rapidxml学习记录

一、资料

官网：http://rapidxml.sourceforge.net/
参考：
https://blog.csdn.net/wqvbjhc/article/details/7662931
http://blog.sina.com.cn/s/blog_9b0604b40101o6fm.html

二、需要修改代码

rapidxml_print.hpp在// Internal printing operations后添加声明

template<class OutIt, class Ch>
OutIt print_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);    template<class OutIt, class Ch>
OutIt print_element_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);template<class OutIt, class Ch>OutIt print_data_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);template<class OutIt, class Ch>
OutIt print_cdata_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);template<class OutIt, class Ch>
OutIt print_declaration_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);template<class OutIt, class Ch>
OutIt print_comment_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);template<class OutIt, class Ch>
OutIt print_doctype_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);template<class OutIt, class Ch>OutIt print_pi_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);

main.cpp

#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <functional>
#include <memory>
#include <sstream>
using namespace std;//下面三个文件是本段代码需要的库文件
#include "rapidxml/rapidxml.hpp"
#include "rapidxml/rapidxml_utils.hpp"
#include "rapidxml/rapidxml_print.hpp"using namespace rapidxml;int CreateXml();
int ReadAndChangeXml();
void DeleteNode();
void EditNode();
void PrintAllNode();
int main()
{CreateXml();//ReadAndChangeXml();//DeleteNode();//EditNode();PrintAllNode();cout << "hello" << endl;return 0;
}
//创建一个名称为config.xml文件
int CreateXml()
{xml_document<> doc;  xml_node<>* rot = doc.allocate_node(rapidxml::node_pi,doc.allocate_string("xml version='1.0' encoding='utf-8'"));doc.append_node(rot);xml_node<>* node =   doc.allocate_node(node_element,"config","information");  xml_node<>* color =   doc.allocate_node(node_element,"color",NULL);  doc.append_node(node);node->append_node(color);color->append_node(doc.allocate_node(node_element,"red","0.1"));color->append_node(doc.allocate_node(node_element,"green","0.1"));color->append_node(doc.allocate_node(node_element,"blue","0.1"));color->append_node(doc.allocate_node(node_element,"alpha","1.0"));xml_node<>* size =   doc.allocate_node(node_element,"size",NULL); size->append_node(doc.allocate_node(node_element,"x","640"));size->append_node(doc.allocate_node(node_element,"y","480"));node->append_node(size);xml_node<>* mode = doc.allocate_node(rapidxml::node_element,"mode","screen mode");mode->append_attribute(doc.allocate_attribute("fullscreen","false"));//添加属性node->append_node(mode);std::string text;  rapidxml::print(std::back_inserter(text), doc, 0);  std::cout<<text<<std::endl; std::ofstream out("config.xml");out << doc;
}//读取并修改config.xml
int ReadAndChangeXml()
{file<> fdoc("config.xml");std::cout<<fdoc.data()<<std::endl;xml_document<>   doc;doc.parse<0>(fdoc.data());std::cout<<doc.name()<<std::endl;//! 获取根节点rapidxml::xml_node<>* root = doc.first_node();std::cout<<root->name()<<std::endl;//! 获取根节点第一个节点(没有利用first查找功能)rapidxml::xml_node<>* node1 = root->first_node();std::cout<<node1->name()<<std::endl;rapidxml::xml_node<>* node11 = node1->first_node();std::cout<<node11->name()<<std::endl;std::cout<<node11->value()<<std::endl;//! 在size结点下添加(利用first查找功能)xml_node<>* size = root->first_node("size");size->append_node(doc.allocate_node(node_element,"w","0"));size->append_node(doc.allocate_node(node_element,"h","0"));std::string text;rapidxml::print(std::back_inserter(text),doc,0);std::cout<<text<<std::endl;std::ofstream out("config.xml");out << doc;}void DeleteNode()
{file<> fdoc("config.xml");xml_document<>   doc;doc.parse<0>(fdoc.data());std::string text;  rapidxml::print(std::back_inserter(text), doc, 0);  std::cout<<text<<std::endl; xml_node<>* root = doc.first_node();xml_node<>* sec = root->first_node();root->remove_node(sec); //移除根节点下的sec结点(包括该结点下所有结点)text="删除一个节点\r\n";  rapidxml::print(std::back_inserter(text), doc, 0);  std::cout<<text<<std::endl; root->remove_all_nodes(); //移除根节点下所有结点text="删除所有节点\r\n";  rapidxml::print(std::back_inserter(text), doc, 0);  std::cout<<text<<std::endl; }void EditNode()
{file<> fdoc("config.xml");xml_document<>   doc;doc.parse<0>(fdoc.data());xml_node<>* root = doc.first_node();xml_node<>* delnode = root->first_node("color");root->remove_node(delnode);//先删除color节点xml_node<>* lnode = root->first_node("size");//找到size节点xml_node<>* mynode=doc.allocate_node(node_element,"address","河北");root->insert_node(lnode,mynode);//添加address兄弟节点std::string text;  rapidxml::print(std::back_inserter(text), doc, 0);  std::cout<<text<<std::endl; }void PrintAllNode()
{file<> fdoc("config.xml");xml_document<>   doc;doc.parse<0>(fdoc.data());xml_node<>* root = doc.first_node();//依次找到兄弟结点，若兄弟结点仍有子节点，则无法打印值，需递归for(rapidxml::xml_node<char> * node = root->first_node("color");node != NULL;node = node->next_sibling()){std::cout<<node->name() << ": " << node->value()<<std::endl;}}

原型输出：

<?xml version='1.0' encoding='utf-8' ?>
<config><color><red>0.1</red><green>0.1</green><blue>0.1</blue><alpha>1.0</alpha></color><size><x>640</x><y>480</y></size><mode fullscreen="false">screen mode</mode>
</config>

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rapidxml学习记录

一、资料

二、需要修改代码

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