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自己花了一個通宵寫的XML讀寫類

*XMLFile.h

#ifndef XMLFILE_H_H

#define XMLFILE_H_H

* 實現類似xml的簡單文件存儲格式

* 處理的文件必須格式完全正確

#include <fstream>

#include <string>

using namespace std;

class CXMLFileAttribute

{

public:

string mName;

string mValue;

CXMLFileAttribute* mNextAttribute;

public:

CXMLFileAttribute(){mNextAttribute = NULL;}

CXMLFileAttribute* GetNextAttri(){return mNextAttribute;}

//解析

char* GetNameInfoFromChars(char* p);

char* GetValueInfoFromChars(char* p);

char* GetAttriInfoFromChars(char* p);

//取值

void SaveFile(ofstream *file);

};

class CXMLFileNode

{

public:

CXMLFileNode* mParent;

CXMLFileNode* mFirstChild;

CXMLFileNode* mNextSibling;

string mValue;

string mSign;

CXMLFileAttribute* mAttribute;

public:

char* GetValue();

char* GetName();

CXMLFileNode();

CXMLFileNode* GetNextSibling(){return mNextSibling;}

CXMLFileNode* GetLastChild();

CXMLFileAttribute* GetLastAttri();

//解析

char* GetSignFromChars(char* p);

char* GetValueFromChars(char* p);

char* GetAttriFromChars(char* p);

char* GetNodeInfoFromChars(char* p);

char* GetChildrenInfoFromChars(char* p);

//~解析

void SaveFile(ofstream *file ,int depth);

};

class CXMLFile

{

public:

CXMLFileNode* mRootNode;

char* mData;

public:

void ReadFile(char* filename);

void SaveFile(char* filename);

};

#endif

*XMLFile.cpp

#include "XMLFile.h"

char* SkipWhiteSpace(char* p)

{

if ( !p || !*p )

return 0;

while ( *p && *p == ' '|| *p == '\n' || *p =='\r' || *p =='\t' || *p<0 )

++p;

while(!*p)

++p;

return p;

}

char* CXMLFileAttribute::GetNameInfoFromChars(char* p)

{

p = SkipWhiteSpace( p );

if ( !p || !*p )

return 0;

while (p && *p && *p!= '=')

{

mName.push_back( *p);

p++;

}

return p;

}

char* CXMLFileAttribute::GetValueInfoFromChars(char* p)

{

p = SkipWhiteSpace( p);

if ( !p || !*p )

return 0;

p++; //跳過 =

p++;//跳過 “

while (p && *p && *p!='"')

{

mValue.push_back( *p);

p++;

}

p++; //跳過 ”

return p;

}

char* CXMLFileAttribute::GetAttriInfoFromChars(char* p)

{

p = SkipWhiteSpace( p);

if ( !p || !*p )

return 0;

p = GetNameInfoFromChars(p);

p = GetValueInfoFromChars(p);

return p;

}

void CXMLFileAttribute::SaveFile(ofstream* file)

{

*file<<mName<< "="<< "\""<<mValue<<"\"";

}

//CXMLFileNode

CXMLFileNode::CXMLFileNode()

{

mSign.clear();

mValue.clear();

mParent = NULL;

mAttribute = NULL;

mFirstChild = NULL;

mNextSibling = NULL;

}

CXMLFileNode* CXMLFileNode::GetLastChild()

{

CXMLFileNode* node = mFirstChild;

while(node && node->GetNextSibling())

node = node->GetNextSibling();

return node;

}

char* CXMLFileNode::GetSignFromChars(char* p)

{

p = SkipWhiteSpace( p);

p++;//越過‘<’

if ( !p || !*p )

return 0;

while (p && *p && *p!='>' && *p != ' ' )

{

mSign.push_back( *p);

p++;

}

return p;

}

char* CXMLFileNode::GetValueFromChars(char* p)

{

p = SkipWhiteSpace( p);

if ( !p || !*p )

return 0;

p++; //跳過 >

if ( !p || !*p )

return 0;

p = SkipWhiteSpace( p);

while (p && *p && *p!='<')

{

mValue.push_back( *p );

p++;

}

return p;

}

char* CXMLFileNode::GetAttriFromChars(char* p)

{

p = SkipWhiteSpace( p);

if ( !p || !*p )

return 0;

if(*p == '>' )

return p;

CXMLFileAttribute* attri;

while(*p !='>')

{

if(!mAttribute)

{

mAttribute = new CXMLFileAttribute();

p = mAttribute->GetAttriInfoFromChars(p);

}

else

{

attri =mAttribute;

while(attri && attri->GetNextAttri())

attri = attri->GetNextAttri();

attri->mNextAttribute = new CXMLFileAttribute();

p = attri->mNextAttribute->GetAttriInfoFromChars(p);

}

p = SkipWhiteSpace( p);

if ( !p || !*p )

return 0;

}

return p;

}

char* CXMLFileNode::GetNodeInfoFromChars(char* p)

{

p = GetSignFromChars(p);

p = GetAttriFromChars(p);

p = GetValueFromChars(p);

p = SkipWhiteSpace( p);

if ( !p || !*p )

return 0;

char* p1 = p;

CXMLFileNode* node = this;

if(*p1 == '<' && *(++p1) == '/' )

{

while(*p == '<' && *p1 == '/' )

{

while(*p != '>')

p++;

p = SkipWhiteSpace(p);

p++;//越過>

p =SkipWhiteSpace(p);

if ( !p || !*p )

return 0;

node = node->mParent;

p1 = p + 1;

}

CXMLFileNode* nodeBrothor = node;

node = node->mFirstChild;

while(node && node->mNextSibling)

node = node->mNextSibling;

p = SkipWhiteSpace(p);

if ( !p || !*p )

return 0;

node->mNextSibling = new CXMLFileNode();

node->mNextSibling->mParent = nodeBrothor;

return node->mNextSibling->GetNodeInfoFromChars(p);

}

else

{

while(*p != '<')

p++;

p = GetChildrenInfoFromChars(p);

}

return p;

}

char* CXMLFileNode::GetChildrenInfoFromChars(char* p)

{

mFirstChild = new CXMLFileNode();

mFirstChild->mParent = this;

return mFirstChild->GetNodeInfoFromChars(p);

}

void CXMLFileNode::SaveFile(ofstream* file ,int depth)

{

int i;

for ( i=0; i<depth; i++ )

*file<<" ";

*file<<"<"<<mSign.c_str();

CXMLFileAttribute* attrib;

for ( attrib = mAttribute; attrib; attrib = attrib->GetNextAttri())

{

*file<< " ";

attrib->SaveFile( file);

}

*file<< ">";

*file<<mValue.c_str();

if(mFirstChild)

*file<< "\n";

for ( CXMLFileNode* chileNnode = mFirstChild; chileNnode; chileNnode=chileNnode->mNextSibling)

{

chileNnode->SaveFile(file, depth+1 );

if(chileNnode->mNextSibling)

*file<<"\n";

}

if(mFirstChild)

{

*file<<"\n";

for( i=0; i<depth; ++i )

*file<<" ";

*file<< "</"<<mSign.c_str()<< ">";

}

else

{

*file<< "</"<<mSign.c_str()<< ">";

}

//CXMLFile

void CXMLFile::ReadFile(char* filename)

{

ifstream file(filename,ifstream::binary);

long length = 0;

length = file.tellg();

file.seekg(0,ios::end);

length = file.tellg();

if ( length <= 0 )

return;

mData = new char[ length+1 ];

file.seekg( 0, ios::beg );

file.read( mData, length);

mData[length] = 0;

mRootNode = new CXMLFileNode();

mRootNode->GetNodeInfoFromChars(mData);

}

void CXMLFile::SaveFile(char* filename)

{

ofstream file(filename);

mRootNode->SaveFile( &file, 0 );

}

posted on 2009-03-02 06:52 Arcadia-er 閱讀(250) 評論(0) 編輯收藏引用

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自己花了一個通宵寫的XML讀寫類