Software::LicenseUtils - little useful bits of code for licensey things


version 0.104002


This module is part of CPAN toolchain, or is treated as such. As such, it follows the agreement of the Perl Toolchain Gang to require no newer version of perl than v5.8.1. This version may change by agreement of the Toolchain Gang, but for now is governed by the Lancaster Consensus of 2013.



  my @guesses = Software::LicenseUtils->guess_license_from_pod($pm_text);

Given text containing POD, like a .pm file, this method will attempt to guess at the license under which the code is available. This method will return either a list of Software::License classes names (as strings) or false.

This method looks for a POD heading like 'license', 'copyright', or 'legal'.

Calling this method in scalar context is a fatal error.


  my @guesses = Software::LicenseUtils->guess_license_from_meta($meta_str);

Given the content of the META.(yml|json) file found in a CPAN distribution, this method makes a guess as to which licenses may apply to the distribution. It will return a list of zero or more Software::License instances or classes.


  my @guesses = Software::LicenseUtils->guess_license_from_meta_key($key, $v);

This method returns zero or more Software::License classes known to use $key as their META key. If $v is supplied, it specifies whether to treat $key as a v1 or v2 meta entry. Any value other than 1 or 2 will raise an exception.


  my $license_object = Software::LicenseUtils->new_from_short_name( {
     short_name => 'GPL-1',
     holder => 'X. Ample'
  }) ;

Create a new Software::License object from the license specified with short_name. Known short license names are GPL-*, LGPL-* , Artistic and Artistic-*


  my $license_object = Software::LicenseUtils->new_from_spdx_expression( {
     spdx_expression => 'MPL-2.0',
     holder => 'X. Ample'
  }) ;

Create a new Software::License object from the license specified with spdx_expression. Some licenses doesn't have an spdx identifier (for example Software::License::Perl_5), so you can pass spdx identifier but also expressions. Known spdx license identifiers are BSD, MPL-1.0.


Ricardo Signes <>


This software is copyright (c) 2022 by Ricardo Signes.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.