javascript para buscar medios embebeables en una url

media.js

/** 
  * media.js
  * script para buscar medios embebeables en una url 
  * por josé tomás albornoz - www.eljojo.net
  * usa trozos de código sacados de: https://twimg0-a.akamaihd.net/b/1/bundle/t1-more-en-201201121558.js
  */

var mediajs = {
	providers: {
		youtube:{
			type: 'video',
			matchers: {
				//tinyUrl: /^(?:(?:https?\:\/\/)?(?:www\.)?)?youtu\.be\/([a-zA-Z0-9_\-\?\&\=\/]+)/i,
                standardUrl: /^(?:(?:https?\:\/\/)?(?:www\.)?)?youtube\.com\/watch[a-zA-Z0-9_\-\?\&\=\/]+/i
			},
			process: function(url, match_name, match) {
				var result = {}
				if(match_name == 'tinyURL') {
					//return this.location.pathname.replace(/\//g, "");
				}else{
					result.id = url.match(/[\?\&]v\=([\w\-]+)(?:\&|$)/)[1]
				}
				return result;
			},
			templates: {
				thumbnail: 'http://img.youtube.com/vi/{id}/0.jpg',
				video: 'http://www.youtube.com/embed/{id}'
			}
		},
		yfrog: {
			type: 'photo',
			matchers: {
				media: /^(?:(?:https?\:\/\/)?(?:www\.)?)?yfrog\.(?:com|ru|com\.tr|it|fr|co\.il|co\.uk|com\.pl|pl|eu|us)\/(\w+)/i
			},
			process: function(url, match_name, match) {
				return {base_url: match[0]}
			},
			templates: {
				thumbnail: '{base_url}:small',
				medium: '{base_url}:medium',
			}
		},
		twitpic: {
			type: 'photo',
			matchers: {
                media: /^(?:(?:https?\:\/\/)?(?:www\.)?)?twitpic\.com\/(?!(?:place|photos|events)\/)([a-zA-Z0-9\?\=\-]+)/i
            },
			process: function(url, match_name, match) {
				return {id: match[1]}
			},
			templates: {
				thumbnail: 'http://twitpic.com/show/thumb/{id}',
				mini: 'http://twitpic.com/show/mini/{id}',
				medium: 'http://twitpic.com/show/iphone/{id}',
			}
		}
		
	},
	utils: {
		//optional_protocol: /(?:(?:https?\:\/\/)?(?:www\.)?)/,
        //wildcard: /[a-zA-Z0-9_#\.\-\?\&\=\/]+/,
		findProvider: function(url, providers) {
			for(var provider_name in providers) {
				var provider = providers[provider_name],
					matchers = provider.matchers;
				for(var match_name in matchers) {
					var match = url.match(matchers[match_name])
					if(match) return {provider: provider, match: match, match_name: match_name, provider_name: provider_name};
				}
			}
			return false;
		},
		parseTemplate: function(template, data) {
			for(var data_name in data) {
				template = template.replace('{'+data_name+'}', data[data_name])
			}
			return template
		}
	},
	parseUrl: function(url) {
		//console.log('parseando: '+url)
		var provider_found = this.utils.findProvider(url, this.providers);
		if(provider_found == false) return false;
		var provider = provider_found.provider,
			match = provider_found.match,
			match_name = provider_found.match_name,
			templates = provider.templates;
		var provider_data = provider.process(url, match_name, match);
		var extracted = {};
		for(var template_name in templates) {
			extracted[template_name] = this.utils.parseTemplate(templates[template_name], provider_data)
		}
		var result = {
			extracted: extracted,
			provider: provider_found.provider_name,
			url: url,
			type: provider.type
		}
		return result;
	}
}

/*
//var url = 'http://www.youtube.com/watch?v=t2hZA9T07sc&feature=g-vrec&context=G2dc6d8cRVAAAAAAAAAQ'
//var url = 'http://yfrog.com/kfae65j:medium';
var url = 'http://twitpic.com/882xnc';
var parsed_url = mediajs.parseUrl(url);
console.log(parsed_url)
*/