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namespace :update do
desc "Insert lines in CHANGELOG.md for commits between SHAs (inclusive)"
task :changelog, [:beg_sha, :end_sha] do |t, args|
args.with_defaults(:end_sha => nil)
changelog = "CHANGELOG.md"
remote = "github.com/rouge-ruby/rouge"
working_dir = Rake.application.original_dir
repo = Rouge::Tasks::Git.new(working_dir, remote)
gitlog = repo.log(args.beg_sha, args.end_sha)
text = ''
not_inserted = true
File.readlines(changelog).each do |l|
if not_inserted && l.start_with?("##")
text += Rouge::Tasks.version_line(Rouge.version)
text += Rouge::Tasks.comparison_line(remote,
repo.prev_version,
"v" + Rouge.version)
text += gitlog.converted.join("") + "\n"
not_inserted = false
end
text += l
end
File.write(changelog, text)
end
end
module Rouge
module Tasks
class Git
def initialize(dir, remote)
require 'git'
@repo = ::Git.open(dir)
@remote = remote
end
def log(beg_sha, end_sha = nil)
commits = @repo.log(100).between(beg_sha, end_sha)
Log.new(@remote, commits)
end
def prev_version
@prev_version ||= @repo
.tags
.select { |t| t.name.match?(/^v\d+\.\d+\.\d$/) }
.map { |t| t.name.slice(1..-1).split(".").map(&:to_i) }
.sort { |a,b| sort_versions(a, b) }
.last
.join(".")
.prepend("v")
end
def sort_versions(a, b)
return a[2] <=> b[2] if a[0] == b[0] && a[1] == b[1]
return a[1] <=> b[1] if a[0] == b[0]
return a[0] <=> b[0]
end
class Log
def initialize(remote, commits)
@remote = remote
@msgs = commits.map { |c| Message.new(c.message, c.author.name) }
end
def converted
@msgs.map { |m| m.formatted(@remote) }
end
class Message
def initialize(original, author)
@subject = original.match(/.*/)[0]
@author = author
end
def formatted(remote)
msg = @subject.gsub(/\(#(\d+)\)/, Tasks.link_line(remote, @author))
Tasks.message_line(msg)
end
end
end
end
def self.comparison_line(remote, previous, current)
"[Comparison with the previous version](https://#{remote}/compare/#{previous}...#{current})\n\n"
end
def self.link_line(remote, author)
"([#\\1](https://#{remote}/pull/\\1/) by #{author})"
end
def self.message_line(message)
" - #{message}\n"
end
def self.version_line(version)
"## version #{version}: #{Time.now.strftime("%Y-%m-%d")}\n\n"
end
end
end
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