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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?
$stdout.tty? || option?('--tty')
end
def version
puts <<-USAGE
CodeRay #{CodeRay::VERSION}
USAGE
end
def help
puts <<-HELP
This is CodeRay #{CodeRay::VERSION}, a syntax highlighting tool for selected languages.
usage:
coderay [-language] [input] [-format] [output]
defaults:
language detect from input file name or shebang; fall back to plain text
input STDIN
format detect from output file name or use terminal; fall back to HTML page
output STDOUT
common:
coderay file.rb # highlight file to terminal
coderay file.rb > file.html # highlight file to HTML page
coderay file.rb -div > file.html # highlight file to HTML snippet
configure output:
coderay file.py output.json # output tokens as JSON
coderay file.py -loc # count lines of code in Python file
configure input:
coderay -python file # specify the input language
coderay -ruby # take input from STDIN
more:
coderay stylesheet [style] # print CSS stylesheet
HELP
end
def commands
puts <<-COMMANDS
general:
highlight code highlighting (default command)
stylesheet print the CSS stylesheet with the given name
about:
list [of] list all available plugins (or just the scanners|encoders)
commands print this list
help show some help
version print CodeRay version
COMMANDS
end
if option? '-v', '--version'
version
end
if option? '-h', '--help'
help
end
case subcommand
when 'highlight', nil
if ARGV.empty?
version
help
else
signature = args.map { |arg| arg[/^-/] ? '-' : 'f' }.join
names = args.map { |arg| arg.sub(/^-/, '') }
case signature
when /^$/
exit
when /^ff?$/
input_file, output_file, = *names
when /^f-f?$/
input_file, output_filetype, 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 'list'
arg = args.first && args.first.downcase
if [nil, 's', 'sc', 'scanner', 'scanners'].include? arg
puts 'input languages (Scanners):'
scanners = CodeRay::Scanners.all_plugins.map do |plugin|
aliases = (plugin.aliases - [nil]).map { |key| "-#{key}" }.sort_by { |key| key.size }
" #{plugin.lang}: #{plugin.title}#{" (.#{plugin.file_extension}; #{aliases.join(', ')})" unless aliases.empty?}"
end
puts scanners.sort
puts
end
if [nil, 'e', 'en', 'enc', 'encoder', 'encoders'].include? arg
puts 'output formats (Encoders):'
encoders = CodeRay::Encoders.all_plugins.map do |plugin|
aliases = (plugin.aliases - [nil]).map { |key| "-#{key}" }.sort_by { |key| key.size }
" #{plugin.plugin_id}: #{plugin.title}#{" (.#{plugin.file_extension}; #{aliases.join(', ')})" unless aliases.empty?}"
end
puts encoders.sort
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
|
