/usr/lib/python2.7/dist-packages/horizon/templatetags/truncate_filter.py is in python-django-horizon 1:2014.1.5-0ubuntu2.1.
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# Copyright 2012 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Copyright 2012 Nebula, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Template tags for truncating strings.
"""
from django import template
register = template.Library()
@register.filter("truncate")
def truncate(value, size):
if len(value) > size and size > 3:
return value[0:(size - 3)] + '...'
else:
return value[0:size]
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