155682Smarkm/* 2233294Sstas * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H��gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 5233294Sstas * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 9233294Sstas * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 12233294Sstas * 1355682Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1455682Smarkm * notice, this list of conditions and the following disclaimer in the 1555682Smarkm * documentation and/or other materials provided with the distribution. 16233294Sstas * 1755682Smarkm * 3. Neither the name of the Institute nor the names of its contributors 1855682Smarkm * may be used to endorse or promote products derived from this software 1955682Smarkm * without specific prior written permission. 20233294Sstas * 2155682Smarkm * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2255682Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2355682Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2455682Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2555682Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2655682Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2755682Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2855682Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2955682Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3055682Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3155682Smarkm * SUCH DAMAGE. 3255682Smarkm */ 3355682Smarkm 3455682Smarkm#include <config.h> 35233294Sstas 3655682Smarkm#include "roken.h" 3755682Smarkm 38233294SstasROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 3955682Smarkmroken_concat (char *s, size_t len, ...) 4055682Smarkm{ 4155682Smarkm int ret; 4255682Smarkm va_list args; 4355682Smarkm 4455682Smarkm va_start(args, len); 4555682Smarkm ret = roken_vconcat (s, len, args); 4655682Smarkm va_end(args); 4755682Smarkm return ret; 4855682Smarkm} 4955682Smarkm 50233294SstasROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 5155682Smarkmroken_vconcat (char *s, size_t len, va_list args) 5255682Smarkm{ 5355682Smarkm const char *a; 5455682Smarkm 5555682Smarkm while ((a = va_arg(args, const char*))) { 5655682Smarkm size_t n = strlen (a); 5755682Smarkm 5855682Smarkm if (n >= len) 5955682Smarkm return -1; 6055682Smarkm memcpy (s, a, n); 6155682Smarkm s += n; 6255682Smarkm len -= n; 6355682Smarkm } 6455682Smarkm *s = '\0'; 6555682Smarkm return 0; 6655682Smarkm} 6755682Smarkm 68233294SstasROKEN_LIB_FUNCTION size_t ROKEN_LIB_CALL 6955682Smarkmroken_vmconcat (char **s, size_t max_len, va_list args) 7055682Smarkm{ 7155682Smarkm const char *a; 7255682Smarkm char *p, *q; 7355682Smarkm size_t len = 0; 7455682Smarkm *s = NULL; 7555682Smarkm p = malloc(1); 7655682Smarkm if(p == NULL) 7755682Smarkm return 0; 7855682Smarkm len = 1; 7955682Smarkm while ((a = va_arg(args, const char*))) { 8055682Smarkm size_t n = strlen (a); 81233294Sstas 8255682Smarkm if(max_len && len + n > max_len){ 8355682Smarkm free(p); 8455682Smarkm return 0; 8555682Smarkm } 8655682Smarkm q = realloc(p, len + n); 8755682Smarkm if(q == NULL){ 8855682Smarkm free(p); 8955682Smarkm return 0; 9055682Smarkm } 9155682Smarkm p = q; 9255682Smarkm memcpy (p + len - 1, a, n); 9355682Smarkm len += n; 9455682Smarkm } 9555682Smarkm p[len - 1] = '\0'; 9655682Smarkm *s = p; 9755682Smarkm return len; 9855682Smarkm} 9955682Smarkm 100233294SstasROKEN_LIB_FUNCTION size_t ROKEN_LIB_CALL 10155682Smarkmroken_mconcat (char **s, size_t max_len, ...) 10255682Smarkm{ 103233294Sstas size_t ret; 10455682Smarkm va_list args; 10555682Smarkm 10655682Smarkm va_start(args, max_len); 10755682Smarkm ret = roken_vmconcat (s, max_len, args); 10855682Smarkm va_end(args); 10955682Smarkm return ret; 11055682Smarkm} 111