mhsw-espurna/code/espurna/libs/URL.h

// -----------------------------------------------------------------------------
// Parse char string as URL
//
// Adapted from HTTPClient::beginInternal()
// https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266HTTPClient/src/ESP8266HTTPClient.cpp
//
// -----------------------------------------------------------------------------

#pragma once

class URL {
    public:

    URL() :
        protocol(),
        host(),
        path(),
        port(0)
    {}

    URL(const String& string) {
        _parse(string);
    }

    String protocol;
    String host;
    String path;
    uint16_t port;

    private:

    void _parse(String buffer) {
        // cut the protocol part
        int index = buffer.indexOf("://");
        if (index > 0) {
            this->protocol = buffer.substring(0, index);
            buffer.remove(0, (index + 3));
        }

        if (this->protocol == "http") {
            this->port = 80;
        } else if (this->protocol == "https") {
            this->port = 443;
        }

        // cut the host part
        String _host;

        index = buffer.indexOf('/');
        if (index >= 0) {
            _host = buffer.substring(0, index);
        } else {
            _host = buffer;
        }

        // store the remaining part as path
        if (index >= 0) {
            buffer.remove(0, index);
            this->path = buffer;
        } else {
            this->path = "/";
        }

        // separate host from port, when present
        index = _host.indexOf(':');
        if (index >= 0) {
            this->port = _host.substring(index + 1).toInt();
            this->host = _host.substring(0, index);
        } else {
            this->host = _host;
        }
    }

};