QSimpleXMLParser

一个简单的、小的、并不高效、可能也不易用的XML解析器。大量借鉴了TinyXML-2。

特点与坑

• 仅支持ASCII和UTF-8。
• 递归地进行解析。
• 没有很好的组织内存，每个节点独自被new，比较松散。未来可以加入TinyXML-2那样的内存池。
• 元素的属性没有当作节点处理。
• 不处理Declaration，单纯读入其内容。
• 子节点以链表组织，不支持子节点的随机访问。
• 接口不是很合理。

使用示例

从文件中读取XML，并解析

    XMLDocument doc;
    doc.loadFile("test.xml");

访问DOM树

    XMLNode* node1 = doc.firstChild();
    for(XMLNode* p = node1; p != nullptr; p = p->nextSibling()){
        cout<<node1.getValue()<<endl;
    }

    node1.addLastChild(new XMLText("Test"));

    delete node1.firstChild();
    
    node1.removeFirstChild();

将DOM打印为XML文档

    XMLPrinter printer(std::cout);
    doc.accept(printer);

QSimpleXMLParser

A simply, small, inefficient, and probably unusable XML parser. Borrowed many things from TinyXML-2.

Feature and Flaws

• Only support ASCII and UTF-8.
• Parse xml recusively.
• Memory management is not well. Every node object is newed standalone. Maybe implement memory pool like TinyXML-2.
• Attributes of elements are not treaded treated as nodes.
• Declaration will not be process. Only store its content.
• Children of a node are originzed by a link list.
• The interfaces may be not desirable.

Example Usages

Read XML from file and parse it.

    XMLDocument doc;
    doc.loadFile("test.xml");

Visit the DOM tree.

    XMLNode* node1 = doc.firstChild();
    for(XMLNode* p = node1; p != nullptr; p = p->nextSibling()){
        cout<<node1.getValue()<<endl;
    }

    node1.addLastChild(new XMLText("Test"));

    delete node1.firstChild();
    
    node1.removeFirstChild();

Print DOM as XML document.

    XMLPrinter printer(std::cout);
    doc.accept(printer);