Module: Utils::Git Private

Defined in:
utils/git.rb

Overview

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.

Helper functions for querying Git information.

See Also:

Class Method Summary collapse

Class Method Details

.available? ⇒ 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 'utils/git.rb', line 10

def self.available?
  version.present?
end

.cherry_pick!(repo, *args, resolve: false, verbose: 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.

Special case of git cherry-pick that permits non-verbose output and optional resolution on merge conflict.



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# File 'utils/git.rb', line 134

def self.cherry_pick!(repo, *args, resolve: false, verbose: false)
  cmd = [git, "-C", repo, "cherry-pick"] + args
  output = Utils.popen_read(*cmd, err: :out)
  if $CHILD_STATUS.success?
    puts output if verbose
    output
  else
    system git, "-C", repo, "cherry-pick", "--abort" unless resolve
    raise ErrorDuringExecution.new(cmd, status: $CHILD_STATUS, output: [[:stdout, output]])
  end
end

.clear_available_cache ⇒ 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 'utils/git.rb', line 40

def self.clear_available_cache
  remove_instance_variable(:@version) if defined?(@version)
  remove_instance_variable(:@path) if defined?(@path)
  remove_instance_variable(:@git) if defined?(@git)
end

.ensure_installed! ⇒ 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 'utils/git.rb', line 93

def self.ensure_installed!
  return if available?

  # we cannot install brewed git if homebrew/core is unavailable.
  if CoreTap.instance.installed?
    begin
      # Otherwise `git` will be installed from source in tests that need it. This is slow
      # and will also likely fail due to `OS::Linux` and `OS::Mac` being undefined.
      raise "Refusing to install Git on a generic OS." if ENV["HOMEBREW_TEST_GENERIC_OS"]

      ensure_formula_installed!("git")
      clear_available_cache
    rescue
      raise "Git is unavailable"
    end
  end

  raise "Git is unavailable" unless available?
end

.file_at_commit(repo, file, commit) ⇒ 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 'utils/git.rb', line 87

def self.file_at_commit(repo, file, commit)
  relative_file = Pathname(file)
  relative_file = relative_file.relative_path_from(repo) if relative_file.absolute?
  Utils.popen_read(git, "-C", repo, "show", "#{commit}:#{relative_file}")
end

.git ⇒ 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 'utils/git.rb', line 28

def self.git
  return @git if defined?(@git)

  @git = HOMEBREW_SHIMS_PATH/"shared/git"
end

.last_revision_commit_of_file(repo, file, before_commit: nil) ⇒ 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 'utils/git.rb', line 46

def self.last_revision_commit_of_file(repo, file, before_commit: nil)
  args = if before_commit.nil?
    ["--skip=1"]
  else
    [before_commit.split("..").first]
  end

  Utils.popen_read(git, "-C", repo, "log", "--format=%h", "--abbrev=7", "--max-count=1", *args, "--", file).chomp
end

.last_revision_commit_of_files(repo, files, before_commit: nil) ⇒ 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 'utils/git.rb', line 56

def self.last_revision_commit_of_files(repo, files, before_commit: nil)
  args = if before_commit.nil?
    ["--skip=1"]
  else
    [before_commit.split("..").first]
  end

  # git log output format:
  #   <commit_hash>
  #   <file_path1>
  #   <file_path2>
  #   ...
  # return [<commit_hash>, [file_path1, file_path2, ...]]
  rev, *paths = Utils.popen_read(
    git, "-C", repo, "log",
    "--pretty=format:%h", "--abbrev=7", "--max-count=1",
    "--diff-filter=d", "--name-only", *args, "--", *files
  ).lines.map(&:chomp).reject(&:empty?)
  [rev, paths]
end

.last_revision_of_file(repo, file, before_commit: nil) ⇒ 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:



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# File 'utils/git.rb', line 81

def self.last_revision_of_file(repo, file, before_commit: nil)
  relative_file = Pathname(file).relative_path_from(repo)
  commit_hash = last_revision_commit_of_file(repo, relative_file, before_commit: before_commit)
  file_at_commit(repo, file, commit_hash)
end

.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. 



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# File 'utils/git.rb', line 21

def self.path
  return unless available?
  return @path if defined?(@path)

  @path = Utils.popen_read(git, "--homebrew=print-path").chomp.presence
end

.remote_exists?(url) ⇒ 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 'utils/git.rb', line 34

def self.remote_exists?(url)
  return true unless available?

  quiet_system "git", "ls-remote", url
end

.set_name_email!(author: true, committer: true) ⇒ 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 'utils/git.rb', line 113

def self.set_name_email!(author: true, committer: true)
  if Homebrew::EnvConfig.git_name
    ENV["GIT_AUTHOR_NAME"] = Homebrew::EnvConfig.git_name if author
    ENV["GIT_COMMITTER_NAME"] = Homebrew::EnvConfig.git_name if committer
  end

  return unless Homebrew::EnvConfig.git_email

  ENV["GIT_AUTHOR_EMAIL"] = Homebrew::EnvConfig.git_email if author
  ENV["GIT_COMMITTER_EMAIL"] = Homebrew::EnvConfig.git_email if committer
end

.setup_gpg! ⇒ 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 'utils/git.rb', line 125

def self.setup_gpg!
  gnupg_bin = HOMEBREW_PREFIX/"opt/gnupg/bin"
  return unless gnupg_bin.directory?

  ENV["PATH"] = PATH.new(ENV.fetch("PATH")).prepend(gnupg_bin).to_s
end

.supports_partial_clone_sparse_checkout? ⇒ 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 'utils/git.rb', line 146

def self.supports_partial_clone_sparse_checkout?
  # There is some support for partial clones prior to 2.20, but we avoid using it
  # due to performance issues
  Version.new(version) >= Version.new("2.20.0")
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 'utils/git.rb', line 14

def self.version
  return @version if defined?(@version)

  stdout, _, status = system_command(git, args: ["--version"], verbose: false, print_stderr: false)
  @version = status.success? ? stdout.chomp[/git version (\d+(?:\.\d+)*)/, 1] : nil
end