C++ UrlEncode UrlDecode

来源：互联网发布：docker搭建java web 编辑：程序博客网时间：2024/06/06 01:17

占位，看到一个代码c++写的urlEncode和UrlDecode和写法，刚好用到，好记性不如烂笔头啊

namespace Utility {    std::string charToHex(unsigned char c) {        short i = c;        std::stringstream s;        s << "%" << std::setw(2) << std::setfill('0') << std::hex << i;        return s.str();    }    unsigned char hexToChar(const std::string &str) {        short c = 0;        if(!str.empty()) {            std::istringstream in(str);            in >> std::hex >> c;            if(in.fail()) {                throw std::runtime_error("stream decode failure");            }        }        return static_cast<unsigned char>(c);    }    std::string urlEncode(const std::string &toEncode) {        std::ostringstream out;        for(std::string::size_type i = 0, len = toEncode.length(); i < len; ++i) {            short t = toEncode.at(i);            if(                t == 45 ||          // hyphen                (t >= 48 && t <= 57) ||       // 0-9                (t >= 65 && t <= 90) ||       // A-Z                t == 95 ||          // underscore                (t >= 97 && t <= 122) ||  // a-z                t == 126            // tilde            ) {                out << toEncode.at(i);            } else {                out << charToHex(toEncode.at(i));            }        }        return out.str();    }    std::string urlDecode(const std::string &toDecode) {        std::ostringstream out;        for(std::string::size_type i = 0, len = toDecode.length(); i < len; ++i) {            if(toDecode.at(i) == '%') {                std::string str(toDecode.substr(i+1, 2));                out << hexToChar(str);                i += 2;            } else {                out << toDecode.at(i);            }        }        return out.str();    }}

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