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Contents
# encoding: utf-8
module Nanoc3::CLI::Commands
class Help < Cri::Command
def name
'help'
end
def aliases
[]
end
def short_desc
'show help for a command'
end
def long_desc
'Show help for the given command, or show general help. When no ' +
'command is given, a list of available commands is displayed, as ' +
'well as a list of global commandline options. When a command is ' +
'given, a command description as well as command-specific ' +
'commandline options are shown.'
end
def usage
"nanoc3 help [options] [command]"
end
def run(options, arguments)
# Check arguments
if arguments.size > 1
$stderr.puts "usage: #{usage}"
exit 1
end
if arguments.length == 0
# Build help text
text = ''
# Add title
text << "nanoc, a static site compiler written in Ruby.\n"
# Add available commands
text << "\n"
text << "Available commands:\n"
text << "\n"
@base.commands.sort.each do |command|
text << sprintf(" %-20s %s\n", command.name, command.short_desc)
end
# Add global options
text << "\n"
text << "Global options:\n"
text << "\n"
@base.global_option_definitions.sort { |x,y| x[:long] <=> y[:long] }.each do |opt_def|
text << sprintf(" -%1s --%-15s %s\n", opt_def[:short], opt_def[:long], opt_def[:desc])
end
# Display text
puts text
elsif arguments.length == 1
command = @base.command_named(arguments[0])
puts command.help
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems