use strict;
package CPAN::Reporter::PrereqCheck;
our $VERSION = '1.2010'; # VERSION
use ExtUtils::MakeMaker 6.36;
use File::Spec;
use CPAN::Version;
_run() if ! caller();
sub _run {
my %saw_mod;
# read module and prereq string from STDIN
local *DEVNULL;
open DEVNULL, ">" . File::Spec->devnull; ## no critic
# ensure actually installed, not ./inc/... or ./t/..., etc.
local @INC = grep { $_ ne '.' } @INC;
while ( <> ) {
m/^(\S+)\s+([^\n]*)/;
my ($mod, $need) = ($1, $2);
die "Couldn't read module for '$_'" unless $mod;
$need = 0 if not defined $need;
# only evaluate a module once
next if $saw_mod{$mod}++;
# get installed version from file with EU::MM
my($have, $inst_file, $dir, @packpath);
if ( $mod eq "perl" ) {
$have = $];
}
else {
@packpath = split( /::/, $mod );
$packpath[-1] .= ".pm";
if (@packpath == 1 && $packpath[0] eq "readline.pm") {
unshift @packpath, "Term", "ReadLine"; # historical reasons
}
INCDIR:
foreach my $dir (@INC) {
my $pmfile = File::Spec->catfile($dir,@packpath);
if (-f $pmfile){
$inst_file = $pmfile;
last INCDIR;
}
}
# get version from file or else report missing
if ( defined $inst_file ) {
$have = MM->parse_version($inst_file);
$have = "0" if ! defined $have || $have eq 'undef';
# report broken if it can't be loaded
# "select" to try to suppress spurious newlines
select DEVNULL; ## no critic
if ( ! _try_load( $mod, $have ) ) {
select STDOUT; ## no critic
print "$mod 0 broken\n";
next;
}
select STDOUT; ## no critic
}
else {
print "$mod 0 n/a\n";
next;
}
}
# complex requirements are comma separated
my ( @requirements ) = split /\s*,\s*/, $need;
my $passes = 0;
RQ:
for my $rq (@requirements) {
if ($rq =~ s|>=\s*||) {
# no-op -- just trimmed string
} elsif ($rq =~ s|>\s*||) {
if (CPAN::Version->vgt($have,$rq)){
$passes++;
}
next RQ;
} elsif ($rq =~ s|!=\s*||) {
if (CPAN::Version->vcmp($have,$rq)) {
$passes++; # didn't match
}
next RQ;
} elsif ($rq =~ s|<=\s*||) {
if (! CPAN::Version->vgt($have,$rq)){
$passes++;
}
next RQ;
} elsif ($rq =~ s|<\s*||) {
if (CPAN::Version->vlt($have,$rq)){
$passes++;
}
next RQ;
}
# if made it here, then it's a normal >= comparison
if (! CPAN::Version->vlt($have, $rq)){
$passes++;
}
}
my $ok = $passes == @requirements ? 1 : 0;
print "$mod $ok $have\n"
}
return;
}
sub _try_load {
my ($module, $have) = @_;
# M::I < 0.95 dies in require, so we can't check if it loads
# Instead we just pretend that it works
if ( $module eq 'Module::Install' && $have < 0.95 ) {
return 1;
}
# loading Acme modules like Acme::Bleach can do bad things,
# so never try to load them; just pretend that they work
elsif( $module =~ /^Acme::/ ) {
return 1;
}
my $file = "$module.pm";
$file =~ s{::}{/}g;
return eval {require $file; 1}; ## no critic
}
1;
# ABSTRACT: Modulino for prerequisite tests
__END__
=pod
=encoding utf-8
=head1 NAME
CPAN::Reporter::PrereqCheck - Modulino for prerequisite tests
=head1 VERSION
version 1.2010
=head1 SYNOPSIS
require CPAN::Reporter::PrereqCheck;
my $prereq_check = $INC{'CPAN/Reporter/PrereqCheck.pm'};
my $result = qx/$perl $prereq_check < $prereq_file/;
=head1 DESCRIPTION
This modulino determines whether a list of prerequisite modules are
available and, if so, their version number. It is designed to be run
as a script in order to provide this information from the perspective of
a subprocess, just like CPAN::Reporter's invocation of C<<< perl Makefile.PL >>>
and so on.
It reads a module name and prerequisite string pair from each line of input
and prints out the module name, 0 or 1 depending on whether the prerequisite
is satisfied, and the installed module version. If the module is not
available, it will print "nE<sol>a" for the version. If the module is available
but can't be loaded, it will print "broken" for the version. Modules
without a version will be treated as being of version "0".
No user serviceable parts are inside. This modulino is packaged for
internal use by CPAN::Reporter.
=head1 BUGS
Please report any bugs or feature using the CPAN Request Tracker.
Bugs can be submitted through the web interface at
L<http://rt.cpan.org/Dist/Display.html?Queue=CPAN-Reporter>
When submitting a bug or request, please include a test-file or a patch to an
existing test-file that illustrates the bug or desired feature.
=head1 SEE ALSO
=over
=item *
L<CPAN::Reporter> -- main documentation
=back
=head1 AUTHOR
David Golden <dagolden@cpan.org>
=head1 CONTRIBUTORS
=over 4
=item *
Alexandr Ciornii <alexchorny@gmail.com>
=item *
Breno G. de Oliveira <garu@cpan.org>
=item *
Christian Walde <walde.christian@googlemail.com>
=item *
Kent Fredric <kentfredric@gmail.com>
=item *
Matthew Musgrove <mr.muskrat@gmail.com>
=back
=head1 COPYRIGHT AND LICENSE
This software is Copyright (c) 2006 by David Golden.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004
=cut