Class: VCSRuby::Tools

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

Defined Under Namespace

Classes: MagickVersion

Class Method Summary collapse

Class Method Details

.contact_sheet_with_options(video, options) ⇒ Object 



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# File 'lib/tools.rb', line 32

def self.contact_sheet_with_options video, options
  Configuration.instance.load_profile options[:profile] if options[:profile]
  Configuration.instance.capturer = options[:capturer]

  video = VCSRuby::Video.new video
  
  unless video.valid?
    puts "Video '#{video.full_path}' cannot be read by Capturer '#{video.capturer_name}'"
    return nil
  end
  
  sheet = video.contact_sheet

  sheet.format = options[:format] if options[:format]
  sheet.title = options[:title] if options[:title]
  sheet.signature = options[:signature] if options[:signature]
  sheet.signature = nil if options[:no_signature]

  if options[:rows] || options[:columns] || options[:interval]
    sheet.initialize_geometry(options[:rows], options[:columns], options[:interval])
  end

  if options[:width] && options[:height]
    sheet.aspect_ratio = Rational(options[:width], options[:height])
  else
    sheet.aspect_ratio = options[:aspect_ratio] if options[:aspect_ratio]      
  end
  sheet.thumbnail_width = options[:width] if options[:width]
  sheet.thumbnail_height = options[:height] if options[:height]
  sheet.from = options[:from] if options[:from]
  sheet.to = options[:to] if options[:to]
  sheet.highlight = options[:highlight] if options[:highlight]

  sheet.timestamp = options[:timestamp] if options[:timestamp] != nil
  sheet.softshadow = options[:softshadow] if options[:softshadow] != nil
  sheet.polaroid = options[:polaroid] if options[:polaroid] != nil

  return sheet
end

.linux? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tools.rb', line 12

def self.linux?
  return ((RUBY_PLATFORM =~ /linux/) or (RbConfig::CONFIG['host_os'] =~ /linux/i))
end

.list_arguments(arguments) ⇒ Object 



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# File 'lib/tools.rb', line 16

def self.list_arguments arguments
  arguments.map{ |argument| argument.to_s }.join(', ')
end

.magick_version ⇒ Object 



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# File 'lib/tools.rb', line 26

def self.magick_version
  output = %x[convert -version]
  m = output.match(/(\d+)\.(\d+)\.(\d+)(-(\d+))?/)
  MagickVersion.new(m[1].to_i, m[2].to_i, m[3].to_i)
end

.print_help(optparse) ⇒ Object 



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# File 'lib/tools.rb', line 20

def self.print_help optparse
  puts optparse.summarize
  exit 0
end

.to_human_size(size) ⇒ Object 



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# File 'lib/tools.rb', line 72

def self.to_human_size size
  powers = { 'B'  => 1 << 10, 'KiB' => 1 << 20, 'MiB' => 1 << 30, 'GiB' => 1 << 40, 'TiB' => 1 << 50 }
  powers.each_pair do |prefix, power|
    if size < power
      return format('%.2f',size.to_f / (power >> 10)) + ' ' + prefix
    end
  end
end

.windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tools.rb', line 8

def self.windows?
  return ((RUBY_PLATFORM =~ /win32/ or RUBY_PLATFORM =~ /mingw32/) or (RbConfig::CONFIG['host_os'] =~ /mswin|windows/i))
end