Cleanup some xfa/fxfa code.

This CL moves the .h files to have names corresponding to the contained
classes. The .cpp files are moved alongside the .h files. Any extra
classes in the .h files have been split into their own files.

Change-Id: I14b4efc02417f0df946500e87b6c502e77020db8
Reviewed-on: https://pdfium-review.googlesource.com/3160
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/xfa/fxfa/cxfa_saxreaderhandler.cpp b/xfa/fxfa/cxfa_saxreaderhandler.cpp
new file mode 100644
index 0000000000..c09bdf5b4c
--- /dev/null
+++ b/xfa/fxfa/cxfa_saxreaderhandler.cpp
@@ -0,0 +1,129 @@
+// 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/fxfa/cxfa_saxreaderhandler.h"
+
+#include "xfa/fxfa/cxfa_checksumcontext.h"
+
+CXFA_SAXReaderHandler::CXFA_SAXReaderHandler(CXFA_ChecksumContext* pContext)
+    : m_pContext(pContext) {
+  ASSERT(m_pContext);
+}
+
+CXFA_SAXReaderHandler::~CXFA_SAXReaderHandler() {}
+
+CXFA_SAXContext* CXFA_SAXReaderHandler::OnTagEnter(
+    const CFX_ByteStringC& bsTagName,
+    CFX_SAXItem::Type eType,
+    uint32_t dwStartPos) {
+  UpdateChecksum(true);
+  if (eType != CFX_SAXItem::Type::Tag &&
+      eType != CFX_SAXItem::Type::Instruction) {
+    return nullptr;
+  }
+
+  m_SAXContext.m_eNode = eType;
+  CFX_ByteTextBuf& textBuf = m_SAXContext.m_TextBuf;
+  textBuf << "<";
+  if (eType == CFX_SAXItem::Type::Instruction)
+    textBuf << "?";
+
+  textBuf << bsTagName;
+  m_SAXContext.m_bsTagName = bsTagName;
+  return &m_SAXContext;
+}
+
+void CXFA_SAXReaderHandler::OnTagAttribute(CXFA_SAXContext* pTag,
+                                           const CFX_ByteStringC& bsAttri,
+                                           const CFX_ByteStringC& bsValue) {
+  if (!pTag)
+    return;
+  pTag->m_TextBuf << " " << bsAttri << "=\"" << bsValue << "\"";
+}
+
+void CXFA_SAXReaderHandler::OnTagBreak(CXFA_SAXContext* pTag) {
+  if (!pTag)
+    return;
+
+  pTag->m_TextBuf << ">";
+  UpdateChecksum(false);
+}
+
+void CXFA_SAXReaderHandler::OnTagData(CXFA_SAXContext* pTag,
+                                      CFX_SAXItem::Type eType,
+                                      const CFX_ByteStringC& bsData,
+                                      uint32_t dwStartPos) {
+  if (!pTag)
+    return;
+
+  CFX_ByteTextBuf& textBuf = pTag->m_TextBuf;
+  if (eType == CFX_SAXItem::Type::CharData)
+    textBuf << "<![CDATA[";
+
+  textBuf << bsData;
+  if (eType == CFX_SAXItem::Type::CharData)
+    textBuf << "]]>";
+}
+
+void CXFA_SAXReaderHandler::OnTagClose(CXFA_SAXContext* pTag,
+                                       uint32_t dwEndPos) {
+  if (!pTag)
+    return;
+
+  CFX_ByteTextBuf& textBuf = pTag->m_TextBuf;
+  if (pTag->m_eNode == CFX_SAXItem::Type::Instruction)
+    textBuf << "?>";
+  else if (pTag->m_eNode == CFX_SAXItem::Type::Tag)
+    textBuf << "></" << pTag->m_bsTagName.AsStringC() << ">";
+
+  UpdateChecksum(false);
+}
+
+void CXFA_SAXReaderHandler::OnTagEnd(CXFA_SAXContext* pTag,
+                                     const CFX_ByteStringC& bsTagName,
+                                     uint32_t dwEndPos) {
+  if (!pTag)
+    return;
+
+  pTag->m_TextBuf << "</" << bsTagName << ">";
+  UpdateChecksum(false);
+}
+
+void CXFA_SAXReaderHandler::OnTargetData(CXFA_SAXContext* pTag,
+                                         CFX_SAXItem::Type eType,
+                                         const CFX_ByteStringC& bsData,
+                                         uint32_t dwStartPos) {
+  if (!pTag && eType != CFX_SAXItem::Type::Comment)
+    return;
+
+  if (eType == CFX_SAXItem::Type::Comment) {
+    m_SAXContext.m_TextBuf << "<!--" << bsData << "-->";
+    UpdateChecksum(false);
+  } else {
+    pTag->m_TextBuf << " " << bsData;
+  }
+}
+
+void CXFA_SAXReaderHandler::UpdateChecksum(bool bCheckSpace) {
+  int32_t iLength = m_SAXContext.m_TextBuf.GetLength();
+  if (iLength < 1)
+    return;
+
+  uint8_t* pBuffer = m_SAXContext.m_TextBuf.GetBuffer();
+  bool bUpdata = true;
+  if (bCheckSpace) {
+    bUpdata = false;
+    for (int32_t i = 0; i < iLength; i++) {
+      bUpdata = (pBuffer[i] > 0x20);
+      if (bUpdata)
+        break;
+    }
+  }
+  if (bUpdata)
+    m_pContext->Update(CFX_ByteStringC(pBuffer, iLength));
+
+  m_SAXContext.m_TextBuf.Clear();
+}