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, 102 insertions, 0 deletions

diff --git a/core/fxcrt/xml/cfx_xmlelement.cpp b/core/fxcrt/xml/cfx_xmlelement.cpp
new file mode 100644
index 0000000000..c6b70e1cc4
--- /dev/null
+++ b/core/fxcrt/xml/cfx_xmlelement.cpp
@@ -0,0 +1,102 @@
+// 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/xml/cfx_xmlelement.h"
+
+#include "core/fxcrt/fx_ext.h"
+#include "core/fxcrt/xml/cfx_xmlchardata.h"
+#include "core/fxcrt/xml/cfx_xmltext.h"
+#include "third_party/base/ptr_util.h"
+#include "third_party/base/stl_util.h"
+
+CFX_XMLElement::CFX_XMLElement(const CFX_WideString& wsTag)
+    : CFX_XMLAttributeNode(wsTag) {}
+
+CFX_XMLElement::~CFX_XMLElement() {}
+
+FX_XMLNODETYPE CFX_XMLElement::GetType() const {
+  return FX_XMLNODE_Element;
+}
+
+std::unique_ptr<CFX_XMLNode> CFX_XMLElement::Clone() {
+  auto pClone = pdfium::MakeUnique<CFX_XMLElement>(GetName());
+  pClone->SetAttributes(GetAttributes());
+
+  CFX_WideString wsText;
+  CFX_XMLNode* pChild = m_pChild;
+  while (pChild) {
+    switch (pChild->GetType()) {
+      case FX_XMLNODE_Text:
+        wsText += static_cast<CFX_XMLText*>(pChild)->GetText();
+        break;
+      default:
+        break;
+    }
+    pChild = pChild->m_pNext;
+  }
+  pClone->SetTextData(wsText);
+  return pClone;
+}
+
+CFX_WideString CFX_XMLElement::GetLocalTagName() const {
+  FX_STRSIZE iFind = GetName().Find(L':', 0);
+  if (iFind < 0)
+    return GetName();
+  return GetName().Right(GetName().GetLength() - iFind - 1);
+}
+
+CFX_WideString CFX_XMLElement::GetNamespacePrefix() const {
+  FX_STRSIZE iFind = GetName().Find(L':', 0);
+  if (iFind < 0)
+    return CFX_WideString();
+  return GetName().Left(iFind);
+}
+
+CFX_WideString CFX_XMLElement::GetNamespaceURI() const {
+  CFX_WideString wsAttri(L"xmlns");
+  CFX_WideString wsPrefix = GetNamespacePrefix();
+  if (wsPrefix.GetLength() > 0) {
+    wsAttri += L":";
+    wsAttri += wsPrefix;
+  }
+
+  auto* pNode = static_cast<const CFX_XMLNode*>(this);
+  while (pNode) {
+    if (pNode->GetType() != FX_XMLNODE_Element)
+      break;
+
+    auto* pElement = static_cast<const CFX_XMLElement*>(pNode);
+    if (!pElement->HasAttribute(wsAttri)) {
+      pNode = pNode->GetNodeItem(CFX_XMLNode::Parent);
+      continue;
+    }
+    return pElement->GetString(wsAttri);
+  }
+  return CFX_WideString();
+}
+
+CFX_WideString CFX_XMLElement::GetTextData() const {
+  CFX_WideTextBuf buffer;
+  CFX_XMLNode* pChild = m_pChild;
+  while (pChild) {
+    switch (pChild->GetType()) {
+      case FX_XMLNODE_Text:
+      case FX_XMLNODE_CharData:
+        buffer << static_cast<CFX_XMLText*>(pChild)->GetText();
+        break;
+      default:
+        break;
+    }
+    pChild = pChild->m_pNext;
+  }
+  return buffer.MakeString();
+}
+
+void CFX_XMLElement::SetTextData(const CFX_WideString& wsText) {
+  if (wsText.GetLength() < 1)
+    return;
+  InsertChildNode(new CFX_XMLText(wsText));
+}