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 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