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/*
* Copyright 2003-2007 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
* $Header: /var/cvsroot/gentoo-projects/pax-utils/xfuncs.c,v 1.6 2009/12/01 10:15:06 vapier Exp $
*
* Copyright 2003-2007 Ned Ludd - <solar@gentoo.org>
* Copyright 2004-2007 Mike Frysinger - <vapier@gentoo.org>
*/
#include "paxinc.h"
char *xstrdup(const char *s)
{
char *ret = strdup(s);
if (!ret) err("Could not strdup(): %s", strerror(errno));
return ret;
}
#ifndef strndup
static inline char *my_strndup(const char *str, size_t n)
{
size_t r;
char *ret;
for (r = 0; r < n; ++r)
if (!str[r])
break;
ret = xmalloc(r + 1);
memcpy(ret, str, r);
ret[r] = '\0';
return ret;
}
/* do this to avoid warning: declaration of 'strndup' shadows a built-in
* function */
#define strndup(S, N) my_strndup(S, N)
#endif
char *xstrndup(const char *s, const size_t n)
{
char *ret = strndup(s, n);
if (!ret) err("Could not strndup(): %s", strerror(errno));
return ret;
}
void *xmalloc(size_t size)
{
void *ret = malloc(size);
if (!ret) err("Could not malloc() %li bytes", (unsigned long)size);
return ret;
}
void *xzalloc(size_t size)
{
return memset(xmalloc(size), 0, size);
}
void *xrealloc(void *ptr, size_t size)
{
void *ret = realloc(ptr, size);
if (!ret) err("Could not realloc() %li bytes", (unsigned long)size);
return ret;
}
void xstrncat(char **dst, const char *src, size_t *curr_len, size_t n)
{
size_t new_len;
new_len = (*curr_len ? strlen(*dst) : 0) + strlen(src);
if (*curr_len <= new_len) {
*curr_len = new_len + (*curr_len / 2);
*dst = realloc(*dst, *curr_len);
if (!*dst)
err("could not realloc() %li bytes", (unsigned long)*curr_len);
}
if (n)
strncat(*dst, src, n);
else
strcat(*dst, src);
}
void xchrcat(char **dst, const char append, size_t *curr_len)
{
static char my_app[2];
my_app[0] = append;
my_app[1] = '\0';
xstrcat(dst, my_app, curr_len);
}
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