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/* Copyright (C) 2008 TightVNC Team. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <os/print.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#ifndef HAVE_VSNPRINTF
size_t internal_memcpy(char *dest, const char *src, size_t destsize,
size_t srcsize) {
size_t copied;
copied = ((destsize) < (srcsize)) ? (destsize) : (srcsize);
memcpy(dest, src, copied);
return copied;
}
int tight_vsnprintf(char *str, size_t n, const char *format, va_list ap) {
int written = 0;
int tmpint, len;
char buf[64]; /* Is it enough? */
char *tmpstr;
if (format == NULL || n < 1)
return 0;
while (*format != '\0' && written < n - 1) {
if (*format != '%') {
if (written < n) {
str[written++] = *format++;
continue;
} else
break;
}
format++;
switch (*format) {
case '\0':
str[written++] = '%';
continue;
case 'd':
tmpint = va_arg(ap, int);
sprintf(buf, "%d", tmpint);
len = strlen(buf);
written += internal_memcpy (&str[written], buf,
len, n - written);
break;
case 's':
tmpstr = va_arg(ap, char *);
len = strlen(tmpstr);
written += internal_memcpy (&str[written],
tmpstr, len,
n - written);
break;
/* Catch unimplemented stuff */
default:
fprintf(stderr, "Unimplemented format: %c\n",
*format);
abort();
}
format++;
}
str[written] = '\0';
return written;
}
#endif /* HAVE_VSNPRINTF */
#ifndef HAVE_SNPRINTF
int tight_snprintf(char *str, size_t n, const char *format, ...) {
va_list ap;
int written;
va_start(ap, format);
written = vsnprintf(str, n, format, ap);
va_end(ap);
return written;
}
#endif /* HAVE_SNPRINTF */
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