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require 'cmd/tap'
module Homebrew extend self
def update
abort "Please `brew install git' first." unless system "/usr/bin/which -s git"
# ensure GIT_CONFIG is unset as we need to operate on .git/config
ENV.delete('GIT_CONFIG')
cd HOMEBREW_REPOSITORY
git_init_if_necessary
report = Report.new
master_updater = Updater.new
master_updater.pull!
report.merge!(master_updater.report)
new_files = []
Dir["Library/Taps/*"].each do |tapd|
cd tapd do
updater = Updater.new
updater.pull!
report.merge!(updater.report) do |key, oldval, newval|
oldval.concat(newval)
end
end
end
Homebrew.link_tap_formula(report.new_tapped_formula)
if report.empty?
puts "Already up-to-date."
else
puts "Updated Homebrew from #{master_updater.initial_revision[0,8]} to #{master_updater.current_revision[0,8]}."
report.dump
end
end
private
def git_init_if_necessary
if Dir['.git/*'].empty?
safe_system "git init"
safe_system "git config core.autocrlf false"
safe_system "git remote add origin https://github.com/mxcl/homebrew.git"
safe_system "git fetch origin"
safe_system "git reset --hard origin/master"
end
rescue Exception
FileUtils.rm_rf ".git"
raise
end
end
class Updater
attr_reader :initial_revision, :current_revision
def pull!
safe_system "git checkout -q master"
@initial_revision = read_current_revision
# ensure we don't munge line endings on checkout
safe_system "git config core.autocrlf false"
args = ["pull"]
args << "--rebase" if ARGV.include? "--rebase"
args << "-q" unless ARGV.verbose?
args << "origin"
# the refspec ensures that 'origin/master' gets updated
args << "refs/heads/master:refs/remotes/origin/master"
safe_system "git", *args
@current_revision = read_current_revision
end
def report
map = Hash.new{ |h,k| h[k] = [] }
if initial_revision && initial_revision != current_revision
changes = `git diff-tree -r --name-status -z #{initial_revision} #{current_revision}`.split("\0")
changes.each_slice(2) do |status, file|
file = Pathname.pwd.join(file).relative_path_from(HOMEBREW_REPOSITORY)
map[status.to_sym] << file.to_s
end
end
map
end
private
def read_current_revision
`git rev-parse HEAD`.chomp
end
def `(cmd)
out = Kernel.`(cmd) #`
if $? && !$?.success?
$stderr.puts out
raise ErrorDuringExecution, "Failure while executing: #{cmd}"
end
ohai(cmd, out) if ARGV.verbose?
out
end
end
class Report < Hash
def dump
# Key Legend: Added (A), Copied (C), Deleted (D), Modified (M), Renamed (R)
dump_formula_report :A, "New Formula"
dump_formula_report :M, "Updated Formula"
dump_formula_report :D, "Deleted Formula"
dump_formula_report :R, "Renamed Formula"
# dump_new_commands
# dump_deleted_commands
end
def new_tapped_formula
fetch(:A, []).map do |path|
case path when %r{^Library/Taps(/\w+-\w+/.*)}
Pathname.new($1)
end
end.compact
end
def select_formula key
fetch(key, []).map do |path|
case path when %r{^Library/Formula}
File.basename(path, ".rb")
when %r{^Library/Taps/(\w+)-(\w+)/(.*)}
"#$1/#$2/#{File.basename(path, '.rb')}"
end
end.compact.sort
end
def dump_formula_report key, title
formula = select_formula(key)
unless formula.empty?
ohai title
puts_columns formula
end
end
end
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