xnu-2782.1.97.tar.gz

[apple/xnu.git] / bsd / dev / random / YarrowCoreLib / src / comp.c

diff --git a/bsd/dev/random/YarrowCoreLib/src/comp.c b/bsd/dev/random/YarrowCoreLib/src/comp.c
deleted file mode 100644 (file)
index c227840..0000000
--- a/bsd/dev/random/YarrowCoreLib/src/comp.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/*
- * Copyright (c) 1999, 2000-2001 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- * 
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-
-/*
-       File:           comp.c
-
-       Contains:       NULL compression. Kernel version of Yarrow assumes
-                               incoming seed data is truly random.
-*/
-#include "dev/random/YarrowCoreLib/include/WindowsTypesForMac.h"
-#include "comp.h"
-
-#ifdef YARROW_KERNEL
-
-/* null compression */
-comp_error_status comp_init(__unused COMP_CTX* ctx)
-{
-       return COMP_SUCCESS;
-}
-
-
-comp_error_status comp_add_data( __unused COMP_CTX* ctx, 
-                                                                __unused Bytef* inp, 
-                                                                __unused uInt inplen )
-{
-       return COMP_SUCCESS;
-}
-
-comp_error_status comp_get_ratio( __unused COMP_CTX* ctx,float* out )
-{
-       *out = 1.0;
-       return COMP_SUCCESS;
-}
-
-comp_error_status comp_end( __unused COMP_CTX* ctx )
-{
-       return COMP_SUCCESS;
-}
-
-#else
-
-/* original Yarrow compression, must be linked with zlib */
-
-#if            defined(macintosh) || defined(__APPLE__)
-#include "WindowsTypesForMac.h"
-#include "yarrowUtils.h"
-#include <string.h>
-#include <stdlib.h>
-#else
-#include <windows.h>
-#endif
-#include <math.h>
-#include "comp.h"
-
-/* Check that the pointer is not NULL */
-#define PCHECK(ptr)  if(ptr==NULL) {return COMP_ERR_NULL_POINTER;}
-#define MMPCHECK(mmptr) if(mmptr==MM_NULL) {return COMP_ERR_NULL_POINTER;}
-/* Check that the important parts of the context are ok */
-#define CTXCHECK(ctx) \
-PCHECK(ctx)                            \
-MMPCHECK(ctx->buf)
-
-/* Might want to vary these by context */
-#define BUFSIZE  16384 /* 16K */
-#define OUTBUFSIZE 16800 /* = inbufsize*1.01 + 12 (See zlib docs) */
-#define SHIFTSIZE 4096 /* BUFSIZE/4 */
-
-#define _MIN(a,b) (((a)<(b))?(a):(b))
-
-
-/* Initialize these routines */
-comp_error_status comp_init(COMP_CTX* ctx)
-{
-       ctx->buf = mmMalloc(BUFSIZE);
-       if(ctx->buf == MM_NULL) {goto cleanup_comp_init;}
-       ctx->spaceused = 0;
-
-       return COMP_SUCCESS;
-
-cleanup_comp_init:
-       mmFree(ctx->buf);
-
-       return COMP_ERR_LOW_MEMORY;
-}
-
-
-comp_error_status comp_add_data(COMP_CTX* ctx,Bytef* inp,uInt inplen)
-{
-       uInt shifts;
-       uInt blocksize;
-       BYTE* buf;
-
-       CTXCHECK(ctx);
-       PCHECK(inp);
-
-       buf = (BYTE*)mmGetPtr(ctx->buf);
-
-       if(inplen+SHIFTSIZE>BUFSIZE)
-       {
-               blocksize = _MIN(inplen,BUFSIZE);
-               memmove(buf,inp,blocksize);
-               ctx->spaceused = blocksize;
-       }
-       else
-       {
-               if(inplen+ctx->spaceused>BUFSIZE) 
-               {
-                       shifts = (uInt)ceil((inplen+ctx->spaceused-BUFSIZE)/(float)SHIFTSIZE);
-                       blocksize = _MIN(shifts*SHIFTSIZE,ctx->spaceused);
-                       memmove(buf,buf+blocksize,BUFSIZE-blocksize);
-                       ctx->spaceused = ctx->spaceused - blocksize;
-               }
-               memmove(buf+ctx->spaceused,inp,inplen);
-               ctx->spaceused += inplen;
-       }
-
-       return COMP_SUCCESS;
-}
-
-comp_error_status comp_get_ratio(COMP_CTX* ctx,float* out)
-{
-       Bytef *inbuf,*outbuf;
-       uLong insize,outsize;
-       int resp;
-
-       *out = 0;
-
-       CTXCHECK(ctx);
-       PCHECK(out);
-
-       if(ctx->spaceused == 0) {return COMP_SUCCESS;}
-
-       inbuf = (Bytef*)mmGetPtr(ctx->buf);
-       outbuf = (Bytef*)malloc(OUTBUFSIZE);
-       if(outbuf==NULL) {return COMP_ERR_LOW_MEMORY;}
-
-       insize = ctx->spaceused;
-       outsize = OUTBUFSIZE;
-
-       resp = compress(outbuf,&outsize,inbuf,insize);
-       if(resp==Z_MEM_ERROR) {return COMP_ERR_LOW_MEMORY;}
-       if(resp==Z_BUF_ERROR) {return COMP_ERR_LIB;}
-
-       *out = (float)outsize/(float)insize;
-
-       /* Thrash the memory and free it */
-       trashMemory(outbuf, OUTBUFSIZE);
-       free(outbuf);
-
-       return COMP_SUCCESS;
-}
-
-comp_error_status comp_end(COMP_CTX* ctx)
-{
-       if(ctx == NULL) {return COMP_SUCCESS;} /* Since nothing is left undone */
-
-       mmFree(ctx->buf);
-       ctx->buf = MM_NULL;
-
-       return COMP_SUCCESS;
-}
-
-#endif /* YARROW_KERNEL */
-