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();
        URL(const String&);

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

    private:
        void _parse(String);
};

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

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

void URL::_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;
    }

}