ruby-changes.rb - create template for ruby-trunk-changes

ruby-changes.rb

#!/usr/bin/env ruby

module Svn
  class Revision
    def initialize(str)
      unless /r(\d+) \| (\S+) \| (\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} \S+)/ =~ str
        raise "unrecognized svn log message #{str}"
      end
      @revision = Regexp.last_match(1)
      @developer = Regexp.last_match(2)
      @time = Regexp.last_match(3)
      @revision = Integer(@revision)
      @msg = str.split(/\n/)[2..-1].join("\n")
    end
    attr_reader :revision, :developer, :time, :msg
  end

  module Log
    def format_time(time)
      "{\"#{time.strftime("%Y-%m-%d %H:%M:%S")}\"}"
    end
    module_function :format_time

    def revisions(root, from, to="HEAD", branch="trunk")
      if from.is_a?(Time)
        from = format_time(from)
      end
      if to.is_a?(Time)
        to = format_time(to)
      end
      msg = `svn log --revision #{from}:#{to} #{root}/#{branch}`
      revs = msg.split(/^-{72}$/).select{|l| /\S+/ =~ l }
      revs.map{|msg| Revision.new(msg) }
    end
    module_function :revisions
  end
end

def revisions(config, from, to="HEAD")
  Svn::Log.revisions(config[:root], from, to, config[:branch] || "trunk")
end

def viewvc_uri(revision)
  "http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=#{revision}"
end

def filter_anchor(msg)
  [
    [ /\[ruby-dev:(\d+)\]/, '<a href="http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-dev/\\1">\\0</a>' ],
    [ /\[ruby-list:(\d+)\]/, '<a href="http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/\\1">\\0</a>' ],
    [ /\[ruby-core:(\d+)\]/, '<a href="http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/\\1">\\0</a>' ],
    [ /\[ruby-talk:(\d+)\]/, '<a href="http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/\\1">\\0</a>' ],
    [ /\[Bug #(\d+)\]/, '<a href="http://redmine.ruby-lang.org/issues/show/\\1">\\0</a>' ],
    [ /^\s*\*/, "-" ],
  ].each do |pat, sub|
    msg.gsub!(pat, sub)
  end
  msg
end

def create_template(port, config, from, opt={})
  revs = revisions(config, from, opt[:to] || "HEAD")
  unless revs.empty?
    r1 = revs[0].revision
    r2 = revs[-1].revision
    port << "*ruby_trunk_changes_#{r1}_#{r2}*[ruby][changes]ruby-trunk-changes r#{r1} - r#{r2}\n"
    port << "\n"
    revs.each do |rev|
      port << "** %s:<a href=\"%s\">r%d %s</a>\n" % [rev.developer, viewvc_uri(rev.revision), rev.revision, rev.time]
      port << filter_anchor(rev.msg)
      port << "\n\n"
    end
  end
end

config = {
  :root => "http://svn.ruby-lang.org/repos/ruby",
  :branch => "trunk",
}

if ARGV[0]
  from = Integer(ARGV[0])
else
  from = Time.now - 24 * 60 * 60
end
create_template($stdout, config, from)