Module: Utils Private

Defined in:
extend/os/mac/utils/bottles.rb,
utils.rb,
utils/ast.rb,
utils/git.rb,
utils/svn.rb,
utils/tar.rb,
utils/uid.rb,
utils/curl.rb,
utils/fork.rb,
utils/gzip.rb,
utils/link.rb,
utils/path.rb,
utils/popen.rb,
utils/shell.rb,
utils/timer.rb,
utils/socket.rb,
utils/bottles.rb,
utils/linkage.rb,
utils/service.rb,
utils/shebang.rb,
utils/analytics.rb,
utils/backtrace.rb,
utils/inreplace.rb,
utils/autoremove.rb,
utils/git_repository.rb,
utils/topological_hash.rb,
utils/ast.rbi

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

Defined Under Namespace

Modules: AST, Analytics, Backtrace, Bottles, Curl, Git, Gzip, Inreplace, Link, Path, Service, Shebang, Shell, Svn, Tar, Timer, UID, UNIXSocketExt Classes: TopologicalHash, UNIXServerExt

Class Method Summary collapse

Class Method Details

.binary_linked_to_library?(binary, library) ⇒ 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) 


8
9
10
11
12
13
14
 
# File 'utils/linkage.rb', line 8

def self.binary_linked_to_library?(binary, library)
  Pathname.new(binary).dynamically_linked_libraries.any? do |dll|
    next false unless dll.start_with?(HOMEBREW_PREFIX.to_s)

    File.realpath(dll) == File.realpath(Pathname.new(library))
  end
end

.deconstantize(path) ⇒ 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.

Removes the rightmost segment from the constant expression in the string.

deconstantize('Net::HTTP') # => "Net" deconstantize('::Net::HTTP') # => "::Net" deconstantize('String') # => "" deconstantize('::String') # => "" deconstantize('') # => ""

See also #demodulize.

Parameters:

Returns:

See Also:



86
87
88
 
# File 'utils.rb', line 86

def self.deconstantize(path)
  T.must(path[0, path.rindex("::") || 0]) # implementation based on the one in facets' Module#spacename
end

.demodulize(path) ⇒ 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.

Removes the module part from the expression in the string.

demodulize('ActiveSupport::Inflector::Inflections') # => "Inflections" demodulize('Inflections') # => "Inflections" demodulize('::Inflections') # => "Inflections" demodulize('') # => ""

See also #deconstantize.

Parameters:

Returns:

Raises:

  • (ArgumentError) —

    if the provided path is nil

See Also:



102
103
104
105
106
107
108
109
110
 
# File 'utils.rb', line 102

def self.demodulize(path)
  raise ArgumentError, "No constant path provided" if path.nil?

  if (i = path.rindex("::"))
    T.must(path[(i + 2)..])
  else
    path
  end
end

.git_branch(repo = Pathname.pwd, safe: true) ⇒ 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.

Gets the name of the currently checked-out branch, or HEAD if the repository is in a detached HEAD state.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • safe (Boolean) (defaults to: true)

Returns:



38
39
40
 
# File 'utils/git_repository.rb', line 38

def self.git_branch(repo = Pathname.pwd, safe: true)
  GitRepository.new(Pathname(repo)).branch_name(safe:)
end

.git_commit_message(repo = Pathname.pwd, commit: "HEAD", safe: true) ⇒ 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.

Gets the full commit message of the specified commit, or of the HEAD commit if unspecified.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • commit (String) (defaults to: "HEAD")
  • safe (Boolean) (defaults to: true)

Returns:



50
51
52
 
# File 'utils/git_repository.rb', line 50

def self.git_commit_message(repo = Pathname.pwd, commit: "HEAD", safe: true)
  GitRepository.new(Pathname(repo)).commit_message(commit, safe:)
end

.git_head(repo = Pathname.pwd, length: nil, safe: true) ⇒ 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.

Gets the full commit hash of the HEAD commit.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • length (Integer, nil) (defaults to: nil)
  • safe (Boolean) (defaults to: true)

Returns:



13
14
15
16
17
 
# File 'utils/git_repository.rb', line 13

def self.git_head(repo = Pathname.pwd, length: nil, safe: true)
  return git_short_head(repo, length:) if length

  GitRepository.new(Pathname(repo)).head_ref(safe:)
end

.git_short_head(repo = Pathname.pwd, length: nil, safe: true) ⇒ 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.

Gets a short commit hash of the HEAD commit.

Parameters:

  • repo (String, Pathname) (defaults to: Pathname.pwd)
  • length (Integer, nil) (defaults to: nil)
  • safe (Boolean) (defaults to: true)

Returns:



27
28
29
 
# File 'utils/git_repository.rb', line 27

def self.git_short_head(repo = Pathname.pwd, length: nil, safe: true)
  GitRepository.new(Pathname(repo)).short_head_ref(length:, safe:)
end

.parse_author!(author) ⇒ Hash

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:

Raises:



125
126
127
128
129
130
131
132
133
134
 
# File 'utils.rb', line 125

def self.parse_author!(author)
  match_data = /^(?<name>[^<]+?)[ \t]*<(?<email>[^>]+?)>$/.match(author)
  if match_data
    name = match_data[:name]
    email = match_data[:email]
  end
  raise UsageError, "Unable to parse name and email." if name.blank? && email.blank?

  { name: T.must(name), email: T.must(email) }
end

.pluralize(stem, count, plural: "s", singular: "", include_count: false) ⇒ 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.

A lightweight alternative to ActiveSupport::Inflector.pluralize: Combines stem with the singular or plural suffix based on count. Adds a prefix of the count value if include_count is set to true.

Parameters:

  • stem (String)
  • count (Integer)
  • plural (String) (defaults to: "s")
  • singular (String) (defaults to: "")
  • include_count (Boolean) (defaults to: false)

Returns:



118
119
120
121
122
 
# File 'utils.rb', line 118

def self.pluralize(stem, count, plural: "s", singular: "", include_count: false)
  prefix = include_count ? "#{count} " : ""
  suffix = (count == 1) ? singular : plural
  "#{prefix}#{stem}#{suffix}"
end

.popen(args, mode, options = {}) ⇒ 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. 



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'utils/popen.rb', line 46

def self.popen(args, mode, options = {})
  IO.popen("-", mode) do |pipe|
    if pipe
      return pipe.read unless block_given?

      yield pipe
    else
      options[:err] ||= File::NULL unless ENV["HOMEBREW_STDERR"]
      cmd = if args[0].is_a? Hash
        args[1]
      else
        args[0]
      end
      begin
        exec(*args, options)
      rescue Errno::ENOENT
        $stderr.puts "brew: command not found: #{cmd}" if options[:err] != :close
        exit! 127
      rescue SystemCallError
        $stderr.puts "brew: exec failed: #{cmd}" if options[:err] != :close
        exit! 1
      end
    end
  end
end

.popen_read(*args, safe: false, **options, &block) ⇒ 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.

Raises:



8
9
10
11
12
13
 
# File 'utils/popen.rb', line 8

def self.popen_read(*args, safe: false, **options, &block)
  output = popen(args, "rb", options, &block)
  return output if !safe || $CHILD_STATUS.success?

  raise ErrorDuringExecution.new(args, status: $CHILD_STATUS, output: [[:stdout, output]])
end

.popen_write(*args, safe: false, **options) ⇒ 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.

Raises:



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'utils/popen.rb', line 19

def self.popen_write(*args, safe: false, **options)
  output = ""
  popen(args, "w+b", options) do |pipe|
    # Before we yield to the block, capture as much output as we can
    loop do
      output += pipe.read_nonblock(IO_DEFAULT_BUFFER_SIZE)
    rescue IO::WaitReadable, EOFError
      break
    end

    yield pipe
    pipe.close_write
    pipe.wait_readable

    # Capture the rest of the output
    output += pipe.read
    output.freeze
  end
  return output if !safe || $CHILD_STATUS.success?

  raise ErrorDuringExecution.new(args, status: $CHILD_STATUS, output: [[:stdout, output]])
end

.rewrite_child_error(child_error) ⇒ Exception

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:

  • (Exception) 


9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'utils/fork.rb', line 9

def self.rewrite_child_error(child_error)
  inner_class = Object.const_get(child_error["json_class"])
  error = if child_error["cmd"] && inner_class == ErrorDuringExecution
    ErrorDuringExecution.new(child_error["cmd"],
                             status: child_error["status"],
                             output: child_error["output"])
  elsif child_error["cmd"] && inner_class == BuildError
    # We fill `BuildError#formula` and `BuildError#options` in later,
    # when we rescue this in `FormulaInstaller#build`.
    BuildError.new(nil, child_error["cmd"], child_error["args"], child_error["env"])
  elsif inner_class == Interrupt
    Interrupt.new
  else
    # Everything other error in the child just becomes a RuntimeError.
    RuntimeError.new <<~EOS
      An exception occurred within a child process:
        #{inner_class}: #{child_error["m"]}
    EOS
  end

  error.set_backtrace child_error["b"]

  error
end

.safe_filename(basename) ⇒ 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.

Parameters:

Returns:



167
168
169
 
# File 'utils.rb', line 167

def self.safe_filename(basename)
  basename.gsub(SAFE_FILENAME_REGEX, "")
end

.safe_filename?(basename) ⇒ 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) 


162
163
164
 
# File 'utils.rb', line 162

def self.safe_filename?(basename)
  !SAFE_FILENAME_REGEX.match?(basename)
end

.safe_fork(directory: nil, yield_parent: false, &_blk) ⇒ 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.

When using this function, remember to call exec as soon as reasonably possible. This function does not protect against the pitfalls of what you can do pre-exec in a fork. See man fork for more information.

Parameters:

  • directory (String, nil) (defaults to: nil)
  • yield_parent (Boolean) (defaults to: false)
  • _blk (T.proc.params(arg0: T.nilable(String)).void) 


41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
 
# File 'utils/fork.rb', line 41

def self.safe_fork(directory: nil, yield_parent: false, &_blk)
  require "json/add/exception"

  block = proc do |tmpdir|
    UNIXServerExt.open("#{tmpdir}/socket") do |server|
      read, write = IO.pipe

      pid = fork do
        # bootsnap doesn't like these forked processes
        ENV["HOMEBREW_NO_BOOTSNAP"] = "1"
        error_pipe = server.path
        ENV["HOMEBREW_ERROR_PIPE"] = error_pipe
        server.close
        read.close
        write.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)

        Process::UID.change_privilege(Process.euid) if Process.euid != Process.uid

        yield(error_pipe)
      # This could be any type of exception, so rescue them all.
      rescue Exception => e # rubocop:disable Lint/RescueException
        error_hash = JSON.parse e.to_json

        # Special case: We need to recreate ErrorDuringExecutions
        # for proper error messages and because other code expects
        # to rescue them further down.
        if e.is_a?(ErrorDuringExecution)
          error_hash["cmd"] = e.cmd
          error_hash["status"] = if e.status.is_a?(Process::Status)
            {
              exitstatus: e.status.exitstatus,
              termsig:    e.status.termsig,
            }
          else
            e.status
          end
          error_hash["output"] = e.output
        end

        write.puts error_hash.to_json
        write.close

        exit!
      else
        exit!(true)
      end

      begin
        yield(nil) if yield_parent

        begin
          socket = server.accept_nonblock
        rescue Errno::EAGAIN, Errno::EWOULDBLOCK, Errno::ECONNABORTED, Errno::EPROTO, Errno::EINTR
          retry unless Process.waitpid(pid, Process::WNOHANG)
        else
          socket.send_io(write)
          socket.close
        end
        write.close
        data = read.read
        read.close
        Process.waitpid(pid) unless socket.nil?
      rescue Interrupt
        Process.waitpid(pid)
      end

      # 130 is the exit status for a process interrupted via Ctrl-C.
      raise Interrupt if $CHILD_STATUS.exitstatus == 130
      raise Interrupt if $CHILD_STATUS.termsig == Signal.list["INT"]

      if data.present?
        error_hash = JSON.parse(T.must(data.lines.first))
        raise rewrite_child_error(error_hash)
      end

      raise ChildProcessError, $CHILD_STATUS unless $CHILD_STATUS.success?
    end
  end

  if directory
    block.call(directory)
  else
    Dir.mktmpdir("homebrew-fork", HOMEBREW_TEMP, &block)
  end
end

.safe_popen_read(*args, **options, &block) ⇒ 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. 



15
16
17
 
# File 'utils/popen.rb', line 15

def self.safe_popen_read(*args, **options, &block)
  popen_read(*args, safe: true, **options, &block)
end

.safe_popen_write(*args, **options, &block) ⇒ 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. 



42
43
44
 
# File 'utils/popen.rb', line 42

def self.safe_popen_write(*args, **options, &block)
  popen_write(*args, safe: true, **options, &block)
end

.underscore(camel_cased_word) ⇒ 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.

Makes an underscored, lowercase form from the expression in the string.

Changes '::' to '/' to convert namespaces to paths.

underscore('ActiveModel') # => "active_model" underscore('ActiveModel::Errors') # => "active_model/errors"

Parameters:

Returns:

See Also:



146
147
148
149
150
151
152
153
154
155
156
 
# File 'utils.rb', line 146

def self.underscore(camel_cased_word)
  return camel_cased_word.to_s unless /[A-Z-]|::/.match?(camel_cased_word)

  word = camel_cased_word.to_s.gsub("::", "/")
  word.gsub!(/([A-Z])(?=[A-Z][a-z])|([a-z\d])(?=[A-Z])/) do
    T.must(::Regexp.last_match(1) || ::Regexp.last_match(2)) << "_"
  end
  word.tr!("-", "_")
  word.downcase!
  word
end