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Contents
# = TITLE:
# Censor
#
# = SYNOPIS:
# Very basic extension to string for weeding out text.
#
# AUTHORS:
# - George Moschovitis
# - Trans
#
# TODO:
# - Deprecate in favor or, or rewrite to use, textfilter.rb ?
class String #:nodoc:
# Apply a set of rules (regular expression matches) to the string.
#
# The rules must be applied in order! So we cannot use a
# hash because the ordering is not guaranteed! we use an
# array instead.
def censor(rules)
raise ArgumentError.new('rules parameter is nil') unless rules # gmosx: helps to find bugs
s = dup
rules.each do |match,edit|
s.gsub!(match,edit)
end
return s
end
alias_method :rewrite, :censor
# Make sure the string passes a collection of censorship rules
# defined with reqular expressions.
def censored?(rules)
for r in rules
return true if self =~ r
end
return false
end
# Filters out words from a string based on block test.
#
# "a string".word_filter { |word| word =~ /^a/ } #=> "string"
#
def censor_words( &blk )
s = self.dup
s.censor_words!( &blk )
end
alias_method :word_filter, :censor_words
# In place version of #word_filter.
#
# "a string".word_filter { |word| ... }
#
# TODO: Surely this can be written better.
def censor_words! #:yield:
rest_of_string = self
wordfind = /(\w+)/
offset = 0
while wmatch = wordfind.match(rest_of_string)
word = wmatch[0]
range = offset+wmatch.begin(0) ... offset+wmatch.end(0)
rest_of_string = wmatch.post_match
self[range] = yield( word ).to_s
offset = self.length - rest_of_string.length
end
self
end
alias_method :word_filter!, :censor_words!
end
Version data entries
9 entries across 9 versions & 2 rubygems