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#==
# Copyright (C) 2008 James S Urquhart
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation
# files (the "Software"), to deal in the Software without
# restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following
# conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#++
class String
def twist(twister)
return self if self.length != twister.length
untwist_arr = self.split('')
twist_arr = twister.clone()
twister.length.times do |ti|
twist_arr[twister[ti]] = untwist_arr[ti]
end
return twist_arr.join()
end
def untwist(twister)
return self if self.length != twister.length
twist_arr = self.split('')
untwist_arr = twister.clone()
twister.length.times do |ti|
untwist_arr[ti] = twist_arr[twister[ti]]
end
return untwist_arr.join()
end
def valid_hash?
(self =~ /^([a-f0-9]*)$/) != nil
end
def sanitize_filename
fname = File.basename(self)
fname.gsub(/[^\w\.\-]/,'_')
end
end