Class: ImageGenie::Identify

Inherits:
Command
  • Object
show all
Defined in:
lib/image_genie/identify.rb

Class Method Summary collapse

Methods inherited from Command

handle_errors

Class Method Details

.run(filename, options = {}) ⇒ Object

Raises:



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# File 'lib/image_genie/identify.rb', line 5

def self.run(filename, options={})
  raise(UnableToLocateBinaryError, 'identify') if path_for(:identify).blank?

  begin
    raise Errno::ENOENT,"#{filename}" unless File.exists?(filename)
  rescue Errno::ENOENT => e
    logger.error("#{self.name} #{e.message}")
    raise
  end

  command = "#{path_for(:identify)} #{filename}"
  output = ''

  # We test for STDERR content
  execute(command) do |pid,stdin,stdout,stderr|
    while !stdout.eof?
      output += stdout.readline
    end

    ignored, status = Process::waitpid2 pid
    handle_errors(stderr,status,IdentifyError)
  end

  fields = [:filename,:format,:dimensions,:geometry,:bit,:image_class,:colors,:filesize,:usertime,:identify_time]                    
  return Hash[fields.zip(stdout.read.split(' '))]
end