1 files changed, 107 insertions, 0 deletions
diff --git a/store-bzip2.c b/store-bzip2.c
new file mode 100644
index 000000000..879145e3c
--- /dev/null
+++ b/store-bzip2.c
@@ -0,0 +1,107 @@
+/* Gzip store backend.
+
+   Copyright (C) 1995,96,97,99,2000,01, 02 Free Software Foundation, Inc.
+   Written by Ludovic Courtes <ludo@type-z.org>
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <sys/mman.h>
+#include <bzlib.h>
+#include <error.h>
+
+#include <hurd.h>
+#include <hurd/store.h>
+
+#include "zipstores.h"
+
+#ifndef DEBUG_ZIP
+# undef DEBUG
+#endif
+#include "debug.h"
+
+
+
+/* Convert a bzlib error into a libc error.  */
+static inline error_t
+bzip2_error (bz_stream *stream, int zerr)
+{
+  error_t err;
+
+  assert (zerr != BZ_OUTBUFF_FULL);
+
+  switch (zerr)
+  {
+    case BZ_OK:
+    case BZ_RUN_OK:
+    case BZ_FLUSH_OK:
+    case BZ_FINISH_OK:
+      err = 0;
+      break;
+    case BZ_MEM_ERROR:
+      err = ENOMEM;
+      break;
+    case BZ_CONFIG_ERROR:
+      err = EFTYPE;
+      break;
+    case BZ_DATA_ERROR:
+    case BZ_DATA_ERROR_MAGIC:
+    case BZ_IO_ERROR:
+      err = EIO;
+      break;
+    case BZ_PARAM_ERROR:
+      err = EINVAL;
+      break;
+    case BZ_SEQUENCE_ERROR:
+      err = EINVAL;
+      break;
+    default:
+      err = EAGAIN;	/* Shoudn't happen */
+  }
+
+  return err;
+}
+
+/* The following macros are defined to be then used by the zip store generic
+   code included below.  */
+#define ZIP_TYPE  bzip2
+
+#define ZIP_DECOMPRESS(Stream)       BZ2_bzDecompress ((Stream))
+
+#define ZIP_DECOMPRESS_INIT(Stream)  BZ2_bzDecompressInit ((Stream), 1, 0)
+
+#define ZIP_DECOMPRESS_END(Stream)   BZ2_bzDecompressEnd ((Stream));
+
+#define ZIP_DECOMPRESS_RESET(Stream) \
+   ZIP_DECOMPRESS_END ((Stream)), ZIP_DECOMPRESS_INIT ((Stream))
+
+#define ZIP_COMPRESS(Stream)         BZ2_bzCompress ((Stream), BZ_RUN)
+
+#define ZIP_COMPRESS_FINISH(Stream)  BZ2_bzCompress ((Stream), BZ_FINISH)
+
+#define ZIP_COMPRESS_INIT(Stream)    BZ2_bzCompressInit ((Stream), 4, 1, 0)
+
+#define ZIP_COMPRESS_END(Stream)     BZ2_bzCompressEnd ((Stream))
+
+/* Constants */
+#define ZIP_STREAM                   bz_stream
+#define ZIP_STREAM_END               BZ_STREAM_END
+
+#include "zipstores.c"