From: Peter Korsgaard <peter@korsgaard.com>
Date: Fri, 21 Nov 2014 19:46:36 +0100
Subject: [Buildroot] [PATCH] support/script/scancpan: generate hash file
In-Reply-To: <1416512127-9789-1-git-send-email-francois.perrad@gadz.org>
 (Francois Perrad's message of "Thu, 20 Nov 2014 20:35:27 +0100")
References: <1416512127-9789-1-git-send-email-francois.perrad@gadz.org>
Message-ID: <87k32opf1v.fsf@dell.be.48ers.dk>
List-Id: <buildroot.busybox.net>
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To: buildroot@busybox.net

>>>>> "Francois" == Francois Perrad <fperrad@gmail.com> writes:

 > retrieve md5&sha256 from metacpan.org, and store them in the hash file
 > for each package.

 > Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
 > ---
 >  support/scripts/scancpan | 26 ++++++++++++++++++++++++++
 >  1 file changed, 26 insertions(+)

 > diff --git a/support/scripts/scancpan b/support/scripts/scancpan
 > index a049e2c..e929718 100755
 > --- a/support/scripts/scancpan
 > +++ b/support/scripts/scancpan
 > @@ -481,6 +481,7 @@ use Pod::Usage;
 >  use File::Basename;
 >  use Module::CoreList;
 >  use HTTP::Tiny;
 > +use Safe;
 >  use MetaCPAN::API::Tiny;

 >  my ($help, $man, $quiet, $force, $recommend, $test, $host);
 > @@ -505,9 +506,22 @@ my %need_dlopen;        # name -> 1 if requires dynamic library
 >  my %deps_build;         # name -> list of host dependencies
 >  my %deps_runtime;       # name -> list of target dependencies
 >  my %license_files;      # name -> list of license files
 > +my %checksum;           # author -> list of checksum
 >  my $mcpan = MetaCPAN::API::Tiny->new();
 >  my $ua = HTTP::Tiny->new();

 > +sub get_checksum {
 > +    my ($url) = @_;
 > +    my($path) = $url =~ m|^[^:/?#]+://[^/?#]*([^?#]*)|;
 > +    my($basename, $dirname) = fileparse( $path );
 > +    unless ($checksum{$dirname}) {
 > +        my $response = $ua->get(qq{http://cpan.metacpan.org${dirname}CHECKSUMS});
 > +        $checksum{$dirname} = $response->{content};
 > +    }
 > +    my $chksum = Safe->new->reval($checksum{$dirname});
 > +    return $chksum->{$basename}, $basename;
 > +}
 > +
 >  sub get_manifest {
 >      my ($author, $distname, $version) = @_;
 >      my $url = qq{http://api.metacpan.org/source/${author}/${distname}-${version}/MANIFEST};
 > @@ -608,6 +622,7 @@ while (my ($distname, $dist) = each %dist) {
 >      my $dirname = q{package/} . $fsname;
 >      my $cfgname = $dirname . q{/Config.in};
 >      my $mkname = $dirname . q{/} . $fsname . q{.mk};
 > +    my $hashname = $dirname . q{/} . $fsname . q{.hash};
 >      my $brname = brname( $fsname );
 >      mkdir $dirname unless -d $dirname;
 >      if ($need_target{$distname} && ($force || !-f $cfgname)) {
 > @@ -675,6 +690,17 @@ while (my ($distname, $dist) = each %dist) {
 >          say {$fh} qq{\$(eval \$(host-perl-package))} if $need_host{$distname};
 >          close $fh;
 >      }
 > +    if ($force || !-f $hashname) {
 > +        my($checksum, $filename) = get_checksum($dist->{download_url});
 > +        my $md5 = $checksum->{md5};
 > +        my $sha256 = $checksum->{sha256};
 > +        say qq{write ${hashname}} unless $quiet;
 > +        open my $fh, q{>}, $hashname;
 > +        say {$fh} qq{# retrieved by scancpan from http://cpan.metacpan.org/};
 > +        say {$fh} qq{md5    ${md5}                                 ${filename}};
 > +        say {$fh} qq{sha256 ${sha256} ${filename}};

I don't know perl, but is there any reason for this odd indentation in
the .hash files? Normally we use:
type\thash  filename

(the *sum programs output 2 spaces between hash and filename)

-- 
Bye, Peter Korsgaard