1178825Sdfr/* 2178825Sdfr * Copyright (c) 2005 Kungliga Tekniska H�gskolan 3178825Sdfr * (Royal Institute of Technology, Stockholm, Sweden). 4178825Sdfr * All rights reserved. 5178825Sdfr * 6178825Sdfr * Redistribution and use in source and binary forms, with or without 7178825Sdfr * modification, are permitted provided that the following conditions 8178825Sdfr * are met: 9178825Sdfr * 10178825Sdfr * 1. Redistributions of source code must retain the above copyright 11178825Sdfr * notice, this list of conditions and the following disclaimer. 12178825Sdfr * 13178825Sdfr * 2. Redistributions in binary form must reproduce the above copyright 14178825Sdfr * notice, this list of conditions and the following disclaimer in the 15178825Sdfr * documentation and/or other materials provided with the distribution. 16178825Sdfr * 17178825Sdfr * 3. Neither the name of the Institute nor the names of its contributors 18178825Sdfr * may be used to endorse or promote products derived from this software 19178825Sdfr * without specific prior written permission. 20178825Sdfr * 21178825Sdfr * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22178825Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23178825Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24178825Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25178825Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26178825Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27178825Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28178825Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29178825Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30178825Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31178825Sdfr * SUCH DAMAGE. 32178825Sdfr */ 33178825Sdfr 34178825Sdfr#ifdef HAVE_CONFIG_H 35178825Sdfr#include <config.h> 36178825SdfrRCSID("$Id: strpool.c 21005 2007-06-08 01:54:35Z lha $"); 37178825Sdfr#endif 38178825Sdfr 39178825Sdfr#include <stdarg.h> 40178825Sdfr#include <stdlib.h> 41178825Sdfr#include "roken.h" 42178825Sdfr 43178825Sdfrstruct rk_strpool { 44178825Sdfr char *str; 45178825Sdfr size_t len; 46178825Sdfr}; 47178825Sdfr 48178825Sdfr/* 49178825Sdfr * 50178825Sdfr */ 51178825Sdfr 52178825Sdfrvoid ROKEN_LIB_FUNCTION 53178825Sdfrrk_strpoolfree(struct rk_strpool *p) 54178825Sdfr{ 55178825Sdfr if (p->str) { 56178825Sdfr free(p->str); 57178825Sdfr p->str = NULL; 58178825Sdfr } 59178825Sdfr free(p); 60178825Sdfr} 61178825Sdfr 62178825Sdfr/* 63178825Sdfr * 64178825Sdfr */ 65178825Sdfr 66178825Sdfrstruct rk_strpool * ROKEN_LIB_FUNCTION 67178825Sdfrrk_strpoolprintf(struct rk_strpool *p, const char *fmt, ...) 68178825Sdfr{ 69178825Sdfr va_list ap; 70178825Sdfr char *str, *str2; 71178825Sdfr int len; 72178825Sdfr 73178825Sdfr if (p == NULL) { 74178825Sdfr p = malloc(sizeof(*p)); 75178825Sdfr if (p == NULL) 76178825Sdfr return NULL; 77178825Sdfr p->str = NULL; 78178825Sdfr p->len = 0; 79178825Sdfr } 80178825Sdfr va_start(ap, fmt); 81178825Sdfr len = vasprintf(&str, fmt, ap); 82178825Sdfr va_end(ap); 83178825Sdfr if (str == NULL) { 84178825Sdfr rk_strpoolfree(p); 85178825Sdfr return NULL; 86178825Sdfr } 87178825Sdfr str2 = realloc(p->str, len + p->len + 1); 88178825Sdfr if (str2 == NULL) { 89178825Sdfr rk_strpoolfree(p); 90178825Sdfr return NULL; 91178825Sdfr } 92178825Sdfr p->str = str2; 93178825Sdfr memcpy(p->str + p->len, str, len + 1); 94178825Sdfr p->len += len; 95178825Sdfr free(str); 96178825Sdfr return p; 97178825Sdfr} 98178825Sdfr 99178825Sdfr/* 100178825Sdfr * 101178825Sdfr */ 102178825Sdfr 103178825Sdfrchar * ROKEN_LIB_FUNCTION 104178825Sdfrrk_strpoolcollect(struct rk_strpool *p) 105178825Sdfr{ 106178825Sdfr char *str = p->str; 107178825Sdfr p->str = NULL; 108178825Sdfr free(p); 109178825Sdfr return str; 110178825Sdfr} 111