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/* $OpenBSD: varargs.c,v 1.1 2010/01/12 23:22:07 nicm Exp $ */
/****************************************************************************
* Copyright (c) 2001-2007,2008 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 2001 *
****************************************************************************/
#include <curses.priv.h>
#include <ctype.h>
MODULE_ID("$Id: varargs.c,v 1.1 2010/01/12 23:22:07 nicm Exp $")
#ifdef TRACE
#define MAX_PARMS 10
typedef enum {
atUnknown = 0, atInteger, atFloat, atPoint, atString
} ARGTYPE;
#define VA_INT(type) ival = va_arg(ap, type)
#define VA_FLT(type) fval = va_arg(ap, type)
#define VA_PTR(type) pval = (char *)va_arg(ap, type)
#define VA_STR(type) sval = va_arg(ap, type)
#define MyBuffer _nc_globals.tracearg_buf
#define MyLength _nc_globals.tracearg_used
/*
* Returns a string that represents the parameter list of a printf-style call.
*/
NCURSES_EXPORT(char *)
_nc_varargs(const char *fmt, va_list ap)
{
static char dummy[] = "";
char buffer[BUFSIZ];
const char *param;
int n;
if (fmt == 0 || *fmt == '\0')
return dummy;
if (MyLength == 0)
MyBuffer = typeMalloc(char, MyLength = BUFSIZ);
if (MyBuffer == 0)
return dummy;
*MyBuffer = '\0';
while (*fmt != '\0') {
if (*fmt == '%') {
char *pval = 0; /* avoid const-cast */
const char *sval = "";
double fval = 0.0;
int done = FALSE;
int ival = 0;
int type = 0;
ARGTYPE parm[MAX_PARMS];
int parms = 0;
ARGTYPE used = atUnknown;
while (*++fmt != '\0' && !done) {
if (*fmt == '*') {
VA_INT(int);
if (parms < MAX_PARMS)
parm[parms++] = atInteger;
} else if (isalpha(UChar(*fmt))) {
done = TRUE;
switch (*fmt) {
case 'Z': /* FALLTHRU */
case 'h': /* FALLTHRU */
case 'l': /* FALLTHRU */
done = FALSE;
type = *fmt;
break;
case 'i': /* FALLTHRU */
case 'd': /* FALLTHRU */
case 'u': /* FALLTHRU */
case 'x': /* FALLTHRU */
case 'X': /* FALLTHRU */
if (type == 'l')
VA_INT(long);
else if (type == 'Z')
VA_INT(size_t);
else
VA_INT(int);
used = atInteger;
break;
case 'f': /* FALLTHRU */
case 'e': /* FALLTHRU */
case 'E': /* FALLTHRU */
case 'g': /* FALLTHRU */
case 'G': /* FALLTHRU */
VA_FLT(double);
used = atFloat;
break;
case 'c':
VA_INT(int);
used = atInteger;
break;
case 's':
VA_STR(const char *);
used = atString;
break;
case 'p':
VA_PTR(void *);
used = atPoint;
break;
case 'n':
VA_PTR(int *);
used = atPoint;
break;
default:
break;
}
} else if (*fmt == '%') {
done = TRUE;
}
if (used != atUnknown && parms < MAX_PARMS) {
parm[parms++] = used;
for (n = 0; n < parms; ++n) {
used = parm[n];
param = buffer;
switch (used) {
case atInteger:
snprintf(buffer, sizeof(buffer), "%d", ival);
break;
case atFloat:
snprintf(buffer, sizeof(buffer), "%f", fval);
break;
case atPoint:
snprintf(buffer, sizeof(buffer), "%p", pval);
break;
case atString:
param = _nc_visbuf2(1, sval);
break;
case atUnknown:
default:
strlcpy(buffer, "?", sizeof(buffer));
break;
}
MyLength += strlen(param) + 2;
MyBuffer = typeRealloc(char, MyLength, MyBuffer);
snprintf(MyBuffer + strlen(MyBuffer), MyLength - strlen(MyBuffer), ", %s", param);
}
}
used = atUnknown;
}
} else {
fmt++;
}
}
return (MyBuffer);
}
#else
EMPTY_MODULE(_nc_varargs)
#endif
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