/
help.rb
34 lines (31 loc) · 938 Bytes
/
help.rb
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
# frozen_string_literal: true
module Jekyll
module Commands
class Help < Command
class << self
def init_with_program(prog)
prog.command(:help) do |c|
c.syntax "help [subcommand]"
c.description "Show the help message, optionally for a given subcommand."
c.action do |args, _|
cmd = (args.first || "").to_sym
if args.empty?
puts prog
elsif prog.has_command? cmd
puts prog.commands[cmd]
else
invalid_command(prog, cmd)
abort
end
end
end
end
def invalid_command(prog, cmd)
Jekyll.logger.error "Error:",
"Hmm... we don't know what the '#{cmd}' command is."
Jekyll.logger.info "Valid commands:", prog.commands.keys.join(", ")
end
end
end
end
end