Add base files

common.rb

@@ -0,0 +1,44 @@
+class Input
+  FILE = 'input'
+
+  def initialize(directory, file = nil)
+    @filename = "#{directory}/#{file || FILE}"
+  end
+
+  def readlines
+    File.readlines(@filename).reject { |line| line.start_with?('#') }
+  end
+end
+
+class Day
+  def self.run
+    new.run
+  end
+
+  def part1
+  end
+
+  def part2
+  end
+
+  def run
+    puts "=== Part 1 ==="
+    puts part1
+    puts "=== Part 2 ==="
+    puts part2
+  end
+
+  private
+
+  def filename
+    "#{File.dirname($PROGRAM_NAME)}/input"
+  end
+
+  def input
+    @input ||= if File.exist?(filename)
+                 File.readlines(filename).reject { |line| line.start_with?('#') }.map(&:chomp)
+               else
+                 INPUT
+               end
+  end
+end

init-day.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+BASEDIR=$(dirname "$0")
+
+if [ ! -z "$1" ]
+then
+  DAY=$(printf "%02d" "$1")
+else
+  DAY=$(date +%d)
+fi
+
+cd $BASEDIR/
+
+if [ ! -d $DAY ]
+then
+  mkdir $DAY
+fi
+
+if [ ! -f $DAY/script.rb ]
+then
+  sed "s/NB/$DAY/" template.rb >$DAY/script.rb
+fi

template.rb

@@ -0,0 +1,13 @@
+#!/usr/bin/env ruby
+
+require_relative '../common'
+
+class DayNB < Day
+  def part1
+  end
+
+  def part2
+  end
+end
+
+DayNB.run