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61 lines
2.0 KiB
61 lines
2.0 KiB
23 years ago
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/*
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** setenv.c: ISO C implementation
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** Copyright (c) 2003 Michael Schloh von Bennewitz <michael@schloh.com>
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** Copyright (c) 2003 Cable & Wireless <http://www.cw.com/de/>
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**
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** Permission to use, copy, modify, and distribute this software for
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** any purpose with or without fee is hereby granted, provided that
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** the above copyright notice and this permission notice appear in all
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** copies.
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**
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** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
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** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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** SUCH DAMAGE.
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**
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifndef HAVE_SETENV
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#include <stdlib.h> /* For putenv(3) and malloc(3) */
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#include <string.h> /* For strcpy(3) and strcat(3) */
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/*
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** Implements setenv C library function for platforms not including it
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**
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*/
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int setenv(const char *kszName, const char *kszValue, int nOverwrite)
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{
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char *szPair = NULL; /* String we will pass to putenv(3) */
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/* Allocate space for name, value, equals, and string terminator */
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szPair = malloc(strlen(kszName) + strlen(kszValue) + strlen("=") + 1);
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if (szPair == NULL) /* Memory error */
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return 1; /* Unsuccessful */
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/* Copy the incoming variables */
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strcpy(szPair, kszName);
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strcat(szPair, "=");
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strcat(szPair, kszValue);
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if (getenv(szPair) != NULL)
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putenv(szPair); /* Handoff */
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return 0; /* Success */
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}
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#endif /* !HAVE_SETENV */
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