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/* $OpenBSD: trace_buf.c,v 1.3 1998/08/14 21:11:44 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Thomas E. Dickey <dickey@clark.net> 1997 *
****************************************************************************/
/*
* trace_buf.c - Tracing/Debugging buffers (attributes)
*/
#include <curses.priv.h>
MODULE_ID("$From: trace_buf.c,v 1.5 1998/05/30 23:30:09 Todd.Miller Exp $")
char * _nc_trace_buf(int bufnum, size_t want)
{
static struct {
char *text;
size_t size;
} *list, *nlist;
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;
nlist = (list == 0) ? malloc(used) : realloc(list, used);
if (nlist == 0) {
if (list != 0)
free(list);
return(NULL);
}
list = nlist;
while (need > have)
list[have++].text = 0;
}
if (list[bufnum].text == 0)
{
list[bufnum].text = malloc(want);
}
else if (want > list[bufnum].size)
{
char *p = realloc(list[bufnum].text, want);
if (p != 0) {
list[bufnum].text = p;
} else {
free(list[bufnum].text);
list[bufnum].text = 0;
}
}
list[bufnum].size = want;
if (list[bufnum].text != 0)
*(list[bufnum].text) = '\0';
return list[bufnum].text;
}
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