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|
#!/usr/bin/env ruby
#
# Generate a changelog entry file in the correct location.
#
# Automatically stages the file and amends the previous commit if the `--amend`
# argument is used.
require 'optparse'
require 'yaml'
Options = Struct.new(
:amend,
:author,
:dry_run,
:merge_request,
:title
)
class ChangelogOptionParser
def self.parse(argv)
options = Options.new
parser = OptionParser.new do |opts|
opts.banner = "Usage: #{__FILE__} [options]"
# Note: We do not provide a shorthand for this in order to match the `git
# commit` interface
opts.on('--amend', 'Amend the previous commit') do |value|
options.amend = value
end
opts.on('-m', '--merge-request [integer]', Integer, 'Merge Request ID') do |value|
options.merge_request = value
end
opts.on('-n', '--dry-run', "Don't actually write anything, just print") do |value|
options.dry_run = value
end
opts.on('-u', '--git-username', 'Use Git user.name configuration as the author') do |value|
options.author = git_user_name if value
end
opts.on('-h', '--help', 'Print help message') do
puts opts
exit
end
end
parser.parse!(argv)
# Title is everything that remains, but let's clean it up a bit
options.title = argv.join(' ').strip.squeeze(' ').tr("\r\n", '')
options
end
def self.git_user_name
%x{git config user.name}.strip
end
end
class ChangelogEntry
attr_reader :options
def initialize(options)
@options = options
assert_feature_branch!
assert_new_file!
assert_title!
$stdout.puts "\e[32mcreate\e[0m #{file_path}"
$stdout.puts contents
unless options.dry_run
write
amend_commit if options.amend
end
end
def contents
YAML.dump(
'title' => title,
'merge_request' => options.merge_request,
'author' => options.author
)
end
def write
File.write(file_path, contents)
end
def amend_commit
%x{git add #{file_path}}
exec("git commit --amend")
end
private
def fail_with(message)
$stderr.puts "\e[31merror\e[0m #{message}"
exit 1
end
def assert_feature_branch!
return unless branch_name == 'master'
fail_with "Create a branch first!"
end
def assert_new_file!
return unless File.exist?(file_path)
fail_with "#{file_path} already exists!"
end
def assert_title!
return if options.title.length > 0 || options.amend
fail_with "Provide a title for the changelog entry or use `--amend`" \
" to use the title from the previous commit."
end
def title
if options.title.empty?
last_commit_subject
else
options.title
end
end
def last_commit_subject
%x{git log --format="%s" -1}.strip
end
def file_path
File.join(
unreleased_path,
branch_name.gsub(/[^\w-]/, '-') << '.yml'
)
end
def unreleased_path
File.join('changelogs', 'unreleased').tap do |path|
path << '-ee' if ee?
end
end
def ee?
@ee ||= File.exist?(File.expand_path('../CHANGELOG-EE.md', __dir__))
end
def branch_name
@branch_name ||= %x{git symbolic-ref HEAD}.strip.sub(%r{\Arefs/heads/}, '')
end
end
if $0 == __FILE__
options = ChangelogOptionParser.parse(ARGV)
ChangelogEntry.new(options)
end
# vim: ft=ruby
|
