Module: HDIUtil

Defined in:
lib/iesd/utility/hdiutil.rb,
lib/iesd/utility/hdiutil.rb

Overview

:nodoc:

Defined Under Namespace

Classes: DMG

Constant Summary collapse

DEFAULT_OPTIONS =

The default options for hdiutil.

%w[ -quiet ]
DEFAULT_MOUNT_OPTIONS =

The default options for hdiutil attach.

%w[ -nobrowse -noverify ]

Class Method Summary collapse

Class Method Details

.read(input) ⇒ Object

Perform read-only actions on the input image.

If a block is given the block will be yielded with the path of the mount point directory, otherwise a shell will be open.

input - The String path to the input image.



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# File 'lib/iesd/utility/hdiutil.rb', line 22

def self.read input
  Dir.mktmpdir { |mountpoint|
    attach input, mountpoint, [*DEFAULT_OPTIONS, *DEFAULT_MOUNT_OPTIONS]
    if block_given?
      yield mountpoint
    else
      shell mountpoint
    end
    detach input, mountpoint, [*DEFAULT_OPTIONS]
  }
end

.validate(url) ⇒ Object

Returns true if the image is valid, false otherwise.

url - The String path to the image.



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# File 'lib/iesd/utility/hdiutil.rb', line 75

def self.validate url
  Kernel.system(%Q[/usr/bin/env hdiutil imageinfo #{url.shellescape} >/dev/null 2>&1])
end

.write(input, output, options = {}) ⇒ Object

Perform read-write actions on the input image and export as the output image.

If a block is given the block will be yielded with the path of the mount point directory, otherwise a shell will be open.

input - The String path to the input image. output - The String path to the output image. options - The Dictionary of hdiutil options.



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# File 'lib/iesd/utility/hdiutil.rb', line 41

def self.write input, output, options = {}
  options = {
    :resize => {
      :grow => 0,
      :shrink => false
    }
  }.merge(options)

  Dir.mktmpdir { |tmp|
    shadow = File.join(tmp, "#{File.basename input}.shadow")
    shadow_options = ["-shadow", shadow]
    format_options = ["-format", `/usr/bin/env hdiutil imageinfo -format #{input.shellescape}`.chomp]
    Dir.mktmpdir(nil, tmp) { |mountpoint|
      resize_limits = `/usr/bin/env hdiutil resize -limits -shadow #{shadow.shellescape} #{input.shellescape}`.chomp.split.map { |s| s.to_i }
      sectors = (resize_limits[1] + options[:resize][:grow]).to_s
      system("/usr/bin/env", "hdiutil", "resize", "-growonly", "-sectors", sectors, *shadow_options, input)
      attach input, mountpoint, [*DEFAULT_OPTIONS, *DEFAULT_MOUNT_OPTIONS, *shadow_options]
      if block_given?
        yield mountpoint
      else
        shell mountpoint
      end
      detach input, mountpoint, [*DEFAULT_OPTIONS]
      system("/usr/bin/env", "hdiutil", "resize", "-shrinkonly", "-sectors", "min", *shadow_options, input) if options[:resize][:shrink]
    }
    oh1 "Merging #{shadow}"
    system("/usr/bin/env", "hdiutil", "convert", *DEFAULT_OPTIONS, *format_options, *shadow_options, "-o", output, input)
    puts "Merged: #{output}"
  }
end