File: trimmer.py

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python-lunr 0.8.0-1
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import re

from lunr.pipeline import Pipeline

full_re = re.compile(r"^\W*?([^\W]+)\W*?$")


def trimmer(token, i=None, tokens=None):
    def trim(s, metadata=None):
        match = full_re.match(s)
        if match is None:
            return s
        return match.group(1)

    return token.update(trim)


Pipeline.register_function(trimmer, "trimmer")