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#!/usr/bin/env ruby
require 'coderay'
$options, $args = ARGV.partition { |arg| arg[/^-[hv]$|--\w+/] }
subcommand = $args.detect { |arg| arg[/^\w/] }
subcommand = nil if subcommand && File.exist?(subcommand)
$args.delete subcommand
def option? *options
!($options & options).empty?
end
def tty?
$stdout.tty? || option?('--tty')
end
def version
puts <<-USAGE
CodeRay #{CodeRay::VERSION}
USAGE
end
def help
puts <<-HELP
Usage:
coderay [-<language>] [input] [-<format>] [output]
Examples:
coderay -ruby file -loc # count lines of code in Ruby file
coderay -ruby < foo.rb # colorized output to terminal
coderay -ruby foo.rb -page foo.html # HTML page output to file
coderay stylesheet # CSS stylesheet
HELP
end
def commands
puts <<-COMMANDS
General:
help print some help
version print CodeRay version
commands print this list
stylesheet print the CSS stylesheet with the given name
COMMANDS
end
if option? '-v', '--version'
version
end
if option? '-h', '--help'
help
end
case subcommand
when 'highlight', nil
if ARGV.empty?
version
help
else
signature = $args.map { |arg| arg[/^-/] ? '-' : 'f' }.join
names = $args.map { |arg| arg.sub(/^-/, '') }
case signature
when /^$/
exit
when /^ff?$/
input_file, output_file, = *names
when /^-ff?$/
input_filetype, input_file, output_file, = *names
when /^-f-f?$/
input_filetype, input_file, output_filetype, output_file, = *names
when /^--?f?$/
input_filetype, output_filetype, output_file, = *names
else
raise signature
end
if input_file
input_filetype ||= CodeRay::FileType.fetch input_file, :text, true
end
if output_file
output_filetype ||= CodeRay::FileType[output_file]
else
output_filetype ||= tty? ? :term : :page
end
if input_file
input = File.read input_file
else
input = $stdin.read
end
output = CodeRay.scan(input, input_filetype).encode(output_filetype)
if output_file
File.open output_file, 'w' do |file|
file.puts output
end
else
puts output
end
end
when 'stylesheet'
puts CodeRay::Encoders[:html]::CSS.new($args.first).stylesheet
when 'commands'
commands
when 'help'
help
else
puts "Unknown command: #{subcommand}"
help
end
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