Add the basics for input generator

1 files changed, 35 insertions, 0 deletions

diff --git a/CLI/ruby/lib/game_of_life/generators/input.rb b/CLI/ruby/lib/game_of_life/generators/input.rb
new file mode 100644
index 0000000..3965131
--- /dev/null
+++ b/CLI/ruby/lib/game_of_life/generators/input.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require "open-uri"
+
+module GameOfLife
+  module Generators
+    # Generate a new Universe/Board with a parsed local file or remote URL/file
+    module Input
+      # Generate a new Universe/Board with a parsed local file or remote URL/file
+      # @param options [Hash] CLI options to generate initial conditions
+      # @option options [String] "input" path to a local file or URL to open
+      # @option options [Numeric] "width" (floored) and used as the width of the universe
+      # @option options [Numeric] "height" (floored) and used as the height of the universe
+      # @return [TODO]
+      def self.new(options)
+        # By design, it's intentional that we use URI.open to to allow seamless file and url access
+        raw = URI.open(options["input"]).read.split("\n") # rubocop:disable Security/Open
+
+        # Parse the file and convert it to a boolean 2D array
+        # where any alpha numeric character is considered a living cell (true)
+        raw.map! { |row| row.chars.map { |char| char.match?(/[[:alnum:]]/) } }
+
+        # Generate a universe based on the parsed raw file and fill it with the cells
+        universe = GameOfLife::Universe.new(height: options["height"], width: options["width"])
+        (0...options["height"].to_i).each do |i|
+          (0...options["width"].to_i).each do |j|
+            cell = ::GameOfLife::Cell.new(alive: raw.fetch(i, nil)&.fetch(j, nil))
+            universe[i][j] = cell
+          end
+        end
+        return universe
+      end
+    end
+  end
+end