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/* Copyright (C) 1997 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gp_getnv.c,v 1.5 2002/06/16 05:48:55 lpd Exp $ */
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/* Standard implementation of gp_getenv */
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#include "stdio_.h"
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#include "string_.h"
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#include "gsmemory.h"
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#include "gstypes.h"
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#include "gp.h"
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/* Import the C getenv function. */
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extern char *getenv(const char *);
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/* Get the value of an environment variable. See gp.h for details. */
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int
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gp_getenv(const char *key, char *ptr, int *plen)
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{
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const char *str = getenv(key);
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if (str) {
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int len = strlen(str);
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if (len < *plen) {
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/* string fits */
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strcpy(ptr, str);
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*plen = len + 1;
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return 0;
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}
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/* string doesn't fit */
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*plen = len + 1;
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return -1;
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}
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/* missing key */
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if (*plen > 0)
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*ptr = 0;
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*plen = 1;
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return 1;
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}
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