11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1991, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Kenneth Almquist. 71556Srgrimes * 81556Srgrimes * Redistribution and use in source and binary forms, with or without 91556Srgrimes * modification, are permitted provided that the following conditions 101556Srgrimes * are met: 111556Srgrimes * 1. Redistributions of source code must retain the above copyright 121556Srgrimes * notice, this list of conditions and the following disclaimer. 131556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141556Srgrimes * notice, this list of conditions and the following disclaimer in the 151556Srgrimes * documentation and/or other materials provided with the distribution. 161556Srgrimes * 4. Neither the name of the University nor the names of its contributors 171556Srgrimes * may be used to endorse or promote products derived from this software 181556Srgrimes * without specific prior written permission. 191556Srgrimes * 201556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301556Srgrimes * SUCH DAMAGE. 311556Srgrimes * 3217987Speter * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 3350471Speter * $FreeBSD$ 341556Srgrimes */ 351556Srgrimes 36193221Srse#include <string.h> 37193221Srse 381556Srgrimesstruct stackmark { 391556Srgrimes struct stack_block *stackp; 401556Srgrimes char *stacknxt; 411556Srgrimes int stacknleft; 4264702Scracauer struct stackmark *marknext; 431556Srgrimes}; 441556Srgrimes 451556Srgrimes 461556Srgrimesextern char *stacknxt; 471556Srgrimesextern int stacknleft; 48216743Sjillesextern char *sstrend; 491556Srgrimes 50193221Srsepointer ckmalloc(size_t); 5190111Simppointer ckrealloc(pointer, int); 52151795Sstefanfvoid ckfree(pointer); 53200956Sjilleschar *savestr(const char *); 5490111Simppointer stalloc(int); 5590111Simpvoid stunalloc(pointer); 5690111Simpvoid setstackmark(struct stackmark *); 5790111Simpvoid popstackmark(struct stackmark *); 5890111Simpchar *growstackstr(void); 59216743Sjilleschar *makestrspace(int, char *); 60215783Sjilleschar *stputbin(const char *data, int len, char *p); 61215783Sjilleschar *stputs(const char *data, char *p); 621556Srgrimes 631556Srgrimes 641556Srgrimes 651556Srgrimes#define stackblock() stacknxt 661556Srgrimes#define stackblocksize() stacknleft 67217209Sjilles#define grabstackblock(n) stalloc(n) 68216743Sjilles#define STARTSTACKSTR(p) p = stackblock() 69216743Sjilles#define STPUTC(c, p) do { if (p == sstrend) p = growstackstr(); *p++ = (c); } while(0) 70216743Sjilles#define CHECKSTRSPACE(n, p) { if (sstrend - p < n) p = makestrspace(n, p); } 71216743Sjilles#define USTPUTC(c, p) (*p++ = (c)) 72213814Sobrien/* 73213814Sobrien * STACKSTRNUL's use is where we want to be able to turn a stack 74213814Sobrien * (non-sentinel, character counting string) into a C string, 75213814Sobrien * and later pretend the NUL is not there. 76213814Sobrien * Note: Because of STACKSTRNUL's semantics, STACKSTRNUL cannot be used 77213814Sobrien * on a stack that will grabstackstr()ed. 78213814Sobrien */ 79216743Sjilles#define STACKSTRNUL(p) (p == sstrend ? (p = growstackstr(), *p = '\0') : (*p = '\0')) 80216743Sjilles#define STUNPUTC(p) (--p) 811556Srgrimes#define STTOPC(p) p[-1] 82216743Sjilles#define STADJUST(amount, p) (p += (amount)) 83216743Sjilles#define grabstackstr(p) stalloc((char *)p - stackblock()) 84216743Sjilles#define ungrabstackstr(s, p) stunalloc((s)) 85215783Sjilles#define STPUTBIN(s, len, p) p = stputbin((s), (len), p) 86215783Sjilles#define STPUTS(s, p) p = stputs((s), p) 87