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[c++ string startswith / endswith]
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| // | |
| bool starts_with(const std::string & str, const std::string & sub, bool ignore_case=false) | |
| { | |
| int str_len = str.size(); | |
| int sub_len = sub.size(); | |
| if (str_len < sub_len) return false; | |
| if (ignore_case) | |
| { | |
| return std::equal(sub.begin(), sub.end(), | |
| str.begin(), [](char a, char b) {return std::tolower(a) == std::tolower(b); }); | |
| } | |
| return str.compare(0, sub_len, sub) == 0; | |
| } | |
| // | |
| bool ends_with(const std::string& str, const std::string& sub, bool ignore_case = false) | |
| { | |
| int str_len = str.size(); | |
| int sub_len = sub.size(); | |
| if (str_len < sub_len) return false; | |
| if (ignore_case) | |
| { | |
| return std::equal(sub.begin(), sub.end(), | |
| str.begin() + str_len - sub_len, [](char a, char b) {return std::tolower(a) == std::tolower(b); }); | |
| } | |
| return str.compare(str_len - sub_len, sub_len, sub) == 0; | |
| } |
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Its works flawlessly. Thanks!