1 /*- 2 * Generic "support" routines to replace those obtained from libiberty for ld. 3 * 4 * I've collected these from random bits of (published) code I've written 5 * over the years, not that they are a big deal. [email protected] 6 * 7 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 8 * 9 * Copyright (C) 1996 10 * Peter Wemm. All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 *- 33 * $FreeBSD$ 34 */ 35 #include <sys/types.h> 36 #include <string.h> 37 #include <stdlib.h> 38 #include <err.h> 39 40 #include "support.h" 41 42 char * 43 concat(const char *s1, const char *s2, const char *s3) 44 { 45 int len = 1; 46 char *s; 47 if (s1) 48 len += strlen(s1); 49 if (s2) 50 len += strlen(s2); 51 if (s3) 52 len += strlen(s3); 53 s = xmalloc(len); 54 s[0] = '\0'; 55 if (s1) 56 strcat(s, s1); 57 if (s2) 58 strcat(s, s2); 59 if (s3) 60 strcat(s, s3); 61 return s; 62 } 63 64 void * 65 xmalloc(size_t n) 66 { 67 char *p = malloc(n); 68 69 if (p == NULL) 70 errx(1, "Could not allocate memory"); 71 72 return p; 73 } 74 75 void * 76 xrealloc(void *p, size_t n) 77 { 78 p = realloc(p, n); 79 80 if (p == NULL) 81 errx(1, "Could not allocate memory"); 82 83 return p; 84 } 85