namespace :metricks do
CHURN_DIR = File.join(Metricks::BASE_DIRECTORY, 'churn')
desc "Which files change the most"
task :churn do
date_range, minimum_churn_count = churn_options()
svn_logs = `svn log #{date_range} --verbose`.split(/\n/).select {|line| line.strip =~ /^[A,M]/}
changes = {}
svn_logs.each do |line|
line.strip =~ /^[A,M] (.*)/
changes[$1] ? changes[$1] += 1 : changes[$1] = 1
end
write_churn_file(changes.reject {|file, change_count| change_count < minimum_churn_count})
system("open #{CHURN_DIR}/index.html") if PLATFORM['darwin']
end
def churn_options
options = defined?(CHURN_OPTIONS) ? CHURN_OPTIONS : {}
if options[:start_date]
require File.dirname(__FILE__) + '/../../../../config/environment'
date_range = "--revision {#{options[:start_date].call.strftime('%Y-%m-%d')}}:{#{Time.now.strftime('%Y-%m-%d')}}"
else
date_range = ""
end
minimum_churn_count = options[:minimum_churn_count] ? options[:minimum_churn_count] : 5
return date_range, minimum_churn_count
end
def write_churn_file changes
FileUtils.mkdir_p(CHURN_DIR, :verbose => false) unless File.directory?(CHURN_DIR)
File.open("#{CHURN_DIR}/index.html", "w+") do |file|
file << CHURN_FILE_BEGINING
changes.to_a.sort {|x,y| y[1] <=> x[1]}.each do |change|
file << "| #{change[0]} | #{change[1]} |
\n"
end
file << CHURN_FILE_END
end
end
CHURN_FILE_BEGINING = <<-EOS
Source Control Churn Results
Source Control Churn Results
| File Path | Times Changed |
|---|
EOS
CHURN_FILE_END = <<-EOS
EOS
end