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Contents
# -*- coding: binary -*-
module Rex
module Text
# We are re-opening the module to add these module methods.
# Breaking them up this way allows us to maintain a little higher
# degree of organisation and make it easier to find what you're looking for
# without hanging the underlying calls that we historically rely upon.
#
# Return the index of the first badchar in +data+, otherwise return
# nil if there wasn't any badchar occurences.
#
# @param data [String] The string to check for bad characters
# @param badchars [String] A list of characters considered to be bad
# @return [Fixnum] Index of the first bad character if any exist in +data+
# @return [nil] If +data+ contains no bad characters
def self.badchar_index(data, badchars = '')
badchars.unpack("C*").each { |badchar|
pos = data.index(badchar.chr)
return pos if pos
}
return nil
end
#
# Removes bad characters from a string.
#
# Modifies +data+ in place
#
# @param data [#delete]
# @param badchars [String] A list of characters considered to be bad
def self.remove_badchars(data, badchars = '')
return data if badchars.length == 0
badchars_pat = badchars.unpack("C*").map{|c| "\\x%.2x" % c}.join
data.gsub!(/[#{badchars_pat}]/n, '')
data
end
#
# Returns all chars that are not in the supplied set
#
# @param keepers [String]
# @return [String] All characters not contained in +keepers+
def self.charset_exclude(keepers)
excluded_bytes = [*(0..255)] - keepers.unpack("C*")
excluded_bytes.pack("C*")
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems