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//demo04.cpp
//https://github.com/dongyusheng/csdn-code/tree/master/tinyxml2
//增删改查初级版本
#include <iostream>
#include "tinyxml2.h"
#define CHECK_TINYXML2_RESULT(ret) \
do \
{ \
if (ret != tinyxml2::XML_SUCCESS) \
{ \
std::cout << __FUNCTION__ << "(" << __LINE__ << ") failed, ret = " << ret << std::endl; \
return -1; \
} \
} while (0)
/**
* @brief: 写相机属性. 产生完了之后将所有节点挂在p下面
* @param p 某个相机节点
* @param doc 所有的元素属性以及值均在doc的下面
* @param ipAddr IP地址
* @return: 返回说明
* @retval: 返回值说明
*/
static void WriteOneCameraAttibute(tinyxml2::XMLElement *p, tinyxml2::XMLDocument &doc,
const char *ipAddr)
{
const char *subnetMask = "123.45.67.89";
tinyxml2::XMLElement *pDevID = doc.NewElement("DevID");
tinyxml2::XMLText *pDevIdText = doc.NewText("5");
pDevID->InsertEndChild(pDevIdText);
p->InsertEndChild(pDevID);
tinyxml2::XMLElement *pIpAddr = doc.NewElement("IpAddress");
tinyxml2::XMLText *pIpAddrText = doc.NewText(ipAddr);
pIpAddr->InsertEndChild(pIpAddrText);
p->InsertEndChild(pIpAddr);
tinyxml2::XMLElement *pSubnetMask = doc.NewElement("SubnetMask");
tinyxml2::XMLText *pSubnetMaskText = doc.NewText(subnetMask);
pSubnetMask->InsertEndChild(pSubnetMaskText);
p->InsertEndChild(pSubnetMask);
tinyxml2::XMLElement *pExposureAuto = doc.NewElement("ExposureAuto");
tinyxml2::XMLText *pExposureAutoText = doc.NewText("false");
pExposureAuto->InsertEndChild(pExposureAutoText);
p->InsertEndChild(pExposureAuto);
tinyxml2::XMLElement *pExposureTime = doc.NewElement("ExposureTime");
tinyxml2::XMLText *pExposureTimeText = doc.NewText("200");
pExposureTime->InsertEndChild(pExposureTimeText);
p->InsertEndChild(pExposureTime);
tinyxml2::XMLElement *pTriggerMode = doc.NewElement("TriggerMode");
tinyxml2::XMLText *pTriggerModeText = doc.NewText("false");
pTriggerMode->InsertEndChild(pTriggerModeText);
p->InsertEndChild(pTriggerMode);
}
/**
* @brief: 将数据写到某个xml文件中
* @param path xml文件路径
* @return: 返回说明
* @retval: 返回值说明
*/
static int WriteParam(const std::string &path)
{
tinyxml2::XMLError ret;
tinyxml2::XMLDocument doc;
const char *declaration = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
ret = doc.Parse(declaration);
CHECK_TINYXML2_RESULT(ret);
tinyxml2::XMLElement *pFirst = doc.NewElement("CameraI");
pFirst->SetAttribute("type", "home");
pFirst->SetAttribute("price", 1000);
pFirst->SetAttribute("wifi", true);
// 内部插内容
WriteOneCameraAttibute(pFirst, doc, "1.22.32.82");
doc.InsertEndChild(pFirst);
tinyxml2::XMLElement *pSecond = doc.NewElement("CameraII");
// 内部插内容
WriteOneCameraAttibute(pSecond, doc, "2.22.32.82");
doc.InsertEndChild(pSecond);
tinyxml2::XMLElement *pThree = doc.NewElement("CameraIII");
// 内部插内容
WriteOneCameraAttibute(pThree, doc, "3.22.32.82");
doc.InsertEndChild(pThree);
ret = doc.SaveFile(path.c_str());
return 0;
}
/**
* @brief: 读取每个相机的属性
* @param p 相机节点指针
* @return: 返回说明
* @retval: 返回值说明
*/
static void ReadOneCameraAttribute(const tinyxml2::XMLElement *p)
{
int devIdContent = p->FirstChildElement("DevID")->IntText();
const char *ipAddrContent = p->FirstChildElement("IpAddress")->GetText();
const char *subnetMaskContent = p->FirstChildElement("SubnetMask")->GetText();
const char *exposureAutoContent = p->FirstChildElement("ExposureAuto")->GetText();
int64_t exposureTimeContent = p->FirstChildElement("ExposureTime")->Int64Text();
bool triggerModeContent = p->FirstChildElement("TriggerMode")->BoolText();
std::cout << "devIdContent(int):\t" << devIdContent << std::endl;
std::cout << "ipAddrContent:\t" << ipAddrContent << std::endl;
std::cout << "subnetMaskContent:\t" << subnetMaskContent << std::endl;
std::cout << "exposureAutoContent:\t" << exposureAutoContent << std::endl;
std::cout << "exposureTimeContent(int64_t):\t" << exposureTimeContent << std::endl;
std::cout << "triggerModeContent(bool):\t" << ((triggerModeContent == true) ? "true" : "false") << std::endl;
}
/**
* @brief: 读取解析某路径的xml文件
* @param path xml文件路径
* @return: 返回说明
* @retval: 返回值说明
*/
static int ReadParam(const std::string &path)
{
// 导入文件错误, 退出
tinyxml2::XMLDocument doc;
tinyxml2::XMLError error = doc.LoadFile(path.c_str());
CHECK_TINYXML2_RESULT(error);
tinyxml2::XMLElement *pFirst = doc.FirstChildElement("CameraI"); //doc.RootElement();// 等同
tinyxml2::XMLElement *pSecond = doc.FirstChildElement("CameraII");
tinyxml2::XMLElement *pThree = doc.FirstChildElement("CameraIII");
// 分别读取每个相机的各个属性
ReadOneCameraAttribute(pFirst);
std::cout << "------------------\n";
ReadOneCameraAttribute(pSecond);
std::cout << "------------------\n";
ReadOneCameraAttribute(pThree);
std::cout << "------------------\n";
return 0;
}
/**
* @brief: 修改相机属性
* @param p 相机节点指针
* @return: 返回说明
* @retval: 返回值说明
*/
static void ModifyOneCamera(tinyxml2::XMLElement *p)
{
int devId = 4;
const char *ipAddr = "139.66.38.13";
const char *subnetMask = "255.0.0.0";
bool exposureAuto = false;
int64_t exposureTime = 80;
bool triggerMode = false;
p->FirstChildElement("DevID")->SetText(devId);
p->FirstChildElement("IpAddress")->SetText(ipAddr);
p->FirstChildElement("SubnetMask")->SetText(subnetMask);
p->FirstChildElement("ExposureAuto")->SetText(exposureAuto);
p->FirstChildElement("ExposureTime")->SetText(exposureTime);
p->FirstChildElement("TriggerMode")->SetText(triggerMode);
}
/**
* @brief: 修改某xml文件的参数
* @param path xml文件路径
* @return: 返回说明
* @retval: 返回值说明
*/
static void ModifyParam(const std::string &path)
{
// 导入文件错误, 退出
tinyxml2::XMLDocument doc;
tinyxml2::XMLError error = doc.LoadFile(path.c_str());
if (error != tinyxml2::XMLError::XML_SUCCESS)
return;
// 三个相机指针
tinyxml2::XMLElement *pFirst = doc.FirstChildElement("CameraI");
tinyxml2::XMLElement *pSecond = doc.FirstChildElement("CameraII");
tinyxml2::XMLElement *pThree = doc.FirstChildElement("CameraIII");
// 修改
ModifyOneCamera(pFirst);
ModifyOneCamera(pSecond);
ModifyOneCamera(pThree);
doc.SaveFile(path.c_str());
}
void testCameraXML()
{
std::string path = "camera_info_1.xml";
std::cout << "---------------生成一个xml文件------------------" << std::endl;
WriteParam(path);
std::cout << "--------------写文件结束，读取生成的xml文件------------------" << std::endl;
ReadParam(path);
std::cout << "--------------读文件结束，修改文件开始------------------" << std::endl;
ModifyParam(path);
std::cout << "--------------修改文件结束，读取修改的xml文件------------------" << std::endl;
ReadParam(path);
}
int main(void)
{
testCameraXML();
return 0;
}