1 /* $NetBSD: misc.c,v 1.12 2003/08/07 11:13:42 agc Exp $ */ 2 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/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "from: @(#)misc.c 8.2 (Berkeley) 4/1/94"; 39 #else 40 __RCSID("$NetBSD: misc.c,v 1.12 2003/08/07 11:13:42 agc Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 47 #include <err.h> 48 #include <errno.h> 49 #include <fts.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <unistd.h> 54 55 #include "find.h" 56 57 /* 58 * brace_subst -- 59 * Replace occurrences of {} in orig with path, and place it in a malloced 60 * area of memory set in store. 61 */ 62 void 63 brace_subst(orig, store, path, len) 64 char *orig, **store, *path; 65 int *len; 66 { 67 int nlen, plen, rest; 68 char ch, *p, *ostore; 69 70 plen = strlen(path); 71 for (p = *store; (ch = *orig) != '\0'; ++orig) 72 if (ch == '{' && orig[1] == '}') { 73 /* Length of string after the {}. */ 74 rest = strlen(&orig[2]); 75 76 nlen = *len; 77 while ((p - *store) + plen + rest + 1 > nlen) 78 nlen *= 2; 79 80 if (nlen > *len) { 81 ostore = *store; 82 if ((*store = realloc(ostore, nlen)) == NULL) 83 err(1, "realloc"); 84 *len = nlen; 85 p += *store - ostore; /* Relocate. */ 86 } 87 memmove(p, path, plen); 88 p += plen; 89 ++orig; 90 } else 91 *p++ = ch; 92 *p = '\0'; 93 } 94 95 /* 96 * queryuser -- 97 * print a message to standard error and then read input from standard 98 * input. If the input is 'y' then 1 is returned. 99 */ 100 int 101 queryuser(argv) 102 char **argv; 103 { 104 int ch, first, nl; 105 106 (void)fprintf(stderr, "\"%s", *argv); 107 while (*++argv) 108 (void)fprintf(stderr, " %s", *argv); 109 (void)fprintf(stderr, "\"? "); 110 (void)fflush(stderr); 111 112 first = ch = getchar(); 113 for (nl = 0;;) { 114 if (ch == '\n') { 115 nl = 1; 116 break; 117 } 118 if (ch == EOF) 119 break; 120 ch = getchar(); 121 } 122 123 if (!nl) { 124 (void)fprintf(stderr, "\n"); 125 (void)fflush(stderr); 126 } 127 return (first == 'y'); 128 } 129 130 /* 131 * emalloc -- 132 * malloc with error checking. 133 */ 134 void * 135 emalloc(len) 136 u_int len; 137 { 138 void *p; 139 140 if ((p = malloc(len)) == NULL) 141 err(1, "malloc"); 142 return (p); 143 } 144 145 /* 146 * show_path -- 147 * called on SIGINFO 148 */ 149 /* ARGSUSED */ 150 void 151 show_path(sig) 152 int sig; 153 { 154 extern FTSENT *g_entry; 155 int errno_bak; 156 157 if (g_entry == NULL) { 158 /* 159 * not initialized yet. 160 * assumption: pointer assignment is atomic. 161 */ 162 return; 163 } 164 165 errno_bak = errno; 166 write(STDERR_FILENO, "find path: ", 11); 167 write(STDERR_FILENO, g_entry->fts_path, g_entry->fts_pathlen); 168 write(STDERR_FILENO, "\n", 1); 169 errno = errno_bak; 170 } 171