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/*
* Copyright 2003-2012 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
*
* Copyright 2003-2012 Ned Ludd - <solar@gentoo.org>
* Copyright 2004-2012 Mike Frysinger - <vapier@gentoo.org>
*/
#include <errno.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "paxinc.h"
#include "xfuncs.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);
}
void *xmemdup(const void *src, size_t n)
{
void *ret = xmalloc(n);
memcpy(ret, src, n);
return ret;
}
void xarraypush(array_t *arr, const void *ele, size_t ele_len)
{
size_t n = arr->num++;
/* We allocate one excess element so that array_for_each can
* always safely fetch the next element. It's minor memory
* wastage to avoid having to do a len check all the time.
*/
arr->eles = xrealloc_array(arr->eles, arr->num + 1, sizeof(ele));
arr->eles[n] = xmemdup(ele, ele_len);
}
void xarrayfree(array_t *arr)
{
array_t blank = array_init_decl;
size_t n;
for (n = 0; n < arr->num; ++n)
free(arr->eles[n]);
free(arr->eles);
*arr = blank;
}
char *array_flatten_str(array_t *array)
{
size_t n, len = 0;
char *str, *ret = NULL;
array_for_each(array, n, str) {
if (ret)
xchrcat(&ret, ',', &len);
xstrcat(&ret, str, &len);
}
return ret;
}
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