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=head1 NAME
CPAN::Plugin::Specfile - Proof of concept implementation of a trivial CPAN::Plugin
=head1 SYNOPSIS
# once in the cpan shell
o conf plugin_list push CPAN::Plugin::Specfile
# make permanent
o conf commit
# any time in the cpan shell to write a spec file
test Acme::Meta
# disable
# if it is the last in plugin_list:
o conf plugin_list pop
# otherwise, determine the index to splice:
o conf plugin_list
# and then use splice, e.g. to splice position 3:
o conf plugin_list splice 3 1
=head1 DESCRIPTION
Implemented as a post-test hook, this plugin writes a specfile after
every successful test run. The content is also written to the
terminal.
As a side effect, the timestamps of the written specfiles reflect the
linear order of all dependencies.
B<WARNING:> This code is just a small demo how to use the plugin
system of the CPAN shell, not a full fledged spec file writer. Do not
expect new features in this plugin.
=head2 OPTIONS
The target directory to store the spec files in can be set using C<dir>
as in
o conf plugin_list push CPAN::Plugin::Specfile=dir,/tmp/specfiles-000042
The default directory for this is the
C<plugins/CPAN::Plugin::Specfile> directory in the I<cpan_home>
directory.
=head1 AUTHOR
Andreas Koenig <andk@cpan.org>, Branislav Zahradnik <barney@cpan.org>
=cut
package CPAN::Plugin::Specfile;
our $VERSION = '0.02';
use File::Path;
use File::Spec;
sub __accessor {
my ($class, $key) = @_;
no strict 'refs';
*{$class . '::' . $key} = sub {
my $self = shift;
if (@_) {
$self->{$key} = shift;
}
return $self->{$key};
};
}
BEGIN { __PACKAGE__->__accessor($_) for qw(dir dir_default) }
sub new {
my($class, @rest) = @_;
my $self = bless {}, $class;
while (my($arg,$val) = splice @rest, 0, 2) {
$self->$arg($val);
}
$self->dir_default(File::Spec->catdir($CPAN::Config->{cpan_home},"plugins",__PACKAGE__));
$self;
}
sub post_test {
my $self = shift;
my $distribution_object = shift;
my $distribution = $distribution_object->pretty_id;
unless ($CPAN::META->has_inst("CPAN::DistnameInfo")){
$CPAN::Frontend->mydie("CPAN::DistnameInfo not installed; cannot continue");
}
my $d = CPAN::Shell->expand("Distribution",$distribution)
or $CPAN::Frontend->mydie("Unknowns distribution '$distribution'\n");
my $build_dir = $d->{build_dir} or $CPAN::Frontend->mydie("Distribution has not been built yet, cannot proceed");
my %contains = map {($_ => undef)} $d->containsmods;
my @m;
my $width = 16;
my $header = sub {
my($header,$value) = @_;
push @m, sprintf("%-s:%*s%s\n", $header, $width-length($header), "", $value);
};
my $dni = CPAN::DistnameInfo->new($distribution);
my $dist = $dni->dist;
my $summary = CPAN::Shell->_guess_manpage($d,\%contains,$dist);
$header->("Name", "perl-$dist");
my $version = $dni->version;
$header->("Version", $version);
$header->("Release", "1%{?dist}");
#Summary: Template processing system
#Group: Development/Libraries
#License: GPL+ or Artistic
#URL: http://www.template-toolkit.org/
#Source0: http://search.cpan.org/CPAN/authors/id/A/AB/ABW/Template-Toolkit-%{version}.tar.gz
#Patch0: Template-2.22-SREZIC-01.patch
#BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
for my $h_tuple
([Summary => $summary],
[Group => "Development/Libraries"],
[License =>],
[URL =>],
[BuildRoot => "%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)"],
[Requires => "perl(:MODULE_COMPAT_%(eval \"`%{__perl} -V:version`\"; echo \$version))"],
) {
my($h,$v) = @$h_tuple;
$v = "unknown" unless defined $v;
$header->($h, $v);
}
$header->("Source0", sprintf(
"http://search.cpan.org/CPAN/authors/id/%s/%s/%s",
substr($distribution,0,1),
substr($distribution,0,2),
$distribution
));
require POSIX;
my @xs = glob "$build_dir/*.xs"; # quick try
unless (@xs) {
require ExtUtils::Manifest;
my $manifest_file = "$build_dir/MANIFEST";
my $manifest = ExtUtils::Manifest::maniread($manifest_file);
@xs = grep /\.xs$/, keys %$manifest;
}
if (! @xs) {
$header->('BuildArch', 'noarch');
}
for my $k (sort keys %contains) {
my $m = CPAN::Shell->expand("Module",$k);
my $v = $contains{$k} = $m->cpan_version;
my $vspec = $v eq "undef" ? "" : " = $v";
$header->("Provides", "perl($k)$vspec");
}
if (my $prereq_pm = $d->{prereq_pm}) {
my %req;
for my $reqkey (keys %$prereq_pm) {
while (my($k,$v) = each %{$prereq_pm->{$reqkey}}) {
$req{$k} = $v;
}
}
if (-e "$build_dir/Build.PL" && ! exists $req{"Module::Build"}) {
$req{"Module::Build"} = 0;
}
for my $k (sort keys %req) {
next if $k eq "perl";
my $v = $req{$k};
my $vspec = defined $v && length $v && $v > 0 ? " >= $v" : "";
$header->(BuildRequires => "perl($k)$vspec");
next if $k =~ /^(Module::Build)$/; # MB is always only a
# BuildRequires; if we
# turn it into a
# Requires, then we
# would have to make it
# a BuildRequires
# everywhere we depend
# on *one* MB built
# module.
$header->(Requires => "perl($k)$vspec");
}
}
push @m, "\n%define _use_internal_dependency_generator 0
%define __find_requires %{nil}
%define __find_provides %{nil}
";
push @m, "\n%description\n%{summary}.\n";
push @m, "\n%prep\n%setup -q -n $dist-%{version}\n";
if (-e "$build_dir/Build.PL") {
# see http://www.redhat.com/archives/rpm-list/2002-July/msg00110.html about RPM_BUILD_ROOT vs %{buildroot}
push @m, <<'EOF';
%build
%{__perl} Build.PL --installdirs=vendor --libdoc installvendorman3dir
./Build
%install
rm -rf $RPM_BUILD_ROOT
./Build install destdir=$RPM_BUILD_ROOT create_packlist=0
find $RPM_BUILD_ROOT -depth -type d -exec rmdir {} 2>/dev/null \;
%{_fixperms} $RPM_BUILD_ROOT/*
%check
./Build test
EOF
} elsif (-e "$build_dir/Makefile.PL") {
push @m, <<'EOF';
%build
%{__perl} Makefile.PL INSTALLDIRS=vendor
make %{?_smp_mflags}
%install
rm -rf $RPM_BUILD_ROOT
make pure_install DESTDIR=$RPM_BUILD_ROOT
find $RPM_BUILD_ROOT -type f -name .packlist -exec rm -f {} ';'
find $RPM_BUILD_ROOT -depth -type d -exec rmdir {} 2>/dev/null ';'
%{_fixperms} $RPM_BUILD_ROOT/*
%check
make test
EOF
} else {
$CPAN::Frontend->mydie("'$distribution' has neither a Build.PL nor a Makefile.PL\n");
}
push @m, "\n%clean\nrm -rf \$RPM_BUILD_ROOT\n";
my $vendorlib = @xs ? "vendorarch" : "vendorlib";
my $date = POSIX::strftime("%a %b %d %Y", gmtime);
my @doc = grep { -e "$build_dir/$_" } qw(README Changes);
my $exe_stanza = "\n";
if (my $exe_files = $d->_exe_files) {
if (@$exe_files) {
$exe_stanza = "%{_mandir}/man1/*.1*\n";
for my $e (@$exe_files) {
unless (CPAN->has_inst("File::Basename")) {
$CPAN::Frontend->mydie("File::Basename not installed, cannot continue");
}
my $basename = File::Basename::basename($e);
$exe_stanza .= "/usr/bin/$basename\n";
}
}
}
push @m, <<EOF;
%files
%defattr(-,root,root,-)
%doc @doc
%{perl_$vendorlib}/*
%{_mandir}/man3/*.3*
$exe_stanza
%changelog
* $date <specfile\@specfile.cpan.org> - $version-1
- autogenerated by CPAN::Plugin::Specfile()
EOF
my $ret = join "", @m;
$CPAN::Frontend->myprint($ret);
my $target_dir = $self->dir || $self->dir_default;
File::Path::mkpath($target_dir);
my $outfile = File::Spec->catfile($target_dir, "perl-$dist.spec");
open my $specout, ">", $outfile
or $CPAN::Frontend->mydie("Could not open >$outfile: $!");
print $specout $ret;
$CPAN::Frontend->myprint("Wrote $outfile");
$ret;
}
1;