src/xstring.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2009, 2010, 2011, 2012 Daniel Borkmann.
   5  * Copyright 2009, 2010, 2011, 2012 Emmanuel Roullit.
   6  * strlcpy, Copyright 1991, 1992  Linus Torvalds.
   7  * Subject to the GPL, version 2.
   8  */
   9
  10 #define _BSD_SOURCE
  11 #include <string.h>
  12 #include <stdio.h>
  13 #include <stdarg.h>
  14
  15 #include "xstring.h"
  16
  17 size_t strlcpy(char *dest, const char *src, size_t size)
  18 {
  19         size_t ret = strlen(src);
  20         if (size) {
  21                 size_t len = (ret >= size) ? size - 1 : ret;
  22                 memcpy(dest, src, len);
  23                 dest[len] = '\0';
  24         }
  25         return ret;
  26 }
  27
  28 int slprintf(char *dst, size_t size, const char *fmt, ...)
  29 {
  30         int ret;
  31         va_list ap;
  32         va_start(ap, fmt);
  33         ret = vsnprintf(dst, size, fmt, ap);
  34         dst[size - 1] = '\0';
  35         va_end(ap);
  36         return ret;
  37 }