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/*
* Copyright (C) 2001-2004 Michael H. Schimek
* Copyright (C) 2000-2003 Iaki Garca Etxebarria
*
* This program 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 program 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 program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: misc.c,v 1.2 2005/01/27 04:20:19 mschimek Exp $ */
#include <stdlib.h> /* malloc() */
#include "misc.h"
#ifndef HAVE_STRLCPY
/**
* @internal
* strlcpy() is a BSD/GNU extension.
*/
size_t
_tv_strlcpy (char * dst,
const char * src,
size_t len)
{
char *dst1;
char *end;
char c;
assert (NULL != dst);
assert (NULL != src);
assert (len > 0);
dst1 = dst;
end = dst + len - 1;
while (dst < end && (c = *src++))
*dst++ = c;
*dst = 0;
return dst - dst1;
}
#endif /* !HAVE_STRLCPY */
#ifndef HAVE_STRNDUP
/**
* @internal
* strndup() is a BSD/GNU extension.
*/
char *
_tv_strndup (const char * s,
size_t len)
{
size_t n;
char *r;
if (NULL == s)
return NULL;
n = strlen (s);
len = MIN (len, n);
r = malloc (len + 1);
if (r) {
memcpy (r, s, len);
r[len] = 0;
}
return r;
}
#endif /* !HAVE_STRNDUP */
#ifndef HAVE_ASPRINTF
/**
* @internal
* asprintf() is a GNU extension.
*/
int
_tv_asprintf (char ** dstp,
const char * templ,
...)
{
char *buf;
int size;
int temp;
assert (NULL != dstp);
assert (NULL != templ);
temp = errno;
buf = NULL;
size = 64;
for (;;) {
va_list ap;
char *buf2;
int len;
if (!(buf2 = realloc (buf, size)))
break;
buf = buf2;
va_start (ap, templ);
len = vsnprintf (buf, size, templ, ap);
va_end (ap);
if (len < 0) {
/* Not enough. */
size *= 2;
} else if (len < size) {
*dstp = buf;
errno = temp;
return len;
} else {
/* Size needed. */
size = len + 1;
}
}
free (buf);
*dstp = NULL;
errno = temp;
return -1;
}
#endif /* !HAVE_ASPRINTF */
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