/usr/share/perl5/Test/CPAN/Meta/YAML/Version.pm is in libtest-cpan-meta-yaml-perl 0.25-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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use warnings;
use strict;
use vars qw($VERSION);
$VERSION = '0.25';
#----------------------------------------------------------------------------
=head1 NAME
Test::CPAN::Meta::YAML::Version - Validate CPAN META data against the specification
=head1 SYNOPSIS
use Test::CPAN::Meta::YAML::Version;
=head1 DESCRIPTION
This module was written to ensure that a META.yml file, provided with a
standard distribution uploaded to CPAN, meets the specifications that are
slowly being introduced to module uploads, via the use of
L<ExtUtils::MakeMaker>, L<Module::Build> and L<Module::Install>.
This module is meant to be used together with L<Test::CPAN::Meta::YAML>, however
the code is self contained enough that you can access it directly.
See L<CPAN::Meta> for further details of the CPAN Meta Specification.
=head1 ABSTRACT
Validation of META.yml data against the CPAN Meta Specification.
=cut
#----------------------------------------------------------------------------
#############################################################################
#Specification Definitions #
#############################################################################
my %known_specs = (
'1.4' => 'http://module-build.sourceforge.net/META-spec-v1.4.html',
'1.3' => 'http://module-build.sourceforge.net/META-spec-v1.3.html',
'1.2' => 'http://module-build.sourceforge.net/META-spec-v1.2.html',
'1.1' => 'http://module-build.sourceforge.net/META-spec-v1.1.html',
'1.0' => 'http://module-build.sourceforge.net/META-spec-v1.0.html'
);
my %known_urls = map {$known_specs{$_} => $_} keys %known_specs;
my $module_map1 = { 'map' => { ':key' => { name => \&module, value => \&exversion } } };
my $module_map2 = { 'map' => { ':key' => { name => \&module, value => \&version } } };
my $no_index_1_3 = {
'map' => { file => { list => { value => \&string } },
directory => { list => { value => \&string } },
'package' => { list => { value => \&string } },
namespace => { list => { value => \&string } },
}
};
my $no_index_1_2 = {
'map' => { file => { list => { value => \&string } },
dir => { list => { value => \&string } },
'package' => { list => { value => \&string } },
namespace => { list => { value => \&string } },
}
};
my $no_index_1_1 = {
'map' => { ':key' => { name => \&keyword, list => { value => \&string } },
}
};
my %definitions = (
'1.4' => {
# 'header' => { mandatory => 1, value => \&header },
'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version},
url => { mandatory => 1, value => \&urlspec } } },
'name' => { mandatory => 1, value => \&string },
'version' => { mandatory => 1, value => \&version },
'abstract' => { mandatory => 1, value => \&string },
'author' => { mandatory => 1, list => { value => \&string } },
'license' => { mandatory => 1, value => \&license },
'generated_by' => { mandatory => 1, value => \&string },
'distribution_type' => { value => \&string },
'dynamic_config' => { value => \&boolean },
'requires' => $module_map1,
'recommends' => $module_map1,
'build_requires' => $module_map1,
'configure_requires' => $module_map1,
'conflicts' => $module_map2,
'optional_features' => {
'map' => {
':key' => { name => \&identifier,
'map' => { description => { value => \&string },
requires_packages => { value => \&string },
requires_os => { value => \&string },
excludes_os => { value => \&string },
requires => $module_map1,
recommends => $module_map1,
build_requires => $module_map1,
conflicts => $module_map2,
}
}
}
},
'provides' => {
'map' => { ':key' => { name => \&module,
'map' => { file => { mandatory => 1, value => \&file },
version => { value => \&version } } } }
},
'no_index' => $no_index_1_3,
'private' => $no_index_1_3,
'keywords' => { list => { value => \&string } },
'resources' => {
'map' => { license => { value => \&url },
homepage => { value => \&url },
bugtracker => { value => \&url },
repository => { value => \&url },
':key' => { value => \&string, name => \&resource },
}
},
# additional user defined key/value pairs
# note we can only validate the key name, as the structure is user defined
':key' => { name => \&keyword, value => \&anything },
},
'1.3' => {
# 'header' => { mandatory => 1, value => \&header },
'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version},
url => { mandatory => 1, value => \&urlspec } } },
'name' => { mandatory => 1, value => \&string },
'version' => { mandatory => 1, value => \&version },
'abstract' => { mandatory => 1, value => \&string },
'author' => { mandatory => 1, list => { value => \&string } },
'license' => { mandatory => 1, value => \&license },
'generated_by' => { mandatory => 1, value => \&string },
'distribution_type' => { value => \&string },
'dynamic_config' => { value => \&boolean },
'requires' => $module_map1,
'recommends' => $module_map1,
'build_requires' => $module_map1,
'conflicts' => $module_map2,
'optional_features' => {
'map' => {
':key' => { name => \&identifier,
'map' => { description => { value => \&string },
requires_packages => { value => \&string },
requires_os => { value => \&string },
excludes_os => { value => \&string },
requires => $module_map1,
recommends => $module_map1,
build_requires => $module_map1,
conflicts => $module_map2,
}
}
}
},
'provides' => {
'map' => { ':key' => { name => \&module,
'map' => { file => { mandatory => 1, value => \&file },
version => { value => \&version } } } }
},
'no_index' => $no_index_1_3,
'private' => $no_index_1_3,
'keywords' => { list => { value => \&string } },
'resources' => {
'map' => { license => { value => \&url },
homepage => { value => \&url },
bugtracker => { value => \&url },
repository => { value => \&url },
':key' => { value => \&string, name => \&resource },
}
},
# additional user defined key/value pairs
# note we can only validate the key name, as the structure is user defined
':key' => { name => \&keyword, value => \&anything },
},
# v1.2 is misleading, it seems to assume that a number of fields where created
# within v1.1, when they were created within v1.2. This may have been an
# original mistake, and that a v1.1 was retro fitted into the timeline, when
# v1.2 was originally slated as v1.1. But I could be wrong ;)
'1.2' => {
# 'header' => { mandatory => 1, value => \&header },
'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version},
url => { mandatory => 1, value => \&urlspec } } },
'name' => { mandatory => 1, value => \&string },
'version' => { mandatory => 1, value => \&version },
'license' => { mandatory => 1, value => \&license },
'generated_by' => { mandatory => 1, value => \&string },
'author' => { mandatory => 1, list => { value => \&string } },
'abstract' => { mandatory => 1, value => \&string },
'distribution_type' => { value => \&string },
'dynamic_config' => { value => \&boolean },
'keywords' => { list => { value => \&string } },
'private' => $no_index_1_2,
'$no_index' => $no_index_1_2,
'requires' => $module_map1,
'recommends' => $module_map1,
'build_requires' => $module_map1,
'conflicts' => $module_map2,
'optional_features' => {
'map' => {
':key' => { name => \&identifier,
'map' => { description => { value => \&string },
requires_packages => { value => \&string },
requires_os => { value => \&string },
excludes_os => { value => \&string },
requires => $module_map1,
recommends => $module_map1,
build_requires => $module_map1,
conflicts => $module_map2,
}
}
}
},
'provides' => {
'map' => { ':key' => { name => \&module,
'map' => { file => { mandatory => 1, value => \&file },
version => { value => \&version } } } }
},
'resources' => {
'map' => { license => { value => \&url },
homepage => { value => \&url },
bugtracker => { value => \&url },
repository => { value => \&url },
':key' => { value => \&string, name => \&resource },
}
},
# additional user defined key/value pairs
# note we can only validate the key name, as the structure is user defined
':key' => { name => \&keyword, value => \&anything },
},
# note that the 1.1 spec doesn't specify optional or mandatory fields, what
# appears below is assumed from later specifications.
'1.1' => {
# 'header' => { mandatory => 1, value => \&header },
'name' => { mandatory => 1, value => \&string },
'version' => { mandatory => 1, value => \&version },
'license' => { mandatory => 1, value => \&license },
'license_uri' => { mandatory => 0, value => \&url },
'generated_by' => { mandatory => 1, value => \&string },
'distribution_type' => { value => \&string },
'dynamic_config' => { value => \&boolean },
'private' => $no_index_1_1,
'requires' => $module_map1,
'recommends' => $module_map1,
'build_requires' => $module_map1,
'conflicts' => $module_map2,
# additional user defined key/value pairs
# note we can only validate the key name, as the structure is user defined
':key' => { name => \&keyword, value => \&anything },
},
# note that the 1.0 spec doesn't specify optional or mandatory fields, what
# appears below is assumed from later specifications.
'1.0' => {
# 'header' => { mandatory => 1, value => \&header },
'name' => { mandatory => 1, value => \&string },
'version' => { mandatory => 1, value => \&version },
'license' => { mandatory => 1, value => \&license },
'generated_by' => { mandatory => 1, value => \&string },
'distribution_type' => { value => \&string },
'dynamic_config' => { value => \&boolean },
'requires' => $module_map1,
'recommends' => $module_map1,
'build_requires' => $module_map1,
'conflicts' => $module_map2,
# additional user defined key/value pairs
# note we can only validate the key name, as the structure is user defined
':key' => { name => \&keyword, value => \&anything },
},
);
#############################################################################
#Code #
#############################################################################
=head1 CLASS CONSTRUCTOR
=over
=item * new( data => $data [, spec => $version] )
The constructor must be passed a valid data structure.
Optionally you may also provide a specification version. This version is then
use to ensure that the given data structure meets the respective
specification definition. If no version is provided the module will attempt to
deduce the appropriate specification version from the data structure itself.
=back
=cut
sub new {
my ($class,%hash) = @_;
# create an attributes hash
my $atts = {
'spec' => $hash{spec},
'data' => $hash{data},
};
# create the object
my $self = bless $atts, $class;
}
=head1 METHODS
=head2 Main Methods
=over
=item * parse()
Using the given data structure provided with the constructor, attempts to
parse and validate according to the appropriate specification definition.
Returns 1 if any errors found, otherwise returns 0.
=item * errors()
Returns a list of the errors found during parsing.
=back
=cut
sub parse {
my $self = shift;
my $data = $self->{data};
unless($self->{spec}) {
$self->{spec} = $data->{'meta-spec'} && $data->{'meta-spec'}{'version'} ? $data->{'meta-spec'}{'version'} : '1.0';
}
$self->check_map($definitions{$self->{spec}},$data);
return defined $self->{errors} ? 1 : 0;
}
sub errors {
my $self = shift;
return () unless($self->{errors});
return @{$self->{errors}};
}
=head2 Check Methods
=over
=item * check_map($spec,$data)
Checks whether a map (or hash) part of the data structure conforms to the
appropriate specification definition.
=item * check_list($spec,$data)
Checks whether a list (or array) part of the data structure conforms to
the appropriate specification definition.
=back
=cut
sub check_map {
my ($self,$spec,$data) = @_;
if(ref($spec) ne 'HASH') {
$self->_error( "Unknown META.yml specification, cannot validate." );
return;
}
if(ref($data) ne 'HASH') {
$self->_error( "Expected a map structure from data string or file." );
return;
}
for my $key (keys %$spec) {
next unless($spec->{$key}->{mandatory});
next if(defined $data->{$key});
push @{$self->{stack}}, $key;
$self->_error( "Missing mandatory field, '$key'" );
pop @{$self->{stack}};
}
for my $key (keys %$data) {
push @{$self->{stack}}, $key;
if($spec->{$key}) {
if($spec->{$key}{value}) {
$spec->{$key}{value}->($self,$key,$data->{$key});
} elsif($spec->{$key}{'map'}) {
$self->check_map($spec->{$key}{'map'},$data->{$key});
} elsif($spec->{$key}{'list'}) {
$self->check_list($spec->{$key}{'list'},$data->{$key});
}
} elsif ($spec->{':key'}) {
$spec->{':key'}{name}->($self,$key,$key);
if($spec->{':key'}{value}) {
$spec->{':key'}{value}->($self,$key,$data->{$key});
} elsif($spec->{':key'}{'map'}) {
$self->check_map($spec->{':key'}{'map'},$data->{$key});
} elsif($spec->{':key'}{'list'}) {
$self->check_list($spec->{':key'}{'list'},$data->{$key});
}
} else {
$self->_error( "Unknown key, '$key', found in map structure" );
}
pop @{$self->{stack}};
}
}
sub check_list {
my ($self,$spec,$data) = @_;
if(ref($data) ne 'ARRAY') {
$self->_error( "Expected a list structure" );
return;
}
if(defined $spec->{mandatory}) {
if(!defined $data->[0]) {
$self->_error( "Missing entries from mandatory list" );
}
}
for my $value (@$data) {
push @{$self->{stack}}, $value;
if(defined $spec->{value}) {
$spec->{value}->($self,'list',$value);
} elsif(defined $spec->{'map'}) {
$self->check_map($spec->{'map'},$value);
} elsif(defined $spec->{'list'}) {
$self->check_list($spec->{'list'},$value);
} elsif ($spec->{':key'}) {
$self->check_map($spec,$value);
} else {
$self->_error( "Unknown value type, '$value', found in list structure" );
}
pop @{$self->{stack}};
}
}
=head2 Validator Methods
=over
=item * header($self,$key,$value)
Validates that the YAML header is valid.
Note: No longer used as we now read the YAML data structure, not the file.
=item * url($self,$key,$value)
Validates that a given value is in an acceptable URL format
=item * urlspec($self,$key,$value)
Validates that the URL to a META.yml specification is a known one.
=item * string_or_undef($self,$key,$value)
Validates that the value is either a string or an undef value. Bit of a
catchall function for parts of the data structure that are completely user
defined.
=item * string($self,$key,$value)
Validates that a string exists for the given key.
=item * file($self,$key,$value)
Validate that a file is passed for the given key. This may be made more
thorough in the future. For now it acts like \&string.
=item * exversion($self,$key,$value)
Validates a list of versions, e.g. '<= 5, >=2, ==3, !=4, >1, <6, 0'.
=item * version($self,$key,$value)
Validates a single version string. Versions of the type '5.8.8' and '0.00_00'
are both valid. A leading 'v' like 'v1.2.3' is also valid.
=item * boolean($self,$key,$value)
Validates for a boolean value. Currently these values are '1', '0', 'true',
'false', however the latter 2 may be removed.
=item * license($self,$key,$value)
Validates that a value is given for the license. Returns 1 if an known license
type, or 2 if a value is given but the license type is not a recommended one.
=item * resource($self,$key,$value)
Validates that the given key is in CamelCase, to indicate a user defined
keyword.
=item * keyword($self,$key,$value)
Validates that key is in an acceptable format for the META.yml specification,
i.e. any in the character class [-_a-z].
For user defined keys, although not explicitly stated in the specifications
(v1.0 - v1.4), the convention is to precede the key with a pattern matching
qr{\Ax_}i. Following this any character from the character class [-_a-zA-Z]
can be used. This clarification has been added to v2.0 of the specification.
=item * identifier($self,$key,$value)
Validates that key is in an acceptable format for the META.yml specification,
for an identifier, i.e. any that matches the regular expression
qr/[a-z][a-z_]/i.
=item * module($self,$key,$value)
Validates that a given key is in an acceptable module name format, e.g.
'Test::CPAN::Meta::YAML::Version'.
=item * anything($self,$key,$value)
Usually reserved for user defined structures, allowing them to be considered
valid without a need for a specification definition for the structure.
=back
=cut
sub header {
my ($self,$key,$value) = @_;
if(defined $value) {
return 1 if($value && $value =~ /^--- #YAML:1.0/);
}
$self->_error( "file does not have a valid YAML header." );
return 0;
}
sub _uri_split {
return $_[0] =~ m,(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?,;
}
sub url {
my ($self,$key,$value) = @_;
if($value) {
my ($scheme, $auth, $path, $query, $frag) = _uri_split($value);
unless ( $scheme ) {
$self->_error( "'$value' for '$key' does not have a URL scheme" );
return 0;
}
unless ( $auth ) {
$self->_error( "'$value' for '$key' does not have a URL authority" );
return 0;
}
return 1;
} else {
$value = '<undef>';
}
$self->_error( "'$value' for '$key' is not a valid URL." );
return 0;
}
sub urlspec {
my ($self,$key,$value) = @_;
if(defined $value) {
return 1 if($value && $known_specs{$self->{spec}} eq $value);
if($value && $known_urls{$value}) {
$self->_error( 'META.yml specification URL does not match version' );
return 0;
}
}
$self->_error( 'Unknown META.yml specification' );
return 0;
}
sub string {
my ($self,$key,$value) = @_;
if(defined $value) {
return 1 if($value || $value =~ /^0$/);
}
$self->_error( "value is an undefined string" );
return 0;
}
sub string_or_undef {
my ($self,$key,$value) = @_;
return 1 unless(defined $value);
return 1 if($value || $value =~ /^0$/);
$self->_error( "No string defined for '$key'" );
return 0;
}
sub file {
my ($self,$key,$value) = @_;
return 1 if(defined $value);
$self->_error( "No file defined for '$key'" );
return 0;
}
sub exversion {
my ($self,$key,$value) = @_;
if(defined $value && ($value || $value =~ /0/)) {
my $pass = 1;
for(split(",",$value)) { $self->version($key,$_) or ($pass = 0); }
return $pass;
}
$value = '<undef>' unless(defined $value);
$self->_error( "'$value' for '$key' is not a valid version." );
return 0;
}
sub version {
my ($self,$key,$value) = @_;
if(defined $value) {
return 0 unless($value || $value =~ /0/);
return 1 if($value =~ /^\s*((<|<=|>=|>|!=|==)\s*)?v?\d+((\.\d+((_|\.)\d+)?)?)/);
} else {
$value = '<undef>';
}
$self->_error( "'$value' for '$key' is not a valid version." );
return 0;
}
sub boolean {
my ($self,$key,$value) = @_;
if(defined $value) {
return 1 if($value =~ /^(0|1|true|false)$/);
} else {
$value = '<undef>';
}
$self->_error( "'$value' for '$key' is not a boolean value." );
return 0;
}
my %licenses = (
'perl' => 'http://dev.perl.org/licenses/',
'gpl' => 'http://www.opensource.org/licenses/gpl-license.php',
'apache' => 'http://apache.org/licenses/LICENSE-2.0',
'artistic' => 'http://opensource.org/licenses/artistic-license.php',
'artistic2' => 'http://opensource.org/licenses/artistic-license-2.0.php',
'artistic-2.0' => 'http://opensource.org/licenses/artistic-license-2.0.php',
'lgpl' => 'http://www.opensource.org/licenses/lgpl-license.phpt',
'bsd' => 'http://www.opensource.org/licenses/bsd-license.php',
'gpl' => 'http://www.opensource.org/licenses/gpl-license.php',
'mit' => 'http://opensource.org/licenses/mit-license.php',
'mozilla' => 'http://opensource.org/licenses/mozilla1.1.php',
'open_source' => undef,
'unrestricted' => undef,
'restrictive' => undef,
'unknown' => undef,
);
sub license {
my ($self,$key,$value) = @_;
if(defined $value) {
return 1 if($value && exists $licenses{$value});
return 2 if($value);
} else {
$value = '<undef>';
}
$self->_error( "License '$value' is unknown" );
return 0;
}
sub resource {
my ($self,$key) = @_;
if(defined $key) {
# a valid user defined key should be alphabetic
# and contain at least one capital case letter.
return 1 if($key && $key =~ /^[a-z]+$/i && $key =~ /[A-Z]/);
} else {
$key = '<undef>';
}
$self->_error( "Resource '$key' must be in CamelCase." );
return 0;
}
sub keyword {
my ($self,$key) = @_;
if(defined $key) {
return 1 if($key && $key =~ /^([a-z][-_a-z]*)$/); # spec defined
return 1 if($key && $key =~ /^x_([a-z][-_a-z]*)$/i); # user defined
} else {
$key = '<undef>';
}
$self->_error( "Key '$key' is not a legal keyword." );
return 0;
}
sub identifier {
my ($self,$key) = @_;
if(defined $key) {
return 1 if($key && $key =~ /^([a-z][_a-z]+)$/i); # spec 2.0 defined
} else {
$key = '<undef>';
}
$self->_error( "Key '$key' is not a legal identifier." );
return 0;
}
sub module {
my ($self,$key) = @_;
if(defined $key) {
return 1 if($key && $key =~ /^[A-Za-z0-9_]+(::[A-Za-z0-9_]+)*$/);
} else {
$key = '<undef>';
}
$self->_error( "Key '$key' is not a legal module name." );
return 0;
}
sub anything { return 1 }
sub _error {
my $self = shift;
my $mess = shift;
$mess .= ' ('.join(' -> ',@{$self->{stack}}).')' if($self->{stack});
$mess .= " [Validation: $self->{spec}]";
push @{$self->{errors}}, $mess;
}
q( This release is sponsored by Made In Love: Hand made gifts for your loved ones, friends or even a treat for your own home - http://madeinlove.co.uk );
__END__
#----------------------------------------------------------------------------
=head1 BUGS, PATCHES & FIXES
There are no known bugs at the time of this release. However, if you spot a
bug or are experiencing difficulties that are not explained within the POD
documentation, please send an email to barbie@cpan.org or submit a bug to the
RT system (http://rt.cpan.org/Public/Dist/Display.html?Name=Test-CPAN-Meta-YAML).
However, it would help greatly if you are able to pinpoint problems or even
supply a patch.
Fixes are dependent upon their severity and my availability. Should a fix not
be forthcoming, please feel free to (politely) remind me.
=head1 AUTHOR
Barbie, <barbie@cpan.org>
for Miss Barbell Productions, L<http://www.missbarbell.co.uk>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2007-2015 Barbie for Miss Barbell Productions
This distribution is free software; you can redistribute it and/or
modify it under the Artistic Licence v2.
=cut
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