/
link.rb
114 lines (96 loc) 路 3 KB
/
link.rb
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# frozen_string_literal: true
require "ostruct"
require "caveats"
require "cli/parser"
module Homebrew
module_function
def link_args
Homebrew::CLI::Parser.new do
usage_banner <<~EOS
`ln`, `link` [<options>] <formula>
Symlink all of <formula>'s installed files into the Homebrew prefix. This
is done automatically when you install formulae but can be useful for DIY
installations.
EOS
switch "--overwrite",
description: "Delete files already existing in the prefix while linking."
switch "-n", "--dry-run",
description: "List all files which would be linked or deleted by "\
"`brew link --overwrite`, but will not actually link or delete any files."
switch :force,
description: "Allow keg-only formulae to be linked."
switch :verbose
switch :debug
end
end
def link
link_args.parse
raise KegUnspecifiedError if ARGV.named.empty?
mode = OpenStruct.new
mode.overwrite = true if args.overwrite?
mode.dry_run = true if args.dry_run?
ARGV.kegs.each do |keg|
keg_only = Formulary.keg_only?(keg.rack)
if keg.linked?
opoo "Already linked: #{keg}"
name_and_flag = if keg_only
"--force #{keg.name}"
else
keg.name
end
puts "To relink: brew unlink #{keg.name} && brew link #{name_and_flag}"
next
end
if mode.dry_run
if mode.overwrite
puts "Would remove:"
else
puts "Would link:"
end
keg.link(mode)
puts_keg_only_path_message(keg) if keg_only
next
end
if keg_only
if Homebrew.default_prefix?
f = keg.to_formula
if f.keg_only_reason.reason == :provided_by_macos
caveats = Caveats.new(f)
opoo <<~EOS
Refusing to link macOS-provided software: #{keg.name}
#{caveats.keg_only_text(skip_reason: true).strip}
EOS
next
end
end
unless args.force?
opoo "#{keg.name} is keg-only and must be linked with --force"
puts_keg_only_path_message(keg)
next
end
end
keg.lock do
print "Linking #{keg}... "
puts if args.verbose?
begin
n = keg.link(mode)
rescue Keg::LinkError
puts
raise
else
puts "#{n} symlinks created"
end
puts_keg_only_path_message(keg) if keg_only && !ARGV.homebrew_developer?
end
end
end
def puts_keg_only_path_message(keg)
bin = keg/"bin"
sbin = keg/"sbin"
return if !bin.directory? && !sbin.directory?
opt = HOMEBREW_PREFIX/"opt/#{keg.name}"
puts "\nIf you need to have this software first in your PATH instead consider running:"
puts " #{Utils::Shell.prepend_path_in_profile(opt/"bin")}" if bin.directory?
puts " #{Utils::Shell.prepend_path_in_profile(opt/"sbin")}" if sbin.directory?
end
end