getsubopt.c revision da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2007 AT&T Knowledge Ventures *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Knowledge Ventures *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Xopen 4.2 compatibility
*/
#include <ast_lib.h>
#undef _lib_getsubopt /* we can satisfy the api */
#if _lib_getsubopt
#include <ast.h>
NoN(getsubopt)
#else
#define getsubopt ______getsubopt
#include <ast.h>
#undef getsubopt
#include <error.h>
#if defined(__EXPORT__)
#define extern __EXPORT__
#endif
extern int
getsubopt(register char** op, char* const* tp, char** vp)
{
register char* b;
register char* s;
register char* v;
if (*(b = *op))
{
v = 0;
s = b;
for (;;)
{
switch (*s++)
{
case 0:
s--;
break;
case ',':
*(s - 1) = 0;
break;
case '=':
if (!v)
{
*(s - 1) = 0;
v = s;
}
continue;
default:
continue;
}
break;
}
*op = s;
*vp = v;
for (op = (char**)tp; *op; op++)
if (streq(b, *op))
return op - (char**)tp;
}
*vp = b;
return -1;
}
#endif