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att
GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/comp/getsubopt.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * Xopen 4.2 compatibility

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 */

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#include <ast.h>

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#undef	_lib_getsubopt	/* we can satisfy the api */

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#if _lib_getsubopt

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NoN(getsubopt)

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#else

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#undef	_BLD_ast	/* enable ast imports since we're user static */

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#include <error.h>

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extern int

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getsubopt(register char** op, char* const* tp, char** vp)

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{

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	register char*	b;

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	register char*	s;

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	register char*	v;

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	if (*(b = *op))

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	{

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		v = 0;

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		s = b;

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		for (;;)

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		{

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			switch (*s++)

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			{

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			case 0:

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				s--;

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				break;

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			case ',':

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				*(s - 1) = 0;

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				break;

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			case '=':

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				if (!v)

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				{

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					*(s - 1) = 0;

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					v = s;

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				}

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				continue;

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			default:

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				continue;

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			}

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			break;

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		}

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		*op = s;

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		*vp = v;

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		for (op = (char**)tp; *op; op++)

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			if (streq(b, *op))

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				return op - (char**)tp;

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	}

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	*vp = b;

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	return -1;

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}

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#endif

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