Add bin and edit workflow

bin/gems/pdf-reader-2.14.1/lib/pdf/reader/object_stream.rb

@@ -0,0 +1,53 @@
+# coding: utf-8
+# typed: strict
+# frozen_string_literal: true
+
+class PDF::Reader
+
+  # provides a wrapper around a PDF stream object that contains other objects in it.
+  # This is done for added compression and is described as an "Object Stream" in the spec.
+  #
+  class ObjectStream # :nodoc:
+    def initialize(stream)
+      @dict = stream.hash
+      @data = stream.unfiltered_data
+    end
+
+    def [](objid)
+      if offsets[objid].nil?
+        nil
+      else
+        buf = PDF::Reader::Buffer.new(StringIO.new(@data), :seek => offsets[objid])
+        parser = PDF::Reader::Parser.new(buf)
+        parser.parse_token
+      end
+    end
+
+    def size
+      TypeCheck.cast_to_int!(@dict[:N])
+    end
+
+    private
+
+    def offsets
+      @offsets ||= {}
+      return @offsets if @offsets.keys.size > 0
+
+      size.times do
+        @offsets[buffer.token.to_i] = first + buffer.token.to_i
+      end
+      @offsets
+    end
+
+    def first
+      TypeCheck.cast_to_int!(@dict[:First])
+    end
+
+    def buffer
+      @buffer ||= PDF::Reader::Buffer.new(StringIO.new(@data))
+    end
+
+  end
+
+end
+