pac.rb

#!/usr/bin/env ruby
#encoding: utf-8
require 'docopt'
require 'liquid'
require_relative 'lib/core'
require_relative 'lib/report'

doc = Core.cli_text(__FILE__)

begin
  require "pp"

  #Versioning strategy see the file docs/versioning.md
  #We need to read where the symlink points to because the docker container links pac to /usr/bin
  def version
    path = File.symlink?(__FILE__) ? File.readlink(__FILE__) : __FILE__
    dir = File.dirname(path)
    if File.exist?(dir+'/version.stamp')
      version = File.read(dir+'/version.stamp')
    else
      version = "Version "+File.read(dir+'/version.properties').split("=")[1]
    end
    version
  end

  input = Docopt::docopt(doc)

  #This should print out any and all errors related to creating settings for PAC. This captures
  #JSON parser errors.
  begin
    configuration = Core.read_settings_file(input)
    loaded = Core.generate_settings(input, configuration)
    #Load the settings
    Core.settings = loaded
  rescue JSON::ParserError => pe
    Logging.verboseprint(0, "[PAC] Error paring JSON from --properties switch")
    Logging.verboseprint(0, "[PAC] Exception caught while parsing command line options: #{pe}")
    exit 6
  rescue Exception => e
    Logging.verboseprint(0, "[PAC] Unspecified error caught while creating configuration")
    Logging.verboseprint(0, "[PAC] Exception caught while creating configuration: #{e}")
    exit 7
  end

  if (input['from'])
    commit_map = Core.vcs.get_delta(input['<oldest-ref>'], input['--to'])
  elsif (input['from-latest-tag'])
    found_tag = Core.vcs.get_latest_tag(input['<approximation>'])
    commit_map = Core.vcs.get_delta(found_tag, input['<newest-ref>'])
  end

  #This is all our current tasks (PACTaskCollection) Each task is uniquely identified by an ID.
  #We need to iterate each task system
  tasks = Core.task_id_list(commit_map)
  everything_ok = true
  #Apply the task system(s) to each task. Basically populate each task with data from the task system(s)
  Core.settings[:task_systems].each do |ts|
    res = Core.apply_task_system(ts, tasks)
    everything_ok &= res
  end

  #Write the ID report (Basically just a list of referenced and non-referenced issues)
  #Takes the list of discovered tasks, and only needs the template settings
  generator = Report::Generator.new(tasks, commit_map)
  generator.generate(Core.settings)
  unless everything_ok
  	if Core.settings[:general][:strict]
  		exit 15
  	else
  	  Logging.verboseprint(1, '[PAC] Ignoring encountered errors. Strict mode is disabled.')
  	  exit 0
  	end
  end

rescue Docopt::Exit => e
  puts "Praqmatic Automated Changelog (PAC)"
  puts "#{version}\n"
  puts e.message
  puts
end