BSD 4_3_Net_2 release

[unix-history] / usr / src / usr.bin / find / misc.c

/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Cimarron D. Taylor of the University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 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 OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)misc.c      5.8 (Berkeley) 5/24/91";
#endif /* not lint */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "find.h"

/*
* brace_subst --
*      Replace occurrences of {} in s1 with s2 and return the result string.
*/
void
brace_subst(orig, store, path, len)
       char *orig, **store, *path;
       int len;
{
       register int plen;
       register char ch, *p;

       plen = strlen(path);
       for (p = *store; ch = *orig; ++orig)
               if (ch == '{' && orig[1] == '}') {
                       while ((p - *store) + plen > len)
                               if (!(*store = realloc(*store, len *= 2)))
                                       err("%s", strerror(errno));
                       bcopy(path, p, plen);
                       p += plen;
                       ++orig;
               } else
                       *p++ = ch;
       *p = '\0';
}

/*
* queryuser --
*      print a message to standard error and then read input from standard
*      input. If the input is 'y' then 1 is returned.
*/
queryuser(argv)
       register char **argv;
{
       int ch, first, nl;

       (void)fprintf(stderr, "\"%s", *argv);
       while (*++argv)
               (void)fprintf(stderr, " %s", *argv);
       (void)fprintf(stderr, "\"? ");
       (void)fflush(stderr);

       first = ch = getchar();
       for (nl = 0;;) {
               if (ch == '\n') {
                       nl = 1;
                       break;
               }
               if (ch == EOF)
                       break;
               ch = getchar();
       }

       if (!nl) {
               (void)fprintf(stderr, "\n");
               (void)fflush(stderr);
       }
       return(first == 'y');
}

/*
* emalloc --
*      malloc with error checking.
*/
void *
emalloc(len)
       u_int len;
{
       void *p;

       if (p = malloc(len))
               return(p);
       err("%s", strerror(errno));
       /* NOTREACHED */
}

#if __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

void
#if __STDC__
err(const char *fmt, ...)
#else
err(fmt, va_alist)
       char *fmt;
       va_dcl
#endif
{
       va_list ap;
#if __STDC__
       va_start(ap, fmt);
#else
       va_start(ap);
#endif
       (void)fprintf(stderr, "find: ");
       (void)vfprintf(stderr, fmt, ap);
       va_end(ap);
       (void)fprintf(stderr, "\n");
       exit(1);
       /* NOTREACHED */
}