def convertStringToIndex(self, content, content_type, instance):
"""
convertStringToIndex(self, content, content_type, instance) => Utility to convert a string to HTML
using the converter stuff.
"""
# Convert indexer output to plain "optimized" text
index = self._convertStringToMime(content, content_type, instance, "text/plain")
index = striphtml.strip(index)
words = []
for w in string.split(index):
stripped = string.lower(string.strip(w))
if not stripped in words:
words.append(stripped)
words.sort
return string.join(words, " ")
