85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/* @(#)strlcatl.c 1.1 15/03/03 Copyright 2015 J. Schilling */
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/*
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* list version of strlcat()
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*
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* concatenates all past first parameter until a NULL pointer is reached
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*
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* WARNING: a NULL constant is not a NULL pointer, so a caller must
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* cast a NULL constant to a pointer: (char *)NULL
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*
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* returns number of bytes needed to fit all
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*
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* Copyright (c) 2015 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/mconfig.h>
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#include <schily/varargs.h>
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#include <schily/standard.h>
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#include <schily/string.h>
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#include <schily/schily.h>
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/* VARARGS3 */
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#ifdef PROTOTYPES
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EXPORT size_t
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strlcatl(char *to, size_t len, ...)
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#else
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EXPORT size_t
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strlcatl(to, len, va_alist)
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char *to;
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size_t len;
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va_dcl
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#endif
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{
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va_list args;
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register char *p;
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register char *tor = to;
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size_t olen = len;
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#ifdef PROTOTYPES
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va_start(args, len);
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#else
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va_start(args);
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#endif
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if (len > 0) {
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while (--len > 0 && *tor++ != '\0')
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;
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if (len == 0)
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goto toolong;
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while ((p = va_arg(args, char *)) != NULL) {
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tor--;
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len++;
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while (--len > 0 && (*tor++ = *p++) != '\0')
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;
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if (len == 0) {
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*tor = '\0';
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olen = tor - to + strlen(p);
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goto toolong;
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}
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}
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olen = --tor - to;
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}
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va_end(args);
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return (olen);
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toolong:
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while ((p = va_arg(args, char *)) != NULL) {
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olen += strlen(p);
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}
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va_end(args);
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return (olen);
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}
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