Class: RTesseract::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/rtesseract/command.rb

Constant Summary collapse

FIXED = 
[:command, :psm, :oem, :lang, :tessdata_dir, :user_words, :user_patterns, :config_file]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source, output, options) ⇒ Command

Returns a new instance of Command.



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# File 'lib/rtesseract/command.rb', line 7

def initialize(source, output, options)
  @source = source
  @output = output
  @options = options
  @full_command = [ options.command, @source, @output]
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/rtesseract/command.rb', line 5

def options
  @options
end

Instance Method Details

#add_option(*args) ⇒ Object 



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# File 'lib/rtesseract/command.rb', line 29

def add_option(*args)
  return unless args.last

  @full_command << args.map(&:to_s)
end

#full_command ⇒ Object 



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# File 'lib/rtesseract/command.rb', line 14

def full_command
  add_option('--psm', options.psm)
  add_option('--oem', options.oem)
  add_option('-l', options.lang)
  add_option('--tessdata_dir', options.tessdata_dir)
  add_option('--user_words', options.user_words)
  add_option('--user_patterns', options.user_patterns)

  other_configs

  add_option(options.config_file)

  @full_command
end

#other_configs ⇒ Object 



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# File 'lib/rtesseract/command.rb', line 35

def other_configs
  @options.to_h.map do |key, value|
    next if FIXED.include?(key)

    add_option('-c', "#{key}=#{value}")
  end
end

#run ⇒ Object

Raises:



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# File 'lib/rtesseract/command.rb', line 43

def run
  output, status = Open3.capture2e(*full_command.flatten)

  return output if status.success?

  raise RTesseract::Error.new(output)
end