Move seamless .Z support into unpack_gz_stream
unpack_gz_stream 566 643 +77
unpack_gunzip 123 12 -111
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c
index f1c9a79..66152a8 100644
--- a/archival/libarchive/decompress_gunzip.c
+++ b/archival/libarchive/decompress_gunzip.c
@@ -1188,8 +1188,26 @@
IF_DESKTOP(long long) int total, n;
DECLARE_STATE;
+#if !ENABLE_FEATURE_SEAMLESS_Z
if (check_signature16(aux, src_fd, GZIP_MAGIC))
return -1;
+#else
+ if (aux && aux->check_signature) {
+ uint16_t magic2;
+
+ if (full_read(STDIN_FILENO, &magic2, 2) != 2) {
+ bad_magic:
+ bb_error_msg("invalid magic");
+ return -1;
+ }
+ if (magic2 == COMPRESS_MAGIC) {
+ aux->check_signature = 0;
+ return unpack_Z_stream(aux, src_fd, dst_fd);
+ }
+ if (magic2 != GZIP_MAGIC)
+ goto bad_magic;
+ }
+#endif
total = 0;