IssueID_xxxxなブランチ名の時に自動でコミットメッセージの先頭に[#IssueID]を付与するrubyスクリプト

commit-msg

#!/usr/bin/env ruby
message_file = ARGV[0]
message = File.read(message_file, :encoding => Encoding::UTF_8)

# remove prefix issue number like [#1234] from COMMIT_EDITMSG
message = message.sub(/^\[#[0-9A-Za-z_].*\]/, "")

# remove comment
message = message.gsub(/^#(?! ------------------------ >8 ------------------------).*\n|^\n/, "")

if message =~ /(?=\A)# ------------------------ >8 ------------------------\n/
  puts "An empty message aborts the commit."
  exit 1
end

# get number([#1234]) from branch(1234_foobar)
number = `git branch | grep "*"`[/\d+/].to_i

# add [#1234] to commit message
if 0 < number
  message = "[##{number}] #{message}"
end

File.write(message_file, message)