c++ 字符串分割函数 stringsplit

新版：

/* stringsplit.hpp sdragonx 2006-06-16 00:43:16 revise 2018/7/28 19:42 function list: size_t stringsplit(container, const char_type*, size_t, char_type, bool) size_t stringsplit(container, const char_type*, size_t, const char_type*, size_t, bool) 这是个模板函数，支持标准库里面的各种容器，和标准字符串。 这次更新，为了平台兼容性，削减到只剩两个核心函数。 测试了3款编译器，编译通过 (gcc7.2.0、c++builder6.0、C++Builder2010) 例如： std::string s = "abc,,123"; std::vector<std::string> ls; stringsplit(ls, s.c_str(), s.length(), ',', true); 如果repeat == true，s就被分割成为3个字符串，第二个字符串是空的 如果repeat == false，s就被分割成2个字符串 支持多个分割符： std::string s = "abc,|123|456"; std::string spliter = ",|"; std::vector<std::string> ls; stringsplit(ls, s.c_str(), s.length(), spliter.c_str(), spliter.size(), true); 也支持其他容器，例如： std::list<std::string> ls; stringsplit(ls, s.c_str(), s.size(), ',', true); std::deque<std::string> ls; stringsplit(ls, s.c_str(), s.size(), ',', true); 基础的两个函数，是以C字符串格式写的，也支持其他类型的字符串， 只要这个字符串有构造函数String(const char*, size_t length)就行 const char* s = "a,b,,c"; std::vector<std::string> ls; stringsplit(ls, s, strlen(s), ',', true);*/ #ifndef STRINGSPLIT_HPP_200606161656#define STRINGSPLIT_HPP_200606161656 #include <algorithm> namespace cgl{ //// size_t stringsplit<char_type>(container, const char_type*, size_t, char_type, bool)//template<typename char_type, class container>size_t stringsplit(    container& ls,    const char_type* str,    size_t size,    char_type spliter,    bool repeat = true){    typedef const char_type* const_iterator;    typedef typename container::value_type string_type;     const_iterator begin = str;    const_iterator end = begin + size;    const_iterator first = begin;    const_iterator second;        for( ; first<end; )    {        second = std::find<const_iterator>(first, end, spliter);        if(first == second){            if(repeat)ls.push_back(string_type());        }        else{            ls.push_back(string_type(first, second - first));        }        first = second+1;    }    if(repeat)    {        if(second == end-1){            ls.push_back(string_type());        }    }    return ls.size();} //// size_t stringsplit<char_type>(container, const char_type*, size_t, const char_type*, size_t, bool)//template<typename char_type, typename container>size_t stringsplit(container& ls,    const char_type* str,    size_t size,    const char_type* spliter,    size_t spliter_size,    bool repeat = true){    typedef typename container::value_type string_type;    typedef const char_type* const_iterator;        const_iterator end = str + size;    const_iterator first = str;    const_iterator second;        for( ; first<end; )    {        second = std::find_first_of<const_iterator>(first, end, spliter, spliter + spliter_size);        if(first == second){            if(repeat)ls.push_back(string_type());        }        else{            ls.push_back(string_type(first, second));        }        first = second+1;    }    if(repeat)    {        if(second == end-1){            ls.push_back(string_type());        }    }    return ls.size();} /*以下扩展函数作为参考有的平台std::iterator是一个类，有点就是char*指针各个平台实现方式不一样，暂时无法统一//// size_t stringsplit<string_type>(container, const_iterator, const_iterator, char_type, bool)//template<typename string_type, typename container>size_t stringsplit(    container& ls,    typename string_type::const_iterator begin,    typename string_type::const_iterator end,    typename string_type::value_type spliter,    bool repeat = true){    return stringsplit(ls, &*begin, end - begin, spliter, repeat);}//// size_t stringsplit<string_type>(container, string_type, char, bool)//template<typename string_type, typename container>size_t stringsplit(    container& ls,    const string_type& str,    typename string_type::value_type spliter,    bool repeat = true){    return stringsplit(ls, str.c_str(), str.size(), spliter, repeat);}//// size_t stringsplit<string_type>(container, const_iterator, const_iterator, const_iterator, const_iterator, bool)//template<typename string_type, typename container>size_t stringsplit(    container& ls,    typename string_type::const_iterator begin,    typename string_type::const_iterator end,    typename string_type::const_iterator spliter_begin,    typename string_type::const_iterator spliter_end,    bool repeat = true){    return stringsplit(ls, &*begin, end - begin, &*spliter_begin, spliter_end - spliter_begin, repeat);}//// size_t stringsplit<string_type>(container, string_type, string_type, bool)//template<typename string_type, typename container>size_t stringsplit(    container& ls,    const string_type& str,    const string_type& spliter,    bool repeat = true){    return stringsplit(ls, str.c_str(), str.size(), spliter.c_str(), spliter.size(), repeat);}*/ }; // end namespace cgl; #endif //STRINGSPLIT_HPP_200606161656

以前的旧版：

/* stringsplit.hpp sdragonx 2006-06-16 00:43:16 revise  2016.07.18 19:04*/ #ifndef STRINGSPLIT_HPP_200606161656#define STRINGSPLIT_HPP_200606161656 #include <algorithm> namespace cgl{ template<typename char_type, template<typename> class string_type, template<typename> class container>size_t stringsplit(    container< string_type<char_type> >& ls,    typename string_type<char_type>::const_iterator begin,    typename string_type<char_type>::const_iterator end,    char_type spliter,    bool repeat = true){    if(end <= begin)    {        return 0;    }     typename string_type<char_type>::const_iterator first = begin;    typename string_type<char_type>::const_iterator second;        for( ; first<end; )    {        second = std::find<string_type<char_type>::const_iterator>(first, end, spliter);        if(first == second){            if(repeat)ls.push_back(string_type<char_type>());        }        else{            ls.push_back(string_type<char_type>(first, second));        }        first = second+1;    }    if(repeat)    {        if(second == end-1){            ls.push_back(string_type<char_type>());        }    }    return ls.size();} template<typename char_type, template<typename> class string_type, template<typename> class container>size_t stringsplit(    container< string_type<char_type> >& ls,    typename string_type<char_type>::const_iterator begin,    typename string_type<char_type>::const_iterator end,    typename string_type<char_type>::const_iterator spliter_begin,    typename string_type<char_type>::const_iterator spliter_end,    bool repeat = true){    if(end <= begin || spliter_end<=spliter_begin)    {        return 0;    }     typename string_type<char_type>::const_iterator first = begin;    typename string_type<char_type>::const_iterator second;        for( ; first<end; )    {        second = std::find_first_of<string_type<char_type>::const_iterator>(first, end, spliter_begin, spliter_end);        if(first == second){            if(repeat)ls.push_back(string_type<char_type>());        }        else{            ls.push_back(string_type<char_type>(first, second));        }        first = second+1;    }    if(repeat)    {        if(second == end-1){            ls.push_back(string_type<char_type>());        }    }    return ls.size();} template<typename char_type, template<typename> class string_type, template<typename> class container>size_t stringsplit(container< string_type<char_type> > &strs,    const string_type<char_type>& str, char_type spliter, bool repeat = true){    return stringsplit(strs, str.begin(), str.end(), spliter, repeat);} template<typename char_type, template<typename> class string_type, template<typename> class container>size_t stringsplit(container< string_type<char_type> > &strs,    const char_type* str, size_t length, char_type spliter, bool repeat = true){    return stringsplit(strs, str, str+length, spliter, repeat);} template<typename char_type, template<typename> class string_type, template<typename> class container>size_t stringsplit(container< string_type<char_type> > &strs,    const string_type<char_type>& str, const string_type<char_type>& spliter, bool repeat = true){    return stringsplit(strs, str.begin(), str.end(), spliter.begin(), spliter.end(), repeat);} template<typename char_type, template<typename> class string_type, template<typename> class container>size_t stringsplit(container< string_type<char_type> > &strs,    const char_type* str, size_t length, const char_type* spliter, size_t splength, bool repeat = true){    return stringsplit(strs, str, str+length, spliter, spliter+splength, repeat);} }; // end namespace cgl; #endif //STRINGSPLIT_HPP_200606161656

文章发布于 于 2017-02-04 07:36:37 CSDN，现转博客园。