find/misc.c

   1 /*-
   2  * Copyright (c) 1990, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Cimarron D. Taylor of the University of California, Berkeley.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)misc.c      8.2 (Berkeley) 4/1/94";
  40 #else
  41 #endif
  42 #endif /* not lint */
  43
  44 #include <sys/cdefs.h>
  45 __FBSDID("$FreeBSD: src/usr.bin/find/misc.c,v 1.8 2005/04/02 07:44:12 tjr Exp $");
  46
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49
  50 #include <err.h>
  51 #include <errno.h>
  52 #include <fts.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56
  57 #include "find.h"
  58
  59 /*
  60  * brace_subst --
  61  *      Replace occurrences of {} in s1 with s2 and return the result string.
  62  */
  63 void
  64 brace_subst(char *orig, char **store, char *path, int len)
  65 {
  66         int plen;
  67         char ch, *p;
  68
  69         plen = strlen(path);
  70         for (p = *store; (ch = *orig) != '\0'; ++orig)
  71                 if (ch == '{' && orig[1] == '}') {
  72                         while ((p - *store) + plen > len)
  73                                 if (!(*store = realloc(*store, len *= 2)))
  74                                         err(1, NULL);
  75                         memmove(p, path, plen);
  76                         p += plen;
  77                         ++orig;
  78                 } else
  79                         *p++ = ch;
  80         *p = '\0';
  81 }
  82
  83 /*
  84  * queryuser --
  85  *      print a message to standard error and then read input from standard
  86  *      input. If the input is an affirmative response (according to the
  87  *      current locale) then 1 is returned.
  88  */
  89 int
  90 queryuser(char *argv[])
  91 {
  92         char *p, resp[256];
  93
  94         (void)fprintf(stderr, "\"%s", *argv);
  95         while (*++argv)
  96                 (void)fprintf(stderr, " %s", *argv);
  97         (void)fprintf(stderr, "\"? ");
  98         (void)fflush(stderr);
  99
 100         if (fgets(resp, sizeof(resp), stdin) == NULL)
 101                 *resp = '\0';
 102         if ((p = strchr(resp, '\n')) != NULL)
 103                 *p = '\0';
 104         else {
 105                 (void)fprintf(stderr, "\n");
 106                 (void)fflush(stderr);
 107         }
 108 #ifdef __APPLE__
 109         return (resp[0] == 'y');
 110 #else
 111         return (rpmatch(resp) == 1);
 112 #endif
 113 }