Move xml and svg to lower levels.

src/base/core/xml/XmlParser.h

@@ -0,0 +1,102 @@
+#pragma once
+
+#include <string>
+#include <stack>
+#include <memory>
+
+class XmlDocument;
+using XmlDocumentPtr = std::unique_ptr<XmlDocument>;
+
+class XmlElement;
+
+class XmlParser
+{
+public:
+    enum class DocumentState
+    {
+        Await_Prolog,
+        Build_Prolog,
+        Await_Element,
+        Build_Element,
+        Close_Element
+    };
+
+    enum class LineState
+    {
+        Await_Tag_Open,
+        Await_Tag_Follower,
+        Await_Tag_Name,
+        Await_Tag_Name_End,
+        Await_Tag_Inline_Close,
+        Await_Attribute_Name,
+        Await_Attribute_Name_End,
+        Await_Attribute_Value,
+        Await_Attribute_Value_End,
+        Await_Text_End
+    };
+
+public:
+    XmlParser();
+
+    void processLine(const std::string& input);
+
+    XmlDocumentPtr getDocument();
+
+private:
+    void onLeftBracket();
+
+    void onRightBracket();
+
+    void onQuestionMark();
+
+    void onForwardSlash();
+
+    void onChar(char c);
+
+    void onSpace(char c);
+
+    void onAlphaNumeric(char c);
+
+    void onNonAlphaNumeric(char c);
+
+    void onEquals();
+
+    void onDoubleQuote();
+
+    void onTagOpen();
+
+    void onTagNameStart(char c);
+
+    void onTagNameEnd();
+
+    void onTagClose();
+
+    void onTextStart(char c);
+
+    void onTextEnd();
+
+    void onAttributeNameStart(char c);
+
+    void onAttributeNameEnd();
+
+    void onAttributeValueStart();
+
+    void onAttributeValueEnd();
+
+    void onStartProlog();
+
+    void onFinishProlog();
+
+    void onElementTagEnd();
+
+private:
+    DocumentState mDocumentState;
+    LineState mLineState;
+    XmlDocumentPtr mDocument;
+    std::stack<XmlElement*> mWorkingElements;
+
+    std::string mWorkingAttributeName;
+    std::string mWorkingTagName;
+    std::string mWorkingAttributeValue;
+    std::string mWorkingText;
+};