Added opengraph plugin.

Author: cc-d

CHANGES.txt

@@ -75,5 +75,5 @@ v0.3, 2015-07-03 --
 	- Fixed some bugs
 		- changed data files installation directory after installing 
 		  from setup.py
-
+	- Added opengraph plugin
 

README.rst

@@ -129,14 +129,6 @@ By default this exception is skipped and logged but can be enabled with "skip_fe
 TODO
 -----------------
 
-Still missing the following resolvers:
-
-
-* OpengraphResolver()
-
-
-I have no plans to implement a 9gag resolver.
-
 Need to implement better caching. Future plan is to include a configurable cache method so images seen across sessions can be cached for better performance
 
 

docs/README.txt

@@ -129,13 +129,6 @@ By default this exception is skipped and logged but can be enabled with "skip_fe
 TODO
 -----------------
 
-Still missing the following resolvers:
-
-* OpengraphResolver()
-
-
-I have no plans to implement a 9gag resolver.
-
 Need to implement better caching. Future plan is to include a configurable cache method so images seen across sessions can be cached for better performance
 
 

imageresolver/plugins/opengraph.py

@@ -0,0 +1,26 @@
+import re
+import os
+import logging
+from bs4 import BeautifulSoup
+
+class Plugin:
+	def get_image(self, url, soup):
+
+		ogtags = [{'attribute':'property', 'name':'og:image', 'value':'content'},
+			{'attribute':'rel', 'name':'image_src', 'value':'href'},
+			{'attribute':'name', 'name':'twitter:image', 'value':'value'},
+			{'attribute':'name', 'name':'twitter:image', 'value':'content'}]
+
+		ogimages = []		
+
+		for ogtag in ogtags:
+			tags = soup.find_all('meta', {ogtag['attribute']:ogtag['name']})
+			ogimages = ogimages + [image[ogtag['value']] for image in tags]
+		
+		if len(ogimages) >= 1:
+			logger = logging.getLogger('ImageResolver')
+			logger.debug('Resolving using plugin ' + str(os.path.basename(__file__)) + ' ' +  str(url))
+			return ogimages[0]
+
+		return None
+