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Annotation of embedaddon/tmux/compat/asprintf.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (c) 2006 Nicholas Marriott <nicholas.marriott@gmail.com>
        !             3:  *
        !             4:  * Permission to use, copy, modify, and distribute this software for any
        !             5:  * purpose with or without fee is hereby granted, provided that the above
        !             6:  * copyright notice and this permission notice appear in all copies.
        !             7:  *
        !             8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !             9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            12:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
        !            13:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
        !            14:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            15:  */
        !            16: 
        !            17: #include <sys/types.h>
        !            18: 
        !            19: #include <stdarg.h>
        !            20: #include <stdio.h>
        !            21: #include <string.h>
        !            22: 
        !            23: #include "compat.h"
        !            24: 
        !            25: int
        !            26: asprintf(char **ret, const char *fmt, ...)
        !            27: {
        !            28:        va_list ap;
        !            29:        int     n;
        !            30: 
        !            31:        va_start(ap, fmt);
        !            32:        n = vasprintf(ret, fmt, ap);
        !            33:        va_end(ap);
        !            34: 
        !            35:        return (n);
        !            36: }
        !            37: 
        !            38: int
        !            39: vasprintf(char **ret, const char *fmt, va_list ap)
        !            40: {
        !            41:        int      n;
        !            42:        va_list  ap2;
        !            43: 
        !            44:        va_copy(ap2, ap);
        !            45: 
        !            46:        if ((n = vsnprintf(NULL, 0, fmt, ap)) < 0)
        !            47:                goto error;
        !            48: 
        !            49:        *ret = xmalloc(n + 1);
        !            50:        if ((n = vsnprintf(*ret, n + 1, fmt, ap2)) < 0) {
        !            51:                free(*ret);
        !            52:                goto error;
        !            53:        }
        !            54:        va_end(ap2);
        !            55: 
        !            56:        return (n);
        !            57: 
        !            58: error:
        !            59:        va_end(ap2);
        !            60:        *ret = NULL;
        !            61:        return (-1);
        !            62: }