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# encoding: utf-8
class String #:nodoc:
if RUBY_VERSION >= '1.9'
# This 1.9 only regex can save a reasonable amount of time (~20%)
# by not matching "\r\n" so the string is returned unchanged in
# the common case.
CRLF_REGEX = Regexp.new("(?<!\r)\n|\r(?!\n)")
else
CRLF_REGEX = /\n|\r\n|\r/
end
def to_crlf
to_str.gsub(CRLF_REGEX, "\r\n")
end
def to_lf
to_str.gsub(/\r\n|\r/, "\n")
end
unless String.instance_methods(false).map {|m| m.to_sym}.include?(:blank?)
def blank?
self !~ /\S/
end
end
unless method_defined?(:ascii_only?)
# Backport from Ruby 1.9 checks for non-us-ascii characters.
def ascii_only?
self !~ MATCH_NON_US_ASCII
end
MATCH_NON_US_ASCII = /[^\x00-\x7f]/
end
def not_ascii_only?
!ascii_only?
end
unless method_defined?(:bytesize)
alias :bytesize :length
end
end
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