source: imaps-frontend/node_modules/relateurl/lib/parse/urlstring.js

"use strict";

var _parseUrl = require("url").parse;



/*
        Customize the URL object that Node generates
        because:
        
        * necessary data for later
        * urlObj.host is useless
        * urlObj.hostname is too long
        * urlObj.path is useless
        * urlObj.pathname is too long
        * urlObj.protocol is inaccurate; should be called "scheme"
        * urlObj.search is mostly useless
*/
function clean(urlObj)
{
        var scheme = urlObj.protocol;
        
        if (scheme)
        {
                // Remove ":" suffix
                if (scheme.indexOf(":") === scheme.length-1)
                {
                        scheme = scheme.substr(0, scheme.length-1);
                }
        }
        
        urlObj.host =
        {
                // TODO :: unescape(encodeURIComponent(s)) ? ... http://ecmanaut.blogspot.ca/2006/07/encoding-decoding-utf8-in-javascript.html
                full: urlObj.hostname,
                stripped: null
        };
        
        urlObj.path =
        {
                absolute:
                {
                        array: null,
                        string: urlObj.pathname
                },
                relative:
                {
                        array: null,
                        string: null
                }
        };
        
        urlObj.query =
        {
                object: urlObj.query,
                string:
                {
                        full: null,
                        stripped: null
                }
        };
        
        urlObj.extra =
        {
                hrefInfo:
                {
                        minimumPathOnly: null,
                        minimumResourceOnly: null,
                        minimumQueryOnly: null,
                        minimumHashOnly: null,
                        empty: null,
                        
                        separatorOnlyQuery: urlObj.search==="?"
                },
                portIsDefault: null,
                relation:
                {
                        maximumScheme: null,
                        maximumAuth: null,
                        maximumHost: null,
                        maximumPort: null,
                        maximumPath: null,
                        maximumResource: null,
                        maximumQuery: null,
                        maximumHash: null,
                        
                        minimumScheme: null,
                        minimumAuth: null,
                        minimumHost: null,
                        minimumPort: null,
                        minimumPath: null,
                        minimumResource: null,
                        minimumQuery: null,
                        minimumHash: null,
                        
                        overridesQuery: null
                },
                resourceIsIndex: null,
                slashes: urlObj.slashes
        };
        
        urlObj.resource = null;
        urlObj.scheme = scheme;
        delete urlObj.hostname;
        delete urlObj.pathname;
        delete urlObj.protocol;
        delete urlObj.search;
        delete urlObj.slashes;
        
        return urlObj;
}



function validScheme(url, options)
{
        var valid = true;
        
        options.rejectedSchemes.every( function(rejectedScheme)
        {
                valid = !(url.indexOf(rejectedScheme+":") === 0);
                
                // Break loop
                return valid;
        });
        
        return valid;
}



function parseUrlString(url, options)
{
        if ( validScheme(url,options) )
        {
                return clean( _parseUrl(url, true, options.slashesDenoteHost) );
        }
        else
        {
                return {href:url, valid:false};
        }
}



module.exports = parseUrlString;