10e3d5408SPeter Wemm /****************************************************************************
25ca44d1cSRong-En Fan * Copyright 2020 Thomas E. Dickey *
30e3d5408SPeter Wemm * Copyright 1998-2011,2012 Free Software Foundation, Inc. *
40e3d5408SPeter Wemm * *
50e3d5408SPeter Wemm * Permission is hereby granted, free of charge, to any person obtaining a *
60e3d5408SPeter Wemm * copy of this software and associated documentation files (the *
70e3d5408SPeter Wemm * "Software"), to deal in the Software without restriction, including *
80e3d5408SPeter Wemm * without limitation the rights to use, copy, modify, merge, publish, *
90e3d5408SPeter Wemm * distribute, distribute with modifications, sublicense, and/or sell *
100e3d5408SPeter Wemm * copies of the Software, and to permit persons to whom the Software is *
110e3d5408SPeter Wemm * furnished to do so, subject to the following conditions: *
120e3d5408SPeter Wemm * *
130e3d5408SPeter Wemm * The above copyright notice and this permission notice shall be included *
140e3d5408SPeter Wemm * in all copies or substantial portions of the Software. *
150e3d5408SPeter Wemm * *
160e3d5408SPeter Wemm * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
170e3d5408SPeter Wemm * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
180e3d5408SPeter Wemm * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
190e3d5408SPeter Wemm * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
200e3d5408SPeter Wemm * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
210e3d5408SPeter Wemm * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
220e3d5408SPeter Wemm * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
230e3d5408SPeter Wemm * *
240e3d5408SPeter Wemm * Except as contained in this notice, the name(s) of the above copyright *
250e3d5408SPeter Wemm * holders shall not be used in advertising or otherwise to promote the *
260e3d5408SPeter Wemm * sale, use or other dealings in this Software without prior written *
270e3d5408SPeter Wemm * authorization. *
280e3d5408SPeter Wemm ****************************************************************************/
290e3d5408SPeter Wemm
300e3d5408SPeter Wemm /****************************************************************************
310e3d5408SPeter Wemm * Author: Thomas E. Dickey 1997-on *
320e3d5408SPeter Wemm ****************************************************************************/
330e3d5408SPeter Wemm /*
340e3d5408SPeter Wemm * trace_buf.c - Tracing/Debugging buffers (attributes)
350e3d5408SPeter Wemm */
360e3d5408SPeter Wemm
370e3d5408SPeter Wemm #include <curses.priv.h>
385ca44d1cSRong-En Fan
390e3d5408SPeter Wemm MODULE_ID("$Id: trace_buf.c,v 1.21 2020/02/02 23:34:34 tom Exp $")
405ca44d1cSRong-En Fan
415ca44d1cSRong-En Fan #ifdef TRACE
420e3d5408SPeter Wemm
434a1a9510SRong-En Fan #define MyList _nc_globals.tracebuf_ptr
444a1a9510SRong-En Fan #define MySize _nc_globals.tracebuf_used
450e3d5408SPeter Wemm
464a1a9510SRong-En Fan static char *
_nc_trace_alloc(int bufnum,size_t want)470e3d5408SPeter Wemm _nc_trace_alloc(int bufnum, size_t want)
484a1a9510SRong-En Fan {
495ca44d1cSRong-En Fan char *result = 0;
500e3d5408SPeter Wemm
515ca44d1cSRong-En Fan if (bufnum >= 0) {
520e3d5408SPeter Wemm if ((size_t) (bufnum + 1) > MySize) {
535ca44d1cSRong-En Fan size_t need = (size_t) (bufnum + 1) * 2;
545ca44d1cSRong-En Fan if ((MyList = typeRealloc(TRACEBUF, need, MyList)) != 0) {
550e3d5408SPeter Wemm while (need > MySize)
560e3d5408SPeter Wemm MyList[MySize++].text = 0;
575ca44d1cSRong-En Fan }
585ca44d1cSRong-En Fan }
595ca44d1cSRong-En Fan
605ca44d1cSRong-En Fan if (MyList != 0) {
615ca44d1cSRong-En Fan if (MyList[bufnum].text == 0
620e3d5408SPeter Wemm || want > MyList[bufnum].size) {
630e3d5408SPeter Wemm MyList[bufnum].text = typeRealloc(char, want, MyList[bufnum].text);
645ca44d1cSRong-En Fan if (MyList[bufnum].text != 0)
654a1a9510SRong-En Fan MyList[bufnum].size = want;
664a1a9510SRong-En Fan }
674a1a9510SRong-En Fan result = MyList[bufnum].text;
685ca44d1cSRong-En Fan }
695ca44d1cSRong-En Fan }
705ca44d1cSRong-En Fan #if NO_LEAKS
715ca44d1cSRong-En Fan else {
724a1a9510SRong-En Fan if (MySize) {
735ca44d1cSRong-En Fan if (MyList) {
744a1a9510SRong-En Fan while (MySize--) {
754a1a9510SRong-En Fan if (MyList[MySize].text != 0) {
764a1a9510SRong-En Fan free(MyList[MySize].text);
774a1a9510SRong-En Fan }
784a1a9510SRong-En Fan }
794a1a9510SRong-En Fan free(MyList);
804a1a9510SRong-En Fan MyList = 0;
814a1a9510SRong-En Fan }
824a1a9510SRong-En Fan MySize = 0;
834a1a9510SRong-En Fan }
844a1a9510SRong-En Fan }
854a1a9510SRong-En Fan #endif
864a1a9510SRong-En Fan return result;
874a1a9510SRong-En Fan }
884a1a9510SRong-En Fan
894a1a9510SRong-En Fan /*
904a1a9510SRong-En Fan * (re)Allocate a buffer big enough for the caller's wants.
914a1a9510SRong-En Fan */
924a1a9510SRong-En Fan NCURSES_EXPORT(char *)
_nc_trace_buf(int bufnum,size_t want)934a1a9510SRong-En Fan _nc_trace_buf(int bufnum, size_t want)
944a1a9510SRong-En Fan {
954a1a9510SRong-En Fan char *result = _nc_trace_alloc(bufnum, want);
964a1a9510SRong-En Fan if (result != 0)
974a1a9510SRong-En Fan *result = '\0';
984a1a9510SRong-En Fan return result;
994a1a9510SRong-En Fan }
1004a1a9510SRong-En Fan
1014a1a9510SRong-En Fan /*
1024a1a9510SRong-En Fan * Append a new string to an existing buffer.
1034a1a9510SRong-En Fan */
1044a1a9510SRong-En Fan NCURSES_EXPORT(char *)
_nc_trace_bufcat(int bufnum,const char * value)1050e3d5408SPeter Wemm _nc_trace_bufcat(int bufnum, const char *value)
106 {
107 char *buffer = _nc_trace_alloc(bufnum, (size_t) 0);
108 if (buffer != 0) {
109 size_t have = strlen(buffer);
110 size_t need = strlen(value) + have;
111
112 buffer = _nc_trace_alloc(bufnum, 1 + need);
113 if (buffer != 0)
114 _nc_STRCPY(buffer + have, value, need);
115
116 }
117 return buffer;
118 }
119 #else
120 EMPTY_MODULE(_nc_empty_trace_buf)
121 #endif /* TRACE */
122