boost之regex使用范例

#include <regex>

#include <list> 

 对wchar_t*字符串的search调用方法：

boost::wcmatch match;

boost::wregex reg(L"\\d{3}你");

boost::regex_search(L"345你好啊!", match, reg);

bool mt0 = match[0].matched;

bool mt1 = match[1].matched;

bool mt2 = match[2].matched;

int ln = match.length();

 对std::wstring调用search方法

boost::wsmatch match;

std::wstring str(L"1、运行IVM解器安装程序\

ivmdecoder1.7.1.cn.exe\

2、直接使用鼠标左键双击ivm视频文件即可观看");

boost::wregex reg(L"\\w+(\\d\\.\\d\\.\\d)(\\.\\w+\\.\\w+)");

boost::regex_search(str, match, reg);

int match_size = match.size();

bool mt0 = match[0].matched;

bool mt1 = match[1].matched;

bool mt2 = match[2].matched;

bool mt3 = match[3].matched;

int ln = match.length();

std::wstring s1 = match[0];

std::wstring s2 = match[1];

std::wstring s3 = match[2];

std::wstring s4 = match[3]; 

 因为表达式里有两个分组，所以加上整个字符串共有3个match

 最后一个也就是match[3]是没有值的

 对std::wstring调用match方法：

boost::wsmatch match;

boost::wregex reg(L"[^\\d]+(\\d{4})[^\\d]+");

std::wstring ws(L"大家4578好,哈哈!");

bool match_status = boost::regex_match(ws, match, reg);

if (match_status) {

} 

对std::wstring 调用replace方法

boost::wregex reg(L"\\d{3}你",

boost::wregex::icase|boost::wregex::perl);

std::wstring str(L"345你好啊!");

 str=boost::regex_replace(str, reg, L"不"); 

对std::wstring调用split方法，得到多个std::wstring

std::wstring ws1;

std::list<std::wstring> list;

boost::wregex e(L"；|\\|",

             boost::regex::normal | boost::regbase::icase);

std::wstring str = L"你好；他好；我好；哈哈|来吧";

boost::regex_split(std::back_inserter(list), str, e);

std::wstring s;

while(list.size())

{

s = *(list.begin());

list.pop_front();

//cout << s << endl;

}