1/* $NetBSD$ */ 2 3/* exclude.c -- exclude file names 4 Copyright 1992, 1993, 1994, 1997, 1999, 2000 Free Software Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; see the file COPYING. 18 If not, write to the Free Software Foundation, 19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21/* Written by Paul Eggert <eggert@twinsun.com> */ 22 23#if HAVE_CONFIG_H 24# include <config.h> 25#endif 26 27#include <errno.h> 28#ifndef errno 29extern int errno; 30#endif 31#include <exclude.h> 32#include <fnmatch.h> 33#include <stdio.h> 34#include <sys/types.h> 35 36void *xmalloc PARAMS ((size_t)); 37void *xrealloc PARAMS ((void *, size_t)); 38 39/* Keep track of excluded file name patterns. */ 40 41struct exclude 42 { 43 char const **exclude; 44 int exclude_alloc; 45 int exclude_count; 46 }; 47 48struct exclude * 49new_exclude (void) 50{ 51 struct exclude *ex = (struct exclude *) xmalloc (sizeof (struct exclude)); 52 ex->exclude_count = 0; 53 ex->exclude_alloc = 64; 54 ex->exclude = (char const **) xmalloc (ex->exclude_alloc * sizeof (char *)); 55 return ex; 56} 57 58int 59excluded_filename (struct exclude const *ex, char const *f, int options) 60{ 61 char const * const *exclude = ex->exclude; 62 int exclude_count = ex->exclude_count; 63 int i; 64 65 for (i = 0; i < exclude_count; i++) 66 if (fnmatch (exclude[i], f, options) == 0) 67 return 1; 68 69 return 0; 70} 71 72void 73add_exclude (struct exclude *ex, char const *pattern) 74{ 75 if (ex->exclude_alloc <= ex->exclude_count) 76 ex->exclude = (char const **) xrealloc (ex->exclude, 77 ((ex->exclude_alloc *= 2) 78 * sizeof (char *))); 79 80 ex->exclude[ex->exclude_count++] = pattern; 81} 82 83int 84add_exclude_file (void (*add_func) PARAMS ((struct exclude *, char const *)), 85 struct exclude *ex, char const *filename, char line_end) 86{ 87 int use_stdin = filename[0] == '-' && !filename[1]; 88 FILE *in; 89 char *buf; 90 char *p; 91 char const *pattern; 92 char const *lim; 93 size_t buf_alloc = 1024; 94 size_t buf_count = 0; 95 int c; 96 int e = 0; 97 98 if (use_stdin) 99 in = stdin; 100 else if (! (in = fopen (filename, "r"))) 101 return -1; 102 103 buf = xmalloc (buf_alloc); 104 105 while ((c = getc (in)) != EOF) 106 { 107 buf[buf_count++] = c; 108 if (buf_count == buf_alloc) 109 buf = xrealloc (buf, buf_alloc *= 2); 110 } 111 112 buf = xrealloc (buf, buf_count + 1); 113 114 if (ferror (in)) 115 e = errno; 116 117 if (!use_stdin && fclose (in) != 0) 118 e = errno; 119 120 for (pattern = p = buf, lim = buf + buf_count; p <= lim; p++) 121 if (p < lim ? *p == line_end : buf < p && p[-1]) 122 { 123 *p = '\0'; 124 (*add_func) (ex, pattern); 125 pattern = p + 1; 126 } 127 128 errno = e; 129 return e ? -1 : 0; 130} 131