Update ogp.js to support any Open Graph namespace/prefixes.

README.md

@@ -23,35 +23,43 @@ var jsdom = require('jsdom'),
     url = 'http://www.imdb.com/title/tt0068646/'
 
 jsdom.env({ html: url, done: function(error, window) {
-
-	// 3. pass window as the only argument to ogp.parse method
-	var ogData = ogp.parse(window)
-
-	// 5. Profit!
-	console.log('Open Graph data', ogData)
+  // 3. pass window as the only argument to ogp.parse method
+  var ogData = ogp.parse(window)
+
+  // ogp.parse can also parse Open Graph properties for any namespaces desired.
+  //
+  // To match og and fb namespaces the following could be done:
+  //   var ogData = ogp.parse(window, 'og fb')
+  // or:
+  //   var ogData = ogp.parse(wondow, ['og', 'fb'])
+
+  // 5. Profit!
+  console.log('Open Graph data', ogData)
 }})
 ```
 
 This will put next structure into stdout:
 
 ```javascript
-{ url: 'http://www.imdb.com/title/tt0068646/',
-  title: 'The Godfather (1972)',
-  type: 'video.movie',
-  image: 'http://ia.media-imdb.com/images/M/MV5BMTIyMTIxNjI5NF5BMl5BanBnXkFtZTcwNzQzNDM5MQ@@._V1._SX97_SY140_.jpg',
-  site_name: 'IMDb' }
+{ 'og:url': 'http://www.imdb.com/title/tt0068646/',
+  'og:title': 'The Godfather (1972)',
+  'og:type': 'video.movie',
+  'og:image': 'http://ia.media-imdb.com/images/M/MV5BMTIyMTIxNjI5NF5BMl5BanBnXkFtZTcwNzQzNDM5MQ@@._V1._SX97_SY140_.jpg',
+  'og:site_name': 'IMDb' }
 ```
 
 In case if some of OpenGraph tags were presented multiple times (few image tags for example, output structure field related to that tag will be converted into array:
 
 ```javascript
-{ image: ['image1.png', 'image2.png']}
+{ 'og:image': ['image1.png', 'image2.png']}
 ```
 
 ## Credits
 
 Written and maintained by [Yury Proshchenko](mailto:spect.man@gmail.com).
 
+Multiple namespace support by [Cody Craven](http://github.com/codycraven).
+
 ## License
 
 The MIT License

lib/ogp.js

@@ -1,35 +1,44 @@
-exports.parse = function(window) {
-	var ns
-	for (var i = 0; i < window.document.documentElement.attributes.length; ++i) {
-		var attr = window.document.documentElement.attributes[i]
-		if (attr.nodeValue.toLowerCase() !== 'http://opengraphprotocol.org/schema/') continue
-
-		ns = attr.nodeName.substring(6)
-		if (ns) break
-	}
-
-	if (!ns) return {}
-
-	var result = {},
-	    metaTags = window.document.getElementsByTagName('meta')
-
-	for (var i = 0; i < metaTags.length; ++i) {
-		var tag = metaTags[i],
-		    propertyAttr = tag.attributes['property']
-
-		if (!propertyAttr || propertyAttr.nodeValue.substring(0, ns.length) !== ns)
-			continue
-
-		var property = tag.attributes['property'].nodeValue.substring(ns.length+1),
-		    content = tag.attributes['content'].nodeValue
-
-		if (!result[property])
-			result[property] = content
-		else if (result[property].push)
-			result[property].push(content)
-		else
-			result[property] = [result[property], content]
-	}
-
-	return result
+exports.parse = function(window, namespaces) {
+  var result = {},
+      metaTags = window.document.getElementsByTagName('meta'),
+      propertyRegex = /^([a-z]+):/;
+
+  // If undefined set as "og" namespace (OGP default).
+  if (!namespaces)
+    namespaces = ['og'];
+  // If string convert to an array, accepts comma separated.
+  else if (typeof namespaces === 'string') {
+    namespaces = namespaces.split(' ');
+  }
+
+  for (var i = 0; i < metaTags.length; ++i) {
+    var tag = metaTags[i],
+        propertyAttr = tag.attributes['property']
+
+    // All OG meta tags contain property attribute.
+    if (!propertyAttr) {
+      continue
+    }
+    else {
+      var matches = propertyRegex.exec(propertyAttr.nodeValue);
+      // Verify OG property is found in our acceptable namespaces.
+      if (!matches[1] || namespaces.indexOf(matches[1]) == -1)
+        continue
+    }
+
+    var property = tag.attributes['property'].nodeValue,
+        content = tag.attributes['content'].nodeValue
+
+    // If the property does not already exist, assign it.
+    if (!result[property])
+      result[property] = content
+    // Else if result[property] is already an array then push it.
+    else if (result[property].push)
+      result[property].push(content)
+    // Else convert string to array.
+    else
+      result[property] = [result[property], content]
+  }
+
+  return result
 }

package.json

@@ -1,10 +1,11 @@
 {
 	"name": "ogp",
 	"description": "Parse Open Graph meta tags from jsdom generated DOM",
-	"version": "0.0.2",
+	"version": "1.0.0",
 	"author": "Yury Proshchenko <spect.man@gmail.com>",
 	"contributors": [ 
-		{ "name": "Yury Proshchenko", "email": "spect.man@gmail.com" }
+		{ "name": "Yury Proshchenko", "email": "spect.man@gmail.com" },
+    { "name": "Cody Craven", "email": "cody@cravencode.com", "url": "https://github.com/codycraven" }
 	],
 	"keywords": ["open graph", "opengraph", "ogp"],
 	"main": "./lib/ogp.js",