/usr/share/perl5/DBIx/Class/Schema/Loader/Optional/Dependencies.pm is in libdbix-class-schema-loader-perl 0.07042-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 | package DBIx::Class::Schema::Loader::Optional::Dependencies;
use warnings;
use strict;
use Carp;
# Stolen from DBIx::Class
# NO EXTERNAL NON-5.8.1 CORE DEPENDENCIES EVER (e.g. C::A::G)
# This module is to be loaded by Makefile.PM on a pristine system
# POD is generated automatically by calling _gen_pod from the
# Makefile.PL in $AUTHOR mode
my $reqs = {
dist => {
#'Module::Install::Pod::Inherit' => '0.01',
},
use_moose => {
req => {
'Moose' => '1.12',
'MooseX::NonMoose' => '0.25',
'namespace::autoclean' => '0.09',
'MooseX::MarkAsMethods' => '0.13',
},
pod => {
title => 'use_moose',
desc => 'Modules required for the use_moose option',
},
},
dbicdump_config => {
req => {
'Config::Any' => '0',
},
pod => {
title => 'dbicdump config file',
desc => 'Modules required for using a config file with dbicdump',
},
},
test_dbicdump_config => {
req => {
'Config::Any' => '0',
'Config::General' => '0',
},
pod => {
title => 'dbicdump config file testing',
desc => 'Modules required for using testing using a config file with dbicdump',
},
},
test_pod => {
req => {
'Test::Pod' => '1.14',
'Pod::Simple' => '3.22',
},
pod => {
title => 'POD testing',
desc => 'Modules required for testing POD in this distribution',
},
},
};
sub req_list_for {
my ($class, $group) = @_;
croak "req_list_for() expects a requirement group name"
unless $group;
my $deps = $reqs->{$group}{req}
or croak "Requirement group '$group' does not exist";
return { %$deps };
}
our %req_availability_cache;
sub req_ok_for {
my ($class, $group) = @_;
croak "req_ok_for() expects a requirement group name"
unless $group;
$class->_check_deps ($group) unless $req_availability_cache{$group};
return $req_availability_cache{$group}{status};
}
sub req_missing_for {
my ($class, $group) = @_;
croak "req_missing_for() expects a requirement group name"
unless $group;
$class->_check_deps ($group) unless $req_availability_cache{$group};
return $req_availability_cache{$group}{missing};
}
sub req_errorlist_for {
my ($class, $group) = @_;
croak "req_errorlist_for() expects a requirement group name"
unless $group;
$class->_check_deps ($group) unless $req_availability_cache{$group};
return $req_availability_cache{$group}{errorlist};
}
sub _check_deps {
my ($class, $group) = @_;
my $deps = $class->req_list_for ($group);
my %errors;
for my $mod (keys %$deps) {
if (my $ver = $deps->{$mod}) {
eval "use $mod $ver ()";
}
else {
eval "require $mod";
}
$errors{$mod} = $@ if $@;
}
if (keys %errors) {
my $missing = join (', ', map { $deps->{$_} ? "$_ >= $deps->{$_}" : $_ } (sort keys %errors) );
$missing .= " (see $class for details)" if $reqs->{$group}{pod};
$req_availability_cache{$group} = {
status => 0,
errorlist => { %errors },
missing => $missing,
};
}
else {
$req_availability_cache{$group} = {
status => 1,
errorlist => {},
missing => '',
};
}
}
sub req_group_list {
return { map { $_ => { %{ $reqs->{$_}{req} || {} } } } (keys %$reqs) };
}
# This is to be called by the author only (automatically in Makefile.PL)
sub _gen_pod {
my $class = shift;
my $modfn = __PACKAGE__ . '.pm';
$modfn =~ s/\:\:/\//g;
my $podfn = __FILE__;
$podfn =~ s/\.pm$/\.pod/;
my $distver =
eval { require DBIx::Class::Schema::Loader; DBIx::Class::Schema::Loader->VERSION; }
||
do {
warn
"\n\n---------------------------------------------------------------------\n" .
'Unable to load the DBIx::Class::Schema::Loader module to determine current ' .
'version, possibly due to missing dependencies. Author-mode autodocumentation ' .
"halted\n\n" . $@ .
"\n\n---------------------------------------------------------------------\n"
;
'*UNKNOWN*'; # rv
}
;
my @chunks = (
<<"EOC",
#########################################################################
##################### A U T O G E N E R A T E D ########################
#########################################################################
#
# The contents of this POD file are auto-generated. Any changes you make
# will be lost. If you need to change the generated text edit _gen_pod()
# at the end of $modfn
#
EOC
'=head1 NAME',
"$class - Optional module dependency specifications (for module authors)",
'=head1 SYNOPSIS',
<<EOS,
Somewhere in your build-file (e.g. L<Module::Install>'s Makefile.PL):
...
configure_requires 'DBIx::Class::Schema::Loader' => '$distver';
require $class;
my \$use_moose_deps = $class->req_list_for ('use_moose');
for (keys %\$use_moose_deps) {
requires \$_ => \$use_moose_deps->{\$_};
}
...
Note that there are some caveats regarding C<configure_requires()>, more info
can be found at L<Module::Install/configure_requires>
EOS
'=head1 DESCRIPTION',
<<'EOD',
Some of the features of L<DBIx::Class::Schema::Loader> have external
module dependencies on their own. In order not to burden the average user
with modules he will never use, these optional dependencies are not included
in the base Makefile.PL. Instead an exception with a descriptive message is
thrown when a specific feature is missing one or several modules required for
its operation. This module is the central holding place for the current list
of such dependencies.
EOD
'=head1 CURRENT REQUIREMENT GROUPS',
<<'EOD',
Dependencies are organized in C<groups> and each group can list one or more
required modules, with an optional minimum version (or 0 for any version).
EOD
);
for my $group (sort keys %$reqs) {
my $p = $reqs->{$group}{pod}
or next;
my $modlist = $reqs->{$group}{req}
or next;
next unless keys %$modlist;
push @chunks, (
"=head2 $p->{title}",
"$p->{desc}",
'=over',
( map { "=item * $_" . ($modlist->{$_} ? " >= $modlist->{$_}" : '') } (sort keys %$modlist) ),
'=back',
"Requirement group: B<$group>",
);
}
push @chunks, (
'=head1 METHODS',
'=head2 req_group_list',
'=over',
'=item Arguments: $none',
'=item Returns: \%list_of_requirement_groups',
'=back',
<<EOD,
This method should be used by DBIx::Class packagers, to get a hashref of all
dependencies keyed by dependency group. Each key (group name) can be supplied
to one of the group-specific methods below.
EOD
'=head2 req_list_for',
'=over',
'=item Arguments: $group_name',
'=item Returns: \%list_of_module_version_pairs',
'=back',
<<EOD,
This method should be used by DBIx::Class extension authors, to determine the
version of modules a specific feature requires in the B<current> version of
L<DBIx::Class::Schema::Loader>. See the L</SYNOPSIS> for a real-world
example.
EOD
'=head2 req_ok_for',
'=over',
'=item Arguments: $group_name',
'=item Returns: 1|0',
'=back',
'Returns true or false depending on whether all modules required by C<$group_name> are present on the system and loadable',
'=head2 req_missing_for',
'=over',
'=item Arguments: $group_name',
'=item Returns: $error_message_string',
'=back',
<<EOD,
Returns a single line string suitable for inclusion in larger error messages.
This method would normally be used by L<DBIx::Class::Schema::Loader>
maintainers, to indicate to the user that he needs to install specific modules
before he will be able to use a specific feature.
For example if some of the requirements for C<use_moose> are not available,
the returned string could look like:
Moose >= 0 (see use_moose for details)
The author is expected to prepend the necessary text to this message before
returning the actual error seen by the user.
EOD
'=head2 req_errorlist_for',
'=over',
'=item Arguments: $group_name',
'=item Returns: \%list_of_loaderrors_per_module',
'=back',
<<'EOD',
Returns a hashref containing the actual errors that occurred while attempting
to load each module in the requirement group.
EOD
'=head1 AUTHOR',
'See L<DBIx::Class/CONTRIBUTORS>.',
'=head1 LICENSE',
'You may distribute this code under the same terms as Perl itself',
);
open (my $fh, '>', $podfn) or croak "Unable to write to $podfn: $!";
print $fh join ("\n\n", @chunks);
close ($fh);
}
1;
|