android上让我放弃使用wstring来操作中英文字符串 转

vector<string> toVectorCharacters(const string& $str, int $characterWidth) {
int size = $str.size();
vector<string> result;
FOR_LOOP(size, i){
char c = $str[i];
if (c <= 127 && c >= 0) {
string asciiChar($str.begin() + i, $str.begin() + i + 1);
result.push_back(asciiChar);
} else {
string utf8char($str.begin() + i, $str.begin() + i + $characterWidth);
result.push_back(utf8char);
i += $characterWidth - 1;
}
}

return result;
}