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#!ruby
require "time"
def usage!
STDERR.puts <<-EOS
Usage: #$0 [--trunk=<dir>] [--target=<dir>] <revision(s)>
Generate ChangeLog entries for backporting.
The entries are output to STDOUT, and the messages of this tool are output to
STDERR. So you can simply redirect STDOUT to get the entries.
You should specify the path of trunk by `--trunk`. If not, assumed cwd.
You also should specify the path of the target branch by `--target`. If not,
assumed cwd.
This means that you have to specify at least one of `--trunk` or `--target`.
revision(s) can be below or their combinations:
12345 # means r12345
12345,54321 # means r12345 and r54321
12345-12347 # means r12345, r12346 and r12347 (of course, if available)
Note that the revisions is backported branch's ones, not trunk's.
The target of this tool is *not* to generate ChangeLog automatically, but to
generate the draft of ChangeLog.
You have to check and modify the output.
EOS
exit
end
Majors = {
"eregon" => "Benoit Daloze <eregontp@gmail.com>",
"kazu" => "Kazuhiro NISHIYAMA <zn@mbf.nifty.com>",
"ko1" => "Koichi Sasada <ko1@atdot.net>",
"marcandre" => "Marc-Andre Lafortune <ruby-core@marc-andre.ca>",
"naruse" => "NARUSE, Yui <naruse@ruby-lang.org>",
"nobu" => "Nobuyoshi Nakada <nobu@ruby-lang.org>",
"normal" => "Eric Wong <normalperson@yhbt.net>",
"rhe" => "Kazuki Yamaguchi <k@rhe.jp>",
"shugo" => "Shugo Maeda <shugo@ruby-lang.org>",
"stomar" => "Marcus Stollsteimer <sto.mar@web.de>",
"usa" => "NAKAMURA Usaku <usa@ruby-lang.org>",
"zzak" => "Zachary Scott <e@zzak.io>",
}
trunk = "."
target = "."
ARGV.delete_if{|e| /^--trunk=(.*)/ =~ e && trunk = $1}
ARGV.delete_if{|e| /^--target=(.*)/ =~ e && target = $1}
usage! if ARGV.size == 0 || trunk == target
revisions = []
ARGV.each do |a|
a.split(/,/).each do |b|
if /-/ =~ b
revisions += Range.new(*b.split(/-/, 2).map{|e| Integer(e)}).to_a
else
revisions << Integer(b)
end
end
end
revisions.sort!
revisions.reverse!
revisions.each do |rev|
if /^Index: ChangeLog$/ =~ `svn diff -c #{rev} #{target}`
STDERR.puts "#{rev} already has ChangeLog. Skip."
else
lines = `svn log -r #{rev} #{target}`.lines[1..-2]
if lines.empty?
STDERR.puts "#{rev} does not exist. Skip."
next
end
unless /^merge revision\(s\) (\d+)/ =~ lines[2]
STDERR.puts "#{rev} is not seems to be a merge commit. Skip."
next
end
original = $1
committer = `svn log -r #{original} #{trunk}`.lines[1].split(/\|/)[1].strip
if Majors[committer]
committer = Majors[committer]
else
committer = "#{committer} <#{committer}@ruby-lang.org>"
end
time = Time.parse(lines.shift.split(/\|/)[2]).getlocal("+09:00")
puts "#{time.asctime} #{committer}"
puts
lines.shift(2) # skip "merge" line
lines.shift while lines.first == "\n"
lines.pop while lines.last == "\n"
lines.each do |line|
line.chomp!
line = "\t#{line}" if line[0] != "\t" && line != ""
puts line
end
puts
STDERR.puts "#{rev} is processed."
end
end
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