Module: Vidibus::Fileinfo

Defined in:
lib/vidibus/fileinfo.rb,
lib/vidibus/fileinfo/base.rb,
lib/vidibus/fileinfo/version.rb,
lib/vidibus/fileinfo/processor/audio.rb,
lib/vidibus/fileinfo/processor/image.rb,
lib/vidibus/fileinfo/processor/video.rb

Defined Under Namespace

Modules: Processor Classes: Base, DataError, Error, FileAccessError, NoFileError, NoFormatError, PathError, ProcessorError, UnitError, UnsupportedFormatError

Constant Summary collapse

VERSION = 
'1.2.0'

Class Method Summary collapse

Class Method Details

.bytes(value) ⇒ Object

Converts given size string with unit to bytes number.

Example:

Vidibus::Fileinfo.bytes("0.23 MB") #=> 241172



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# File 'lib/vidibus/fileinfo.rb', line 52

def bytes(value)
  if value.is_a?(String)
    value =~ /([\d\.]+)\s*(\w*)/i
    size = $1.to_f
    unit = $2.strip.upcase if $2
    power = case unit
      when "B", ""   then 0
      when "K", "KB" then 1
      when "M", "MB" then 2
      when "G", "GB" then 3
      when "T", "TB" then 4
      else raise UnitError
    end
    factor = 1024**power
    (size*factor).round
  elsif value.is_a?(Float)
    value.round
  elsif value.is_a?(Integer)
    value
  else
    raise ArgumentError
  end
end

.format(path) ⇒ Object

Returns the format of a given file path. If no format can be detected, a NoFormatError will be raised.



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# File 'lib/vidibus/fileinfo.rb', line 39

def format(path)
  if path =~ /(?:\.)([a-z0-9]+)$/i
    $1.downcase
  else
    raise NoFormatError
  end
end

.formats ⇒ Object

Returns a list of processable formats.



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# File 'lib/vidibus/fileinfo.rb', line 27

def formats
  @formats ||= mapping.keys.sort
end

.processor(format) ⇒ Object

Returns a processor class for given format. If no processor matches, an UnsupportedFormatError will be raised.



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# File 'lib/vidibus/fileinfo.rb', line 33

def processor(format)
  mapping[format.to_s] or raise UnsupportedFormatError
end

.processors ⇒ Object

Returns a list of available processors.



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# File 'lib/vidibus/fileinfo.rb', line 22

def processors
  @processors ||= [Processor::Image, Processor::Video, Processor::Audio]
end