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Diffstat (limited to 'examples/redis-unstable/src/lzf_d.c')
| -rw-r--r-- | examples/redis-unstable/src/lzf_d.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/examples/redis-unstable/src/lzf_d.c b/examples/redis-unstable/src/lzf_d.c deleted file mode 100644 index ff32be8..0000000 --- a/examples/redis-unstable/src/lzf_d.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * Copyright (c) 2000-2010 Marc Alexander Lehmann <schmorp@schmorp.de> - * - * Redistribution and use in source and binary forms, with or without modifica- - * tion, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- - * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- - * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- - * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Alternatively, the contents of this file may be used under the terms of - * the GNU General Public License ("GPL") version 2 or any later version, - * in which case the provisions of the GPL are applicable instead of - * the above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the BSD license, indicate your decision - * by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file under - * either the BSD or the GPL. - */ - -#include "lzfP.h" - -#if AVOID_ERRNO -# define SET_ERRNO(n) -#else -# include <errno.h> -# define SET_ERRNO(n) errno = (n) -#endif - -#if USE_REP_MOVSB /* small win on amd, big loss on intel */ -#if (__i386 || __amd64) && __GNUC__ >= 3 -# define lzf_movsb(dst, src, len) \ - asm ("rep movsb" \ - : "=D" (dst), "=S" (src), "=c" (len) \ - : "0" (dst), "1" (src), "2" (len)); -#endif -#endif - -#if defined(__GNUC__) && __GNUC__ >= 7 -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wimplicit-fallthrough" -#endif -size_t -lzf_decompress (const void *const in_data, size_t in_len, - void *out_data, size_t out_len) -{ - u8 const *ip = (const u8 *)in_data; - u8 *op = (u8 *)out_data; - u8 const *const in_end = ip + in_len; - u8 *const out_end = op + out_len; - - while (ip < in_end) - { - unsigned int ctrl; - ctrl = *ip++; - - if (ctrl < (1 << 5)) /* literal run */ - { - ctrl++; - - if (op + ctrl > out_end) - { - SET_ERRNO (E2BIG); - return 0; - } - -#if CHECK_INPUT - if (ip + ctrl > in_end) - { - SET_ERRNO (EINVAL); - return 0; - } -#endif - -#ifdef lzf_movsb - lzf_movsb (op, ip, ctrl); -#else - switch (ctrl) - { - case 32: *op++ = *ip++; case 31: *op++ = *ip++; case 30: *op++ = *ip++; case 29: *op++ = *ip++; - case 28: *op++ = *ip++; case 27: *op++ = *ip++; case 26: *op++ = *ip++; case 25: *op++ = *ip++; - case 24: *op++ = *ip++; case 23: *op++ = *ip++; case 22: *op++ = *ip++; case 21: *op++ = *ip++; - case 20: *op++ = *ip++; case 19: *op++ = *ip++; case 18: *op++ = *ip++; case 17: *op++ = *ip++; - case 16: *op++ = *ip++; case 15: *op++ = *ip++; case 14: *op++ = *ip++; case 13: *op++ = *ip++; - case 12: *op++ = *ip++; case 11: *op++ = *ip++; case 10: *op++ = *ip++; case 9: *op++ = *ip++; - case 8: *op++ = *ip++; case 7: *op++ = *ip++; case 6: *op++ = *ip++; case 5: *op++ = *ip++; - case 4: *op++ = *ip++; case 3: *op++ = *ip++; case 2: *op++ = *ip++; case 1: *op++ = *ip++; - } -#endif - } - else /* back reference */ - { - unsigned int len = ctrl >> 5; - - u8 *ref = op - ((ctrl & 0x1f) << 8) - 1; - -#if CHECK_INPUT - if (ip >= in_end) - { - SET_ERRNO (EINVAL); - return 0; - } -#endif - if (len == 7) - { - len += *ip++; -#if CHECK_INPUT - if (ip >= in_end) - { - SET_ERRNO (EINVAL); - return 0; - } -#endif - } - - ref -= *ip++; - - if (op + len + 2 > out_end) - { - SET_ERRNO (E2BIG); - return 0; - } - - if (ref < (u8 *)out_data) - { - SET_ERRNO (EINVAL); - return 0; - } - -#ifdef lzf_movsb - len += 2; - lzf_movsb (op, ref, len); -#else - switch (len) - { - default: - len += 2; - - if (op >= ref + len) - { - /* disjunct areas */ - memcpy (op, ref, len); - op += len; - } - else - { - /* overlapping, use octte by octte copying */ - do - *op++ = *ref++; - while (--len); - } - - break; - - case 9: *op++ = *ref++; /* fall-thru */ - case 8: *op++ = *ref++; /* fall-thru */ - case 7: *op++ = *ref++; /* fall-thru */ - case 6: *op++ = *ref++; /* fall-thru */ - case 5: *op++ = *ref++; /* fall-thru */ - case 4: *op++ = *ref++; /* fall-thru */ - case 3: *op++ = *ref++; /* fall-thru */ - case 2: *op++ = *ref++; /* fall-thru */ - case 1: *op++ = *ref++; /* fall-thru */ - case 0: *op++ = *ref++; /* two octets more */ - *op++ = *ref++; /* fall-thru */ - } -#endif - } - } - - return op - (u8 *)out_data; -} -#if defined(__GNUC__) && __GNUC__ >= 5 -#pragma GCC diagnostic pop -#endif |