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#include <ast.h>
1N/A#include <ctype.h>
1N/A
1N/A/*
1N/A * version strncmp(3)
1N/A */
1N/A
1N/Aint
1N/Astrnvcmp(register const char* a, register const char* b, size_t n)
1N/A{
1N/A register const char* ae;
1N/A register const char* be;
1N/A register unsigned long na;
1N/A register unsigned long nb;
1N/A
1N/A ae = a + n;
1N/A be = b + n;
1N/A for (;;)
1N/A {
1N/A if (a >= ae)
1N/A {
1N/A if (b >= be)
1N/A return 0;
1N/A return 1;
1N/A }
1N/A else if (b >= be)
1N/A return -1;
1N/A if (isdigit(*a) && isdigit(*b))
1N/A {
1N/A na = nb = 0;
1N/A while (a < ae && isdigit(*a))
1N/A na = na * 10 + *a++ - '0';
1N/A while (b < be && isdigit(*b))
1N/A nb = nb * 10 + *b++ - '0';
1N/A if (na < nb)
1N/A return -1;
1N/A if (na > nb)
1N/A return 1;
1N/A }
1N/A else if (*a != *b)
1N/A break;
1N/A else if (!*a)
1N/A return 0;
1N/A else
1N/A {
1N/A a++;
1N/A b++;
1N/A }
1N/A }
1N/A if (*a == 0)
1N/A return -1;
1N/A if (*b == 0)
1N/A return 1;
1N/A if (*a == '.')
1N/A return -1;
1N/A if (*b == '.')
1N/A return 1;
1N/A if (*a == '-')
1N/A return -1;
1N/A if (*b == '-')
1N/A return 1;
1N/A return *a < *b ? -1 : 1;
1N/A}