Module: ImgDl::Cli

Defined in:
lib/img_dl/cli.rb

Constant Summary collapse

CLEAR = 
case RUBY_PLATFORM  
when /win/i, /ming/i  
  "cls"
else  
  "clear"  
end
HELP = 
<<-HELP
Usage: img_dl [OPTION]... URL SAVEPATH

Search Images from URL and save to SAVEPATH.You can specified regular expression as a filter or set a limit num,etc.

Example: img_dl http://google.com /home/me/download/icons

OPTION:
  -r   Enable recursive search, when this option parsed you should option -ul or -il to limit search,otherwise the program maybe can't stop
  -ul  Limit recursive urls count, Only if you specified -r
  -il  Limit download images count
  -ur  Regex filter for recursive url, Example  -ur www.foo.bai\/\?page=\d+
  -ir  Regex filter for images,Example  -ir .gif$
  -pf  Save the file prefix
  -in  Interval, default value is 0
  -h   print this help
  -version  Print version
HELP
NOT_MATCH = 
"Arguments not match!"

Class Method Summary collapse

Class Method Details

.not_match ⇒ Object

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# File 'lib/img_dl/cli.rb', line 33

def not_match
  puts NOT_MATCH
  puts HELP
end

.parse_to_options(args) ⇒ Object

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# File 'lib/img_dl/cli.rb', line 46

def parse_to_options args
  case args.size
  when 0,1
    case args.first
    when '-h'
      puts HELP
    when '-version'
      puts VERSION
    else
      not_match
      exit 1
    end
  else
    save_path = args.pop
    url = args.pop
    options = {}
    options[:recursive] = args.delete '-r'
    if args.size.odd?
      not_match 
      exit 1
    end
    args.each_slice(2) do |opt,arg|
      case opt
      when '-ul'
        options[:url_limit_count] = arg.to_i
      when '-il'
        options[:image_limit_count] = arg.to_i
      when '-ur'
        options[:url_reg] = Regexp.new arg
      when '-ir'
        options[:image_reg] = Regexp.new arg
      when '-pf'
        options[:prefix] = arg
      when '-in'
        options[:interval] = arg.to_i
      else
        puts "option '#{opt}' not support! please check out img_dl -h"
      exit 1
      end
    end
    parser = ImgDl::Parser.new(url,save_path,options)
    Thread.start{parser.start;puts 'All done.';exit}
    parser
  end
end

.prompt(parser) ⇒ Object

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# File 'lib/img_dl/cli.rb', line 92

def prompt parser
  system CLEAR
  puts "url parser status: #{parser.status}"
  puts "downloader status: #{parser.dl_status}"
  puts "recursive urls: #{parser.url_count}"
  puts "images download queue: #{parser.image_count}"
  puts "downloaded images: #{parser.downloaded_image_count}"
  puts "successes: #{parser.success_download}"
  puts "errors: #{parser.error_urls.size}"
end

.run ⇒ Object

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# File 'lib/img_dl/cli.rb', line 103

def run
  parse_to_options ARGV
end

.valid_save_path(path) ⇒ Object

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# File 'lib/img_dl/cli.rb', line 38

def valid_save_path path
  FileUtils.mkdir_p path
end

.valid_url(url) ⇒ Object

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# File 'lib/img_dl/cli.rb', line 42

def valid_url url
  URI url
end