Class: DynamicImage::ImageReader
- Inherits:
-
Object
- Object
- DynamicImage::ImageReader
- Defined in:
- lib/dynamic_image/image_reader.rb
Instance Method Summary collapse
- #format ⇒ Object
-
#initialize(data) ⇒ ImageReader
constructor
A new instance of ImageReader.
- #read ⇒ Object
- #valid_header? ⇒ Boolean
Constructor Details
#initialize(data) ⇒ ImageReader
Returns a new instance of ImageReader.
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# File 'lib/dynamic_image/image_reader.rb', line 5 def initialize(data) @data = data end |
Instance Method Details
#format ⇒ Object
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# File 'lib/dynamic_image/image_reader.rb', line 9 def format DynamicImage::Format.sniff(file_header) end |
#read ⇒ Object
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# File 'lib/dynamic_image/image_reader.rb', line 13 def read raise DynamicImage::Errors::InvalidHeader unless valid_header? if @data.is_a?(String) Vips::Image.new_from_buffer(@data, option_string) else Vips::Image.new_from_file(@data.path + option_string, access: :random) end end |
#valid_header? ⇒ Boolean
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# File 'lib/dynamic_image/image_reader.rb', line 23 def valid_header? format ? true : false end |