Class: MiniMagick::CommandBuilder

Inherits:

Object

• Object
• MiniMagick::CommandBuilder

show all

Defined in:

lib/mini_magick.rb

Instance Attribute Summary (collapse)

• - (Object) args readonly

  Returns the value of attribute args.

• - (Object) command readonly

  Returns the value of attribute command.

Instance Method Summary (collapse)

• - (Object) +(*options)
• - (Object) add_command(command, *options)
• - (Object) add_creation_operator(command, *options)
• - (Object) escape_string(value)
• - (CommandBuilder) initialize(command, *options) constructor

  A new instance of CommandBuilder.

• - (Object) method_missing(symbol, *options)
• - (Object) push(arg) (also: #<<)

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# File 'lib/mini_magick.rb', line 447

def initialize(command, *options)
  @command = command
  @args = []
  options.each { |arg| push(arg) }
end

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# File 'lib/mini_magick.rb', line 457

def method_missing(symbol, *options)
  guessed_command_name = symbol.to_s.gsub('_','-')
  if guessed_command_name == "format"
    raise Error, "You must call 'format' on the image object directly!"
  elsif MOGRIFY_COMMANDS.include?(guessed_command_name)
    add_command(guessed_command_name, *options)
    self
  elsif IMAGE_CREATION_OPERATORS.include?(guessed_command_name)
    add_creation_operator(guessed_command_name, *options)
    self
  else
    super(symbol, *args)
  end
end

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# File 'lib/mini_magick.rb', line 444

def args
  @args
end

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# File 'lib/mini_magick.rb', line 445

def command
  @command
end

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# File 'lib/mini_magick.rb', line 472

def +(*options)
  push(@args.pop.gsub(/^-/, '+'))
  if options.any?
    options.each do |o|
      push escape_string(o)
    end
  end
end

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# File 'lib/mini_magick.rb', line 481

def add_command(command, *options)
  push "-#{command}"
  if options.any?
    options.each do |o|
      push escape_string(o)
    end
  end
end

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# File 'lib/mini_magick.rb', line 494

def add_creation_operator(command, *options)
  creation_command = command
  if options.any?
    options.each do |option|
      creation_command << ":#{option}"
    end
  end
  push creation_command
end

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# File 'lib/mini_magick.rb', line 490

def escape_string(value)
  Shellwords.escape(value.to_s)
end

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# File 'lib/mini_magick.rb', line 504

def push(arg)
  @args << arg.to_s.strip
end