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module Incline::Extensions
##
# Defines or overrides few string helper methods.
module String
##
# Converts a hex string into a byte string.
#
# Whitespace in the string is ignored.
# The string must only contain characters valid for hex (ie - 0-9, A-F, a-f).
# The string must contain an even number of characters since each character only represents half a byte.
def to_byte_string
ret = self.gsub(/\s+/,'')
raise 'Hex string must have even number of characters.' unless ret.size % 2 == 0
raise 'Hex string must only contain 0-9 and A-F characters.' if ret =~ /[^0-9a-fA-F]/
[ret].pack('H*').force_encoding('ascii-8bit')
end
##
# Converts a binary string into a hex string.
#
# The +grouping+ parameter can be set to true or an integer value specifying how many chars you want in
# each group. If true or less than 1, then characters are put into groups of 2.
def to_hex_string(grouping = false)
ret = self.unpack('H*').first
if grouping
if grouping.is_a?(::Integer) && grouping > 0
ret.gsub(/(#{'.' * grouping})/,'\1 ').rstrip
else
ret.gsub(/(..)/,'\1 ').rstrip
end
else
ret
end
end
##
# Converts a string into a boolean value.
#
# The following values are considered true: true, t, yes, y, on, 1
# Everything else will be false.
def to_bool
%w(true t yes y on 1).include?(self.downcase)
end
end
end
String.include Incline::Extensions::String
Version data entries
48 entries across 48 versions & 1 rubygems