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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* 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
/*
* struniq - uniq a sorted argv
* 0 sentinel is neither expected nor restored
*
* Glenn Fowler
* David Korn
* AT&T Research
*/
#include <ast.h>
int
struniq(char** argv, int n)
{
register char** ao;
register char** an;
register char** ae;
ao = an = argv;
ae = ao + n;
while (++an < ae)
{
while (streq(*ao, *an))
if (++an >= ae)
return ao - argv + 1;
*++ao = *an;
}
return ao - argv + 1;
}
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