[dab82f29] | 1 | /* Copyright (c) 2002,2003,2004,2009 James M. Kretchmar |
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| 2 | * |
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| 3 | * This file is part of Owl. |
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| 4 | * |
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| 5 | * Owl is free software: you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation, either version 3 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * Owl is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with Owl. If not, see <http://www.gnu.org/licenses/>. |
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| 17 | * |
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| 18 | * --------------------------------------------------------------- |
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| 19 | * |
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| 20 | * As of Owl version 2.1.12 there are patches contributed by |
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[fa00c5c] | 21 | * developers of the branched BarnOwl project, Copyright (c) |
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| 22 | * 2006-2009 The BarnOwl Developers. All rights reserved. |
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[dab82f29] | 23 | */ |
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| 24 | |
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[7d4fbcd] | 25 | #include <string.h> |
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| 26 | #include "owl.h" |
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| 27 | |
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[1aee7d9] | 28 | static const char fileIdent[] = "$Id$"; |
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| 29 | |
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[e187445] | 30 | void owl_regex_init(owl_regex *re) |
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| 31 | { |
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[7d4fbcd] | 32 | re->negate=0; |
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| 33 | re->string=NULL; |
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| 34 | } |
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| 35 | |
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[e187445] | 36 | int owl_regex_create(owl_regex *re, char *string) |
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| 37 | { |
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[7d4fbcd] | 38 | int ret; |
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[c4b45ce] | 39 | char buff1[LINE]; |
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[7d4fbcd] | 40 | char *ptr; |
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| 41 | |
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| 42 | re->string=owl_strdup(string); |
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| 43 | |
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| 44 | ptr=string; |
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| 45 | re->negate=0; |
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| 46 | if (string[0]=='!') { |
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| 47 | ptr++; |
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| 48 | re->negate=1; |
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| 49 | } |
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| 50 | |
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| 51 | /* set the regex */ |
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| 52 | ret=regcomp(&(re->re), ptr, REG_EXTENDED|REG_ICASE); |
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| 53 | if (ret) { |
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| 54 | regerror(ret, NULL, buff1, LINE); |
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[c4b45ce] | 55 | owl_function_makemsg("Error in regular expression: %s", buff1); |
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[7d4fbcd] | 56 | owl_free(re->string); |
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[a6560fe] | 57 | re->string=NULL; |
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[7d4fbcd] | 58 | return(-1); |
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| 59 | } |
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| 60 | |
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| 61 | return(0); |
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| 62 | } |
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| 63 | |
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[bc08664] | 64 | int owl_regex_create_quoted(owl_regex *re, char *string) |
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| 65 | { |
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| 66 | char *quoted; |
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| 67 | |
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| 68 | quoted=owl_text_quote(string, OWL_REGEX_QUOTECHARS, OWL_REGEX_QUOTEWITH); |
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| 69 | owl_regex_create(re, quoted); |
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| 70 | owl_free(quoted); |
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| 71 | return(0); |
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| 72 | } |
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| 73 | |
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[e187445] | 74 | int owl_regex_compare(owl_regex *re, char *string) |
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| 75 | { |
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[7d4fbcd] | 76 | int out, ret; |
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| 77 | |
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| 78 | /* if the regex is not set we match */ |
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| 79 | if (!owl_regex_is_set(re)) { |
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| 80 | return(0); |
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| 81 | } |
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| 82 | |
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| 83 | ret=regexec(&(re->re), string, 0, NULL, 0); |
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| 84 | out=ret; |
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| 85 | if (re->negate) { |
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| 86 | out=!out; |
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| 87 | } |
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| 88 | return(out); |
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| 89 | } |
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| 90 | |
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[e187445] | 91 | int owl_regex_is_set(owl_regex *re) |
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| 92 | { |
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[7d4fbcd] | 93 | if (re->string) return(1); |
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| 94 | return(0); |
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| 95 | } |
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| 96 | |
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[e187445] | 97 | char *owl_regex_get_string(owl_regex *re) |
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| 98 | { |
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[7d4fbcd] | 99 | return(re->string); |
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| 100 | } |
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| 101 | |
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[e187445] | 102 | void owl_regex_copy(owl_regex *a, owl_regex *b) |
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| 103 | { |
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[7d4fbcd] | 104 | b->negate=a->negate; |
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| 105 | b->string=owl_strdup(a->string); |
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| 106 | memcpy(&(b->re), &(a->re), sizeof(regex_t)); |
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| 107 | } |
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| 108 | |
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[e187445] | 109 | void owl_regex_free(owl_regex *re) |
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| 110 | { |
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[7d4fbcd] | 111 | if (re->string) owl_free(re->string); |
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| 112 | |
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| 113 | /* do we need to free the regular expression? */ |
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| 114 | } |
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