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|
#!/usr/bin/env perl
use warnings 'FATAL' => 'all';
use strict;
package Common;
# ----------------------------------------
package CoreDist;
use File::Basename qw(basename);
use File::Find qw();
*findfile = *File::Find::find;
*findver = *main::findver;
sub pathmod
{
my($p) = @_;
for ($p){
s{^lib/}{};
s{[.]pm$}{};
s{/}{::}g;
}
return $p;
}
# scans a directory full of nicely separated dist. directories.
sub scan_distroot
{
my ($distroot) = @_;
opendir my $cpand, "$distroot" or die("failed to open $distroot");
my @dists = grep { !/^[.]/ && -d "$distroot/$_" } readdir $cpand;
closedir $cpand;
my @found;
for my $ddir (map { "$distroot/$_" } @dists){
for("$ddir/lib"){
$ddir = $_ if(-d $_);
}
my $finder = sub {
return unless(/[.]pm$/);
return if(m{/t/});
my $p = $_;
s{^\Q$ddir\E/}{};
my $m = pathmod($_);
my $v = findver($p, $m);
if($v){
push @found, [ $m, $v ];
}else{
#warn "failed to find version in $p\n";
}
};
findfile({ 'no_chdir' => 1, 'wanted' => $finder }, $ddir);
}
return @found;
}
sub findmods
{
my($srcdir) = @_;
return map { scan_distroot($_) } glob "$srcdir/{cpan,dist}";
}
# ----------------------------------------
package CoreLib;
use File::Find qw();
use File::stat;
*findfile = *File::Find::find;
*findver = *main::findver;
sub findmods
{
my($srcdir) = @_;
my $libdir = "$srcdir/lib/";
die "failed to find $libdir directory" unless(-d $libdir);
# Find only the module files that have not changed since perl
# was extracted. We don't want the files perl just recently
# installed into lib/. We processed those already.
my @modfiles;
my $finder = sub {
return unless(/[.]pm\z/);
return if m{\Q$libdir\E[^/]+/t/}; # ignore testing modules
push @modfiles, $_;
};
findfile({ 'no_chdir' => 1, 'wanted' => $finder }, $libdir);
# First we have to find what the oldest ctime actually is.
my $oldest = time;
@modfiles = map {
my $modfile = $_;
my $ctime = (stat $modfile)->ctime;
$oldest = $ctime if($ctime < $oldest);
[ $modfile, $ctime ]; # save ctime for later
} @modfiles;
# Then we filter out any file that was created more than a
# few seconds after that. Process the rest.
my @mods;
for my $modfile (@modfiles){
my($mod, $ctime) = @$modfile;
next if $ctime - $oldest > 5; # ignore newer files
my $path = $mod;
$mod =~ s{[.]pm\z}{};
$mod =~ s{\A$libdir}{};
$mod =~ s{/}{::}g;
my $ver = findver($path, $mod);
if($ver){
push @mods, [ $mod, $ver ];
}else{
warn "failed to find version in $path\n";
}
}
return @mods;
}
# ----------------------------------------
package main;
sub findver
{
my($path, $mod) = @_;
open(my $fh, '<', $path) or die("open $path: $!");
my $m = ($mod
? qr/(?:\$${mod}::VERSION|\$VERSION)/
: qr/\$VERSION/);
while(<$fh>){
next unless(/\s*$m\s*=\s*.+/);
chomp;
my $ver = do { no strict; eval };
return $ver unless($@);
die qq{$path:$. bad version string "$_"\n};
}
close($fh);
return undef;
}
sub delmods
{
my $coreonly = shift;
for(@_){
my($m) = split;
delete $coreonly->{$m};
}
return;
}
sub nocpan
{
my($mods, $mpath) = @_;
my %coreonly = map { @$_ } @$mods;
# Remove mods from the set which are also available from CPAN.
local $/ = qq{\n\n};
open my $if, '<', $mpath or die "open $mpath failed: $!";
while(<$if>){
my(undef, @dms) = split /\n/;
delmods(\%coreonly, @dms);
}
close $if;
return \%coreonly;
}
sub printmods
{
my($mods, $mpath) = @_;
my $coreonly = nocpan($mods, $mpath);
# Print a * in the third column for core-only modules.
for my $mv (@$mods){
my($m, $v) = @$mv;
printf "%s\n", join q{ }, $m, $v, ($coreonly->{$m} ? q{*} : ());
}
return;
}
sub main
{
die"Usage: $0 [path to perl source] [path to cpan.mods]\n" unless(@_ == 2);
my($perldir, $mpath) = @_;
die "$perldir is not a valid directory.\n" unless(-d $perldir);
die "$mpath is not a valid file.\n" unless(-f $mpath);
my @mods = (CoreDist::findmods($perldir), CoreLib::findmods($perldir));
## Embedded modules without any files...
push @mods, [ 'Config' => 1 ];
@mods = sort { $a->[0] cmp $b->[0] } @mods;
printmods(\@mods, $mpath);
return 0;
}
exit main(@ARGV);
|
