白云岛资源网 Design By www.pvray.com

 Linux 下读XML 的类详解及实现代码

在Linux下写程序,常需要读一些配置文件。现有的XML工具很多,可以方便的编辑和生成XML。

但VC中用的XML解析器在Linux下不能用。只好自已写了个。用了一下,还不错。

 #include <stdio.h>
#include <stdlib.h>


// ********************************************************************** //
// XML解析类(honghaier写于2008-11-19)
// ********************************************************************** //


struct SXMLAttrib
{
 char mKeyName[100]; //键名
 char mValue[100]; //键值
}
;

 


struct SXMLFrame
{
public:
 char mFrameName[100]; //帧名
 int  mAttrNum;  //属性数量
 SXMLAttrib* mAttrArray;  //属性数组

 SXMLFrame* mpSiblFrame; //兄弟结点
 SXMLFrame* mpChiFrame;  //子结点
 SXMLFrame* mpParentFrame; //父结点
public:

 SXMLFrame();
 ~SXMLFrame();

 void Release_Depath();

 SXMLFrame* GetFrame_Depth(char *szFrameName);

 int  GetChildNum();
 SXMLFrame* GetChildFrame(int Index);
 SXMLFrame* GetChildFrame(char *szFrameName);
 SXMLFrame* GetSiblFrame();
 SXMLFrame* GetParentFrame();
 SXMLAttrib* GetAttrib(char *szKeyName);
 


 bool ParseAttrString(char *szXMLString);
}
;
class CXMLFile
{
 SXMLFrame mRoot;
 SXMLFrame* mpCurrentFrame;
 bool mbDepthClose; //闭合
private:
 bool ParseFrameString(char *szXMLString);

public:
 int pFile;

 CXMLFile();
 ~CXMLFile();
 void Close();
 void Release();
 bool Open( const char * pFileName);
 
 SXMLFrame* GetRoot();
 SXMLFrame* GetFrame_Depth(char *szFrameName);
 
}
;

 

//====================================================


SXMLFrame::SXMLFrame()
{
 memset(mFrameName,0,sizeof(mFrameName));
 mAttrNum = 0;
 mAttrArray = NULL;
 mpSiblFrame = NULL;
 mpChiFrame = NULL;
 mpParentFrame = NULL;
}
SXMLFrame::~SXMLFrame()
{
 Release_Depath();
}

void SXMLFrame::Release_Depath()
{
 if(mAttrNum > 0)
 {
 if(mAttrArray)
 {
  delete[] mAttrArray;
  mAttrArray = NULL; 
 }
 mAttrNum = 0;
 }
 if(mpChiFrame)
 {
 mpChiFrame->Release_Depath();
 delete mpChiFrame;
 mpChiFrame = NULL;
 }
 if(mpSiblFrame)
 {
 mpSiblFrame->Release_Depath();
 delete mpSiblFrame;
 mpSiblFrame = NULL;
 }
}

SXMLFrame* SXMLFrame::GetFrame_Depth(char *szFrameName)
{
 if(strcmp(mFrameName,szFrameName)==0)
 {
 return this;
 }
 if(mpChiFrame)
 {
 SXMLFrame* tResFrame = mpChiFrame->GetFrame_Depth(szFrameName);
 if(tResFrame)return tResFrame;
 }
 if(mpSiblFrame)
 {
 SXMLFrame* tResFrame = mpSiblFrame->GetFrame_Depth(szFrameName);
 if(tResFrame)return tResFrame;
 }

 return NULL;
}
int SXMLFrame::GetChildNum()
{
 int count = 0;
 for(SXMLFrame *temp = mpChiFrame ; temp != NULL ;temp = temp->mpSiblFrame)
 {
 count++;
 }
 return count;
}

SXMLFrame* SXMLFrame::GetChildFrame(int Index)
{
 int count = 0;
 for(SXMLFrame *temp = mpChiFrame ; temp != NULL ;temp = temp->mpSiblFrame)
 {
 if(count == Index)return temp;
 count++;
 } 
 return NULL;
}

SXMLFrame* SXMLFrame::GetChildFrame(char *szFrameName)
{
 for(SXMLFrame *temp = mpChiFrame ; temp != NULL ;temp = temp->mpSiblFrame)
 {
 if(strcmp(temp->mFrameName,szFrameName)==0)
 {
  return temp;
 }
 }
 return NULL;
}

SXMLFrame* SXMLFrame::GetSiblFrame()
{
 return mpSiblFrame;
}

SXMLFrame* SXMLFrame::GetParentFrame()
{
 return mpParentFrame;
}

SXMLAttrib* SXMLFrame::GetAttrib(char *szKeyName)
{
 for(int i = 0 ; i < mAttrNum ; i++)
 {
 if(strcmp(mAttrArray[i].mKeyName,szKeyName)==0)
 {
  return &mAttrArray[i];
 }
 }
 return NULL;
}

bool SXMLFrame::ParseAttrString(char *szXMLString)
{
 SXMLAttrib AttribArray[100];
 int len = strlen(szXMLString);
 mAttrNum = 0;
 int StrPos = 0;
 bool HaveFrameName = false;
 for(int i = 0 ;i < len ; i++)
 {
 if(i==(len-1))
 {
  if(false == HaveFrameName)
  {
  memcpy(mFrameName,szXMLString,len);
  mFrameName[len]='/0';
  HaveFrameName = true;
  }
  else
  {
  if(( len - StrPos-1 )== 0)
  {
   memset(AttribArray[mAttrNum].mValue,0,sizeof(AttribArray[mAttrNum].mValue));
  }
  else
  {
   memcpy(AttribArray[mAttrNum].mValue,szXMLString+StrPos,len-StrPos-1);
   AttribArray[mAttrNum].mValue[len-StrPos-1]='/0';
  }
  mAttrNum++;
  StrPos = 0;
  }
  break;
 }
 if(szXMLString[i] == ' '&&szXMLString[i-1] == ' ')
 {
  StrPos = i+1;
  continue;
 }
 if(szXMLString[i] == ' ')
 {
  if(false == HaveFrameName)
  {
  memcpy(mFrameName,szXMLString,i);
  mFrameName[i]='/0';
  HaveFrameName = true;
  StrPos = i+1;
  continue;
  }
  else
  {
  if(( i - StrPos-1 )== 0)
  {
   memset(AttribArray[mAttrNum].mValue,0,sizeof(AttribArray[mAttrNum].mValue));
  }
  else
  {
   memcpy(AttribArray[mAttrNum].mValue,szXMLString+StrPos,i-StrPos-1);
   AttribArray[mAttrNum].mValue[i-StrPos-1]='/0';
  }
  mAttrNum++;
  StrPos = i+1;
  continue; 
  }
 }

 if(szXMLString[i] == '=')
 {
  memcpy(AttribArray[mAttrNum].mKeyName,szXMLString+StrPos,i-StrPos);
  AttribArray[mAttrNum].mKeyName[i-StrPos]='/0';
  i++;//跳过一个"""
  StrPos = i+1;
  continue;
 }

 }

 mAttrArray = new SXMLAttrib[mAttrNum];
 if(!mAttrArray)return false;
 memcpy(mAttrArray,AttribArray,mAttrNum*sizeof(SXMLAttrib));
 return true;
}

CXMLFile::CXMLFile()
{
 pFile = 0;
 mpCurrentFrame = NULL;
 mbDepthClose = false;
}

CXMLFile::~CXMLFile()
{
 Close();
}

void CXMLFile::Close()
{
 if( pFile>0)
 {
 int error = close( pFile);
 if( error!=0)
 {
  perror("close file failed");
 }else
 {
  pFile=-1;
 }
 Release();
 }
}
void CXMLFile::Release()
{
 mRoot.Release_Depath();
}

bool CXMLFile::Open( const char * pFileName)
{
 pFile =0;
 pFile = open( pFileName,O_RDONLY);
 if( pFile==-1)
 {
 perror(pFileName);
 return false;
 }

 int num = 0;
 char buffer;

 bool bReadXMLString = false;
 int XMLStringNum = 0;
 char XMLString[1024];
 while(num = read(pFile,&buffer,1)>0)
 {
 if(buffer =='<')
 {
  bReadXMLString = true;
  XMLStringNum = 0;
  continue;
 }
 if(buffer == '>')
 {
  XMLString[XMLStringNum]='/0';
  if( false == ParseFrameString(XMLString))
  {
  printf("Read XML error: %s /n",XMLString);
  return false;
  }
  
  bReadXMLString = false;

  continue;
 }
 if(true == bReadXMLString)
 {
  XMLString[XMLStringNum++] = buffer;
 }

 }

 mpCurrentFrame = NULL;
 mbDepthClose = true;
 return true;
}

SXMLFrame* CXMLFile::GetRoot()
{
 return &mRoot;
}

SXMLFrame* CXMLFile::GetFrame_Depth(char *szFrameName)
{
 return mRoot.GetFrame_Depth(szFrameName);
}

bool CXMLFile::ParseFrameString(char *szXMLString)
{
 if(szXMLString[0] == '"htmlcode">
 

<"1.0" encoding="UTF-8"?>
<!-- edited with XML Explorer v2.0 by Mergesoft (www.mergesoft.com)-->
<root>
 <Honghaier Name="红孩儿" Age="26"></Honghaier>
</root>

 

 

在C++代码中

可以这样使用

CXMLFile  xmlfile;

xmlfile.Open("1.xml");

SXMLFrame* mRootFrame = CXMLFile::GetRoot();

int ChildNum = mRootFrame ->GetChildNum();

 

for(int i = 0 ; i < ChildNum ; i++)

{

     SXMLFrame* tChileFrame = mRootFrame ->GetChildFrame (i);

    SXMLAttrib* tAttrib = tChileFrame->GetAttrib("Age");

    print("%s : %s= %s /n",mChileFrame ->mFrameName,tAttrib->mKeyName,tAttrib->mValue);

}

 感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

白云岛资源网 Design By www.pvray.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
白云岛资源网 Design By www.pvray.com

稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!

昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。

这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。

而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?