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https://github.com/tmux/tmux.git
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35876eaab9
terminal to be switched between several different windows and programs displayed on one terminal be detached from one terminal and moved to another. ok deraadt pirofti
145 lines
2.9 KiB
C
145 lines
2.9 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/param.h>
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#include <errno.h>
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#include <libgen.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 *s)
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{
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void *ptr;
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size_t len;
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len = strlen(s) + 1;
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ptr = xmalloc(len);
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return (strncpy(ptr, s, len));
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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("zero size");
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if (SIZE_MAX / nmemb < size)
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fatalx("nmemb * size > SIZE_MAX");
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if ((ptr = calloc(nmemb, size)) == NULL)
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fatal("xcalloc failed");
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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("zero size");
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if ((ptr = malloc(size)) == NULL)
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fatal("xmalloc failed");
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return (ptr);
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}
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void *
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xrealloc(void *oldptr, size_t nmemb, size_t size)
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{
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size_t newsize = nmemb * size;
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void *newptr;
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if (newsize == 0)
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fatalx("zero size");
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if (SIZE_MAX / nmemb < size)
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fatalx("nmemb * size > SIZE_MAX");
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if ((newptr = realloc(oldptr, newsize)) == NULL)
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fatal("xrealloc failed");
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return (newptr);
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}
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void
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xfree(void *ptr)
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{
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if (ptr == NULL)
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fatalx("null pointer");
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free(ptr);
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}
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int printflike2
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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 failed");
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return (i);
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}
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int printflike3
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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("len > INT_MAX");
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i = vsnprintf(buf, len, fmt, ap);
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if (i < 0)
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fatal("vsnprintf failed");
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return (i);
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}
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