Class: Homebrew::Aliases::Alias Private

Inherits:
Object
  • Object
show all
Defined in:
aliases/alias.rb

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.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, command = nil) ⇒ 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.

Parameters:



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# File 'aliases/alias.rb', line 16

def initialize(name, command = nil)
  @name = T.let(name.strip, String)
  @command = T.let(nil, T.nilable(String))
  @script = T.let(nil, T.nilable(Pathname))
  @symlink = T.let(nil, T.nilable(Pathname))

  @command = if command&.start_with?("!", "%")
    command[1..]
  elsif command
    "brew #{command}"
  end
end

Instance Attribute Details

#command ⇒ 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 'aliases/alias.rb', line 13

def command
  @command
end

#name ⇒ 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 'aliases/alias.rb', line 10

def name
  @name
end

Instance Method Details

#cmd_exists? ⇒ 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 'aliases/alias.rb', line 35

def cmd_exists?
  path = which("brew-#{name}.rb") || which("brew-#{name}")
  !path.nil? && path.realpath.parent != HOMEBREW_ALIASES
end

#edit ⇒ 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.



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# File 'aliases/alias.rb', line 109

def edit
  write(override: false)
  exec_editor script.to_s
end

#link ⇒ 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.



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# File 'aliases/alias.rb', line 58

def link
  FileUtils.rm symlink if File.symlink? symlink
  FileUtils.ln_s script, symlink
end

#remove ⇒ 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.



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# File 'aliases/alias.rb', line 101

def remove
  odie "'brew #{name}' is not aliased to anything." if !symlink.exist? || !valid_symlink?

  script.unlink
  symlink.unlink
end

#reserved? ⇒ 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 'aliases/alias.rb', line 30

def reserved?
  RESERVED.include? name
end

#script ⇒ 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 'aliases/alias.rb', line 41

def script
  @script ||= Pathname.new("#{HOMEBREW_ALIASES}/#{name.gsub(/\W/, "_")}")
end

#symlink ⇒ 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 'aliases/alias.rb', line 46

def symlink
  @symlink ||= Pathname.new("#{HOMEBREW_PREFIX}/bin/brew-#{name}")
end

#valid_symlink? ⇒ 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 'aliases/alias.rb', line 51

def valid_symlink?
  symlink.realpath.parent == HOMEBREW_ALIASES.realpath
rescue NameError
  false
end

#write(opts = {}) ⇒ 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:

  • opts (Hash{Symbol => Boolean}) (defaults to: {}) 


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# File 'aliases/alias.rb', line 64

def write(opts = {})
  odie "'#{name}' is a reserved command. Sorry." if reserved?
  odie "'brew #{name}' already exists. Sorry." if cmd_exists?

  return if !opts[:override] && script.exist?

  content = if command
    <<~EOS
      #:  * `#{name}` [args...]
      #:    `brew #{name}` is an alias for `#{command}`
      #{command} $*
    EOS
  else
    <<~EOS
      #
      # This is a Homebrew alias script. It'll be called when the user
      # types `brew #{name}`. Any remaining arguments are passed to
      # this script. You can retrieve those with $*, or only the first
      # one with $1. Please keep your script on one line.

      # TODO Replace the line below with your script
      echo "Hello I'm brew alias "#{name}" and my args are:" $1
    EOS
  end

  script.open("w") do |f|
    f.write <<~EOS
      #! #{`which bash`.chomp}
      # alias: brew #{name}
      #{content}
    EOS
  end
  script.chmod 0744
  link
end