Class: WGif::ArgumentParser

Inherits:
Object
  • Object
show all
Defined in:
lib/wgif/argument_parser.rb

Constant Summary collapse

DEFAULTS = 
{
  trim_from: '00:00:00',
  duration: 1.0,
  dimensions: '480'
}

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ArgumentParser

Returns a new instance of ArgumentParser.



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# File 'lib/wgif/argument_parser.rb', line 13

def initialize
  @options = {}
  @parser = OptionParser.new do |opts|
    opts.on('-f N',
            '--frames N',
            'Number of frames in the final gif. (Default 20)') {
      |n|  @options[:frames] = n.to_i
    }
    opts.on('-s HH:MM:SS.SSSS',
            '--start HH:MM:SS.SSSS',
            'Start creating gif from input video at this timestamp. (Default 00:00:00)') {
      |ts| @options[:trim_from] = ts
    }
    opts.on('-d seconds',
            '--duration seconds',
            'Number of seconds of input video to capture. (Default 1.0)') {
      |d|  @options[:duration] = d.to_f
    }
    opts.on('-w pixels',
            '--width pixels',
            'Width of the gif in pixels. (Default 480px)') {
      |gs| @options[:dimensions] = gs
    }
    opts.on('-u',
            '--upload',
            'Upload finished gif to Imgur') {
      |u| @options[:upload] = u
    }
    opts.on('-i',
            '--info',
            'Displays info about finished gif (currently just file size)') {
      |i| @options[:info] = i
    }
    opts.on('-p',
            '--preview',
            'Preview finished gif with Quick Look') {
      |p| @options[:preview] = p
    }
    opts.on_tail('-h',
                 '--help',
                 'Print help information.') {
      print_help
      exit
    }
    opts.on_tail('-v',
                 '--version',
                 'Print version.') {
      print_version
      exit
    }
  end
end

Instance Method Details

#argument_summary ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 76

def argument_summary
  @parser.summarize
end

#parse(args) ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 66

def parse(args)
  options = parse_args(args)
  validate(options)
  options
end

#parse_args(args) ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 80

def parse_args(args)
  options = DEFAULTS.merge(parse_options args)
  options.merge(url: args[0], output: args[1])
end

#parse_options(args) ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 85

def parse_options(args)
  @parser.parse! args
  @options
end

#print_help ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 94

def print_help
  puts 'Usage: wgif [YouTube URL] [output file] [options]', "\n"
  puts argument_summary, "\n"
  puts <<-example
Example:

$ wgif https://www.youtube.com/watch?v=1A78yTvIY1k bjork.gif -s 00:03:30 -d 2.2 -w 400 --upload

  example
end

#print_version ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 90

def print_version
  puts "wgif #{WGif::VERSION}"
end

#validate(args) ⇒ Object 



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# File 'lib/wgif/argument_parser.rb', line 72

def validate(args)
  WGif::Validator.new(args).validate
end