module Redmine
module CodesetUtil
def self.replace_invalid_utf8(str)
return str if str.nil?
str.force_encoding('UTF-8')
if ! str.valid_encoding?
str = str.encode("US-ASCII", :invalid => :replace,
:undef => :replace, :replace => '?').encode("UTF-8")
end
str
end
def self.to_utf8(str, encoding)
return str if str.nil?
str.force_encoding("ASCII-8BIT")
if str.empty?
str.force_encoding("UTF-8")
return str
end
enc = encoding.blank? ? "UTF-8" : encoding
if enc.upcase != "UTF-8"
str.force_encoding(enc)
str = str.encode("UTF-8", :invalid => :replace,
:undef => :replace, :replace => '?')
else
str.force_encoding("UTF-8")
if ! str.valid_encoding?
str = str.encode("US-ASCII", :invalid => :replace,
:undef => :replace, :replace => '?').encode("UTF-8")
end
end
str
end
def self.to_utf8_by_setting(str)
return str if str.nil?
self.to_utf8_by_setting_internal(str).force_encoding('UTF-8')
end
def self.to_utf8_by_setting_internal(str)
return str if str.nil?
str.force_encoding('ASCII-8BIT')
return str if str.empty?
return str if /\A[\r\n\t\x20-\x7e]*\Z/n.match(str) # for us-ascii
str.force_encoding('UTF-8')
encodings = Setting.repositories_encodings.split(',').collect(&:strip)
encodings.each do |encoding|
begin
str.force_encoding(encoding)
utf8 = str.encode('UTF-8')
return utf8 if utf8.valid_encoding?
rescue
# do nothing here and try the next encoding
end
end
self.replace_invalid_utf8(str).force_encoding('UTF-8')
end
def self.from_utf8(str, encoding)
str ||= ''
str.force_encoding('UTF-8')
if encoding.upcase != 'UTF-8'
str = str.encode(encoding, :invalid => :replace,
:undef => :replace, :replace => '?')
else
str = self.replace_invalid_utf8(str)
end
end
end
end
