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57 lines
2.7 KiB
C
57 lines
2.7 KiB
C
/****************************************************************************
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* Copyright (c) 1998,2000 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Thomas E. Dickey <dickey@clark.net> 1998 *
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****************************************************************************/
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/*
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* getenv_num.c -- obtain a number from the environment
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*/
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#include <curses.priv.h>
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MODULE_ID("$Id: getenv_num.c,v 1.3 2000/12/10 02:55:07 tom Exp $")
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NCURSES_EXPORT(int)
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_nc_getenv_num(const char *name)
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{
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char *dst = 0;
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char *src = getenv(name);
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long value;
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if ((src == 0)
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|| (value = strtol(src, &dst, 0)) < 0
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|| (dst == src)
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|| (*dst != '\0')
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|| (int) value < value)
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value = -1;
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return (int) value;
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}
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