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/* $OpenBSD: trace_buf.c,v 1.1 1997/12/03 05:21:44 millert Exp $ */
/******************************************************************************
* Copyright 1997 by Thomas E. Dickey <dickey@clark.net> *
* All Rights Reserved. *
* *
* Permission to use, copy, modify, and distribute this software and its *
* documentation for any purpose and without fee is hereby granted, provided *
* that the above copyright notice appear in all copies and that both that *
* copyright notice and this permission notice appear in supporting *
* documentation, and that the name of the above listed copyright holder(s) *
* not be used in advertising or publicity pertaining to distribution of the *
* software without specific, written prior permission. *
* *
* THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD *
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND *
* FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE *
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES *
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN *
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR *
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. *
******************************************************************************/
/*
* trace_buf.c - Tracing/Debugging buffers (attributes)
*/
#include <curses.priv.h>
MODULE_ID("Id: trace_buf.c,v 1.2 1997/10/26 22:09:05 tom Exp $")
char * _nc_trace_buf(int bufnum, size_t want)
{
static struct {
char *text;
size_t size;
} *list;
static size_t have;
#if NO_LEAKS
if (bufnum < 0) {
if (have) {
while (have--) {
free(list[have].text);
}
free(list);
}
return 0;
}
#endif
if ((size_t)(bufnum+1) > have) {
size_t need = (bufnum + 1) * 2;
size_t used = sizeof(*list) * need;
list = (list == 0) ? malloc(used) : realloc(list, used);
if (list == 0) {
errno = ENOMEM;
return(NULL);
}
while (need > have)
list[have++].text = 0;
}
if (list[bufnum].text == 0)
{
list[bufnum].text = malloc(want);
list[bufnum].size = want;
}
else if (want > list[bufnum].size) {
list[bufnum].text = realloc(list[bufnum].text, want);
list[bufnum].size = want;
}
if (list[bufnum].text != 0)
*(list[bufnum].text) = '\0';
else
errno = ENOMEM;
return list[bufnum].text;
}
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