1N/A/***********************************************************************
1N/A* *
1N/A* This software is part of the ast package *
1N/A* Copyright (c) 1985-2011 AT&T Intellectual Property *
1N/A* and is licensed under the *
1N/A* Common Public License, Version 1.0 *
1N/A* by AT&T Intellectual Property *
1N/A* *
1N/A* A copy of the License is available at *
1N/A* http://www.opensource.org/licenses/cpl1.0.txt *
1N/A* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
1N/A* *
1N/A* Information and Software Systems Research *
1N/A* AT&T Research *
1N/A* Florham Park NJ *
1N/A* *
1N/A* Glenn Fowler <gsf@research.att.com> *
1N/A* David Korn <dgk@research.att.com> *
1N/A* Phong Vo <kpv@research.att.com> *
1N/A* *
1N/A***********************************************************************/
1N/A#pragma prototyped
1N/A/*
1N/A * struniq - uniq a sorted argv
1N/A * 0 sentinel is neither expected nor restored
1N/A *
1N/A * Glenn Fowler
1N/A * David Korn
1N/A * AT&T Research
1N/A */
1N/A
1N/A#include <ast.h>
1N/A
1N/Aint
1N/Astruniq(char** argv, int n)
1N/A{
1N/A register char** ao;
1N/A register char** an;
1N/A register char** ae;
1N/A
1N/A ao = an = argv;
1N/A ae = ao + n;
1N/A while (++an < ae)
1N/A {
1N/A while (streq(*ao, *an))
1N/A if (++an >= ae)
1N/A return ao - argv + 1;
1N/A *++ao = *an;
1N/A }
1N/A return ao - argv + 1;
1N/A}