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# Gets a patch from a GitHub commit or pull request and applies it to Homebrew.
# Optionally, installs it too.
require "utils"
require "formula"
require "cmd/tap"
module Homebrew
HOMEBREW_PULL_API_REGEX = %r{https://api\.github\.com/repos/([\w-]+)/homebrew(-[\w-]+)?/pulls/(\d+)}
def tap(arg)
match = arg.match(%r{homebrew-([\w-]+)/})
match[1].downcase if match
end
def pull_url(url)
# GitHub provides commits/pull-requests raw patches using this URL.
url += ".patch"
patchpath = HOMEBREW_CACHE + File.basename(url)
curl url, "-o", patchpath
ohai "Applying patch"
patch_args = []
# Normally we don't want whitespace errors, but squashing them can break
# patches so an option is provided to skip this step.
if ARGV.include?("--ignore-whitespace") || ARGV.include?("--clean")
patch_args << "--whitespace=nowarn"
else
patch_args << "--whitespace=fix"
end
# Fall back to three-way merge if patch does not apply cleanly
patch_args << "-3"
patch_args << patchpath
begin
safe_system "git", "am", *patch_args
rescue ErrorDuringExecution
if ARGV.include? "--resolve"
odie "Patch failed to apply: try to resolve it."
else
system "git", "am", "--abort"
odie "Patch failed to apply: aborted."
end
ensure
patchpath.unlink
end
end
def pull
if ARGV.empty?
odie "This command requires at least one argument containing a URL or pull request number"
end
if ARGV[0] == "--rebase"
odie "You meant `git pull --rebase`."
end
bintray_fetch_formulae =[]
ARGV.named.each do |arg|
if arg.to_i > 0
url = "https://github.com/Homebrew/homebrew/pull/#{arg}"
issue = arg
elsif (testing_match = arg.match %r{brew.sh/job/Homebrew%20Testing/(\d+)/})
_, testing_job = *testing_match
url = "https://github.com/Homebrew/homebrew/compare/master...BrewTestBot:testing-#{testing_job}"
odie "Testing URLs require `--bottle`!" unless ARGV.include?("--bottle")
else
if (api_match = arg.match HOMEBREW_PULL_API_REGEX)
_, user, tap, pull = *api_match
arg = "https://github.com/#{user}/homebrew#{tap}/pull/#{pull}"
end
url_match = arg.match HOMEBREW_PULL_OR_COMMIT_URL_REGEX
odie "Not a GitHub pull request or commit: #{arg}" unless url_match
url = url_match[0]
issue = url_match[3]
end
if !testing_job && ARGV.include?("--bottle") && issue.nil?
raise "No pull request detected!"
end
if !testing_job && tap_name = tap(url)
user = url_match[1].downcase
tap_dir = HOMEBREW_REPOSITORY/"Library/Taps/#{user}/homebrew-#{tap_name}"
safe_system "brew", "tap", "#{user}/#{tap_name}" unless tap_dir.exist?
Dir.chdir tap_dir
else
Dir.chdir HOMEBREW_REPOSITORY
end
# The cache directory seems like a good place to put patches.
HOMEBREW_CACHE.mkpath
# Store current revision and branch
revision = `git rev-parse --short HEAD`.strip
branch = `git symbolic-ref --short HEAD`.strip
unless branch == "master"
opoo "Current branch is #{branch}: do you need to pull inside master?" unless ARGV.include? "--clean"
end
pull_url url
changed_formulae = []
if tap_dir
formula_dir = %w[Formula HomebrewFormula].find { |d| tap_dir.join(d).directory? } || ""
else
formula_dir = "Library/Formula"
end
Utils.popen_read(
"git", "diff-tree", "-r", "--name-only",
"--diff-filter=AM", revision, "HEAD", "--", formula_dir
).each_line do |line|
name = File.basename(line.chomp, ".rb")
begin
changed_formulae << Formula[name]
# Make sure we catch syntax errors.
rescue Exception
next
end
end
unless ARGV.include? "--bottle"
changed_formulae.each do |f|
next unless f.bottle
opoo "#{f.full_name} has a bottle: do you need to update it with --bottle?"
end
end
if issue && !ARGV.include?("--clean")
ohai "Patch closes issue ##{issue}"
message = `git log HEAD^.. --format=%B`
if ARGV.include? "--bump"
odie "Can only bump one changed formula" unless changed_formulae.length == 1
formula = changed_formulae.first
subject = "#{formula.name} #{formula.version}"
ohai "New bump commit subject: #{subject}"
system "/bin/echo -n #{subject} | pbcopy"
message = "#{subject}\n\n#{message}"
end
# If this is a pull request, append a close message.
unless message.include? "Closes ##{issue}."
message += "\nCloses ##{issue}."
safe_system "git", "commit", "--amend", "--signoff", "--allow-empty", "-q", "-m", message
end
end
if ARGV.include? "--bottle"
bottle_commit_url = if testing_job
bottle_branch = "testing-bottle-#{testing_job}"
url
else
bottle_branch = "pull-bottle-#{issue}"
if tap_name
"https://github.com/BrewTestBot/homebrew-#{tap_name}/compare/homebrew:master...pr-#{issue}"
else
"https://github.com/BrewTestBot/homebrew/compare/homebrew:master...pr-#{issue}"
end
end
curl "--silent", "--fail", "-o", "/dev/null", "-I", bottle_commit_url
safe_system "git", "checkout", "-B", bottle_branch, revision
pull_url bottle_commit_url
safe_system "git", "rebase", branch
safe_system "git", "checkout", branch
safe_system "git", "merge", "--ff-only", "--no-edit", bottle_branch
safe_system "git", "branch", "-D", bottle_branch
# Publish bottles on Bintray
bintray_user = ENV["BINTRAY_USER"]
bintray_key = ENV["BINTRAY_KEY"]
if bintray_user && bintray_key
repo = Bintray.repository(tap_name)
changed_formulae.each do |f|
ohai "Publishing on Bintray:"
package = Bintray.package f.name
version = f.pkg_version
curl "-w", '\n', "--silent", "--fail",
"-u#{bintray_user}:#{bintray_key}", "-X", "POST",
"-d", '{"publish_wait_for_secs": -1}',
"https://api.bintray.com/content/homebrew/#{repo}/#{package}/#{version}/publish"
bintray_fetch_formulae << f
end
else
opoo "You must set BINTRAY_USER and BINTRAY_KEY to add or update bottles on Bintray!"
end
end
ohai "Patch changed:"
safe_system "git", "diff-tree", "-r", "--stat", revision, "HEAD"
if ARGV.include? "--install"
changed_formulae.each do |f|
ohai "Installing #{f.full_name}"
install = f.installed? ? "upgrade" : "install"
safe_system "brew", install, "--debug", f.full_name
end
end
end
bintray_fetch_formulae.each do |f|
max_retries = 5
retry_count = 0
begin
success = system "brew", "fetch", "--force-bottle", f.full_name
raise "Failed to download #{f} bottle!" unless success
rescue RuntimeError => e
retry_count += 1
raise e if retry_count >= max_retries
sleep_seconds = 2**retry_count
ohai "That didn't work; sleeping #{sleep_seconds} seconds and trying again..."
sleep sleep_seconds
retry
end
end
end
end
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