Class: Keg

Inherits:
Object show all
Extended by:
Cachable, Forwardable
Defined in:
extend/os/mac/keg.rb,
extend/os/linux/keg.rb,
extend/os/mac/keg_relocate.rb,
extend/os/linux/keg_relocate.rb,
keg.rb,
os/mac/keg.rb,
keg_relocate.rb

Defined Under Namespace

Classes: AlreadyLinkedError, ConflictError, DirectoryNotWritableError, LinkError, Relocation

Constant Summary collapse 

(remove_const :KEG_LINK_DIRECTORIES).freeze
%w[
  bin etc include lib sbin share var
].freeze
GENERIC_MUST_EXIST_SUBDIRECTORIES = 
(remove_const :MUST_EXIST_SUBDIRECTORIES).freeze
MUST_EXIST_SUBDIRECTORIES =

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

(
  KEG_LINK_DIRECTORIES - %w[var] + %w[
    opt
    var/homebrew/linked
  ]
).map { |dir| HOMEBREW_PREFIX/dir }.sort.uniq.freeze
GENERIC_MUST_EXIST_DIRECTORIES = 
(remove_const :MUST_EXIST_DIRECTORIES).freeze
MUST_EXIST_DIRECTORIES =

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

Keep relatively in sync with https://github.com/Homebrew/install/blob/HEAD/install.sh

(MUST_EXIST_SUBDIRECTORIES + [
  HOMEBREW_CELLAR,
].sort.uniq).freeze
GENERIC_MUST_BE_WRITABLE_DIRECTORIES = 
(remove_const :MUST_BE_WRITABLE_DIRECTORIES).freeze
MUST_BE_WRITABLE_DIRECTORIES =

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

(
  %w[
    etc/bash_completion.d lib/pkgconfig
    share/aclocal share/doc share/info share/locale share/man
    share/man/man1 share/man/man2 share/man/man3 share/man/man4
    share/man/man5 share/man/man6 share/man/man7 share/man/man8
    share/zsh share/zsh/site-functions
    var/log
  ].map { |dir| HOMEBREW_PREFIX/dir } + MUST_EXIST_SUBDIRECTORIES + [
    HOMEBREW_CACHE,
    HOMEBREW_CELLAR,
    HOMEBREW_LOCKS,
    HOMEBREW_LOGS,
    HOMEBREW_REPOSITORY,
    Language::Python.homebrew_site_packages,
  ]
).sort.uniq.freeze
VARIABLE_REFERENCE_RX = 
/^@(loader_|executable_|r)path/.freeze
FRAMEWORK_RX =

Matches framework references like XXX.framework/Versions/YYY/XXX and XXX.framework/XXX, both with or without a slash-delimited prefix.

%r{(?:^|/)(([^/]+)\.framework/(?:Versions/[^/]+/)?\2)$}.freeze
LOCALEDIR_RX =

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

Locale-specific directories have the form language[_territory][.codeset][@modifier]

%r{(locale|man)/([a-z]{2}|C|POSIX)(_[A-Z]{2})?(\.[a-zA-Z\-0-9]+(@.+)?)?}.freeze
INFOFILE_RX =

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

%r{info/([^.].*?\.info|dir)$}.freeze
SHARE_PATHS =

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

These paths relative to the keg’s share directory should always be real directories in the prefix, never symlinks.

%w[
  aclocal doc info java locale man
  man/man1 man/man2 man/man3 man/man4
  man/man5 man/man6 man/man7 man/man8
  man/cat1 man/cat2 man/cat3 man/cat4
  man/cat5 man/cat6 man/cat7 man/cat8
  applications gnome gnome/help icons
  mime-info pixmaps sounds postgresql
].freeze
ELISP_EXTENSIONS =

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

%w[.el .elc].freeze
PYC_EXTENSIONS =

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

%w[.pyc .pyo].freeze
LIBTOOL_EXTENSIONS =

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

%w[.la .lai].freeze
PREFIX_PLACEHOLDER = 
"@@HOMEBREW_PREFIX@@"
CELLAR_PLACEHOLDER = 
"@@HOMEBREW_CELLAR@@"
REPOSITORY_PLACEHOLDER = 
"@@HOMEBREW_REPOSITORY@@"
LIBRARY_PLACEHOLDER = 
"@@HOMEBREW_LIBRARY@@"
PERL_PLACEHOLDER = 
"@@HOMEBREW_PERL@@"
JAVA_PLACEHOLDER = 
"@@HOMEBREW_JAVA@@"
NULL_BYTE = 
"\x00"
NULL_BYTE_STRING = 
"\\x00"
JAVA_REGEX = 
%r{#{HOMEBREW_PREFIX}/opt/openjdk(@\d+(\.\d+)*)?/libexec(/openjdk\.jdk/Contents/Home)?}.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Cachable

cache, clear_cache

Constructor Details

#initialize(path) ⇒ Keg

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 a new instance of Keg.



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# File 'keg.rb', line 161

def initialize(path)
  path = path.resolved_path if path.to_s.start_with?("#{HOMEBREW_PREFIX}/opt/")
  raise "#{path} is not a valid keg" if path.parent.parent.realpath != HOMEBREW_CELLAR.realpath
  raise "#{path} is not a directory" unless path.directory?

  @path = path
  @name = path.parent.basename.to_s
  @linked_keg_record = HOMEBREW_LINKED_KEGS/name
  @opt_record = HOMEBREW_PREFIX/"opt/#{name}"
  @oldname_opt_records = []
  @require_relocation = false
end

Instance Attribute Details

#linked_keg_record ⇒ Object (readonly)

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. 



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# File 'keg.rb', line 151

def linked_keg_record
  @linked_keg_record
end

#name ⇒ Object (readonly)

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. 



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# File 'keg.rb', line 151

def name
  @name
end

#opt_record ⇒ Object (readonly)

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. 



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# File 'keg.rb', line 151

def opt_record
  @opt_record
end

Class Method Details

.all ⇒ Object

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. 



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# File 'keg.rb', line 147

def self.all
  Formula.racks.flat_map(&:subdirs).map { |d| new(d) }
end

.file_linked_libraries(_file, _string) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 8

def file_linked_libraries(file, string)
  # Check dynamic library linkage. Importantly, do not perform for static
  # libraries, which will falsely report "linkage" to themselves.
  if file.mach_o_executable? || file.dylib? || file.mach_o_bundle?
    file.dynamically_linked_libraries.select { |lib| lib.include? string }
  else
    []
  end
end

.for(path) ⇒ Object

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:

  • path —

    if this is a file in a keg, returns the containing Keg object.

Raises:

  • (Errno::ENOENT) 


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# File 'keg.rb', line 133

def self.for(path)
  original_path = path
  raise Errno::ENOENT, original_path.to_s unless original_path.exist?

  if (path = original_path.realpath)
    until path.root?
      return Keg.new(path) if path.parent.parent == HOMEBREW_CELLAR.realpath

      path = path.parent.realpath # realpath() prevents root? failing
    end
  end
  raise NotAKegError, "#{original_path} is not inside a keg"
end

.text_matches_in_file(file, string, ignores, linked_libraries, formula_and_runtime_deps_names) ⇒ Object 



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# File 'keg_relocate.rb', line 325

def self.text_matches_in_file(file, string, ignores, linked_libraries, formula_and_runtime_deps_names)
  text_matches = []
  path_regex = Relocation.path_to_regex(string)
  Utils.popen_read("strings", "-t", "x", "-", file.to_s) do |io|
    until io.eof?
      str = io.readline.chomp
      next if ignores.any? { |i| i =~ str }
      next unless str.match? path_regex

      offset, match = str.split(" ", 2)

      # Some binaries contain strings with lists of files
      # e.g. `/usr/local/lib/foo:/usr/local/share/foo:/usr/lib/foo`
      # Each item in the list should be checked separately
      match.split(":").each do |sub_match|
        # Not all items in the list may be matches
        next unless sub_match.match? path_regex
        next if linked_libraries.include? sub_match # Don't bother reporting a string if it was found by otool

        # Do not report matches to files that do not exist.
        next unless File.exist? sub_match

        # Do not report matches to build dependencies.
        if formula_and_runtime_deps_names.present?
          begin
            keg_name = Keg.for(Pathname.new(sub_match)).name
            next unless formula_and_runtime_deps_names.include? keg_name
          rescue NotAKegError
            nil
          end
        end

        text_matches << [match, offset] unless text_matches.any? { |text| text.last == offset }
      end
    end
  end
  text_matches
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql?

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. 



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# File 'keg.rb', line 185

def ==(other)
  instance_of?(other.class) && path == other.path
end

#aliases ⇒ Object

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. 



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# File 'keg.rb', line 509

def aliases
  tab.aliases || []
end

#apps ⇒ Array<Pathname>

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:



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# File 'keg.rb', line 374

def apps
  app_prefix = optlinked? ? opt_record : path
  Pathname.glob("#{app_prefix}/{,libexec/}*.app")
end

#binary_executable_or_library_files ⇒ Object

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. 



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# File 'extend/os/mac/keg.rb', line 25

def binary_executable_or_library_files
  mach_o_files
end

#binary_file?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'keg_relocate.rb', line 243

def binary_file?(file)
  grep_bin, grep_args = egrep_args

  # We need to pass NULL_BYTE_STRING, the literal string "\x00", to grep
  # rather than NULL_BYTE, a literal null byte, because grep will internally
  # convert the literal string "\x00" to a null byte.
  Utils.popen_read(grep_bin, *grep_args, NULL_BYTE_STRING, file).present?
end

#change_dylib_id(id, file) ⇒ Boolean

Parameters:

Returns:

  • (Boolean) 


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# File 'os/mac/keg.rb', line 6

def change_dylib_id(id, file)
  return false if file.dylib_id == id

  @require_relocation = true
  odebug "Changing dylib ID of #{file}\n  from #{file.dylib_id}\n    to #{id}"
  file.change_dylib_id(id, strict: false)
  true
rescue MachO::MachOError
  onoe <<~EOS
    Failed changing dylib ID of #{file}
      from #{file.dylib_id}
        to #{id}
  EOS
  raise
end

#change_install_name(old, new, file) ⇒ Boolean

Parameters:

Returns:

  • (Boolean) 


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# File 'os/mac/keg.rb', line 23

def change_install_name(old, new, file)
  return false if old == new

  @require_relocation = true
  odebug "Changing install name in #{file}\n  from #{old}\n    to #{new}"
  file.change_install_name(old, new, strict: false)
  true
rescue MachO::MachOError
  onoe <<~EOS
    Failed changing install name in #{file}
      from #{old}
        to #{new}
  EOS
  raise
end

#change_rpath(old, new, file) ⇒ Object 



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# File 'extend/os/linux/keg_relocate.rb', line 20

def change_rpath(file, old_prefix, new_prefix)
  return false if !file.elf? || !file.dynamic_elf?

  updated = {}
  old_rpath = file.rpath
  new_rpath = if old_rpath
    rpath = old_rpath.split(":")
                     .map { |x| x.sub(old_prefix, new_prefix) }
                     .select { |x| x.start_with?(new_prefix, "$ORIGIN") }

    lib_path = "#{new_prefix}/lib"
    rpath << lib_path unless rpath.include? lib_path

    # Add GCC's lib directory (as of GCC 12+) to RPATH when there is existing versioned linkage.
    # This prevents broken linkage when pouring bottles built with an old GCC formula.
    unless name.match?(Version.formula_optionally_versioned_regex(:gcc))
      rpath.map! { |rp| rp.sub(%r{lib/gcc/\d+$}, "lib/gcc/current") }
    end

    rpath.join(":")
  end
  updated[:rpath] = new_rpath if old_rpath != new_rpath

  old_interpreter = file.interpreter
  new_interpreter = if old_interpreter.nil?
    nil
  elsif File.readable? "#{new_prefix}/lib/ld.so"
    "#{new_prefix}/lib/ld.so"
  else
    old_interpreter.sub old_prefix, new_prefix
  end
  updated[:interpreter] = new_interpreter if old_interpreter != new_interpreter

  file.patch!(interpreter: updated[:interpreter], rpath: updated[:rpath])
  true
end

#codesign_patched_binary(file) ⇒ Object

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. 



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# File 'extend/os/mac/keg.rb', line 29

def codesign_patched_binary(file)
  return if MacOS.version < :big_sur

  unless Hardware::CPU.arm?
    result = system_command("codesign", args: ["--verify", file], print_stderr: false)
    return unless result.stderr.match?(/invalid signature/i)
  end

  odebug "Codesigning #{file}"
  prepare_codesign_writable_files(file) do
    # Use quiet_system to squash notifications about resigning binaries
    # which already have valid signatures.
    return if quiet_system("codesign", "--sign", "-", "--force",
                           "--preserve-metadata=entitlements,requirements,flags,runtime",
                           file)

    # If the codesigning fails, it may be a bug in Apple's codesign utility
    # A known workaround is to copy the file to another inode, then move it back
    # erasing the previous file. Then sign again.
    #
    # TODO: remove this once the bug in Apple's codesign utility is fixed
    Dir::Tmpname.create("workaround") do |tmppath|
      FileUtils.cp file, tmppath
      FileUtils.mv tmppath, file, force: true
    end

    # Try signing again
    odebug "Codesigning (2nd try) #{file}"
    result = system_command("codesign", args: [
      "--sign", "-", "--force",
      "--preserve-metadata=entitlements,requirements,flags,runtime",
      file
    ], print_stderr: false)
    return if result.success?

    # If it fails again, error out
    onoe <<~EOS
      Failed applying an ad-hoc signature to #{file}:
      #{result.stderr}
    EOS
  end
end

#completion_installed?(shell) ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 335

def completion_installed?(shell)
  dir = case shell
  when :bash then path/"etc/bash_completion.d"
  when :zsh
    dir = path/"share/zsh/site-functions"
    dir if dir.directory? && dir.children.any? { |f| f.basename.to_s.start_with?("_") }
  when :fish then path/"share/fish/vendor_completions.d"
  end
  dir&.directory? && !dir.children.empty?
end

#consistent_reproducible_symlink_permissions! ⇒ Object

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.

Needed to make symlink permissions consistent on macOS and Linux for reproducible bottles.



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# File 'extend/os/mac/keg.rb', line 114

def consistent_reproducible_symlink_permissions!
  path.find do |file|
    File.lchmod 0777, file if file.symlink?
  end
end

#delete_pyc_files! ⇒ Object

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. 



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# File 'keg.rb', line 528

def delete_pyc_files!
  path.find { |pn| pn.delete if PYC_EXTENSIONS.include?(pn.extname) }
  path.find { |pn| FileUtils.rm_rf pn if pn.basename.to_s == "__pycache__" }
end

#delete_rpath(rpath, file) ⇒ Boolean

Parameters:

Returns:

  • (Boolean) 


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# File 'os/mac/keg.rb', line 56

def delete_rpath(rpath, file)
  odebug "Deleting rpath #{rpath} in #{file}"
  file.delete_rpath(rpath, strict: false)
  true
rescue MachO::MachOError
  onoe <<~EOS
    Failed deleting rpath #{rpath} in #{file}
  EOS
  raise
end

#detect_cxx_stdlibs(_options = {}) ⇒ Object 



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# File 'extend/os/linux/keg_relocate.rb', line 57

def detect_cxx_stdlibs(options = {})
  skip_executables = options.fetch(:skip_executables, false)
  results = Set.new
  elf_files.each do |file|
    next unless file.dynamic_elf?
    next if file.binary_executable? && skip_executables

    dylibs = file.dynamically_linked_libraries
    results << :libcxx if dylibs.any? { |s| s.include? "libc++.so" }
    results << :libstdcxx if dylibs.any? { |s| s.include? "libstdc++.so" }
  end
  results.to_a
end

#dylib_id_for(file) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 141

def dylib_id_for(file)
  # The new dylib ID should have the same basename as the old dylib ID, not
  # the basename of the file itself.
  basename = File.basename(file.dylib_id)
  relative_dirname = file.dirname.relative_path_from(path)
  (opt_record/relative_dirname/basename).to_s
end

#each_linkage_for(file, linkage_type, resolve_variable_references: false, &block) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 135

def each_linkage_for(file, linkage_type, resolve_variable_references: false, &block)
  file.public_send(linkage_type, resolve_variable_references: resolve_variable_references)
      .grep_v(VARIABLE_REFERENCE_RX)
      .each(&block)
end

#each_unique_file_matching(string) ⇒ Object 



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# File 'keg_relocate.rb', line 227

def each_unique_file_matching(string)
  Utils.popen_read("fgrep", recursive_fgrep_args, string, to_s) do |io|
    hardlinks = Set.new

    until io.eof?
      file = Pathname.new(io.readline.chomp)
      # Don't return symbolic links.
      next if file.symlink?

      # To avoid returning hardlinks, only return files with unique inodes.
      # Hardlinks will have the same inode as the file they point to.
      yield file if hardlinks.add? file.stat.ino
    end
  end
end

#egrep_args ⇒ Object Also known as: generic_egrep_args 



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# File 'extend/os/mac/keg_relocate.rb', line 228

def egrep_args
  grep_bin = "egrep"
  grep_args = "--files-with-matches"
  [grep_bin, grep_args]
end

#elf_files ⇒ Object 



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# File 'extend/os/linux/keg_relocate.rb', line 71

def elf_files
  hardlinks = Set.new
  elf_files = []
  path.find do |pn|
    next if pn.symlink? || pn.directory?
    next if !pn.dylib? && !pn.binary_executable?

    # If we've already processed a file, ignore its hardlinks (which have the
    # same dev ID and inode). This prevents relocations from being performed
    # on a binary more than once.
    next unless hardlinks.add? [pn.stat.dev, pn.stat.ino]

    elf_files << pn
  end
  elf_files
end

#elisp_installed? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 379

def elisp_installed?
  return false unless (path/"share/emacs/site-lisp"/name).exist?

  (path/"share/emacs/site-lisp"/name).children.any? { |f| ELISP_EXTENSIONS.include? f.extname }
end

#empty_installation? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 191

def empty_installation?
  Pathname.glob("#{path}/*") do |file|
    return false if file.directory? && !file.children.reject(&:ds_store?).empty?

    basename = file.basename.to_s
    next if Metafiles.copy?(basename)
    next if %w[.DS_Store INSTALL_RECEIPT.json].include?(basename)

    return false
  end

  true
end

#find_dylib(bad_name) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 172

def find_dylib(bad_name)
  return unless lib.directory?

  suffix = "/#{find_dylib_suffix_from(bad_name)}"
  lib.find { |pn| break pn if pn.to_s.end_with?(suffix) }
end

#find_dylib_suffix_from(bad_name) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 164

def find_dylib_suffix_from(bad_name)
  if (framework = bad_name.match(FRAMEWORK_RX))
    framework[1]
  else
    File.basename(bad_name)
  end
end

#fix_dynamic_linkage ⇒ Object Also known as: generic_fix_dynamic_linkage 



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# File 'extend/os/mac/keg_relocate.rb', line 51

def fix_dynamic_linkage
  mach_o_files.each do |file|
    file.ensure_writable do
      modified = T.let(false, T::Boolean)
      needs_codesigning = T.let(false, T::Boolean)

      modified = change_dylib_id(dylib_id_for(file), file) if file.dylib?
      needs_codesigning ||= modified

      each_linkage_for(file, :dynamically_linked_libraries) do |bad_name|
        # Don't fix absolute paths unless they are rooted in the build directory.
        new_name = if bad_name.start_with?("/") && !rooted_in_build_directory?(bad_name)
          bad_name
        else
          fixed_name(file, bad_name)
        end
        loader_name = loader_name_for(file, new_name)
        modified = change_install_name(bad_name, loader_name, file) if loader_name != bad_name
        needs_codesigning ||= modified
      end

      each_linkage_for(file, :rpaths) do |bad_name|
        new_name = opt_name_for(bad_name)
        loader_name = loader_name_for(file, new_name)
        next if loader_name == bad_name

        modified = change_rpath(bad_name, loader_name, file)
        needs_codesigning ||= modified
      end

      # Strip duplicate rpaths and rpaths rooted in the build directory.
      # We do this separately from the rpath relocation above to avoid
      # failing to relocate an rpath whose variable duplicate we deleted.
      each_linkage_for(file, :rpaths, resolve_variable_references: true) do |bad_name|
        next if !rooted_in_build_directory?(bad_name) && file.rpaths.count(bad_name) == 1

        modified = delete_rpath(bad_name, file)
        needs_codesigning ||= modified
      end

      # codesign the file if needed
      codesign_patched_binary(file) if needs_codesigning
    end
  end

  generic_fix_dynamic_linkage
end

#fixed_name(file, bad_name) ⇒ Object

If file is a dylib or bundle itself, look for the dylib named by bad_name relative to the lib directory, so that we can skip the more expensive recursive search if possible.



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# File 'extend/os/mac/keg_relocate.rb', line 114

def fixed_name(file, bad_name)
  if bad_name.start_with? PREFIX_PLACEHOLDER
    bad_name.sub(PREFIX_PLACEHOLDER, HOMEBREW_PREFIX)
  elsif bad_name.start_with? CELLAR_PLACEHOLDER
    bad_name.sub(CELLAR_PLACEHOLDER, HOMEBREW_CELLAR)
  elsif (file.dylib? || file.mach_o_bundle?) && (file.dirname/bad_name).exist?
    "@loader_path/#{bad_name}"
  elsif file.mach_o_executable? && (lib/bad_name).exist?
    "#{lib}/#{bad_name}"
  elsif file.mach_o_executable? && (libexec/"lib"/bad_name).exist?
    "#{libexec}/lib/#{bad_name}"
  elsif (abs_name = find_dylib(bad_name)) && abs_name.exist?
    abs_name.to_s
  else
    opoo "Could not fix #{bad_name} in #{file}"
    bad_name
  end
end

#functions_installed?(shell) ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 346

def functions_installed?(shell)
  case shell
  when :fish
    dir = path/"share/fish/vendor_functions.d"
    dir.directory? && !dir.children.empty?
  when :zsh
    # Check for non completion functions (i.e. files not started with an underscore),
    # since those can be checked separately
    dir = path/"share/zsh/site-functions"
    dir.directory? && dir.children.any? { |f| !f.basename.to_s.start_with?("_") }
  end
end

#inspect ⇒ 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:



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# File 'keg.rb', line 181

def inspect
  "#<#{self.class.name}:#{path}>"
end

#lib ⇒ Object 



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# File 'keg_relocate.rb', line 252

def lib
  path/"lib"
end

#libexec ⇒ Object 



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# File 'keg_relocate.rb', line 256

def libexec
  path/"libexec"
end

#libtool_files ⇒ Object 



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# File 'keg_relocate.rb', line 305

def libtool_files
  libtool_files = []

  path.find do |pn|
    next if pn.symlink? || pn.directory? || Keg::LIBTOOL_EXTENSIONS.exclude?(pn.extname)

    libtool_files << pn
  end
  libtool_files
end

#link(verbose: false, dry_run: false, overwrite: false) ⇒ Object

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. 



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# File 'keg.rb', line 406

def link(verbose: false, dry_run: false, overwrite: false)
  raise AlreadyLinkedError, self if linked_keg_record.directory?

  ObserverPathnameExtension.reset_counts!

  optlink(verbose: verbose, dry_run: dry_run, overwrite: overwrite) unless dry_run

  # yeah indeed, you have to force anything you need in the main tree into
  # these dirs REMEMBER that *NOT* everything needs to be in the main tree
  link_dir("etc", verbose: verbose, dry_run: dry_run, overwrite: overwrite) { :mkpath }
  link_dir("bin", verbose: verbose, dry_run: dry_run, overwrite: overwrite) { :skip_dir }
  link_dir("sbin", verbose: verbose, dry_run: dry_run, overwrite: overwrite) { :skip_dir }
  link_dir("include", verbose: verbose, dry_run: dry_run, overwrite: overwrite) { :link }

  link_dir("share", verbose: verbose, dry_run: dry_run, overwrite: overwrite) do |relative_path|
    case relative_path.to_s
    when INFOFILE_RX then :info
    when "locale/locale.alias",
         %r{^icons/.*/icon-theme\.cache$}
      :skip_file
    when LOCALEDIR_RX,
         %r{^icons/}, # all icons subfolders should also mkpath
         /^zsh/,
         /^fish/,
         %r{^lua/}, #  Lua, Lua51, Lua53 all need the same handling.
         %r{^guile/},
         *SHARE_PATHS
      :mkpath
    else
      :link
    end
  end

  link_dir("lib", verbose: verbose, dry_run: dry_run, overwrite: overwrite) do |relative_path|
    case relative_path.to_s
    when "charset.alias"
      :skip_file
    when "pkgconfig", # pkg-config database gets explicitly created
         "cmake",     # cmake database gets explicitly created
         "dtrace",    # lib/language folders also get explicitly created
         /^gdk-pixbuf/,
         "ghc",
         /^gio/,
         /^lua/,
         /^mecab/,
         /^node/,
         /^ocaml/,
         /^perl5/,
         "php",
         /^python[23]\.\d+/,
         /^R/,
         /^ruby/
      :mkpath
    else
      # Everything else is symlinked to the cellar
      :link
    end
  end

  link_dir("Frameworks", verbose: verbose, dry_run: dry_run, overwrite: overwrite) do |relative_path|
    # Frameworks contain symlinks pointing into a subdir, so we have to use
    # the :link strategy. However, for Foo.framework and
    # Foo.framework/Versions we have to use :mkpath so that multiple formulae
    # can link their versions into it and `brew [un]link` works.
    if relative_path.to_s.match?(%r{[^/]*\.framework(/Versions)?$})
      :mkpath
    else
      :link
    end
  end
  unless dry_run
    make_relative_symlink(linked_keg_record, path, verbose: verbose, dry_run: dry_run, overwrite: overwrite)
  end
rescue LinkError
  unlink(verbose: verbose)
  raise
else
  ObserverPathnameExtension.n
end

#linked? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 209

def linked?
  linked_keg_record.symlink? &&
    linked_keg_record.directory? &&
    path == linked_keg_record.resolved_path
end

#loader_name_for(file, target) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 99

def loader_name_for(file, target)
  # Use @loader_path-relative install names for other Homebrew-installed binaries.
  if ENV["HOMEBREW_RELOCATABLE_INSTALL_NAMES"] && target.start_with?(HOMEBREW_PREFIX)
    dylib_suffix = find_dylib_suffix_from(target)
    target_dir = Pathname.new(target.delete_suffix(dylib_suffix)).cleanpath

    "@loader_path/#{target_dir.relative_path_from(file.dirname)/dylib_suffix}"
  else
    target
  end
end

#lock ⇒ Object

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. 



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# File 'keg.rb', line 323

def lock
  FormulaLock.new(name).with_lock do
    oldname_locks = oldname_opt_records.map do |record|
      FormulaLock.new(record.basename.to_s)
    end
    oldname_locks.each(&:lock)
    yield
  ensure
    oldname_locks&.each(&:unlock)
  end
end

#mach_o_files ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 179

def mach_o_files
  hardlinks = Set.new
  mach_o_files = []
  path.find do |pn|
    next if pn.symlink? || pn.directory?
    next if !pn.dylib? && !pn.mach_o_bundle? && !pn.mach_o_executable?
    # if we've already processed a file, ignore its hardlinks (which have the same dev ID and inode)
    # this prevents relocations from being performed on a binary more than once
    next unless hardlinks.add? [pn.stat.dev, pn.stat.ino]

    mach_o_files << pn
  end

  mach_o_files
end

#oldname_opt_records ⇒ Object

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. 



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# File 'keg.rb', line 394

def oldname_opt_records
  return @oldname_opt_records unless @oldname_opt_records.empty?

  @oldname_opt_records = if (opt_dir = HOMEBREW_PREFIX/"opt").directory?
    opt_dir.subdirs.select do |dir|
      dir.symlink? && dir != opt_record && path.parent == dir.resolved_path.parent
    end
  else
    []
  end
end

#openjdk_dep_name_if_applicable ⇒ Object 



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# File 'keg_relocate.rb', line 134

def openjdk_dep_name_if_applicable
  deps = runtime_dependencies
  return if deps.blank?

  dep_names = deps.map { |d| d["full_name"] }
  dep_names.find { |d| d.match? Version.formula_optionally_versioned_regex(:openjdk) }
end

#optlink(verbose: false, dry_run: false, overwrite: false) ⇒ Object

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. 



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# File 'keg.rb', line 513

def optlink(verbose: false, dry_run: false, overwrite: false)
  opt_record.delete if opt_record.symlink? || opt_record.exist?
  make_relative_symlink(opt_record, path, verbose: verbose, dry_run: dry_run, overwrite: overwrite)
  aliases.each do |a|
    alias_opt_record = opt_record.parent/a
    alias_opt_record.delete if alias_opt_record.symlink? || alias_opt_record.exist?
    make_relative_symlink(alias_opt_record, path, verbose: verbose, dry_run: dry_run, overwrite: overwrite)
  end

  oldname_opt_records.each do |record|
    record.delete
    make_relative_symlink(record, path, verbose: verbose, dry_run: dry_run, overwrite: overwrite)
  end
end

#optlinked? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 220

def optlinked?
  opt_record.symlink? && path == opt_record.resolved_path
end

#plist_installed? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 360

def plist_installed?
  !Dir["#{path}/*.plist"].empty?
end

#prepare_codesign_writable_files(file) ⇒ Object 



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# File 'extend/os/mac/keg.rb', line 72

def prepare_codesign_writable_files(file)
  result = system_command("codesign", args: [
    "--display", "--file-list", "-", file
  ], print_stderr: false)
  return unless result.success?

  files = result.stdout.lines.map { |f| Pathname(f.chomp) }
  saved_perms = {}
  files.each do |f|
    unless f.writable_real?
      saved_perms[f] = f.stat.mode
      FileUtils.chmod "u+rw", f.to_path
    end
  end
  yield
ensure
  saved_perms&.each do |f, p|
    f.chmod p if p
  end
end

#prepare_debug_symbols ⇒ Object

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. 



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# File 'extend/os/mac/keg.rb', line 95

def prepare_debug_symbols
  binary_executable_or_library_files.each do |file|
    odebug "Extracting symbols #{file}"

    result = system_command("dsymutil", args: [file], print_stderr: false)
    next if result.success?

    # If it fails again, error out
    ofail <<~EOS
      Failed to extract symbols from #{file}:
      #{result.stderr}
    EOS
  end
end

#prepare_relocation_to_locations ⇒ Object Also known as: generic_prepare_relocation_to_locations 



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# File 'extend/os/mac/keg_relocate.rb', line 195

def prepare_relocation_to_locations
  relocation = generic_prepare_relocation_to_locations

  brewed_perl = runtime_dependencies&.any? { |dep| dep["full_name"] == "perl" && dep["declared_directly"] }
  perl_path = if brewed_perl || name == "perl"
    "#{HOMEBREW_PREFIX}/opt/perl/bin/perl"
  elsif tab.built_on.present?
    perl_path = "/usr/bin/perl#{tab.built_on["preferred_perl"]}"

    # For `:all` bottles, we could have built this bottle with a Perl we don't have.
    # Such bottles typically don't have strict version requirements.
    perl_path = "/usr/bin/perl#{MacOS.preferred_perl_version}" unless File.exist?(perl_path)

    perl_path
  else
    "/usr/bin/perl#{MacOS.preferred_perl_version}"
  end
  relocation.add_replacement_pair(:perl, PERL_PLACEHOLDER, perl_path)

  if (openjdk = openjdk_dep_name_if_applicable)
    openjdk_path = HOMEBREW_PREFIX/"opt"/openjdk/"libexec/openjdk.jdk/Contents/Home"
    relocation.add_replacement_pair(:java, JAVA_PLACEHOLDER, openjdk_path.to_s)
  end

  relocation
end

#prepare_relocation_to_placeholders ⇒ Object Also known as: generic_prepare_relocation_to_placeholders 



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# File 'keg_relocate.rb', line 88

def prepare_relocation_to_placeholders
  relocation = Relocation.new
  relocation.add_replacement_pair(:prefix, HOMEBREW_PREFIX.to_s, PREFIX_PLACEHOLDER, path: true)
  relocation.add_replacement_pair(:cellar, HOMEBREW_CELLAR.to_s, CELLAR_PLACEHOLDER, path: true)
  # when HOMEBREW_PREFIX == HOMEBREW_REPOSITORY we should use HOMEBREW_PREFIX for all relocations to avoid
  # being unable to differentiate between them.
  if HOMEBREW_PREFIX != HOMEBREW_REPOSITORY
    relocation.add_replacement_pair(:repository, HOMEBREW_REPOSITORY.to_s, REPOSITORY_PLACEHOLDER, path: true)
  end
  relocation.add_replacement_pair(:library, HOMEBREW_LIBRARY.to_s, LIBRARY_PLACEHOLDER, path: true)
  relocation.add_replacement_pair(:perl,
                                  %r{\A#!(?:/usr/bin/perl\d\.\d+|#{HOMEBREW_PREFIX}/opt/perl/bin/perl)( |$)}o,
                                  "#!#{PERL_PLACEHOLDER}\\1")
  relocation.add_replacement_pair(:java, JAVA_REGEX, JAVA_PLACEHOLDER)

  relocation
end

#python_pth_files_installed? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 369

def python_pth_files_installed?
  !Dir["#{path}/lib/python2.7/site-packages/*.pth"].empty?
end

#python_site_packages_installed? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 364

def python_site_packages_installed?
  (path/"lib/python2.7/site-packages").directory?
end

#rack ⇒ Object

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. 



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# File 'keg.rb', line 174

def rack
  path.parent
end

#recursive_fgrep_args ⇒ Object Also known as: generic_recursive_fgrep_args 



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# File 'extend/os/mac/keg_relocate.rb', line 222

def recursive_fgrep_args
  # Don't recurse into symlinks; the man page says this is the default, but
  # it's wrong. -O is a BSD-grep-only option.
  "-lrO"
end

#relocate_build_prefix(keg, old_prefix, new_prefix) ⇒ Object 



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# File 'keg_relocate.rb', line 166

def relocate_build_prefix(keg, old_prefix, new_prefix)
  each_unique_file_matching(old_prefix) do |file|
    # Skip files which are not binary, as they do not need null padding.
    next unless keg.binary_file?(file)

    # Skip sharballs, which appear to break if patched.
    next if file.text_executable?

    # Split binary by null characters into array and substitute new prefix for old prefix.
    # Null padding is added if the new string is too short.
    file.ensure_writable do
      binary = File.binread file
      odebug "Replacing build prefix in: #{file}"
      binary_strings = binary.split(/#{NULL_BYTE}/o, -1)
      match_indices = binary_strings.each_index.select { |i| binary_strings.fetch(i).include?(old_prefix) }

      # Only perform substitution on strings which match prefix regex.
      match_indices.each do |i|
        s = binary_strings.fetch(i)
        binary_strings[i] = s.gsub(old_prefix, new_prefix)
                             .ljust(s.size, NULL_BYTE)
      end

      # Rejoin strings by null bytes.
      patched_binary = binary_strings.join(NULL_BYTE)
      if patched_binary.size != binary.size
        raise <<~EOS
          Patching failed!  Original and patched binary sizes do not match.
          Original size: #{binary.size}
          Patched size: #{patched_binary.size}
        EOS
      end

      file.atomic_write patched_binary
    end
    codesign_patched_binary(file)
  end
end

#relocate_dynamic_linkage(_relocation) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 21

def relocate_dynamic_linkage(relocation)
  mach_o_files.each do |file|
    file.ensure_writable do
      modified = T.let(false, T::Boolean)
      needs_codesigning = T.let(false, T::Boolean)

      if file.dylib?
        id = relocated_name_for(file.dylib_id, relocation)
        modified = change_dylib_id(id, file)
        needs_codesigning ||= modified
      end

      each_linkage_for(file, :dynamically_linked_libraries) do |old_name|
        new_name = relocated_name_for(old_name, relocation)
        modified = change_install_name(old_name, new_name, file) if new_name
        needs_codesigning ||= modified
      end

      each_linkage_for(file, :rpaths) do |old_name|
        new_name = relocated_name_for(old_name, relocation)
        modified = change_rpath(old_name, new_name, file) if new_name
        needs_codesigning ||= modified
      end

      # codesign the file if needed
      codesign_patched_binary(file) if needs_codesigning
    end
  end
end

#relocated_name_for(old_name, relocation) ⇒ Object 



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# File 'extend/os/mac/keg_relocate.rb', line 149

def relocated_name_for(old_name, relocation)
  old_prefix, new_prefix = relocation.replacement_pair_for(:prefix)
  old_cellar, new_cellar = relocation.replacement_pair_for(:cellar)

  if old_name.start_with? old_cellar
    old_name.sub(old_cellar, new_cellar)
  elsif old_name.start_with? old_prefix
    old_name.sub(old_prefix, new_prefix)
  end
end

#remove_linked_keg_record ⇒ Object

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. 



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# File 'keg.rb', line 215

def remove_linked_keg_record
  linked_keg_record.unlink
  linked_keg_record.parent.rmdir_if_possible
end

#remove_old_aliases ⇒ Object

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. 



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# File 'keg.rb', line 224

def remove_old_aliases
  opt = opt_record.parent
  linkedkegs = linked_keg_record.parent

  tap = begin
    to_formula.tap
  rescue
    # If the formula can't be found, just ignore aliases for now.
    nil
  end

  if tap
    bad_tap_opt = opt/tap.user
    FileUtils.rm_rf bad_tap_opt if !bad_tap_opt.symlink? && bad_tap_opt.directory?
  end

  aliases.each do |a|
    # versioned aliases are handled below
    next if a.match?(/.+@./)

    remove_alias_symlink(opt/a, opt_record)
    remove_alias_symlink(linkedkegs/a, linked_keg_record)
  end

  Pathname.glob("#{opt_record}@*").each do |a|
    a = a.basename.to_s
    next if aliases.include?(a)

    remove_alias_symlink(opt/a, rack)
    remove_alias_symlink(linkedkegs/a, rack)
  end
end

#remove_oldname_opt_records ⇒ Object

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. 



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# File 'keg.rb', line 490

def remove_oldname_opt_records
  oldname_opt_records.reject! do |record|
    return false if record.resolved_path != path

    record.unlink
    record.parent.rmdir_if_possible
    true
  end
end

#remove_opt_record ⇒ Object

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. 



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# File 'keg.rb', line 257

def remove_opt_record
  opt_record.unlink
  opt_record.parent.rmdir_if_possible
end

#replace_locations_with_placeholders ⇒ Object 



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# File 'keg_relocate.rb', line 107

def replace_locations_with_placeholders
  relocation = prepare_relocation_to_placeholders.freeze
  relocate_dynamic_linkage(relocation)
  replace_text_in_files(relocation)
end

#replace_placeholders_with_locations(files, skip_linkage: false) ⇒ Object 



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# File 'keg_relocate.rb', line 128

def replace_placeholders_with_locations(files, skip_linkage: false)
  relocation = prepare_relocation_to_locations.freeze
  relocate_dynamic_linkage(relocation) unless skip_linkage
  replace_text_in_files(relocation, files: files)
end

#replace_text_in_files(relocation, files: nil) ⇒ Object 



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# File 'keg_relocate.rb', line 142

def replace_text_in_files(relocation, files: nil)
  files ||= text_files | libtool_files

  changed_files = T.let([], Array)
  files.map(&path.method(:join)).group_by { |f| f.stat.ino }.each_value do |first, *rest|
    s = first.open("rb", &:read)

    next unless relocation.replace_text(s)

    changed_files += [first, *rest].map { |file| file.relative_path_from(path) }

    begin
      first.atomic_write(s)
    rescue SystemCallError
      first.ensure_writable do
        first.open("wb") { |f| f.write(s) }
      end
    else
      rest.each { |file| FileUtils.ln(first, file, force: true) }
    end
  end
  changed_files
end

#require_relocation? ⇒ 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.

Returns:

  • (Boolean) 


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# File 'keg.rb', line 205

def require_relocation?
  @require_relocation
end

#runtime_dependencies ⇒ Object

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. 



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# File 'keg.rb', line 504

def runtime_dependencies
  Keg.cache[:runtime_dependencies] ||= {}
  Keg.cache[:runtime_dependencies][path] ||= tab.runtime_dependencies
end

#symlink_files ⇒ Object 



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# File 'keg_relocate.rb', line 316

def symlink_files
  symlink_files = []
  path.find do |pn|
    symlink_files << pn if pn.symlink?
  end

  symlink_files
end

#tab ⇒ Object

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. 



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# File 'keg.rb', line 500

def tab
  Tab.for_keg(self)
end

#text_files ⇒ Object 



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# File 'keg_relocate.rb', line 260

def text_files
  text_files = []
  return text_files if !which("file") || !which("xargs")

  # file has known issues with reading files on other locales. Has
  # been fixed upstream for some time, but a sufficiently new enough
  # file with that fix is only available in macOS Sierra.
  # https://bugs.gw.com/view.php?id=292
  with_custom_locale("C") do
    files = Set.new path.find.reject { |pn|
      next true if pn.symlink?
      next true if pn.directory?
      next false if pn.basename.to_s == "orig-prefix.txt" # for python virtualenvs
      next true if pn == self/".brew/#{name}.rb"
      next true if Metafiles::EXTENSIONS.include?(pn.extname)

      if pn.text_executable?
        text_files << pn
        next true
      end
      false
    }
    output, _status = Open3.capture2("xargs -0 file --no-dereference --print0",
                                     stdin_data: files.to_a.join("\0"))
    # `file` output sometimes contains data from the file, which may include
    # invalid UTF-8 entities, so tell Ruby this is just a bytestring
    output.force_encoding(Encoding::ASCII_8BIT)
    output.each_line do |line|
      path, info = line.split("\0", 2)
      # `file` sometimes prints more than one line of output per file;
      # subsequent lines do not contain a null-byte separator, so `info`
      # will be `nil` for those lines
      next unless info
      next unless info.include?("text")

      path = Pathname.new(path)
      next unless files.include?(path)

      text_files << path
    end
  end

  text_files
end

#to_formula ⇒ Object

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. 



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# File 'keg.rb', line 390

def to_formula
  Formulary.from_keg(self)
end

#uninstall(raise_failures: false) ⇒ Object

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. 



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# File 'keg.rb', line 262

def uninstall(raise_failures: false)
  CacheStoreDatabase.use(:linkage) do |db|
    break unless db.created?

    LinkageCacheStore.new(path, db).delete!
  end

  path.rmtree
  path.parent.rmdir_if_possible
  remove_opt_record if optlinked?
  remove_linked_keg_record if linked?
  remove_old_aliases
  remove_oldname_opt_records
rescue Errno::EACCES, Errno::ENOTEMPTY
  raise if raise_failures

  odie <<~EOS
    Could not remove #{name} keg! Do so manually:
      sudo rm -rf #{path}
  EOS
end

#unlink(verbose: false, dry_run: false) ⇒ Object

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. 



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# File 'keg.rb', line 284

def unlink(verbose: false, dry_run: false)
  ObserverPathnameExtension.reset_counts!

  dirs = []

  keg_directories = KEG_LINK_DIRECTORIES.map { |d| path/d }
                                        .select(&:exist?)
  keg_directories.each do |dir|
    dir.find do |src|
      dst = HOMEBREW_PREFIX + src.relative_path_from(path)
      dst.extend(ObserverPathnameExtension)

      dirs << dst if dst.directory? && !dst.symlink?

      # check whether the file to be unlinked is from the current keg first
      next unless dst.symlink?
      next if src != dst.resolved_path

      if dry_run
        puts dst
        Find.prune if src.directory?
        next
      end

      dst.uninstall_info if dst.to_s.match?(INFOFILE_RX)
      dst.unlink
      Find.prune if src.directory?
    end
  end

  unless dry_run
    remove_old_aliases
    remove_linked_keg_record if linked?
    dirs.reverse_each(&:rmdir_if_possible)
  end

  ObserverPathnameExtension.n
end

#version ⇒ Object

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. 



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# File 'keg.rb', line 385

def version
  require "pkg_version"
  PkgVersion.parse(path.basename.to_s)
end