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89 lines
2.9 KiB
89 lines
2.9 KiB
#-- encoding: UTF-8
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#-- copyright
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# OpenProject is an open source project management software.
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# Copyright (C) 2012-2020 the OpenProject GmbH
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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 version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2017 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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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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#
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# See docs/COPYRIGHT.rdoc for more details.
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#++
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module OpenProject
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# This module provides utility methods to work with PostgreSQL's full-text capabilities (TSVECTOR)
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module FullTextSearch
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DISALLOWED_CHARACTERS = /['?\\:()&|!*<>]/
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def self.tsv_where(table_name, column_name, value, options = { concatenation: :and, normalization: :text })
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if OpenProject::Database.allows_tsv?
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column = '"' + table_name.to_s + '"."' + column_name.to_s + '_tsv"'
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query = tokenize(value, options[:concatenation], options[:normalization])
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language = OpenProject::Configuration.main_content_language
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ActiveRecord::Base.send(
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:sanitize_sql_array, ["#{column} @@ to_tsquery(?, ?)",
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language,
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query]
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)
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end
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end
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def self.tokenize(text, concatenation = :and, normalization = :text)
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terms = normalize(clean_terms(text), normalization).split(/[\s]+/).reject(&:blank?)
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case concatenation
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when :and
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# all terms need to hit
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terms.join ' & '
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when :and_not
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# all terms must not hit.
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'! ' + terms.join(' & ! ')
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end
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end
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def self.normalize(text, type = :text)
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case type
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when :text
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normalize_text(text)
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when :filename
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normalize_filename(text)
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end
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end
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def self.normalize_text(text)
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I18n.with_locale(:en) { I18n.transliterate(text.to_s.downcase) }
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end
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def self.normalize_filename(filename)
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name_in_words = to_words filename.to_s.downcase
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I18n.with_locale(:en) { I18n.transliterate(name_in_words) }
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end
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def self.to_words(text)
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text.gsub /[^[:alnum:]]/, ' '
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end
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def self.clean_terms(terms)
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terms.gsub(DISALLOWED_CHARACTERS, ' ')
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end
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end
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end
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