Class: Identify::Image::PBM

Inherits:
Identify::Image show all
Defined in:
lib/identify.rb

Overview

BMP

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Identify::Image

#as_hash, formats, identify, inherited, parse

Class Method Details

.handle?(data) ⇒ Boolean

Returns:

  • (Boolean) 


98
99
100
 
# File 'lib/identify.rb', line 98

def self.handle? data
  %r{\AP[1-6]}.match(data)
end

Instance Method Details

#format(type) ⇒ Object 



107
108
109
110
111
112
113
 
# File 'lib/identify.rb', line 107

def format type
  case type
    when 'P1', 'P4' then 'pbm'
    when 'P2', 'P5' then 'pgm'
    when 'P3', 'P6' then 'ppm'
  end
end

#parse(data) ⇒ Object 



102
103
104
105
 
# File 'lib/identify.rb', line 102

def parse data
  type, dims = data[0..4096].split(/\n+/).reject {|line| %r{\A#}.match(line)}.take(2)
  as_hash format(type), *dims.split(/\s+/)
end