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