class GitV

# File lib/gitv/gitv.rb, line 2
def initialize(src_root = nil, version_file = nil)
  @src_root = src_root || Dir.pwd
  @version_file = version_file || File.join( 'lib', 'data', 'version' )
  @abs_version_file = File.join( @src_root, @version_file )
end

# File lib/gitv/gitv.rb, line 12
def cache
  FileUtils.rm_rf( @abs_version_file )
  FileUtils.mkdir_p( File.dirname( @abs_version_file ) )
  File.write( @abs_version_file, version )

  @version_file
end

# File lib/gitv/gitv.rb, line 8
def version
  @ver ||= retrieve_info
end

# File lib/gitv/gitv.rb, line 26
def cached_version
  File.read( @abs_version_file )
end

# File lib/gitv/gitv.rb, line 30
def git_version
  v = %x(git describe --tags --dirty)
  if m = v.match( /^v([0-9]+)\.([0-9]+)\.([0-9]+)(.*)$/ )
    "#{m[1]}.#{m[2]}.#{m[3]}#{m[4].gsub( '-', '.' )}"
  else
    raise "Failed to parse version string #{v}"
  end
end

# File lib/gitv/gitv.rb, line 22
def retrieve_info
  File.directory?( File.join( @src_root, '.git' ) ) ? git_version : cached_version
end