_dwID = ++m_dwItemID;
+  pNew->m_bSkip = m_pCurItem->m_bSkip;
+  pNew->m_pPrev = m_pCurItem;
+  m_pCurItem->m_pNext = pNew;
+  m_pCurItem = pNew;
+}
+inline void CFX_SAXReader::Pop() {
+  if (!m_pCurItem) {
+    return;
+  }
+  CFX_SAXItem* pPrev = m_pCurItem->m_pPrev;
+  pPrev->m_pNext = NULL;
+  delete m_pCurItem;
+  m_pCurItem = pPrev;
+}
+inline void CFX_SAXReader::AppendData(uint8_t ch) {
+  ReallocDataBuffer();
+  m_pszData[m_iDataPos++] = ch;
+}
+inline 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);
+}
+inline FX_BOOL CFX_SAXReader::SkipSpace(uint8_t ch) {
+  return (m_dwParseMode & FX_SAXPARSEMODE_NotSkipSpace) == 0 && ch < 0x21;
+}
+int32_t CFX_SAXReader::StartParse(IFX_FileRead* pFile,
+                                  FX_DWORD dwStart,
+                                  FX_DWORD dwLen,
+                                  FX_DWORD dwParseMode) {
+  m_iState = -1;
+  Reset();
+  if (!m_File.StartFile(pFile, dwStart, dwLen)) {
+    return -1;
+  }
+  m_iState = 0;
+  m_eMode = FX_SAXMODE_Text;
+  m_ePrevMode = FX_SAXMODE_Text;
+  m_bCharData = FALSE;
+  m_dwDataOffset = 0;
+  m_pRoot = m_pCurItem = new CFX_SAXItem;
+  m_pCurItem->m_dwID = ++m_dwItemID;
+  m_dwParseMode = dwParseMode;
+  return 0;
+}
+typedef void (CFX_SAXReader::*FX_SAXReader_LPFParse)();
+static const FX_SAXReader_LPFParse g_FX_SAXReader_LPFParse[FX_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,
+};
+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) {
+    FX_DWORD& index = m_File.m_dwBufIndex;
+    FX_DWORD 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[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 & FX_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 & FX_SAXPARSEMODE_NotConvert_amp) == 0) {
+            m_pszData[m_iEntityStart++] = '&';
+          }
+        } else if (csEntity.Compare("lt") == 0) {
+          if ((m_dwParseMode & FX_SAXPARSEMODE_NotConvert_lt) == 0) {
+            m_pszData[m_iEntityStart++] = '<';
+          }
+        } else if (csEntity.Compare("gt") == 0) {
+          if ((m_dwParseMode & FX_SAXPARSEMODE_NotConvert_gt) == 0) {
+            m_pszData[m_iEntityStart++] = '>';
+          }
+        } else if (csEntity.Compare("apos") == 0) {
+          if ((m_dwParseMode & FX_SAXPARSEMODE_NotConvert_apos) == 0) {
+            m_pszData[m_iEntityStart++] = '\'';
+          }
+        } else if (csEntity.Compare("quot") == 0) {
+          if ((m_dwParseMode & FX_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 = FX_SAXMODE_NodeStart;
+    return;
+  }
+  if (m_iDataPos < 1 && SkipSpace(m_CurByte)) {
+    return;
+  }
+  ParseChar(m_CurByte);
+}
+void CFX_SAXReader::ParseNodeStart() {
+  if (m_CurByte == '?') {
+    m_pCurItem->m_eNode = FX_SAXNODE_Instruction;
+    m_eMode = FX_SAXMODE_TagName;
+    return;
+  }
+  if (m_CurByte == '!') {
+    m_eMode = FX_SAXMODE_DeclOrComment;
+    return;
+  }
+  if (m_CurByte == '/') {
+    m_eMode = FX_SAXMODE_TagEnd;
+    return;
+  }
+  if (m_CurByte == '>') {
+    Pop();
+    m_eMode = FX_SAXMODE_Text;
+    return;
+  }
+  if (m_CurByte > 0x20) {
+    m_dwDataOffset = m_File.m_dwBufIndex;
+    m_pCurItem->m_eNode = FX_SAXNODE_Tag;
+    m_eMode = FX_SAXMODE_TagName;
+    AppendData(m_CurByte);
+  }
+}
+void CFX_SAXReader::ParseDeclOrComment() {
+  if (m_CurByte == '-') {
+    m_eMode = FX_SAXMODE_Comment;
+    m_pCurItem->m_eNode = FX_SAXNODE_Comment;
+    if (m_pCommentContext == NULL) {
+      m_pCommentContext = new CFX_SAXCommentContext;
+    }
+    m_pCommentContext->m_iHeaderCount = 1;
+    m_pCommentContext->m_iTailCount = 0;
+  } else {
+    m_eMode = FX_SAXMODE_DeclNode;
+    m_dwDataOffset = m_File.m_dwBufIndex;
+    m_SkipChar = '>';
+    m_SkipStack.Add('>');
+    SkipNode();
+  }
+}
+void CFX_SAXReader::ParseComment() {
+  m_pCommentContext->m_iHeaderCount = 2;
+  m_dwNodePos = m_File.m_dwCur + m_File.m_dwBufIndex;
+  m_eMode = FX_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 = FX_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 = FX_SAXMODE_TagAttributeName;
+    } else if (m_CurByte == '/' || m_CurByte == '?') {
+      m_ePrevMode = m_eMode;
+      m_eMode = FX_SAXMODE_TagMaybeClose;
+    } else {
+      if (m_pHandler) {
+        NotifyBreak();
+      }
+      m_eMode = FX_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 == '=' ? FX_SAXMODE_TagAttributeValue
+                               : FX_SAXMODE_TagAttributeEqual;
+    return;
+  }
+  if (m_CurByte == '/' || m_CurByte == '>' || m_CurByte == '?') {
+    if (m_CurByte == '/' || m_CurByte == '?') {
+      m_ePrevMode = m_eMode;
+      m_eMode = FX_SAXMODE_TagMaybeClose;
+    } else {
+      if (m_pHandler) {
+        NotifyBreak();
+      }
+      m_eMode = FX_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 = FX_SAXMODE_TagAttributeValue;
+    return;
+  } else if (m_pCurItem->m_eNode == FX_SAXNODE_Instruction) {
+    m_iDataPos = m_iNameLength;
+    AppendName(0x20);
+    m_eMode = FX_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 = FX_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 (m_pCurItem->m_eNode == FX_SAXNODE_Instruction) {
+      m_iNameLength = m_iDataPos;
+      m_iDataPos = 0;
+      if (m_pHandler) {
+        NotifyTargetData();
+      }
+    }
+    ParseTagClose();
+    m_eMode = FX_SAXMODE_Text;
+  } else if (m_ePrevMode == FX_SAXMODE_TagName) {
+    AppendData('/');
+    m_eMode = FX_SAXMODE_TagName;
+    m_ePrevMode = FX_SAXMODE_Text;
+    ParseTagName();
+  } else if (m_ePrevMode == FX_SAXMODE_TagAttributeName) {
+    AppendName('/');
+    m_eMode = FX_SAXMODE_TagAttributeName;
+    m_ePrevMode = FX_SAXMODE_Text;
+    ParseTagAttributeName();
+  } else if (m_ePrevMode == FX_SAXMODE_TargetData) {
+    AppendName('?');
+    m_eMode = FX_SAXMODE_TargetData;
+    m_ePrevMode = FX_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 = FX_SAXMODE_Text;
+  } else {
+    ParseChar(m_CurByte);
+  }
+}
+void CFX_SAXReader::ParseTargetData() {
+  if (m_CurByte == '?') {
+    m_ePrevMode = m_eMode;
+    m_eMode = FX_SAXMODE_TagMaybeClose;
+  } else {
+    AppendName(m_CurByte);
+  }
+}
+void CFX_SAXReader::SkipNode() {
+  int32_t iLen = m_SkipStack.GetSize();
+  if (m_SkipChar == '\'' || m_SkipChar == '\"') {
+    if (m_CurByte != m_SkipChar) {
+      return;
+    }
+    iLen--;
+    FXSYS_assert(iLen > -1);
+    m_SkipStack.RemoveAt(iLen, 1);
+    m_SkipChar = iLen ? m_SkipStack[iLen - 1] : 0;
+    return;
+  }
+  switch (m_CurByte) {
+    case '<':
+      m_SkipChar = '>';
+      m_SkipStack.Add('>');
+      break;
+    case '[':
+      m_SkipChar = ']';
+      m_SkipStack.Add(']');
+      break;
+    case '(':
+      m_SkipChar = ')';
+      m_SkipStack.Add(')');
+      break;
+    case '\'':
+      m_SkipChar = '\'';
+      m_SkipStack.Add('\'');
+      break;
+    case '\"':
+      m_SkipChar = '\"';
+      m_SkipStack.Add('\"');
+      break;
+    default:
+      if (m_CurByte == m_SkipChar) {
+        iLen--;
+        m_SkipStack.RemoveAt(iLen, 1);
+        m_SkipChar = iLen ? m_SkipStack[iLen - 1] : 0;
+        if (iLen == 0 && 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 = FX_SAXMODE_Text;
+        }
+      }
+      break;
+  }
+  if (iLen > 0) {
+    ParseChar(m_CurByte);
+  }
+}
+void CFX_SAXReader::NotifyData() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Tag)
+    m_pHandler->OnTagData(m_pCurItem->m_pNode,
+                          m_bCharData ? FX_SAXNODE_CharData : FX_SAXNODE_Text,
+                          CFX_ByteStringC(m_pszData, m_iDataLength),
+                          m_File.m_dwCur + m_dwDataOffset);
+}
+void CFX_SAXReader::NotifyEnter() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Tag ||
+      m_pCurItem->m_eNode == FX_SAXNODE_Instruction) {
+    m_pCurItem->m_pNode =
+        m_pHandler->OnTagEnter(CFX_ByteStringC(m_pszData, m_iDataLength),
+                               m_pCurItem->m_eNode, m_dwNodePos);
+  }
+}
+void CFX_SAXReader::NotifyAttribute() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Tag ||
+      m_pCurItem->m_eNode == FX_SAXNODE_Instruction) {
+    m_pHandler->OnTagAttribute(m_pCurItem->m_pNode,
+                               CFX_ByteStringC(m_pszName, m_iNameLength),
+                               CFX_ByteStringC(m_pszData, m_iDataLength));
+  }
+}
+void CFX_SAXReader::NotifyBreak() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Tag) {
+    m_pHandler->OnTagBreak(m_pCurItem->m_pNode);
+  }
+}
+void CFX_SAXReader::NotifyClose() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Tag ||
+      m_pCurItem->m_eNode == FX_SAXNODE_Instruction) {
+    m_pHandler->OnTagClose(m_pCurItem->m_pNode, m_dwNodePos);
+  }
+}
+void CFX_SAXReader::NotifyEnd() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Tag) {
+    m_pHandler->OnTagEnd(m_pCurItem->m_pNode,
+                         CFX_ByteStringC(m_pszData, m_iDataLength),
+                         m_dwNodePos);
+  }
+}
+void CFX_SAXReader::NotifyTargetData() {
+  FXSYS_assert(m_pHandler != NULL);
+  if (m_pCurItem->m_eNode == FX_SAXNODE_Instruction) {
+    m_pHandler->OnTargetData(m_pCurItem->m_pNode, m_pCurItem->m_eNode,
+                             CFX_ByteStringC(m_pszName, m_iNameLength),
+                             m_dwNodePos);
+  } else if (m_pCurItem->m_eNode == FX_SAXNODE_Comment) {
+    m_pHandler->OnTargetData(m_pCurItem->m_pNode, m_pCurItem->m_eNode,
+                             CFX_ByteStringC(m_pszData, m_iDataLength),
+                             m_dwNodePos);
+  }
+}
+void CFX_SAXReader::SkipCurrentNode() {
+  if (!m_pCurItem) {
+    return;
+  }
+  m_pCurItem->m_bSkip = TRUE;
+}
+void CFX_SAXReader::SetHandler(IFX_SAXReaderHandler* pHandler) {
+  m_pHandler = pHandler;
+}