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xfuncs.c
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xfuncs.c
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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 1.9 2010/02/13 23:27:12 vapier Exp $
*
* Copyright 2003-2007 Ned Ludd - <[email protected]>
* Copyright 2004-2007 Mike Frysinger - <[email protected]>
*/
#include "paxinc.h"
char *xstrdup(const char *s)
{
char *ret = strdup(s);
if (!ret) err("Could not strdup(): %s", strerror(errno));
return ret;
}
void *xmalloc(size_t size)
{
void *ret = malloc(size);
if (!ret) err("Could not malloc() %zu bytes", 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() %zu bytes", size);
return ret;
}
void xstrncat(char **dst, const char *src, size_t *curr_len, size_t n)
{
bool init;
size_t new_len;
init = *curr_len ? false : true;
new_len = (init ? 0 : strlen(*dst)) + strlen(src);
if (*curr_len <= new_len) {
*curr_len = new_len + (*curr_len / 2) + 1;
*dst = realloc(*dst, *curr_len);
if (!*dst)
err("could not realloc() %zu bytes", *curr_len);
if (init)
*dst[0] = '\0';
}
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);
}