c++ - 在 C++ 中编码/解码 URL

Question

有人知道有什么好的 C++ 代码可以做到这一点吗？

Answer 1

前几天我遇到了这个问题的一半编码。对可用选项不满意，查看 this C sample code 后，我决定推出自己的 C++ url-encode 函数:

#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();
}

decode 函数的实现留给读者作为练习。 :P