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/* $OpenBSD: trace_buf.c,v 1.4 2010/01/12 23:22:07 nicm Exp $ */
/****************************************************************************
* Copyright (c) 1998-2007,2008 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 1997-on *
****************************************************************************/
/*
* trace_buf.c - Tracing/Debugging buffers (attributes)
*/
#include <curses.priv.h>
MODULE_ID("$Id: trace_buf.c,v 1.4 2010/01/12 23:22:07 nicm Exp $")
#define MyList _nc_globals.tracebuf_ptr
#define MySize _nc_globals.tracebuf_used
static char *
_nc_trace_alloc(int bufnum, size_t want)
{
#ifdef TRACE
char *result = 0;
if (bufnum >= 0) {
if ((size_t) (bufnum + 1) > MySize) {
size_t need = (bufnum + 1) * 2;
if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) {
while (need > MySize)
MyList[MySize++].text = 0;
}
}
if (MyList != 0) {
if (MyList[bufnum].text == 0
|| want > MyList[bufnum].size) {
MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text);
if (MyList[bufnum].text != 0)
MyList[bufnum].size = want;
}
result = MyList[bufnum].text;
}
}
#if NO_LEAKS
else {
if (MySize) {
if (MyList) {
while (MySize--) {
if (MyList[MySize].text != 0) {
free(MyList[MySize].text);
}
}
free(MyList);
MyList = 0;
}
MySize = 0;
}
}
#endif
return result;
#else
return NULL;
#endif
}
/*
* (re)Allocate a buffer big enough for the caller's wants.
*/
NCURSES_EXPORT(char *)
_nc_trace_buf(int bufnum, size_t want)
{
char *result = _nc_trace_alloc(bufnum, want);
if (result != 0)
*result = '\0';
return result;
}
/*
* Append a new string to an existing buffer.
*/
NCURSES_EXPORT(char *)
_nc_trace_bufcat(int bufnum, const char *value)
{
char *buffer = _nc_trace_alloc(bufnum, 0);
if (buffer != 0) {
size_t have = strlen(buffer), length;
length = 1 + have + strlen(value);
buffer = _nc_trace_alloc(bufnum, length);
if (buffer != 0)
(void) strlcpy(buffer + have, value, length);
}
return buffer;
}
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