在C ++中编码/解码网址 [英] Encode/Decode URLs in C++

问题描述

有人知道任何好的C ++代码吗？

Does anyone know of any good C++ code that does this?

推荐答案

天。对可用的选项不满意，看了一下这个C示例代码后，我决定滚动我自己的C ++ url-编码函数：

I faced the encoding half of this problem the other day. Unhappy with the available options, and after taking a look at this C sample code, i decided to roll my own C++ url-encode function:

#include <cctype>
#include <iomanip>
#include <sstream>
#include <string>

using namespace std;

string url_encode(const string &value) {
    ostringstream escaped;
    escaped.fill('0');
    escaped << hex;

    for (string::const_iterator i = value.begin(), n = value.end(); i != n; ++i) {
        string::value_type c = (*i);

        // Keep alphanumeric and other accepted characters intact
        if (isalnum(c) || c == '-' || c == '_' || c == '.' || c == '~') {
            escaped << c;
            continue;
        }

        // Any other characters are percent-encoded
        escaped << uppercase;
        escaped << '%' << setw(2) << int((unsigned char) c);
        escaped << nouppercase;
    }

    return escaped.str();
}

解码功能的实现作为练习留给读者。 ：P

The implementation of the decode function is left as an exercise to the reader. :P

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