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ruby--ruby/tool/lib/vcs.rb
2021-01-26 10:30:29 +09:00

707 lines
20 KiB
Ruby

# vcs
require 'fileutils'
require 'optparse'
# This library is used by several other tools/ scripts to detect the current
# VCS in use (e.g. SVN, Git) or to interact with that VCS.
ENV.delete('PWD')
class VCS
DEBUG_OUT = STDERR.dup
end
unless File.respond_to? :realpath
require 'pathname'
def File.realpath(arg)
Pathname(arg).realpath.to_s
end
end
def IO.pread(*args)
VCS::DEBUG_OUT.puts(args.inspect) if $DEBUG
popen(*args) {|f|f.read}
end
module DebugPOpen
refine IO.singleton_class do
def popen(*args)
VCS::DEBUG_OUT.puts args.inspect if $DEBUG
super
end
end
end
using DebugPOpen
module DebugSystem
def system(*args)
VCS::DEBUG_OUT.puts args.inspect if $DEBUG
exception = false
opts = Hash.try_convert(args[-1])
if RUBY_VERSION >= "2.6"
unless opts
opts = {}
args << opts
end
exception = opts.fetch(:exception) {opts[:exception] = true}
elsif opts
exception = opts.delete(:exception) {true}
args.pop if opts.empty?
end
ret = super(*args)
raise "Command failed with status (#$?): #{args[0]}" if exception and !ret
ret
end
end
module Kernel
prepend(DebugSystem)
end
class VCS
prepend(DebugSystem) if defined?(DebugSystem)
class NotFoundError < RuntimeError; end
@@dirs = []
def self.register(dir, &pred)
@@dirs << [dir, self, pred]
end
def self.detect(path = '.', options = {}, parser = nil)
uplevel_limit = options.fetch(:uplevel_limit, 0)
curr = path
begin
@@dirs.each do |dir, klass, pred|
if pred ? pred[curr, dir] : File.directory?(File.join(curr, dir))
vcs = klass.new(curr)
vcs.define_options(parser) if parser
vcs.set_options(options)
return vcs
end
end
if uplevel_limit
break if uplevel_limit.zero?
uplevel_limit -= 1
end
prev, curr = curr, File.realpath(File.join(curr, '..'))
end until curr == prev # stop at the root directory
raise VCS::NotFoundError, "does not seem to be under a vcs: #{path}"
end
def self.local_path?(path)
String === path or path.respond_to?(:to_path)
end
def self.define_options(parser, opts = {})
parser.separator(" VCS common options:")
parser.define("--[no-]dryrun") {|v| opts[:dryrun] = v}
parser.define("--[no-]debug") {|v| opts[:debug] = v}
opts
end
attr_reader :srcdir
def initialize(path)
@srcdir = path
super()
end
def chdir(path)
@srcdir = path
end
def define_options(parser)
end
def set_options(opts)
@debug = opts.fetch(:debug) {$DEBUG}
@dryrun = opts.fetch(:dryrun) {@debug}
end
attr_reader :dryrun, :debug
alias dryrun? dryrun
alias debug? debug
NullDevice = defined?(IO::NULL) ? IO::NULL :
%w[/dev/null NUL NIL: NL:].find {|dev| File.exist?(dev)}
# returns
# * the last revision of the current branch
# * the last revision in which +path+ was modified
# * the last modified time of +path+
# * the last commit title since the latest upstream
def get_revisions(path)
if self.class.local_path?(path)
path = relative_to(path)
end
last, changed, modified, *rest = (
begin
if NullDevice
save_stderr = STDERR.dup
STDERR.reopen NullDevice, 'w'
end
_get_revisions(path, @srcdir)
rescue Errno::ENOENT => e
raise VCS::NotFoundError, e.message
ensure
if save_stderr
STDERR.reopen save_stderr
save_stderr.close
end
end
)
last or raise VCS::NotFoundError, "last revision not found"
changed or raise VCS::NotFoundError, "changed revision not found"
if modified
/\A(\d+)-(\d+)-(\d+)\D(\d+):(\d+):(\d+(?:\.\d+)?)\s*(?:Z|([-+]\d\d)(\d\d))\z/ =~ modified or
raise "unknown time format - #{modified}"
match = $~[1..6].map { |x| x.to_i }
off = $7 ? "#{$7}:#{$8}" : "+00:00"
match << off
begin
modified = Time.new(*match)
rescue ArgumentError
modified = Time.utc(*$~[1..6]) + $7.to_i * 3600 + $8.to_i * 60
end
end
return last, changed, modified, *rest
end
def modified(path)
_, _, modified, * = get_revisions(path)
modified
end
def relative_to(path)
if path
srcdir = File.realpath(@srcdir)
path = File.realdirpath(path)
list1 = srcdir.split(%r{/})
list2 = path.split(%r{/})
while !list1.empty? && !list2.empty? && list1.first == list2.first
list1.shift
list2.shift
end
if list1.empty? && list2.empty?
"."
else
([".."] * list1.length + list2).join("/")
end
else
'.'
end
end
def after_export(dir)
FileUtils.rm_rf(Dir.glob("#{dir}/.git*"))
end
def revision_handler(rev)
self.class
end
def revision_name(rev)
revision_handler(rev).revision_name(rev)
end
def short_revision(rev)
revision_handler(rev).short_revision(rev)
end
class SVN < self
register(".svn")
COMMAND = ENV['SVN'] || 'svn'
def self.revision_name(rev)
"r#{rev}"
end
def self.short_revision(rev)
rev
end
def _get_revisions(path, srcdir = nil)
if srcdir and self.class.local_path?(path)
path = File.join(srcdir, path)
end
if srcdir
info_xml = IO.pread(%W"#{COMMAND} info --xml #{srcdir}")
info_xml = nil unless info_xml[/<url>(.*)<\/url>/, 1] == path.to_s
end
info_xml ||= IO.pread(%W"#{COMMAND} info --xml #{path}")
_, last, _, changed, _ = info_xml.split(/revision="(\d+)"/)
modified = info_xml[/<date>([^<>]*)/, 1]
branch = info_xml[%r'<relative-url>\^/(?:branches/|tags/)?([^<>]+)', 1]
[Integer(last), Integer(changed), modified, branch]
end
def self.search_root(path)
return unless local_path?(path)
parent = File.realpath(path)
begin
parent = File.dirname(wkdir = parent)
return wkdir if File.directory?(wkdir + "/.svn")
end until parent == wkdir
end
def get_info
@info ||= IO.pread(%W"#{COMMAND} info --xml #{@srcdir}")
end
def url
@url ||= begin
url = get_info[/<root>(.*)<\/root>/, 1]
@url = URI.parse(url+"/") if url
end
end
def wcroot
@wcroot ||= begin
info = get_info
@wcroot = info[/<wcroot-abspath>(.*)<\/wcroot-abspath>/, 1]
@wcroot ||= self.class.search_root(@srcdir)
end
end
def branch(name)
return trunk if name == "trunk"
url + "branches/#{name}"
end
def tag(name)
url + "tags/#{name}"
end
def trunk
url + "trunk"
end
alias master trunk
def branch_list(pat)
IO.popen(%W"#{COMMAND} ls #{branch('')}") do |f|
f.each do |line|
line.chomp!
line.chomp!('/')
yield(line) if File.fnmatch?(pat, line)
end
end
end
def grep(pat, tag, *files, &block)
cmd = %W"#{COMMAND} cat"
files.map! {|n| File.join(tag, n)} if tag
set = block.binding.eval("proc {|match| $~ = match}")
IO.popen([cmd, *files]) do |f|
f.grep(pat) do |s|
set[$~]
yield s
end
end
end
def export(revision, url, dir, keep_temp = false)
if @srcdir and (rootdir = wcroot)
srcdir = File.realpath(@srcdir)
rootdir << "/"
if srcdir.start_with?(rootdir)
subdir = srcdir[rootdir.size..-1]
subdir = nil if subdir.empty?
FileUtils.mkdir_p(svndir = dir+"/.svn")
FileUtils.ln_s(Dir.glob(rootdir+"/.svn/*"), svndir)
system(COMMAND, "-q", "revert", "-R", subdir || ".", :chdir => dir) or return false
FileUtils.rm_rf(svndir) unless keep_temp
if subdir
tmpdir = Dir.mktmpdir("tmp-co.", "#{dir}/#{subdir}")
File.rename(tmpdir, tmpdir = "#{dir}/#{File.basename(tmpdir)}")
FileUtils.mv(Dir.glob("#{dir}/#{subdir}/{.[^.]*,..?*,*}"), tmpdir)
begin
Dir.rmdir("#{dir}/#{subdir}")
end until (subdir = File.dirname(subdir)) == '.'
FileUtils.mv(Dir.glob("#{tmpdir}/#{subdir}/{.[^.]*,..?*,*}"), dir)
Dir.rmdir(tmpdir)
end
return self
end
end
IO.popen(%W"#{COMMAND} export -r #{revision} #{url} #{dir}") do |pipe|
pipe.each {|line| /^A/ =~ line or yield line}
end
self if $?.success?
end
def after_export(dir)
super
FileUtils.rm_rf(dir+"/.svn")
end
def branch_beginning(url)
# `--limit` of svn-log is useless in this case, because it is
# applied before `--search`.
rev = IO.pread(%W[ #{COMMAND} log --xml
--search=matz --search-and=has\ started
-- #{url}/version.h])[/<logentry\s+revision="(\d+)"/m, 1]
rev.to_i if rev
end
def export_changelog(url, from, to, path)
range = [to || 'HEAD', (from ? from+1 : branch_beginning(url))].compact.join(':')
IO.popen({'TZ' => 'JST-9', 'LANG' => 'C', 'LC_ALL' => 'C'},
%W"#{COMMAND} log -r#{range} #{url}") do |r|
IO.copy_stream(r, path)
end
end
def commit
args = %W"#{COMMAND} commit"
if dryrun?
VCS::DEBUG_OUT.puts(args.inspect)
return true
end
system(*args)
end
end
class GIT < self
register(".git") {|path, dir| File.exist?(File.join(path, dir))}
COMMAND = ENV["GIT"] || 'git'
def cmd_args(cmds, srcdir = nil)
(opts = cmds.last).kind_of?(Hash) or cmds << (opts = {})
opts[:external_encoding] ||= "UTF-8"
if srcdir
opts[:chdir] ||= srcdir
end
VCS::DEBUG_OUT.puts cmds.inspect if debug?
cmds
end
def cmd_pipe_at(srcdir, cmds, &block)
without_gitconfig { IO.popen(*cmd_args(cmds, srcdir), &block) }
end
def cmd_read_at(srcdir, cmds)
result = without_gitconfig { IO.pread(*cmd_args(cmds, srcdir)) }
VCS::DEBUG_OUT.puts result.inspect if debug?
result
end
def cmd_pipe(*cmds, &block)
cmd_pipe_at(@srcdir, cmds, &block)
end
def cmd_read(*cmds)
cmd_read_at(@srcdir, cmds)
end
def svn_revision(log)
if /^ *git-svn-id: .*@(\d+) .*\n+\z/ =~ log
$1.to_i
end
end
def _get_revisions(path, srcdir = nil)
ref = Branch === path ? path.to_str : 'HEAD'
gitcmd = [COMMAND]
last = cmd_read_at(srcdir, [[*gitcmd, 'rev-parse', ref]]).rstrip
log = cmd_read_at(srcdir, [[*gitcmd, 'log', '-n1', '--date=iso', '--pretty=fuller', *path]])
changed = log[/\Acommit (\h+)/, 1]
modified = log[/^CommitDate:\s+(.*)/, 1]
if rev = svn_revision(log)
if changed == last
last = rev
else
svn_rev = svn_revision(cmd_read_at(srcdir, [[*gitcmd, 'log', '-n1', '--format=%B', last]]))
last = svn_rev if svn_rev
end
changed = rev
end
branch = cmd_read_at(srcdir, [gitcmd + %W[symbolic-ref --short #{ref}]])
if branch.empty?
branch = cmd_read_at(srcdir, [gitcmd + %W[describe --contains #{ref}]]).strip
end
if branch.empty?
branch_list = cmd_read_at(srcdir, [gitcmd + %W[branch --list --contains #{ref}]]).lines.to_a
branch, = branch_list.grep(/\A\*/)
case branch
when /\A\* *\(\S+ detached at (.*)\)\Z/
branch = $1
branch = nil if last.start_with?(branch)
when /\A\* (\S+)\Z/
branch = $1
else
branch = nil
end
unless branch
branch_list.each {|b| b.strip!}
branch_list.delete_if {|b| / / =~ b}
branch = branch_list.min_by(&:length) || ""
end
end
branch.chomp!
branch = ":detached:" if branch.empty?
upstream = cmd_read_at(srcdir, [gitcmd + %W[branch --list --format=%(upstream:short) #{branch}]])
upstream.chomp!
title = cmd_read_at(srcdir, [gitcmd + %W[log --format=%s -n1 #{upstream}..#{ref}]])
title = nil if title.empty?
[last, changed, modified, branch, title]
end
def self.revision_name(rev)
short_revision(rev)
end
def self.short_revision(rev)
rev[0, 10]
end
def revision_handler(rev)
case rev
when Integer
SVN
else
super
end
end
def without_gitconfig
home = ENV.delete('HOME')
yield
ensure
ENV['HOME'] = home if home
end
def initialize(*)
super
@srcdir = File.realpath(@srcdir)
VCS::DEBUG_OUT.puts @srcdir.inspect if debug?
self
end
Branch = Struct.new(:to_str)
def branch(name)
Branch.new(name)
end
alias tag branch
def master
branch("master")
end
alias trunk master
def stable
cmd = %W"#{COMMAND} for-each-ref --format=\%(refname:short) refs/heads/ruby_[0-9]*"
branch(cmd_read(cmd)[/.*^(ruby_\d+_\d+)$/m, 1])
end
def branch_list(pat)
cmd = %W"#{COMMAND} for-each-ref --format=\%(refname:short) refs/heads/#{pat}"
cmd_pipe(cmd) {|f|
f.each {|line|
line.chomp!
yield line
}
}
end
def grep(pat, tag, *files, &block)
cmd = %W[#{COMMAND} grep -h --perl-regexp #{tag} --]
set = block.binding.eval("proc {|match| $~ = match}")
cmd_pipe(cmd+files) do |f|
f.grep(pat) do |s|
set[$~]
yield s
end
end
end
def export(revision, url, dir, keep_temp = false)
system(COMMAND, "clone", "-c", "advice.detachedHead=false", "-s", (@srcdir || '.').to_s, "-b", url, dir) or return
(Integer === revision ? GITSVN : GIT).new(File.expand_path(dir))
end
def branch_beginning(url)
cmd_read(%W[ #{COMMAND} log -n1 --format=format:%H
--author=matz --committer=matz --grep=started\\.$
#{url.to_str} -- version.h include/ruby/version.h])
end
def export_changelog(url, from, to, path)
svn = nil
from, to = [from, to].map do |rev|
rev or next
if Integer === rev
svn = true
rev = cmd_read({'LANG' => 'C', 'LC_ALL' => 'C'},
%W"#{COMMAND} log -n1 --format=format:%H" <<
"--grep=^ *git-svn-id: .*@#{rev} ")
end
rev unless rev.empty?
end
unless (from && /./.match(from)) or ((from = branch_beginning(url)) && /./.match(from))
warn "no starting commit found", uplevel: 1
from = nil
end
if svn or system(*%W"#{COMMAND} fetch origin refs/notes/commits:refs/notes/commits",
chdir: @srcdir, exception: false)
system(*%W"#{COMMAND} fetch origin refs/notes/log-fix:refs/notes/log-fix",
chdir: @srcdir, exception: false)
else
warn "Could not fetch notes/commits tree", uplevel: 1
end
to ||= url.to_str
if from
arg = ["#{from}^..#{to}"]
else
arg = ["--since=25 Dec 00:00:00", to]
end
if svn
format_changelog_as_svn(path, arg)
else
format_changelog(path, arg)
end
end
def format_changelog(path, arg)
env = {'TZ' => 'JST-9', 'LANG' => 'C', 'LC_ALL' => 'C'}
cmd = %W"#{COMMAND} log --format=fuller --notes=commits --notes=log-fix --topo-order --no-merges"
date = "--date=iso-local"
unless system(env, *cmd, date, chdir: @srcdir, out: NullDevice, exception: false)
date = "--date=iso"
end
cmd << date
cmd.concat(arg)
File.open(path, 'w') do |w|
w.print "-*- coding: utf-8 -*-\n\n"
cmd_pipe(env, cmd, chdir: @srcdir) do |r|
while s = r.gets("\ncommit ")
h, s = s.split(/^$/, 2)
h.gsub!(/^(?:(?:Author|Commit)(?:Date)?|Date): /, ' \&')
if s.sub!(/\nNotes \(log-fix\):\n((?: +.*\n)+)/, '')
fix = $1
s = s.lines
fix.each_line do |x|
case x
when %r[^ +(\d+)s/(.+)/(.*)/]
begin
s[$1.to_i][$2] = $3
rescue IndexError
message = ["format_changelog failed to replace #{$2.dump} with #{$3.dump} at #$1\n"]
from = [1, $1.to_i-2].max
to = [s.size-1, $1.to_i+2].min
s.each_with_index do |e, i|
next if i < from
break if to < i
message << "#{i}:#{e}"
end
raise message.join('')
end
when %r[^( +)(\d+)i/(.*)/]
s[$2.to_i, 0] = "#{$1}#{$3}\n"
when %r[^ +(\d+)(?:,(\d+))?d]
n = $1.to_i
e = $2
s[n..(e ? e.to_i : n)] = []
end
end
s = s.join('')
end
s.gsub!(/ +\n/, "\n")
s.sub!(/^Notes:/, ' \&')
w.print h, s
end
end
end
end
def format_changelog_as_svn(path, arg)
cmd = %W"#{COMMAND} log --topo-order --no-notes -z --format=%an%n%at%n%B"
cmd.concat(arg)
File.open(path, 'w') do |w|
sep = "-"*72 + "\n"
w.print sep
cmd_pipe(cmd) do |r|
while s = r.gets("\0")
s.chomp!("\0")
author, time, s = s.split("\n", 3)
s.sub!(/\n\ngit-svn-id: .*@(\d+) .*\n\Z/, '')
rev = $1
time = Time.at(time.to_i).getlocal("+09:00").strftime("%F %T %z (%a, %d %b %Y)")
lines = s.count("\n") + 1
lines = "#{lines} line#{lines == 1 ? '' : 's'}"
w.print "r#{rev} | #{author} | #{time} | #{lines}\n\n", s, "\n", sep
end
end
end
end
def upstream
(branch = cmd_read(%W"#{COMMAND} symbolic-ref --short HEAD")).chomp!
(upstream = cmd_read(%W"#{COMMAND} branch --list --format=%(upstream) #{branch}")).chomp!
while ref = upstream[%r"\Arefs/heads/(.*)", 1]
upstream = cmd_read(%W"#{COMMAND} branch --list --format=%(upstream) #{ref}")
end
unless %r"\Arefs/remotes/([^/]+)/(.*)" =~ upstream
raise "Upstream not found"
end
[$1, $2]
end
def commit(opts = {})
args = [COMMAND, "push"]
args << "-n" if dryrun
remote, branch = upstream
args << remote
branches = %W[refs/notes/commits:refs/notes/commits HEAD:#{branch}]
if dryrun?
branches.each do |b|
VCS::DEBUG_OUT.puts((args + [b]).inspect)
end
return true
end
branches.each do |b|
system(*(args + [b])) or return false
end
true
end
end
class GITSVN < GIT
def self.revision_name(rev)
SVN.revision_name(rev)
end
def last_changed_revision
rev = cmd_read(%W"#{COMMAND} svn info"+[STDERR=>[:child, :out]])[/^Last Changed Rev: (\d+)/, 1]
com = cmd_read(%W"#{COMMAND} svn find-rev r#{rev}").chomp
return rev, com
end
def commit(opts = {})
rev, com = last_changed_revision
head = cmd_read(%W"#{COMMAND} symbolic-ref --short HEAD").chomp
commits = cmd_read([COMMAND, "log", "--reverse", "--format=%H %ae %ce", "#{com}..@"], "rb").split("\n")
commits.each_with_index do |l, i|
r, a, c = l.split(' ')
dcommit = [COMMAND, "svn", "dcommit"]
dcommit.insert(-2, "-n") if dryrun
dcommit << "--add-author-from" unless a == c
dcommit << r
system(*dcommit) or return false
system(COMMAND, "checkout", head) or return false
system(COMMAND, "rebase") or return false
end
if rev
old = [cmd_read(%W"#{COMMAND} log -1 --format=%H").chomp]
old << cmd_read(%W"#{COMMAND} svn reset -r#{rev}")[/^r#{rev} = (\h+)/, 1]
3.times do
sleep 2
system(*%W"#{COMMAND} pull --no-edit --rebase")
break unless old.include?(cmd_read(%W"#{COMMAND} log -1 --format=%H").chomp)
end
end
true
end
end
end