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Annotation of embedaddon/tmux/compat/setenv.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (c) 2010 Dagobert Michelsen
                      3:  * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     14:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     15:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: 
                     18: #include <stdlib.h>
                     19: #include <string.h>
                     20: 
                     21: #include "compat.h"
                     22: 
                     23: int
                     24: setenv(const char *name, const char *value, unused int overwrite)
                     25: {
                     26:        char    *newval;
                     27: 
                     28:        xasprintf(&newval, "%s=%s", name, value);
                     29:        return (putenv(newval));
                     30: }
                     31: 
                     32: int
                     33: unsetenv(const char *name)
                     34: {
                     35:        char  **envptr;
                     36:        int     namelen;
                     37: 
                     38:        namelen = strlen(name);
                     39:        for (envptr = environ; *envptr != NULL; envptr++) {
                     40:                if (strncmp(name, *envptr, namelen) == 0 &&
                     41:                    ((*envptr)[namelen] == '=' || (*envptr)[namelen] == '\0'))
                     42:                        break;
                     43:        }
                     44:        for (; *envptr != NULL; envptr++)
                     45:                *envptr = *(envptr + 1);
                     46:        return (0);
                     47: }