Add support for "tp" format. tp was the standard system

archiver for Fourth Edition through Sixth Edition Unix; it was
replaced by tar in Seventh Edition.  (First Edition through
Third Edition used "tap.")

Unfortunately, tp was not so very standard; there were a
few different variants.  The code here attempts to support
what I believe were the most common variants.

tp support is not yet enabled by archive_read_support_format_all(),
as I'm not yet entirely comfortable with the detection
heuristics.  People interested in experimenting can
add archive_read_support_format_tp() just after any calls
to archive_read_support_format_all() in bsdtar to see how
well this works.

TODO: tp format is roughly similar in structure to dump/restore
   archive formats used by many systems.  It should be possible
   to generalize this code to handle many dump/restore variants.
   Format detection heuristics are going to be rough, though.

Thanks to: Warren Toomey, whose very basic tp extraction programs
   and documentation made this possible.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libarchive/archive.h.in b/lib/libarchive/archive.h.in
index 666917c..a7427b2 100644
--- a/lib/libarchive/archive.h.in
+++ b/lib/libarchive/archive.h.in
@@ -180,6 +180,7 @@ int		 archive_read_support_format_cpio(struct archive *);
 int		 archive_read_support_format_gnutar(struct archive *);
 int		 archive_read_support_format_iso9660(struct archive *);
 int		 archive_read_support_format_tar(struct archive *);
+int		 archive_read_support_format_tp(struct archive *);
 int		 archive_read_support_format_zip(struct archive *);