1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2010 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Common Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.opensource.org/licenses/cpl1.0.txt *
11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #pragma prototyped
23
24 #include <ast.h>
25
26 /*
27 * path prefix strncmp(3) -- longest first!
28 */
29
30 int
strnpcmp(register const char * a,register const char * b,size_t n)31 strnpcmp(register const char* a, register const char* b, size_t n)
32 {
33 register const char* e;
34
35 e = a + n;
36 for (;;)
37 {
38 if (a >= e)
39 return 0;
40 if (*a != *b)
41 break;
42 if (!*a++)
43 return 0;
44 b++;
45 }
46 if (*a == 0 && *b == '/')
47 return 1;
48 if (*a == '/' && *b == 0)
49 return -1;
50 return (a < b) ? -1 : 1;
51 }
52