Class: Babushka::Cmdline::Parser

Inherits:

Object

• Object
• Babushka::Cmdline::Parser

show all

Includes:

LogHelpers

Defined in:

lib/babushka/cmdline/parser.rb

Instance Attribute Summary (collapse)

• - (Object) argv readonly

  Returns the value of attribute argv.

• - (Object) opts readonly

  Returns the value of attribute opts.

• - (Object) verb readonly

  Returns the value of attribute verb.

Class Method Summary (collapse)

• + (Object) for(argv)

Instance Method Summary (collapse)

• - (Parser) initialize(verb, argv, parse_opts = {}) constructor

  A new instance of Parser.

• - (Object) parse(&blk)
• - (Object) print_usage
• - (Object) run

Methods included from LogHelpers

#debug, #log, #log_block, #log_error, #log_ok, #log_verbose, #log_warn

20
21
22
23
24

# File 'lib/babushka/cmdline/parser.rb', line 20

def initialize verb, argv, parse_opts = {}
  @verb, @argv, @opts, @implicit_verb = verb, argv, default_opts, parse_opts[:implicit_verb]
  parse(&Handler.for('global').opt_definer)
  parse(&Handler.for(verb).opt_definer)
end

8
9
10

# File 'lib/babushka/cmdline/parser.rb', line 8

def argv
  @argv
end

8
9
10

# File 'lib/babushka/cmdline/parser.rb', line 8

def opts
  @opts
end

8
9
10

# File 'lib/babushka/cmdline/parser.rb', line 8

def verb
  @verb
end

10
11
12
13
14
15
16
17
18

# File 'lib/babushka/cmdline/parser.rb', line 10

def self.for argv
  if argv.empty? || (%w[-h --help] & argv).any?
    new 'help', argv
  elsif !Handler.abbrev.has_key?(argv.first.sub(/^--/, ''))
    new 'meet', argv, :implicit_verb => true
  else
    new Handler.abbrev[argv.shift.sub(/^--/, '')], argv
  end
end

37
38
39

# File 'lib/babushka/cmdline/parser.rb', line 37

def parse &blk
  instance_eval(&blk)
end

33
34
35

# File 'lib/babushka/cmdline/parser.rb', line 33

def print_usage
  log parser.to_s.sub(/^Usage:.*$/, '')
end

26
27
28
29
30
31

# File 'lib/babushka/cmdline/parser.rb', line 26

def run
  parser.parse! argv
  Handler.for(verb).handler.call self
rescue OptionParser::ParseError => e
  log_error "The #{e.args.first} option #{error_reason(e)}. #{hint}"
end