字符换分割（正则表达式）＜regex＞-c++

主要使用regex，正则表达式进行，简单好用!

#include <iostream>
#include <vector>
#include <iterator>
#include <regex>

// std::wstring版本
std::vector<std::wstring> ws_split(const std::wstring& in, const std::wstring& delim) {
std::wregex re{ delim };
return std::vector<std::wstring> {
std::wsregex_token_iterator(in.begin(), in.end(), re, -1),
std::wsregex_token_iterator()
};
}
// c string版本
std::vector<std::string> c_split(const char* in, const char* delim) {
std::regex re{ delim };
return std::vector<std::string> {
std::cregex_token_iterator(in, in + strlen(in),re, -1),
std::cregex_token_iterator()
};
}
// 支持wchar_t宽字符集的版本
std::vector<std::wstring> wc_split(const wchar_t* in, const wchar_t* delim) {
std::wregex re{ delim };
return std::vector<std::wstring> {
std::wcregex_token_iterator(in, in + wcslen(in),re, -1),
std::wcregex_token_iterator()
};
}
// 上面的s_split和ws_split可以统一用模板来实现
template<typename E,
typename TR = std::char_traits<E>,
typename AL = std::allocator<E>,
typename _str_type = std::basic_string<E, TR, AL>>
std::vector<_str_type> bs_split(const std::basic_string<E, TR, AL>& in, const std::basic_string<E, TR, AL>& delim) {
std::basic_regex<E> re{ delim };
return std::vector<_str_type> {
std::regex_token_iterator<typename _str_type::const_iterator>(in.begin(), in.end(), re, -1),
std::regex_token_iterator<typename _str_type::const_iterator>()
};
}