scrap — a simple manager of code meant to be used once

scrap

#!/usr/bin/env ruby
require 'pathname'

### Configuration begins here

SCRAP_DIR = '/Users/evol/.scraps'
EXTENSIONS = {
  'rb'  => 'irb -r $FILE',
  'cpp' => 'g++ -std=c++11 $FILE; ./a.out',
  'hs'  => 'ghci $FILE'
}
EDITOR = 'subl'

### Configuration ends here

def usage
  puts "Usage: scrap [--edit|-e] LANGUAGE"
  puts
  puts "Supported languages: " << EXTENSIONS.keys.join(', ')
  exit
end

def file(language)
  path = Pathname.new(SCRAP_DIR).join("scrap.#{language}")
  path.to_s
end

def command(language)
  EXTENSIONS.fetch(language).gsub('$FILE', file(language))
end

language = ARGV[0]

if ARGV.empty?
  usage
elsif ARGV[0].start_with? '-'
  usage if ARGV.length < 2

  if ['--edit', '-e'].include? ARGV[0]
    exec EDITOR, file(ARGV[1])
    exit
  else
    puts 'scrap: Unrecognized parameter: ' << ARGV[0]
    language = ARGV[1]
  end
end

unless EXTENSIONS.has_key? language
  puts 'scrap: Unknown language: ' << language
  exit 1
end

Dir.chdir SCRAP_DIR
exec command(language)