Load XML-Feed-0.01 into trunk.

[catagits/XML-Feed.git] / inc / Module / Install / Metadata.pm

diff --git a/inc/Module/Install/Metadata.pm b/inc/Module/Install/Metadata.pm
new file mode 100644 (file)
index 0000000..b966264
--- /dev/null
+++ b/inc/Module/Install/Metadata.pm
@@ -0,0 +1,190 @@
+#line 1 "inc/Module/Install/Metadata.pm - /Library/Perl/5.8.1/Module/Install/Metadata.pm"
+# $File: //depot/cpan/Module-Install/lib/Module/Install/Metadata.pm $ $Author: autrijus $
+# $Revision: #32 $ $Change: 1885 $ $DateTime: 2004/03/11 05:55:27 $ vim: expandtab shiftwidth=4
+
+package Module::Install::Metadata;
+use Module::Install::Base; @ISA = qw(Module::Install::Base);
+
+$VERSION = '0.04';
+
+use strict 'vars';
+use vars qw($VERSION);
+
+sub Meta { shift }
+
+my @scalar_keys = qw(
+    name module_name version abstract author license
+    distribution_type sign perl_version
+);
+my @tuple_keys  = qw(build_requires requires recommends bundles);
+
+foreach my $key (@scalar_keys) {
+    *$key = sub {
+        my $self = shift;
+        return $self->{'values'}{$key} unless @_;
+        $self->{'values'}{$key} = shift;
+        return $self;
+    };
+}
+
+foreach my $key (@tuple_keys) {
+    *$key = sub {
+        my $self = shift;
+        return $self->{'values'}{$key} unless @_;
+        my @rv;
+        while (@_) {
+            my $module  = shift or last;
+            my $version = shift || 0;
+            if ($module eq 'perl') {
+                $version =~ s{^(\d+)\.(\d+)\.(\d+)}
+                             {$1 + $2/1_000 + $3/1_000_000}e;
+                $self->perl_version($version);
+                next;
+            }
+            my $rv = [$module, $version];
+            push @{$self->{'values'}{$key}}, $rv;
+            push @rv, $rv;
+        }
+        return @rv;
+    };
+}
+
+sub features {
+    my $self = shift;
+    while (my ($name, $mods) = splice(@_, 0, 2)) {
+        my $count = 0;
+        push @{$self->{'values'}{'features'}}, ($name => [
+            map { (++$count % 2 and ref($_) and ($count += $#$_)) ? @$_ : $_ } @$mods
+        ] );
+    }
+    return @{$self->{'values'}{'features'}};
+}
+
+sub no_index {
+    my $self = shift;
+    my $type = shift;
+    push @{$self->{'values'}{'no_index'}{$type}}, @_ if $type;
+    return $self->{'values'}{'no_index'};
+}
+
+sub _dump {
+    my $self = shift;
+    my $package = ref($self->_top);
+    my $version = $self->_top->VERSION;
+    my %values = %{$self->{'values'}};
+
+    delete $values{sign};
+    if (my $perl_version = delete $values{perl_version}) {
+        # Always canonical to three-dot version 
+        $perl_version =~ s{^(\d+)\.(\d\d\d)(\d*)}{join('.', $1, int($2), int($3))}e
+            if $perl_version >= 5.006;
+        $values{requires} = [
+            [perl => $perl_version],
+            @{$values{requires}||[]},
+        ];
+    }
+
+    warn "No license specified, setting license = 'unknown'\n"
+        unless $values{license};
+
+    $values{license} ||= 'unknown';
+    $values{distribution_type} ||= 'module';
+    $values{name} ||= do {
+        my $name = $values{module_name};
+        $name =~ s/::/-/g;
+        $name;
+    } if $values{module_name};
+
+    if ($values{name} =~ /::/) {
+        my $name = $values{name};
+        $name =~ s/::/-/g;
+        die "Error in name(): '$values{name}' should be '$name'!\n";
+    }
+
+    my $dump = '';
+    foreach my $key (@scalar_keys) {
+        $dump .= "$key: $values{$key}\n" if exists $values{$key};
+    }
+    foreach my $key (@tuple_keys) {
+        next unless exists $values{$key};
+        $dump .= "$key:\n";
+        foreach (@{$values{$key}}) {
+            $dump .= "  $_->[0]: $_->[1]\n";
+        }
+    }
+
+    if (my $no_index = $values{no_index}) {
+        push @{$no_index->{'directory'}}, 'inc';
+        require YAML;
+        local $YAML::UseHeader = 0;
+        $dump .= YAML::Dump({ no_index => $no_index});
+    }
+    else {
+        $dump .= << "META";
+no_index:
+  directory:
+    - inc
+META
+    }
+    
+    $dump .= "generated_by: $package version $version\n";
+    return $dump;
+}
+
+sub read {
+    my $self = shift;
+    $self->include_deps( 'YAML', 0 );
+    require YAML;
+    my $data = YAML::LoadFile( 'META.yml' );
+    # Call methods explicitly in case user has already set some values.
+    while ( my ($key, $value) = each %$data ) {
+        next unless $self->can( $key );
+        if (ref $value eq 'HASH') {
+            while (my ($module, $version) = each %$value) {
+                $self->$key( $module => $version );
+            }
+        }
+        else {
+            $self->$key( $value );
+        }
+    }
+    return $self;
+}
+
+sub write {
+    my $self = shift;
+    return $self unless $self->is_admin;
+
+    META_NOT_OURS: {
+        local *FH;
+        if (open FH, "META.yml") {
+            while (<FH>) {
+                last META_NOT_OURS if /^generated_by: Module::Install\b/;
+            }
+            return $self if -s FH;
+        }
+    }
+
+    warn "Writing META.yml\n";
+    open META, "> META.yml" or warn "Cannot write to META.yml: $!";
+    print META $self->_dump;
+    close META;
+    return $self;
+}
+
+sub version_from {
+    my ($self, $version_from) = @_;
+    require ExtUtils::MM_Unix;
+    $self->version(ExtUtils::MM_Unix->parse_version($version_from));
+}
+
+sub abstract_from {
+    my ($self, $abstract_from) = @_;
+    require ExtUtils::MM_Unix;
+    $self->abstract(
+        bless( { DISTNAME => $self->name }, 'ExtUtils::MM_Unix')
+            ->parse_abstract($abstract_from)
+    );
+}
+
+1;