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/*
* Copyright 2003-2021 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "Alloc.hxx"
#include "ConcatString.hxx"
#include <cstring>
#include <unistd.h>
[[noreturn]]
static void
oom()
{
(void)write(STDERR_FILENO, "Out of memory\n", 14);
std::_Exit(1);
}
void *
xalloc(size_t size)
{
auto p = std::malloc(size);
if (gcc_unlikely(p == nullptr))
oom();
return p;
}
void *
xmemdup(const void *s, size_t size)
{
auto p = xalloc(size);
std::memcpy(p, s, size);
return p;
}
char *
xstrdup(const char *s)
{
char *p = strdup(s);
if (gcc_unlikely(p == nullptr))
oom();
return p;
}
char *
xstrndup(const char *s, size_t n)
{
#ifdef HAVE_STRNDUP
char *p = strndup(s, n);
if (gcc_unlikely(p == nullptr))
oom();
#else
auto p = (char *)xalloc(n + 1);
std::memcpy(p, s, n);
p[n] = 0;
#endif
return p;
}
template<typename... Args>
gcc_malloc gcc_nonnull_all
static inline char *
t_xstrcatdup(Args&&... args)
{
constexpr size_t n = sizeof...(args);
size_t lengths[n];
const size_t total = FillLengths(lengths, args...);
auto p = (char *)xalloc(total + 1);
*StringCat(p, lengths, args...) = 0;
return p;
}
char *
xstrcatdup(const char *a, const char *b)
{
return t_xstrcatdup(a, b);
}
char *
xstrcatdup(const char *a, const char *b, const char *c)
{
return t_xstrcatdup(a, b, c);
}
char *
xstrcatdup(const char *a, const char *b, const char *c, const char *d)
{
return t_xstrcatdup(a, b, c, d);
}
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