add abebooks

ox/web/abebooks.py

@@ -0,0 +1,20 @@
+from ox.cache import read_url
+import re
+import lxml.html
+
+def get_data(id):
+    info = {}
+    base = 'http://www.abebooks.com'
+    url = '%s/servlet/SearchResults?isbn=%s&sts=t' % (base, id)
+    data = read_url(url)
+    urls = re.compile('href="(/servlet/BookDetailsPL[^"]+)"').findall(data)
+    if urls:
+        details = '%s%s' % (base, urls[0])
+        data = read_url(details)
+        doc = lxml.html.document_fromstring(data)
+        for e in doc.xpath("//*[contains(@id, 'biblio')]"):
+            key = e.attrib['id'].replace('biblio-', '')
+            value = e.text_content()
+            if value and key not in ('bookcondition', 'binding'):
+                info[key] = value
+    return info