file_cmds-82.tar.gz

[apple/file_cmds.git] / file / compress.c

diff --git a/file/compress.c b/file/compress.c
deleted file mode 100644 (file)
index 4088f2d..0000000
--- a/file/compress.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
- * Reserved.  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 1.1 (the "License").  You may not use this file
- * except in compliance with the License.  Please obtain a copy of the
- * License at http://www.apple.com/publicsource 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 OR NON- INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-/*     $OpenBSD: compress.c,v 1.3 1997/02/09 23:58:19 millert Exp $    */
-
-/*
- * compress routines:
- *     zmagic() - returns 0 if not recognized, uncompresses and prints
- *                information if recognized
- *     uncompress(method, old, n, newch) - uncompress old into new, 
- *                                         using method, return sizeof new
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/wait.h>
-
-#include "file.h"
-
-static struct {
-   char *magic;
-   int   maglen;
-   char *argv[3];
-   int  silent;
-} compr[] = {
-    { "\037\235", 2, { "uncompress", "-c", NULL }, 0 },        /* compressed */
-    { "\037\213", 2, { "gzip", "-cdq", NULL }, 1 },    /* gzipped */
-    { "\037\236", 2, { "gzip", "-cdq", NULL }, 1 },    /* frozen */
-    { "\037\240", 2, { "gzip", "-cdq", NULL }, 1 },    /* SCO LZH */
-    /* the standard pack utilities do not accept standard input */
-    { "\037\036", 2, { "gzip", "-cdq", NULL }, 0 },    /* packed */
-};
-
-static int ncompr = sizeof(compr) / sizeof(compr[0]);
-
-
-static int uncompress __P((int, const unsigned char *, unsigned char **, int));
-
-int
-zmagic(buf, nbytes)
-unsigned char *buf;
-int nbytes;
-{
-       unsigned char *newbuf;
-       int newsize;
-       int i;
-
-       for (i = 0; i < ncompr; i++) {
-               if (nbytes < compr[i].maglen)
-                       continue;
-               if (memcmp(buf, compr[i].magic,  compr[i].maglen) == 0)
-                       break;
-       }
-
-       if (i == ncompr)
-               return 0;
-
-       if ((newsize = uncompress(i, buf, &newbuf, nbytes)) != 0) {
-               tryit(newbuf, newsize, 1);
-               free(newbuf);
-               printf(" (");
-               tryit(buf, nbytes, 0);
-               printf(")");
-       }
-       return 1;
-}
-
-
-static int
-uncompress(method, old, newch, n)
-int method;
-const unsigned char *old;
-unsigned char **newch;
-int n;
-{
-       int fdin[2], fdout[2];
-
-       if (pipe(fdin) == -1 || pipe(fdout) == -1) {
-               error("cannot create pipe (%s).\n", strerror(errno));   
-               /*NOTREACHED*/
-       }
-       switch (fork()) {
-       case 0: /* child */
-               (void) close(0);
-               (void) dup(fdin[0]);
-               (void) close(fdin[0]);
-               (void) close(fdin[1]);
-
-               (void) close(1);
-               (void) dup(fdout[1]);
-               (void) close(fdout[0]);
-               (void) close(fdout[1]);
-               if (compr[method].silent)
-                   (void) close(2);
-
-               execvp(compr[method].argv[0], compr[method].argv);
-               error("could not execute `%s' (%s).\n", 
-                     compr[method].argv[0], strerror(errno));
-               /*NOTREACHED*/
-       case -1:
-               error("could not fork (%s).\n", strerror(errno));
-               /*NOTREACHED*/
-
-       default: /* parent */
-               (void) close(fdin[0]);
-               (void) close(fdout[1]);
-               if (write(fdin[1], old, n) != n) {
-                       error("write failed (%s).\n", strerror(errno));
-                       /*NOTREACHED*/
-               }
-               (void) close(fdin[1]);
-               if ((*newch = (unsigned char *) malloc(n)) == NULL) {
-                       error("out of memory.\n");
-                       /*NOTREACHED*/
-               }
-               if ((n = read(fdout[0], *newch, n)) <= 0) {
-                       free(*newch);
-                       error("read failed (%s).\n", strerror(errno));
-                       /*NOTREACHED*/
-               }
-               (void) close(fdout[0]);
-               (void) wait(NULL);
-               return n;
-       }
-}