static char *
my_asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
{
va_list args;
char *ret;
va_start (args, format);
ret = ulc_vasnprintf (resultbuf, lengthp, format, args);
va_end (args);
return ret;
}
static char *
my_xasprintf (const char *format, ...)
{
va_list args;
size_t length;
char *ret;
va_start (args, format);
ret = ulc_vasnprintf (NULL, &length, format, args);
va_end (args);
if (ret != NULL)
ASSERT (length == strlen (ret));
return ret;
}
/* Print formatted output to the stream FP.
Return string length of formatted string. On error, return a negative
value. */
int
ulc_fprintf (FILE *fp, const char *format, ...)
{
char buf[2000];
char *output;
size_t len;
size_t lenbuf = sizeof (buf);
va_list args;
va_start (args, format);
output = ulc_vasnprintf (buf, &lenbuf, format, args);
len = lenbuf;
va_end (args);
if (!output)
{
fseterr (fp);
return -1;
}
if (fwrite (output, 1, len, fp) < len)
{
if (output != buf)
{
int saved_errno = errno;
free (output);
errno = saved_errno;
}
return -1;
}
if (len > INT_MAX)
{
errno = EOVERFLOW;
fseterr (fp);
return -1;
}
return len;
}
