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Filename : string_util.rb

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#
# Fluentd
#
#    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.
#

require "string-scrub" unless "".respond_to?(:scrub)

module Fluent
  module StringUtil
    def match_regexp(regexp, string)
      begin
        return regexp.match(string)
      rescue ArgumentError => e
        raise e unless e.message.index("invalid byte sequence in".freeze).zero?
        $log.info "invalid byte sequence is replaced in `#{string}`"
        string = string.scrub('?')
        retry
      end
      return true
    end
    module_function :match_regexp
  end
end