Class: UnpackStrategy::Dmg Private

Inherits:
Object show all
Extended by:
SystemCommand::Mixin, ClassMethods
Includes:
UnpackStrategy
Defined in:
unpack_strategy/dmg.rb

Overview

This class is part of a private API. This class may only be used in the Homebrew/brew repository. Third parties should avoid using this class if possible, as it may be removed or changed without warning.

Strategy for unpacking disk images.

Defined Under Namespace

Modules: Bom

Constant Summary

Constants included from UnpackStrategy

UnpackStrategyType

Instance Attribute Summary

Attributes included from UnpackStrategy

#merge_xattrs, #path

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SystemCommand::Mixin

system_command, system_command!

Methods included from ClassMethods

can_extract?, extensions

Methods included from UnpackStrategy

#dependencies, detect, #each_directory, #extract, #extract_nestedly, from_extension, from_magic, from_type, #initialize

Methods included from Utils::Output::Mixin

#issue_reporting_message, #odebug, #odeprecated, #odie, #odisabled, #ofail, #oh1, #oh1_title, #ohai, #ohai_title, #onoe, #opoo, #opoo_outside_github_actions, #opoo_without_github_actions_annotation, #pretty_deprecated, #pretty_disabled, #pretty_duration, #pretty_install_status, #pretty_installed, #pretty_uninstalled, #pretty_unmarked, #pretty_upgradable, #pretty_warning

Class Method Details

.can_extract?(path) ⇒ Boolean

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:

  • (Boolean) 


181
182
183
184
 
# File 'unpack_strategy/dmg.rb', line 181

def self.can_extract?(path)
  stdout, _, status = system_command("hdiutil", args: ["imageinfo", "-format", path], print_stderr: false).to_a
  (status.success? && !stdout.empty?) || false
end

.extensions ⇒ Array<String>

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Returns:



176
177
178
 
# File 'unpack_strategy/dmg.rb', line 176

def self.extensions
  [".dmg"]
end

Instance Method Details

#mount(verbose: false, &_block) ⇒ void

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

This method returns an undefined value.

Parameters:

  • verbose (Boolean) (defaults to: false)
  • _block (T.proc.params(arg0: T::Array[Mount]).void) 


187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
 
# File 'unpack_strategy/dmg.rb', line 187

def mount(verbose: false, &_block)
  Dir.mktmpdir("homebrew-dmg", HOMEBREW_TEMP) do |mount_dir|
    mount_dir = Pathname(mount_dir)

    without_eula = system_command(
      "hdiutil",
      args:         [
        "attach", "-plist", "-nobrowse", "-readonly",
        "-mountrandom", mount_dir, path
      ],
      input:        "qn\n",
      print_stderr: false,
      verbose:,
    )

    # If mounting without agreeing to EULA succeeded, there is none.
    plist = if without_eula.success?
      without_eula.plist
    else
      without_eula.assert_success! if without_eula.stdout.empty?

      cdr_path = mount_dir/path.basename.sub_ext(".cdr")

      quiet_flag = "-quiet" unless verbose

      system_command!(
        "hdiutil",
        args:    [
          "convert", *quiet_flag, "-format", "UDTO", "-o", cdr_path, path
        ],
        verbose:,
      )

      with_eula = system_command!(
        "hdiutil",
        args:    [
          "attach", "-plist", "-nobrowse", "-readonly",
          "-mountrandom", mount_dir, cdr_path
        ],
        verbose:,
      )

      if verbose && !(eula_text = without_eula.stdout).empty?
        ohai "Software License Agreement for '#{path}':", eula_text
      end

      with_eula.plist
    end

    mounts = if plist.respond_to?(:fetch)
      plist.fetch("system-entities", [])
           .filter_map { |entity| entity["mount-point"] }
           .map { |path| Mount.new(path) }
    else
      []
    end

    begin
      yield mounts
    ensure
      mounts.each do |mount|
        mount.eject(verbose:)
      end
    end
  end
end