Module: LaceArgvExtension

Defined in:
lib/extend/ARGV.rb

Overview

Copyright 2009-2014 Max Howell and other contributors.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Instance Method Summary collapse

Instance Method Details

#confirm?(prompt) ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 81

def confirm?(prompt)
  if flag?('--yes')
    true
  else
    print "#{prompt} [y/N] "
    $stdout.flush
    /y/i.match?(STDIN.gets)
  end
end

#debug? ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 51

def debug?
  flag? '--debug'
end

#flag?(flag) ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 67

def flag? flag
  options_only.any? do |arg|
    arg == flag || arg[1..1] != '-' && arg.include?(flag[2..2])
  end
end

#force? ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 59

def force?
  flag? '--force'
end

#include?(arg) ⇒ Boolean

self documenting perhaps?



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# File 'lib/extend/ARGV.rb', line 34

def include? arg
  @n=index arg
end

#interactive? ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 63

def interactive?
  flag? '--interactive'
end

#named ⇒ Object 



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# File 'lib/extend/ARGV.rb', line 25

def named
  @named ||= reject{|arg| arg[0..0] == '-'}
end

#next ⇒ Object 



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# File 'lib/extend/ARGV.rb', line 38

def next
  at @n+1 or raise UsageError
end

#nohooks? ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 55

def nohooks?
  flag? '--no-hooks'
end

#options_only ⇒ Object 



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# File 'lib/extend/ARGV.rb', line 29

def options_only
  select {|arg| arg[0..0] == '-'}
end

#switch?(switch_character) ⇒ Boolean

eg. ‘foo -ns -i –bar` has three switches, n, s and i



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# File 'lib/extend/ARGV.rb', line 74

def switch? switch_character
  return false if switch_character.length > 1
  options_only.any? do |arg|
    arg[1..1] != '-' && arg.include?(switch_character)
  end
end

#value(arg) ⇒ Object 



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# File 'lib/extend/ARGV.rb', line 42

def value arg
  arg = find {|o| o =~ /--#{arg}=(.+)/}
  $1 if arg
end

#verbose? ⇒ Boolean 



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# File 'lib/extend/ARGV.rb', line 47

def verbose?
  flag? '--verbose' or !ENV['VERBOSE'].nil?
end