root/lang/ruby/coderepos_stat/Rakefile

require 'rubygems'
require 'rake'
require 'rake/clean'

desc 'update svn log'
file 'svn_log.txt' do |t|
  # FIXME: it's better to user can specify revision range and limit number
  sh %[svn log --xml -v -r {2007-12-01}:HEAD http://svn.coderepos.org/share/ > svn_log.txt]
end

desc 'generate data file from svn_log.txt'
task 'gendata' => ['svn_log.txt'] do
  require 'hpricot' 
  require 'pathname'
  require 'yaml'
  require 'date'
  doc = Hpricot.parse(open('svn_log.txt').read)
  doc.search('/log/logentry') do |logentry|
    # SEE: http://coderepos.org/share/wiki/commit-ping/SITEINFO
    data = {}
    data['author'] = logentry.search('/author').inner_text
    data['comment'] = logentry.search('/msg').inner_text
    date = DateTime.parse(logentry.search('/date').inner_text).new_offset('jst')
    data['date'] = date.strftime('%Y-%m-%d %H:%M:%S %z')
    data['files'] = []
    logentry.search('/paths/path').each do |path|
      file = {
        'path'  => path.inner_text,
        'status' => path['action'],
      }
      data['files'].push file
    end
    path = Pathname("data/#{date.strftime('%Y%m%d/commit-%H%M%S')}.yaml")
    unless path.parent.exist?
      path.parent.mkpath
    end
    if path.exist? 
      path.rename("#{path.to_s}.backup#{Time.now.strftime('%Y%m%d%H%M%S')}")
    end
    path.open('w') do |f|
      YAML.dump(data, f)
    end
  end
end

desc 'commit count by committer from svn_log.txt'
task 'commit_ranking' => ['svn_log.txt'] do
  require 'hpricot'

  doc = Hpricot.parse(open('svn_log.txt').read)
  commit_count_of = Hash.new(0)
  doc.search('/log/logentry') do |logentry|
    author = logentry.search('/author').inner_text
    commit_count_of[author] += 1
  end
  commit_count_of.sort_by {|key,val| -1 * val }.each do |arr|
    author, commit_count = *arr
    puts "#{author}\t#{commit_count}"
  end
end

desc 'cleanbackup'
task :cleanbackup do
  require 'pathname'
  Pathname.glob('data/*/*.yaml.backup*') do |path|
    path.delete
  end
end

task :clean => [:cleanbackup]