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https://github.com/tmux/tmux.git
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142 lines
2.7 KiB
C
142 lines
2.7 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2004 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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char *
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xstrdup(const char *str)
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{
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char *cp;
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if ((cp = strdup(str)) == NULL)
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fatal("xstrdup");
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return (cp);
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}
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void *
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xcalloc(size_t nmemb, size_t size)
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{
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void *ptr;
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if (size == 0 || nmemb == 0)
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fatalx("xcalloc: zero size");
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if ((ptr = calloc(nmemb, size)) == NULL)
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log_fatal("xcalloc: allocating %zu bytes", size);
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return (ptr);
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}
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void *
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xmalloc(size_t size)
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{
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void *ptr;
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if (size == 0)
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fatalx("xmalloc: zero size");
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if ((ptr = malloc(size)) == NULL)
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log_fatal("xmalloc: allocating %zu bytes", size);
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return (ptr);
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}
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void *
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xrealloc(void *oldptr, size_t newsize)
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{
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void *newptr;
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if (newsize == 0)
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fatalx("xrealloc: zero size");
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if ((newptr = realloc(oldptr, newsize)) == NULL)
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log_fatal("xrealloc: allocating %zu bytes", newsize);
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return (newptr);
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}
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void *
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xreallocarray(void *oldptr, size_t nmemb, size_t size)
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{
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void *newptr;
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if (nmemb == 0 || size == 0)
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fatalx("xreallocarray: zero size");
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if ((newptr = reallocarray(oldptr, nmemb, size)) == NULL)
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log_fatal("xreallocarray: allocating %zu * %zu bytes",
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nmemb, size);
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return (newptr);
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}
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int
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xasprintf(char **ret, const char *fmt, ...)
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{
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va_list ap;
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int i;
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va_start(ap, fmt);
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i = xvasprintf(ret, fmt, ap);
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va_end(ap);
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return (i);
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}
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int
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xvasprintf(char **ret, const char *fmt, va_list ap)
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{
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int i;
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i = vasprintf(ret, fmt, ap);
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if (i < 0 || *ret == NULL)
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fatal("xvasprintf");
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return (i);
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}
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int
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xsnprintf(char *buf, size_t len, const char *fmt, ...)
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{
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va_list ap;
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int i;
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va_start(ap, fmt);
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i = xvsnprintf(buf, len, fmt, ap);
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va_end(ap);
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return (i);
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}
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int
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xvsnprintf(char *buf, size_t len, const char *fmt, va_list ap)
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{
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int i;
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if (len > INT_MAX)
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fatalx("xvsnprintf: len > INT_MAX");
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i = vsnprintf(buf, len, fmt, ap);
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if (i < 0 || i >= (int)len)
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fatalx("xvsnprintf: overflow");
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return (i);
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}
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