1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2009 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 * Glenn Fowler 25 * AT&T Bell Laboratories 26 */ 27 28 #include "univlib.h" 29 30 #ifdef UNIV_MAX 31 32 #include <ctype.h> 33 34 #endif 35 36 /* 37 * return external representation for symbolic link text of name in buf 38 * the link text string length is returned 39 */ 40 41 int 42 pathgetlink(const char* name, char* buf, int siz) 43 { 44 int n; 45 46 if ((n = readlink(name, buf, siz)) < 0) return(-1); 47 if (n >= siz) 48 { 49 errno = EINVAL; 50 return(-1); 51 } 52 buf[n] = 0; 53 #ifdef UNIV_MAX 54 if (isspace(*buf)) 55 { 56 register char* s; 57 register char* t; 58 register char* u; 59 register char* v; 60 int match = 0; 61 char tmp[PATH_MAX]; 62 63 s = buf; 64 t = tmp; 65 while (isalnum(*++s) || *s == '_' || *s == '.'); 66 if (*s++) 67 { 68 for (;;) 69 { 70 if (!*s || isspace(*s)) 71 { 72 if (match) 73 { 74 *t = 0; 75 n = t - tmp; 76 strcpy(buf, tmp); 77 } 78 break; 79 } 80 if (t >= &tmp[sizeof(tmp)]) break; 81 *t++ = *s++; 82 if (!match && t < &tmp[sizeof(tmp) - univ_size + 1]) for (n = 0; n < UNIV_MAX; n++) 83 { 84 if (*(v = s - 1) == *(u = univ_name[n])) 85 { 86 while (*u && *v++ == *u) u++; 87 if (!*u) 88 { 89 match = 1; 90 strcpy(t - 1, univ_cond); 91 t += univ_size - 1; 92 s = v; 93 break; 94 } 95 } 96 } 97 } 98 } 99 } 100 #endif 101 return(n); 102 } 103