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# RemoveAccents version 1.0.3 (c) 2008-2009 Solutions Informatiques Techniconseils inc.
#
# This module adds 2 methods to the string class.
# Up-to-date version and documentation available at:
#
# http://www.techniconseils.ca/en/scripts-remove-accents-ruby.php
#
# This script is available under the following license :
# Creative Commons Attribution-Share Alike 2.5.
#
# See full license and details at :
# http://creativecommons.org/licenses/by-sa/2.5/ca/
#
# Version history:
# * 1.0.3 : July 23 2009
# Corrected some incorrect character codes. Source is now wikipedia at:
# http://en.wikipedia.org/wiki/ISO/IEC_8859-1#Related_character_maps
# Thanks to Raimon Fernandez for pointing out the incorrect codes.
# * 1.0.2 : October 29 2008
# Slightly optimized version of urlize - Jonathan Grenier (jgrenier@techniconseils.ca)
# * 1.0.1 : October 29 2008
# First public revision - Jonathan Grenier (jgrenier@techniconseils.ca)
#
class String
# The extended characters map used by removeaccents. The accented characters
# are coded here using their numerical equivalent to sidestep encoding issues.
# These correspond to ISO-8859-1 encoding.
ACCENTS_MAPPING = {
'E' => [200,201,202,203],
'e' => [232,233,234,235],
'A' => [192,193,194,195,196,197],
'a' => [224,225,226,227,228,229,230],
'C' => [199],
'c' => [231],
'O' => [210,211,212,213,214,216],
'o' => [242,243,244,245,246,248],
'I' => [204,205,206,207],
'i' => [236,237,238,239],
'U' => [217,218,219,220],
'u' => [249,250,251,252],
'N' => [209],
'n' => [241],
'Y' => [221],
'y' => [253,255],
'AE' => [306],
'ae' => [346],
'OE' => [188],
'oe' => [189]
}
# Remove the accents from the string. Uses String::ACCENTS_MAPPING as the source map.
def removeaccents
str = String.new(self)
String::ACCENTS_MAPPING.each {|letter,accents|
packed = accents.pack('U*')
rxp = Regexp.new("[#{packed}]", nil, 'U')
str.gsub!(rxp, letter)
}
str
end
# Convert a string to a format suitable for a URL without ever using escaped characters.
# It calls strip, removeaccents, downcase (optional) then removes the spaces (optional)
# and finally removes any characters matching the default regexp (/[^-_A-Za-z0-9]/).
#
# Options
#
# * :downcase => call downcase on the string (defaults to true)
# * :convert_spaces => Convert space to underscore (defaults to false)
# * :regexp => The regexp matching characters that will be converting to an empty string (defaults to /[^-_A-Za-z0-9]/)
def urlize(options = {})
options[:downcase] ||= true
options[:convert_spaces] ||= false
options[:regexp] ||= /[^-_A-Za-z0-9]/
str = self.strip.removeaccents
str.downcase! if options[:downcase]
str.gsub!(/\ /,'_') if options[:convert_spaces]
str.gsub(options[:regexp], '')
end
end