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				https://github.com/redmine/redmine.git
				synced 2025-11-03 20:06:24 +01:00 
			
		
		
		
	Patch by Pavel Rosický. git-svn-id: http://svn.redmine.org/redmine/trunk@18011 e93f8b46-1217-0410-a6f0-8f06a7374b81
		
			
				
	
	
		
			74 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			74 lines
		
	
	
		
			2.0 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
# frozen_string_literal: true
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module Redmine
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  module CodesetUtil
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    def self.replace_invalid_utf8(str)
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      return nil if str.nil?
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      str = str.dup
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      str.force_encoding('UTF-8')
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      if ! str.valid_encoding?
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        str = str.encode("UTF-16LE", :invalid => :replace,
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              :undef => :replace, :replace => '?').encode("UTF-8")
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      end
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      str
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    end
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    def self.to_utf8(str, encoding)
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      return if str.nil?
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      str = str.b
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      if str.empty?
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        str.force_encoding("UTF-8")
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        return str
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      end
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      enc = encoding.blank? ? "UTF-8" : encoding
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      if enc.upcase != "UTF-8"
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        str.force_encoding(enc)
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        str = str.encode("UTF-8", :invalid => :replace,
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              :undef => :replace, :replace => '?')
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      else
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        str = replace_invalid_utf8(str)
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      end
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      str
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    end
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    def self.to_utf8_by_setting(str)
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      return if str.nil?
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      str = str.dup
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      self.to_utf8_by_setting_internal(str).force_encoding('UTF-8')
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    end
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    def self.to_utf8_by_setting_internal(str)
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      return if str.nil?
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      str = str.b
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      return str if str.empty?
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      return str if /\A[\r\n\t\x20-\x7e]*\Z/n.match?(str) # for us-ascii
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      str.force_encoding('UTF-8')
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      encodings = Setting.repositories_encodings.split(',').collect(&:strip)
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      encodings.each do |encoding|
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        begin
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          str.force_encoding(encoding)
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          utf8 = str.encode('UTF-8')
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          return utf8 if utf8.valid_encoding?
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        rescue
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          # do nothing here and try the next encoding
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        end
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      end
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      self.replace_invalid_utf8(str).force_encoding('UTF-8')
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    end
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    def self.from_utf8(str, encoding)
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      return if str.nil?
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      str = str.dup
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      str ||= ''
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      str.force_encoding('UTF-8')
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      if encoding.upcase != 'UTF-8'
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        str = str.encode(encoding, :invalid => :replace,
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                         :undef => :replace, :replace => '?')
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      else
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        str = self.replace_invalid_utf8(str)
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      end
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    end
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  end
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end
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