/usr/lib/ruby/vendor_ruby/pdf/reader/register_receiver.rb is in ruby-pdf-reader 1.3.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | # coding: utf-8
# Copyright (C) 2010 James Healy (jimmy@deefa.com)
class PDF::Reader
# An example receiver that just records all callbacks generated by parsing
# a PDF file.
#
# Useful for testing the contents of a file in an rspec/test-unit suite.
#
# Usage:
#
# PDF::Reader.open("somefile.pdf") do |reader|
# receiver = PDF::Reader::RegisterReceiver.new
# reader.page(1).walk(receiver)
# callback = receiver.first_occurance_of(:show_text)
# callback[:args].first.should == "Hellow World"
# end
#
class RegisterReceiver
attr_accessor :callbacks
def initialize
@callbacks = []
end
def respond_to?(meth)
true
end
def method_missing(methodname, *args)
callbacks << {:name => methodname.to_sym, :args => args}
end
# count the number of times a callback fired
def count(methodname)
callbacks.count { |cb| cb[:name] == methodname}
end
# return the details for every time the specified callback was fired
def all(methodname)
callbacks.select { |cb| cb[:name] == methodname }
end
def all_args(methodname)
all(methodname).map { |cb| cb[:args] }
end
# return the details for the first time the specified callback was fired
def first_occurance_of(methodname)
callbacks.find { |cb| cb[:name] == methodname }
end
# return the details for the final time the specified callback was fired
def final_occurance_of(methodname)
all(methodname).last
end
# return the first occurance of a particular series of callbacks
def series(*methods)
return nil if methods.empty?
indexes = (0..(callbacks.size-1))
method_indexes = (0..(methods.size-1))
match = nil
indexes.each do |idx|
count = methods.size
method_indexes.each do |midx|
count -= 1 if callbacks[idx+midx] && callbacks[idx+midx][:name] == methods[midx]
end
if count == 0
return callbacks[idx, methods.size]
end
end
nil
end
end
end
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