116 lines
3.0 KiB
Ruby
116 lines
3.0 KiB
Ruby
# typed: strict
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# frozen_string_literal: true
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require "fileutils"
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module Homebrew
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module Aliases
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class Alias
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sig { returns(String) }
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attr_accessor :name
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sig { returns(T.nilable(String)) }
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attr_accessor :command
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sig { params(name: String, command: T.nilable(String)).void }
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def initialize(name, command = nil)
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@name = T.let(name.strip, String)
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@command = T.let(nil, T.nilable(String))
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@script = T.let(nil, T.nilable(Pathname))
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@symlink = T.let(nil, T.nilable(Pathname))
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@command = if command&.start_with?("!", "%")
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command[1..]
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elsif command
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"brew #{command}"
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end
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end
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sig { returns(T::Boolean) }
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def reserved?
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RESERVED.include? name
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end
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sig { returns(T::Boolean) }
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def cmd_exists?
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path = which("brew-#{name}.rb") || which("brew-#{name}")
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!path.nil? && path.realpath.parent != HOMEBREW_ALIASES
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end
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sig { returns(Pathname) }
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def script
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@script ||= Pathname.new("#{HOMEBREW_ALIASES}/#{name.gsub(/\W/, "_")}")
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end
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sig { returns(Pathname) }
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def symlink
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@symlink ||= Pathname.new("#{HOMEBREW_PREFIX}/bin/brew-#{name}")
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end
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sig { returns(T::Boolean) }
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def valid_symlink?
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symlink.realpath.parent == HOMEBREW_ALIASES.realpath
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rescue NameError
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false
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end
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sig { void }
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def link
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FileUtils.rm symlink if File.symlink? symlink
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FileUtils.ln_s script, symlink
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end
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sig { params(opts: T::Hash[Symbol, T::Boolean]).void }
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def write(opts = {})
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odie "'#{name}' is a reserved command. Sorry." if reserved?
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odie "'brew #{name}' already exists. Sorry." if cmd_exists?
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return if !opts[:override] && script.exist?
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content = if command
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<<~EOS
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#: * `#{name}` [args...]
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#: `brew #{name}` is an alias for `#{command}`
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#{command} $*
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EOS
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else
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<<~EOS
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#
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# This is a Homebrew alias script. It'll be called when the user
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# types `brew #{name}`. Any remaining arguments are passed to
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# this script. You can retrieve those with $*, or only the first
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# one with $1. Please keep your script on one line.
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# TODO Replace the line below with your script
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echo "Hello I'm brew alias "#{name}" and my args are:" $1
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EOS
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end
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script.open("w") do |f|
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f.write <<~EOS
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#! #{`which bash`.chomp}
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# alias: brew #{name}
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#{content}
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EOS
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end
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script.chmod 0744
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link
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end
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sig { void }
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def remove
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odie "'brew #{name}' is not aliased to anything." if !symlink.exist? || !valid_symlink?
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script.unlink
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symlink.unlink
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end
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sig { void }
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def edit
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write(override: false)
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exec_editor script.to_s
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end
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end
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end
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end
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