[CMF-checkins] CVS: CMF - utils.py:1.12

[Jeffrey Shell]

Update of /cvs-repository/CMF/CMFCore
In directory korak.digicool.com:/home/jeffrey/InstanceHomes/cmf-dev/CMF/CMFCore

Modified Files:
	utils.py 
Log Message:
Added keyword splitter utility for parsing headers (subject AND
keywords as meta tags)



--- Updated File utils.py in package CMF --
--- utils.py	2001/05/31 17:58:00	1.11
+++ utils.py	2001/06/01 00:20:24	1.12
@@ -540,6 +540,21 @@
     html = CMFHtmlWithImages( doc, level )
     return html
 
+### Metadata Keyword splitter utilities
+import re, string, operator
+KEYSPLITRE = re.compile(r'[,;]')
+def keywordsplitter(headers,
+                    names=('Subject', 'Keywords',),
+                    splitter=KEYSPLITRE.split):
+    """ Splits keywords out of headers, keyed on names.  Returns list. """
+    out = []
+    for head in names:
+        keylist = splitter(headers.get(head, ''))
+        keylist = map(string.strip, keylist)
+        out.extend(filter(operator.truth, keylist))
+    return out
+    
+
 if 0:
     # Hopefully we can use this.