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#!/usr/bin/env ruby
require 'coderay'
$options, args = ARGV.partition { |arg| arg[/^-[hv]$|--\w+/] }
subcommand = args.first if /^\w/ === args.first
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
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, optional)
stylesheet print the CSS stylesheet with the given name (aliases: style, css)
about:
list [of] list all available plugins (or just the scanners|encoders|styles|filetypes)
commands print this list
help show some help
version print CodeRay version
COMMANDS
end
def print_list_of plugin_host
plugins = plugin_host.all_plugins.map do |plugin|
info = " #{plugin.plugin_id}: #{plugin.title}"
aliases = (plugin.aliases - [:default]).map { |key| "-#{key}" }.sort_by { |key| key.size }
if plugin.respond_to?(:file_extension) || !aliases.empty?
additional_info = []
additional_info << aliases.join(', ') unless aliases.empty?
info << " (#{additional_info.join('; ')})"
end
info << ' <-- default' if plugin.aliases.include? :default
info
end
puts plugins.sort
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_format, output_file, = *names
when /^-ff?$/
input_lang, input_file, output_file, = *names
when /^-f-f?$/
input_lang, input_file, output_format, output_file, = *names
when /^--?f?$/
input_lang, output_format, output_file, = *names
else
$stdout = $stderr
help
puts
puts "Unknown parameter order: #{args.join ' '}, expected: [-language] [input] [-format] [output]"
exit 1
end
if input_file
input_lang ||= CodeRay::FileType.fetch input_file, :text, true
end
if output_file
output_format ||= CodeRay::FileType[output_file] || :plain
else
output_format ||= :terminal_256
end
output_format = :page if output_format.to_s == 'html'
if input_file
input = File.read input_file
else
input = $stdin.read
end
begin
file =
if output_file
File.open output_file, 'w'
else
$stdout
end
CodeRay.encode(input, input_lang, output_format, :out => file)
file.puts
rescue CodeRay::PluginHost::PluginNotFound => boom
$stdout = $stderr
if boom.message[/CodeRay::(\w+)s could not load plugin :?(.*?): /]
puts "I don't know the #$1 \"#$2\"."
else
puts boom.message
end
# puts "I don't know this plugin: #{boom.message[/Could not load plugin (.*?): /, 1]}."
rescue CodeRay::Scanners::Scanner::ScanError # FIXME: rescue Errno::EPIPE
# this is sometimes raised by pagers; ignore [TODO: wtf?]
ensure
file.close if output_file
end
end
when 'li', 'list'
arg = args.first && args.first.downcase
if [nil, 's', 'sc', 'scanner', 'scanners'].include? arg
puts 'input languages (Scanners):'
print_list_of CodeRay::Scanners
end
if [nil, 'e', 'en', 'enc', 'encoder', 'encoders'].include? arg
puts 'output formats (Encoders):'
print_list_of CodeRay::Encoders
end
if [nil, 'st', 'style', 'styles'].include? arg
puts 'CSS themes for HTML output (Styles):'
print_list_of CodeRay::Styles
end
if [nil, 'f', 'ft', 'file', 'filetype', 'filetypes'].include? arg
puts 'recognized file types:'
filetypes = Hash.new { |h, k| h[k] = [] }
CodeRay::FileType::TypeFromExt.inject filetypes do |types, (ext, type)|
types[type.to_s] << ".#{ext}"
types
end
CodeRay::FileType::TypeFromName.inject filetypes do |types, (name, type)|
types[type.to_s] << name
types
end
filetypes.sort.each do |type, exts|
puts " #{type}: #{exts.sort_by { |ext| ext.size }.join(', ')}"
end
end
when 'stylesheet', 'style', 'css'
puts CodeRay::Encoders[:html]::CSS.new(args.first || :default).stylesheet
when 'commands'
commands
when 'help'
help
else
$stdout = $stderr
help
puts
if subcommand[/\A\w+\z/]
puts "Unknown command: #{subcommand}"
else
puts "File not found: #{subcommand}"
end
exit 1
end
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