34 lines
1.3 KiB
Ruby
34 lines
1.3 KiB
Ruby
# redMine - project management software
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# Copyright (C) 2006-2007 Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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module SearchHelper
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def highlight_tokens(text, tokens)
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return text unless text && tokens && !tokens.empty?
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regexp = Regexp.new "(#{tokens.join('|')})", Regexp::IGNORECASE
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result = ''
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text.split(regexp).each_with_index do |words, i|
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if result.length > 1200
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# maximum length of the preview reached
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result << '...'
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break
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end
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result << (i.even? ? h(words.length > 100 ? "#{words[0..44]} ... #{words[-45..-1]}" : words) : content_tag('span', h(words), :class => 'highlight'))
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end
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result
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end
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end
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