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authorDenys Vlasenko <vda.linux@googlemail.com>2010-05-30 01:47:40 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2010-05-30 01:47:40 (GMT)
commitfb6c76cb6eaade5693b7e99c33846c902689f1db (patch)
treeb035914ab52c62896d840a2a8d9a54000e676b7d
parentd93f19e443a94a2c107a43a7c0d5415b1c8163da (diff)
downloadbusybox-fb6c76cb6eaade5693b7e99c33846c902689f1db.tar.gz
busybox-fb6c76cb6eaade5693b7e99c33846c902689f1db.tar.bz2
forgotten "git add"...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--archival/libunarchive/decompress_unxz.c116
1 files changed, 116 insertions, 0 deletions
diff --git a/archival/libunarchive/decompress_unxz.c b/archival/libunarchive/decompress_unxz.c
new file mode 100644
index 0000000..0ae7891
--- /dev/null
+++ b/archival/libunarchive/decompress_unxz.c
@@ -0,0 +1,116 @@
+/*
+ * This file uses XZ Embedded library code which is written
+ * by Lasse Collin <lasse.collin@tukaani.org>
+ * and Igor Pavlov <http://7-zip.org/>
+ *
+ * See README file in unxzbz/ directory for more information.
+ *
+ * This file is:
+ * Copyright (C) 2010 Denys Vlasenko <vda.linux@googlemail.com>
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
+#include "libbb.h"
+#include "unarchive.h"
+
+//#define XZ_DEBUG_MSG(...) bb_error_msg(__VA_ARGS)
+#define XZ_REALLOC_DICT_BUF(ptr, size) xrealloc(ptr, size)
+#define XZ_FUNC FAST_FUNC
+#define XZ_EXTERN static
+
+#define xz_crc32_init(table) crc32_filltable(table, /*endian:*/ 0)
+static uint32_t xz_crc32(uint32_t *crc32_table,
+ const uint8_t *buf, size_t size, uint32_t crc)
+{
+ crc = ~crc;
+
+ while (size != 0) {
+ crc = crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8);
+ --size;
+ }
+
+ return ~crc;
+}
+#define xz_crc32 xz_crc32
+
+#define get_unaligned_le32(buf) ({ uint32_t v; move_from_unaligned32(v, buf); SWAP_LE32(v); })
+#define get_unaligned_be32(buf) ({ uint32_t v; move_from_unaligned32(v, buf); SWAP_BE32(v); })
+#define put_unaligned_le32(val, buf) move_to_unaligned16(buf, SWAP_LE32(val))
+#define put_unaligned_be32(val, buf) move_to_unaligned16(buf, SWAP_BE32(val))
+
+#include "unxz/xz.h"
+#include "unxz/xz_config.h"
+
+#include "unxz/xz_dec_bcj.c"
+#include "unxz/xz_dec_lzma2.c"
+#include "unxz/xz_dec_stream.c"
+#include "unxz/xz_lzma2.h"
+#include "unxz/xz_private.h"
+#include "unxz/xz_stream.h"
+
+IF_DESKTOP(long long) int FAST_FUNC
+unpack_xz_stream_stdin(void)
+{
+ struct xz_buf iobuf;
+ struct xz_dec *state;
+ unsigned char *membuf;
+ IF_DESKTOP(long long) int total = 0;
+ enum {
+ IN_SIZE = 4 * 1024,
+ OUT_SIZE = 60 * 1024,
+ };
+
+ membuf = xmalloc(IN_SIZE + OUT_SIZE);
+ memset(&iobuf, 0, sizeof(iobuf));
+ iobuf.in = membuf;
+ iobuf.out = membuf + IN_SIZE;
+ iobuf.out_size = OUT_SIZE;
+
+ state = xz_dec_init(64*1024); /* initial dict of 64k */
+ xz_crc32_init(state->crc32_table);
+
+ while (1) {
+ enum xz_ret r;
+ int insz, rd, outpos;
+
+ iobuf.in_size -= iobuf.in_pos;
+ insz = iobuf.in_size;
+ if (insz)
+ memmove(membuf, membuf + iobuf.in_pos, insz);
+ iobuf.in_pos = 0;
+ rd = IN_SIZE - insz;
+ if (rd) {
+ rd = safe_read(STDIN_FILENO, membuf + insz, rd);
+ if (rd < 0) {
+ bb_error_msg("read error");
+ total = -1;
+ break;
+ }
+ iobuf.in_size = insz + rd;
+ }
+// bb_error_msg(">in pos:%d size:%d out pos:%d size:%d",
+// iobuf.in_pos, iobuf.in_size, iobuf.out_pos, iobuf.out_size);
+ r = xz_dec_run(state, &iobuf);
+// bb_error_msg("<in pos:%d size:%d out pos:%d size:%d r:%d",
+// iobuf.in_pos, iobuf.in_size, iobuf.out_pos, iobuf.out_size, r);
+ outpos = iobuf.out_pos;
+ if (outpos) {
+ xwrite(STDOUT_FILENO, iobuf.out, outpos);
+ IF_DESKTOP(total += outpos;)
+ }
+ if (r == XZ_STREAM_END
+ || (r == XZ_BUF_ERROR && insz == 0 && outpos == 0)
+ ) {
+ break;
+ }
+ if (r != XZ_OK) {
+ bb_error_msg("corrupted data");
+ total = -1;
+ break;
+ }
+ iobuf.out_pos = 0;
+ }
+ xz_dec_end(state);
+ free(membuf);
+
+ return total;
+}