Class: MicroExiftool::File

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

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ File

Returns a new instance of File.



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# File 'lib/micro_exiftool/file.rb', line 12

def initialize(path)
  @path = path.to_s
  unless ::File.exist?(@path)
    raise NoSuchFile.new("No such file: #{@path}")
  end
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/micro_exiftool/file.rb', line 19

def [](key)
  file_attributes[key]
end

#attributes ⇒ Object 



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# File 'lib/micro_exiftool/file.rb', line 23

def attributes
  file_attributes.dup
end

#update!(new_attributes) ⇒ Object 



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# File 'lib/micro_exiftool/file.rb', line 27

def update!(new_attributes)
  update_json = [new_attributes.merge('SourceFile' => @path)].to_json

  run_exiftool(
    '-P',                     # dont change timestamp of file
    '-G0',                    # prefix all attributes with "EXIF:", "ITCP:" etc
    '-overwrite_original',    # dont make a backup copy
    '-j=-',                   # read new attributes from stdin as json
    stdin_data: update_json
  )

  @file_attributes = nil
  true
end