Copyright consolidation script

With Richard Levitte.

Reviewed-by: Richard Levitte <levitte@openssl.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/util/copyright.pl b/util/copyright.pl
new file mode 100644
index 0000000000..bdaa9c1052
--- /dev/null
+++ b/util/copyright.pl
@@ -0,0 +1,72 @@
+#! /usr/bin/env perl
+# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+# Add new copyright and delete old ones.  Used as
+#   find . -name '*.[ch]' -type f -exec perl -i.bak util/copyright.pl '{}' ';'
+# This does not do everything that's needed for the consolidation.
+
+use strict;
+use warnings;
+
+# Read a multi-line comments.  If it matches a "fingerprint" of a legacy
+# copyright block, then just delete it.
+sub check_comment()
+{
+    my @lines = ( @_ );
+    my $skipit = 0;
+
+    if ($lines[$#lines] !~ m@\*/@) {
+        while ( <> ) {
+            push @lines, $_;
+            last if m@\*/@;
+            $skipit = 1 if /Copyright remains Eric Young's/i;
+            $skipit = 1 if /Copyright.*The OpenSSL Project/i;
+            $skipit = 1 if /Written by.*for the OpenSSL Project/i;
+        }
+    }
+
+    print @lines unless $skipit;
+}
+
+# Look for leading copyright blocks and process (print/swallow) them.
+while ( <> ) {
+    if ($. == 1) {
+        my $DATE;
+        # Look for special copyright EAY line at line one.
+        if ( /Copyright.*(199.)-.*Eric Young/ ) {
+            $DATE = $1;
+        } else {
+            # Nope, use when it first existed in git.
+            $DATE=`git log '--pretty=format:%cI' $ARGV | tail -1`;
+            $DATE =~ s/-.*//;
+        }
+        my $YEAR = $DATE ? $DATE : 1995;
+        my $SPAN = $YEAR == 2016 ? "2016" : "${YEAR}-2016";
+        print <<EOF;
+/*
+ * Copyright ${SPAN} The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+EOF
+    }
+    next if m@^$@;
+    last if not m@/\*@;
+    &check_comment($_);
+}
+
+if (defined($_)) {
+    print unless m@\*/@;
+
+    # Print rest of file.
+    print while ( <> );
+}