/* * Copyright (c) 1983, 1985, 1991 Peter J. Nicklin. * Copyright (c) 1991 Version Technology. * All Rights Reserved. * * $License: VT.1.1 $ * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: (1) Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. (2) Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. (3) All advertising materials mentioning * features or use of this software must display the following * acknowledgement: ``This product includes software developed by * Version Technology.'' Neither the name of Version Technology nor * the name of Peter J. Nicklin may be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY VERSION TECHNOLOGY ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL VERSION TECHNOLOGY BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * Report problems and direct questions to nicklin@netcom.com * * $Header: slappend.c,v 4.3 91/11/25 19:44:59 nicklin Exp $ * * Author: Peter J. Nicklin */ /* * slappend() saves a null-terminated key string somewhere and inserts a * pointer to the key at the tail of list slist. Returns a pointer to * the somewhere, or a null pointer if out of memory. */ #include <stdio.h> #include "macro.h" #include "null.h" #include "slist.h" #include "stringx.h" char * slappend(key, slist) char *key; /* key string */ SLIST *slist; /* pointer to list head block */ { char *malloc(); /* memory allocator */ SLBLK *slbptr; /* pointer to list block */ unsigned int klen; /* key length */ if (slist == NULL) return(NULL); klen = strlen(key); slist->maxkey = MAX(slist->maxkey, klen); if ((slbptr = (SLBLK *) malloc(sizeof(SLBLK))) == NULL || (slbptr->key = malloc(klen+1)) == NULL) { nocore(); return(NULL); } strcpy(slbptr->key, key); slbptr->next = NULL; if (slist->tail == NULL) slist->head = slist->tail = slbptr; else slist->tail = slist->tail->next = slbptr; slist->nk++; return(slbptr->key); }