compat.h
#ifndef WREPORT_COMPAT_H
#define WREPORT_COMPAT_H
#include "config.h"
#include <cstdarg>
#include <cstring>
#include <cstdlib>
#include <cmath>
#if USE_OWN_VASPRINTF
static int vasprintf (char **result, const char *format, va_list args)
{
const char *p = format;
/* Add one to make sure that it is never zero, which might cause malloc
to return NULL. */
int total_width = strlen (format) + 1;
va_list ap;
memcpy ((void *)&ap, (void *)&args, sizeof (va_list));
while (*p != '\0')
{
if (*p++ == '%')
{
while (strchr ("-+ #0", *p))
++p;
if (*p == '*')
{
++p;
total_width += abs (va_arg (ap, int));
}
else
total_width += strtoul (p, (char **) &p, 10);
if (*p == '.')
{
++p;
if (*p == '*')
{
++p;
total_width += abs (va_arg (ap, int));
}
else
total_width += strtoul (p, (char **) &p, 10);
}
while (strchr ("hlL", *p))
++p;
/* Should be big enough for any format specifier except %s and floats. */
total_width += 30;
switch (*p)
{
case 'd':
case 'i':
case 'o':
case 'u':
case 'x':
case 'X':
case 'c':
(void) va_arg (ap, int);
break;
case 'f':
case 'e':
case 'E':
case 'g':
case 'G':
(void) va_arg (ap, double);
/* Since an ieee double can have an exponent of 307, we'll
make the buffer wide enough to cover the gross case. */
total_width += 307;
break;
case 's':
total_width += strlen (va_arg (ap, char *));
break;
case 'p':
case 'n':
(void) va_arg (ap, char *);
break;
}
p++;
}
}
*result = (char*)malloc (total_width);
if (*result != NULL) {
return vsprintf (*result, format, args);}
else {
return 0;
}
}
static int asprintf (char **result, const char *format, ...)
{
va_list ap;
va_start(ap, format);
int res = vasprintf(result, format, ap);
va_end(ap);
return res;
}
#endif
#endif