#
# The EC system generates a Version file that looks like this:
#
#    RELEASE = 2015 1 ;
#    PATCHLEVEL = 1054991 ;
#    SUPPDATE = 2015 05 05 ;
#
# For locally run tests, it looks like this:
#
#    RELEASE = 2099 9 main ;
#    PATCHLEVEL = 9999999 ;
#    SUPPDATE = 2099 09 09 ;
#
# We have two kinds of version strings we basically will generate:
#
# 1. The official P4Ruby string will be "RELEASE[0].RELEASE[1].PATCHLEVEL",
#    e.g., '2015.1.1054991' from the Version file example above
#
# If a Version file exists, but, has a third argument, we then use the third
# argument as an "alpha" tag, e.g., ''
#
# If no Version file exists, we default things out to our "test" values.
#

DEFAULT_YEAR = '2099'
DEFAULT_REV = '9'
DEFAULT_CHANGELIST = '9999999'
DEFAULT_BRANCH = 'test'

VERSION_PATH = File.absolute_path('../../../p4/Version', __FILE__)

class P4
  if File.exists?(VERSION_PATH)
    vals = {}
    IO.readlines(VERSION_PATH).each do |line|
      if /^(?<key>\w+) = (?<value>.*) ;$/ =~ line
        vals[key] = value.strip.split(/\s+/)
      end
    end
    year = DEFAULT_YEAR
    if vals.key?('RELEASE') and vals['RELEASE'].length > 0
      year = vals['RELEASE'][0]
    end
    rev = DEFAULT_REV
    if vals.key?('RELEASE') and vals['RELEASE'].length > 1
      rev = vals['RELEASE'][1]
    end
    branch = DEFAULT_BRANCH
    if vals.key?('RELEASE') and vals['RELEASE'].length > 2
      branch = vals['RELEASE'][2]
    elsif vals.key?('RELEASE') and vals['RELEASE'].length == 2
      branch = nil
    end
    change = DEFAULT_CHANGELIST
    if vals.key?('PATCHLEVEL')
      change = vals['PATCHLEVEL'][0]
    end

    if branch
      Version = VERSION = "#{year}.#{rev}.0.#{branch}#{change}"
    else
      Version = VERSION = "#{year}.#{rev}.#{change}"
    end
  else
    Version = VERSION = "#{DEFAULT_YEAR}.#{DEFAULT_REV}.0.#{DEFAULT_BRANCH}#{DEFAULT_CHANGELIST}"
  end
end