TinyXml使用实例

#include<iostream>
#include <string.h>
#include <cstdlib>

#include "tinystr.h"
#include "tinyxml.h"

using namespace std;

bool GetNodePointerByName(TiXmlElement* pRootEle, const char* strNodeName,TiXmlElement* &destNode)
{  //根据结点名获取结点指针
    // 假如等于根节点名，就退出
    if (0 == strcmp(strNodeName, pRootEle->Value()))
    {
        destNode = pRootEle;
        return true;
    }

    TiXmlElement* pEle = pRootEle;
    for (pEle = pRootEle->FirstChildElement(); pEle; pEle = pEle->NextSiblingElement())
    {
        // 递归处理子节点，获取节点指针
        if (0 != strcmp(pEle->Value(), strNodeName))
        {
            GetNodePointerByName(pEle,strNodeName,destNode);
        }
        else
        {
            destNode = pEle;
            printf("destination node name: %s\n", pEle->Value());
            return true;
        }
    }
    return false;
}
int readXmlFile()
{
    TiXmlDocument *mydoc=new TiXmlDocument("D:\\我的资料库\\Documents\\Visual Studio 2008\\Projects\\tinyxml\\tinyxml\\RegExWithModes.xml");
    bool loadOk=mydoc->LoadFile();
    if(!loadOk)
    {
        cout<<"could not load the test file.Error:"<<mydoc->ErrorDesc()<<endl;
        exit(1);
    }

    TiXmlElement *RootElement=mydoc->RootElement();      //根元素
    TiXmlElement *pEle=NULL;

    GetNodePointerByName(RootElement,"SearchModes",pEle);   //找到值为SearchModes的结点

    //遍历该结点
    for(TiXmlElement *SearchModeElement=pEle->FirstChildElement();SearchModeElement;SearchModeElement=SearchModeElement->NextSiblingElement())
    {
        cout<<SearchModeElement->Value()<<" ";
        TiXmlAttribute *pAttr=SearchModeElement->FirstAttribute();
        while (pAttr) //输出所有属性
        {
            cout<<pAttr->Name()<<":"<<pAttr->Value()<<" ";
            pAttr=pAttr->Next();
        }
        cout<<endl;
        {
            for(TiXmlElement *RegExElement=SearchModeElement->FirstChildElement();RegExElement;RegExElement=RegExElement->NextSiblingElement())//输出子元素的值
                cout<<RegExElement->FirstChild()->Value()<<endl;
        }
    }
    delete mydoc;
    return 1;
}
int writeXmlFile()
{
    TiXmlDocument *writeDoc=new TiXmlDocument;
    TiXmlDeclaration *decl=new TiXmlDeclaration("1.0","UTF-8","yes");
    writeDoc->LinkEndChild(decl);

    int n;      //SearchMode number;
    cout<<"Please input the number of Search Mode:";
    cin>>n;

    TiXmlElement *RootElement=new TiXmlElement("SearchModes");
    RootElement->SetAttribute("Count",n);
    writeDoc->LinkEndChild(RootElement);
    //char *SearchMode[];
    for (int i=0;i<n;i++)
    {
        TiXmlElement *SearchModeElement=new TiXmlElement("SearchMode");
        SearchModeElement->SetAttribute("Name","Numbers");
        SearchModeElement->SetAttribute("Count",4);
        SearchModeElement->SetAttribute("Space",10000);
        RootElement->LinkEndChild(SearchModeElement);
        for(int j=0;j<4;j++)
        {
            TiXmlElement *RegExElement=new TiXmlElement("RE");
            SearchModeElement->LinkEndChild(RegExElement);

            TiXmlText *RegExContent=new TiXmlText("[0-9]{2,2}");
            RegExElement->LinkEndChild(RegExContent);
        }
    }
    writeDoc->SaveFile("RegExWithModes.xml");
    delete writeDoc;
    return 1;
}
int main(int argc,char *argv[])
{
    readXmlFile();
    //writeXmlFile();
}

对于XML文档为：

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<SearchMode ModeCount="3">
    <Mode1 Name="Numbers" RECount="2" Space="110">
        <RE1>[0-9]{1,1}</RE1>
        <RE2>[0-9]{2,2}</RE2>
    </Mode1>
    <Mode2 Name="Lower_Case" RECount="3" Space="12356845">
        <RE1>[a-z]{3,3}</RE1>
        <RE2>[a-z]{4,4}</RE2>
        <RE3>[a-z]{5,5}</RE3>
    </Mode2>
    <Mode3 Name="Lower_Case_Num" RECount="4" Space="554433442">
        <RE1>[a-z0-9]{6,6}</RE1>
        <RE2>[a-z0-9]{7,7}</RE2>
        <RE3>[a-z0-9]{8,8}</RE3>
        <RE4>[a-z0-9]{9,9}</RE4>
    </Mode3>
</SearchMode>