1 files changed, 45 insertions, 0 deletions
diff --git a/debian/collect_copyright.pl b/debian/collect_copyright.pl
new file mode 100755
index 0000000..5556d87
--- /dev/null
+++ b/debian/collect_copyright.pl
@@ -0,0 +1,45 @@
+#!/usr/bin/perl
+
+use v5.36;
+
+sub slurp($file){
+    open(my $fh, "<", $file) or die;
+    local $/;
+    $/ = "\n" if(wantarray);
+    <$fh>
+}
+
+my $root = $ENV{DPKG_ROOT} // "";
+
+my %pkg;
+my $pkg;
+for(slurp("$root/var/lib/dpkg/status")){
+    $pkg = $1 if(/^Package:\s*([^\s]*)/);
+    if(/^Source:\s*([^\s(]*)/){
+        my $src = $1;
+        next if($src eq $pkg);
+        $pkg{$src} //= [];
+        push $pkg{$src}->@*, $pkg;
+    }
+}
+
+my @deps;
+for(@ARGV){
+    push @deps, map{s/^\s*//; s/\s*$//r}
+        map{s/.*?.?=//; split(/, */)}
+        grep{/^misc:Static-Built-Using.?=/}
+        slurp($_);
+}
+
+DEP: for my $namev(@deps){
+    my $name = $namev =~ s/\s*\(.*//r;
+    for($name, $pkg{$name}->@*){
+        if(-f "$root/usr/share/doc/$_/copyright"){
+            print("Package: $namev\n");
+            print(slurp("/usr/share/doc/$_/copyright"));
+            print("\n");
+            next DEP;
+        }
+    }
+    die;
+}