build

#!/usr/bin/env ruby

require 'fileutils'

# force working directory
Dir.chdir(File.dirname(__FILE__))

# taken from http://blog.macromates.com/2006/wrapping-text-with-regular-expressions/
def wrap_text(txt, col=80)
  txt.gsub(/(.{1,#{col}})( +|$\n?)|(.{1,#{col}})/,"\\1\\3\n") 
end

# based on http://snipplr.com/view/6261/ruby-git-changelog/
def generate_change_log
  output = ""
  changes=`git log -n 50 --pretty='format:%ci::%an::%s%n%b::::'`
  changes.split('::::').each do |change|
    date, author, subject = change.chomp.split("::")
    date, time, zone = date.split(" ")	
    output << "#{author}  #{date}\n\n\t* #{wrap_text(subject.strip.gsub("\n","\n* ")).gsub("\n","\n\t")}\n"
  end
  File.open('ChangeLog.txt', 'w') {|f| f.write(output) }
end 

def update_repository
  # raise exception if local modifications...
  `git status | egrep "new file|modified" > /dev/null`
  raise Exception, "Failed to update repository - you have un-committed local changes" if $? == 0
  `git fetch`
  `git rebase origin/master`
end

def create_zip_archive
  file_name = "speckcms_#{Time.now.strftime("%Y%m%d")}.zip"
  untracked_files = `git clean --dry-run | sed -e 's/Would remove //g'`.split("\n")
  untracked_files.delete('ChangeLog.txt') # warning: delete returns nil if obj not found
  untracked_files.map!{|f| "speck/#{f}"}
  Dir.chdir ".." do
    FileUtils.rm_rf file_name
    `zip -r #{file_name} speck -x "*.git*" "cache/*.wddx" "speck/build"`
    `zip -d #{file_name} #{untracked_files.join(' ')}` unless untracked_files.empty?
  end
end

puts "Updating repository..."
update_repository

puts "Generating change log..."
generate_change_log

puts "Creating zip archive..."
create_zip_archive