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	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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| 
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| module Redmine
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|   module CodesetUtil
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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