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Video Url Parser

urlParser to get extract information like provider, videoId and other from urls

Version vom 22.10.2014. Aktuellste Version

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/2859/22275/Video%20Url%20Parser.js 

// ==UserScript==
// @name           Video Url Parser
// @namespace      Zod-
// @description    urlParser to get extract information like provider, videoId and other from urls
// @source         https://github.com/Zod-/jsVideoUrlParser
// @copyright      Julian Hangstörfer
// @version        0.2
// @license        GPL 3
// ==/UserScript==

window.urlParser = (function () {
    "use strict";
    var plugins = {};

    return {
        'parse': function (url) {
            var match = url.match(/(https?:\/\/)?([^\.]+\.)?(\w+)\./i),
                provider = match ? match[3] : undefined,
                result,
                createdUrl;
            if (match && provider && plugins[provider]) {
                result = plugins[provider].parse.call(this, url);
                if (result) {
                    result.provider = plugins[provider].provider;
                    return result;
                }
            }
            return undefined;
        },
        'bind': function (plugin) {
            plugins[plugin.provider] = plugin;
            if (plugin.alternatives) {
                var i;
                for (i = 0; i < plugin.alternatives.length; i += 1) {
                    plugins[plugin.alternatives[i]] = plugin;
                }
            }
        },
        'create': function (videoInfo) {
            if (plugins[videoInfo.provider].create) {
                return plugins[videoInfo.provider].create.call(this, videoInfo);
            }
            return undefined;
        }
    };
}());
//parses strings like 1h30m20s to seconds
window.getTime = function(timestring) {
    "use strict";
    var totalSeconds = 0,
        currentValue = 0,
        i,
        timeValues = {
            's': 1,
            'm': 1 * 60,
            'h': 1 * 60 * 60,
            'd': 1 * 60 * 60 * 24,
            'w': 1 * 60 * 60 * 24 * 7
        };

    //is the format 1h30m20s etc
    if (!timestring.match(/^(\d+[smhdw]?)+$/)) {
        return 0;
    }

    for (i = 0; i < timestring.length; i += 1) {
        if (timestring[i] >= '0' && timestring[i] <= '9') {
            //parse the string to decimal
            currentValue = 10 * currentValue + parseInt(timestring[i], 10);
        } else if (timestring[i] in timeValues) {
            //convert to seconds and delete the entry so there can only be one of this element e.g no 20s20s
            totalSeconds += timeValues[timestring[i]] * currentValue;
            delete timeValues[timestring[i]];
            currentValue = 0;
        } else {
            //discard the value if the format doesn't fit the others
            currentValue = 0;
        }
    }
    //if the last string was just numbers and the s tag hasn't been used before then add it as seconds
    if (currentValue !== 0 && 's' in timeValues) {
        totalSeconds += currentValue;
        delete timeValues.s;
    }
    return totalSeconds;
}
//http://joquery.com/2012/string-format-for-javascript
if (typeof String.prototype.format !== 'function') {
    String.prototype.format = function () {
        // The string containing the format items (e.g. "{0}")
        // will and always has to be the first argument.
        var theString = this,
            i,
            regEx;

        // start with the second argument (i = 1)
        for (i = 0; i < arguments.length; i += 1) {
            // "gm" = RegEx options for Global search (more than one instance)
            // and for Multiline search
            regEx = new RegExp("\\{" + (i) + "\\}", "gm");
            theString = theString.replace(regEx, arguments[i]);
        }
        return theString;
    };
}
urlParser.bind({
    'provider': 'dailymotion',
    'alternatives': ['dai'],
    'parse': function (url) {
        "use strict";
        var match,
            id,
            startTime,
            result = {};

        match = url.match(/((\/video)|(ly))\/([A-Za-z0-9]+)/i);
        id = match ? match[4] : undefined;

        match = url.match(/[#\?&]start=([A-Za-z0-9]+)/i);
        startTime = match ? getTime(match[1]) : undefined;

        if (!id) {
            return undefined;
        }
        result.mediaType = 'video';
        result.id = id;
        if (startTime) {
            result.startTime = startTime;
        }
        return result;
    },
    'create': function (videoInfo) {
        "use strict";
        if (videoInfo.startTime) {
            return 'http://www.dailymotion.com/video/{0}?start={1}'.format(videoInfo.id, videoInfo.startTime);
        }

        return 'http://dai.ly/{0}'.format(videoInfo.id);
    }
});
//not finished
urlParser.bind({
    'provider': 'livestream',
    'parse': function (url) {
        "use strict";
        var match,
            channel;
        match = url.match(/livestream\.com\/(\w+)/i);
        channel = match ? match[1] : undefined;
        if (!channel) {
            return undefined;
        }

        return {
            'mediaType': 'stream',
            'channel': channel
        };
    }
});
urlParser.bind({
    'provider': 'twitch',
    'parse': function (url) {
        "use strict";
        var match,
            id,
            channel,
            videoIdPrefix,
            result = {};

        match = url.match(/twitch\.tv\/(\w+)(\/(.)\/(\d+))?/i);
        channel = match ? match[1] : undefined;
        videoIdPrefix = match ? match[3] : undefined;
        id = match ? match[4] : undefined;

        match = url.match(/((\?channel)|(\&utm_content))=(\w+)/i);
        channel = match ? match[4] : channel;

        if (!channel) {
            return undefined;
        }
        if (id) {
            result.mediaType = 'video';
            result.id = id;
            result.videoIdPrefix = videoIdPrefix;
        } else {
            result.mediaType = 'stream';
        }
        result.channel = channel;

        return result;
    },
    'create': function (videoInfo) {
        "use strict";
        var url;
        if (videoInfo.mediaType === 'stream') {
            url = 'http://twitch.tv/{0}'.format(videoInfo.channel);
        } else if (videoInfo.mediaType === 'video') {
            url = 'http://twitch.tv/{0}/{1}/{2}'.format(videoInfo.channel, videoInfo.videoIdPrefix, videoInfo.id);
        }
        return url;
    }
});
urlParser.bind({
    'provider': 'vimeo',
    'alternatives': ['vimeopro'],
    'parse': function (url) {
        "use strict";
        var match,
            id;
        match = url.match(/(\/((channels\/[\w]+)|((album\/\d+\/)?videos?)))?\/(\d+)/i);
        id = match ? match[6] : undefined;
        if (!id) {
            return undefined;
        }
        return {
            'mediaType': 'video',
            'id': id
        };
    },
    'create': function (videoInfo) {
        "use strict";
        return 'http://vimeo.com/{0}'.format(videoInfo.id);
    }
});
urlParser.bind({
    'provider': 'youtube',
    'alternatives': ['youtu'],
    'parse': function (url) {
        "use strict";
        var match,
            id,
            playlistId,
            startTime,
            result = {};

        match = url.match(/(((v|be|videos)\/)|(v=))([\w\-]{11})/i);
        id = match ? match[5] : undefined;

        match = url.match(/list=([\w\-]+)/i);
        playlistId = match ? match[1] : undefined;

        match = url.match(/[#\?&](star)?t=([A-Za-z0-9]+)/i);
        startTime = match ? getTime(match[2]) : undefined;


        if (id) {
            result.mediaType = 'video';
            result.id = id;
            if (playlistId) {
                result.playlistId = playlistId;
            }
            if (startTime) {
                result.startTime = startTime;
            }
        } else if (playlistId) {
            result.mediaType = 'playlist';
            result.playlistId = playlistId;
        } else {
            return undefined;
        }

        return result;
    },
    'create': function (videoInfo) {
        "use strict";
        var url;
        if (videoInfo.mediaType === 'video') {
            if (!videoInfo.playlistId) {
                url = 'http://youtu.be/{0}'.format(videoInfo.id);
            } else {
                url = 'https://www.youtube.com/watch?v={0}&list={1}'.format(videoInfo.id, videoInfo.playlistId);
            }
            if (videoInfo.startTime) {
                url += '#t={0}'.format(videoInfo.startTime);
            }
        } else if (videoInfo.mediaType === 'playlist') {
            url = 'https://www.youtube.com/playlist?feature=share&list={0}'.format(videoInfo.playlistId);
        }
        return url;
    }
});