VC6微软正则表达式greta使用案例

#include <string>

#include "regexpr2.h"

using namespace std;

using namespace regex;//greta库的命名空间

//若链接出错,设置MFC静态链接

//查找匹配串

//返回结果匹配串(CStringArray数组指针类型)

CStringArray* Find(LPCTSTR m_reg,LPCTSTR m_source,REGEX_FLAGS dwStyle = NOCASE | MULTILINE)

{

CStringArray* strArray = new CStringArray();

REGEX_FLAGS dw = GLOBAL | ALLBACKREFS | dwStyle;

rpattern reg(m_reg, dw);

match_results results;

match_results::backref_type bt = reg.match(m_source, results);

int iGroups = reg.cgroups();

int nCount = 0;

if(bt.matched)

{

for(int i=0; i<results.cbackrefs(); i++)

{

if(i%iGroups == 0)

{

nCount++;

strArray->Add(results.backref(i).str().c_str());

}

}

}

return strArray;

}

//查找匹配串

//返回结果匹配串(CStringArray数组指针类型)

CStringArray* Find2(LPCTSTR m_reg,LPCTSTR m_source,REGEX_FLAGS dwStyle = NOCASE | MULTILINE)

{

CStringArray* strArray = new CStringArray();

REGEX_FLAGS dw = GLOBAL | ALLBACKREFS | dwStyle;

rpattern reg(m_reg, dw);

match_results results;

match_results::backref_type bt = reg.match(m_source, results);

if(bt.matched)

{

match_results::backref_vector vec = results.all_backrefs();

match_results::backref_vector::iterator iter;

for(iter = vec.begin(); iter != vec.end(); iter++)

{

string str = (*iter).str();

strArray->Add(str.c_str());

}

}

return strArray;

}

//使用实例

CStringArray* str = Find(m_reg, m_source);

for(int i=0; i< str->GetSize(); i++)

{

AfxMessageBox((*str)[i]);

}

//替换匹配串

//返回结果替换后字符串(CString类型)

CString Sub(LPCTSTR m_reg,LPCTSTR m_sub, LPCTSTR m_source,REGEX_FLAGS dwStyle = NOCASE | MULTILINE)

{

CString lpSub;

REGEX_FLAGS dw = GLOBAL | ALLBACKREFS | dwStyle;

rpattern reg(m_reg, m_sub, dw);

subst_results results;

string str(m_source);

int nCount = reg.substitute(str, results);

lpSub = str.c_str();

return lpSub;

}

//使用实例

CString str = Sub(m_reg, m_sub, m_source);

AfxMessageBox(str);

//分割串

//返回结果分割后子串(CStringArray数组类型)

CStringArray* Split(LPCTSTR m_reg, LPCTSTR m_source,REGEX_FLAGS dwStyle = NOCASE | MULTILINE)

{

CStringArray* strArray = new CStringArray();

REGEX_FLAGS dw = GLOBAL | ALLBACKREFS | dwStyle;

rpattern reg(m_reg, dw);

split_results results;

string str(m_source);

int nCount = reg.split(str, results);

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

{

string split = results[i];

strArray->Add(split.c_str());

}

return strArray;

}

//使用实例

CStringArray* str = Split(m_reg, m_source);

for(int i=0; i<str->GetSize(); i++)

{

AfxMessageBox((*str)[i]);

}