1 files changed, 106 insertions, 0 deletions
diff --git a/tools/source/xml/XmlWalker.cxx b/tools/source/xml/XmlWalker.cxx
new file mode 100644
index 000000000..b21c22335
--- /dev/null
+++ b/tools/source/xml/XmlWalker.cxx
@@ -0,0 +1,106 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <tools/stream.hxx>
+#include <tools/XmlWalker.hxx>
+
+#include <libxml/tree.h>
+#include <libxml/parser.h>
+#include <libxml/xmlstring.h>
+#include <vector>
+
+namespace tools
+{
+struct XmlWalkerImpl
+{
+    XmlWalkerImpl()
+        : mpDocPtr(nullptr)
+        , mpRoot(nullptr)
+        , mpCurrent(nullptr)
+    {
+    }
+
+    xmlDocPtr mpDocPtr;
+    xmlNodePtr mpRoot;
+    xmlNodePtr mpCurrent;
+
+    std::vector<xmlNodePtr> mpStack;
+};
+
+XmlWalker::XmlWalker()
+    : mpImpl(std::make_unique<XmlWalkerImpl>())
+{
+}
+
+XmlWalker::~XmlWalker()
+{
+    if (mpImpl)
+        xmlFreeDoc(mpImpl->mpDocPtr);
+}
+
+bool XmlWalker::open(SvStream* pStream)
+{
+    std::size_t nSize = pStream->remainingSize();
+    std::vector<sal_uInt8> aBuffer(nSize + 1);
+    pStream->ReadBytes(aBuffer.data(), nSize);
+    aBuffer[nSize] = 0;
+    mpImpl->mpDocPtr = xmlParseDoc(reinterpret_cast<xmlChar*>(aBuffer.data()));
+    if (mpImpl->mpDocPtr == nullptr)
+        return false;
+    mpImpl->mpRoot = xmlDocGetRootElement(mpImpl->mpDocPtr);
+    mpImpl->mpCurrent = mpImpl->mpRoot;
+    mpImpl->mpStack.push_back(mpImpl->mpCurrent);
+    return true;
+}
+
+OString XmlWalker::name() { return reinterpret_cast<const char*>(mpImpl->mpCurrent->name); }
+
+OString XmlWalker::content()
+{
+    OString aContent;
+    if (mpImpl->mpCurrent->xmlChildrenNode != nullptr)
+    {
+        xmlChar* pContent
+            = xmlNodeListGetString(mpImpl->mpDocPtr, mpImpl->mpCurrent->xmlChildrenNode, 1);
+        aContent = OString(reinterpret_cast<const char*>(pContent));
+        xmlFree(pContent);
+    }
+    return aContent;
+}
+
+void XmlWalker::children()
+{
+    mpImpl->mpStack.push_back(mpImpl->mpCurrent);
+    mpImpl->mpCurrent = mpImpl->mpCurrent->xmlChildrenNode;
+}
+
+void XmlWalker::parent()
+{
+    mpImpl->mpCurrent = mpImpl->mpStack.back();
+    mpImpl->mpStack.pop_back();
+}
+
+OString XmlWalker::attribute(const OString& sName)
+{
+    xmlChar* xmlName = xmlCharStrdup(sName.getStr());
+    xmlChar* xmlAttribute = xmlGetProp(mpImpl->mpCurrent, xmlName);
+    OString aAttributeContent(reinterpret_cast<const char*>(xmlAttribute));
+    xmlFree(xmlAttribute);
+    xmlFree(xmlName);
+
+    return aAttributeContent;
+}
+
+void XmlWalker::next() { mpImpl->mpCurrent = mpImpl->mpCurrent->next; }
+
+bool XmlWalker::isValid() const { return mpImpl->mpCurrent != nullptr; }
+
+} // end tools namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */