[7d4fbcd] | 1 | #include "owl.h" |
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| 2 | |
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[23fddad] | 3 | owl_filter *owl_filter_new_fromstring(const char *name, const char *string) |
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[e187445] | 4 | { |
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[23fddad] | 5 | owl_filter *f; |
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[7d4fbcd] | 6 | char **argv; |
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[23fddad] | 7 | int argc; |
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[7d4fbcd] | 8 | |
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[23fddad] | 9 | argv = owl_parseline(string, &argc); |
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| 10 | f = owl_filter_new(name, argc, strs(argv)); |
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[e56303f] | 11 | g_strfreev(argv); |
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[23fddad] | 12 | |
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| 13 | return f; |
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[7d4fbcd] | 14 | } |
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| 15 | |
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[23fddad] | 16 | owl_filter *owl_filter_new(const char *name, int argc, const char *const *argv) |
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[e187445] | 17 | { |
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[23fddad] | 18 | owl_filter *f; |
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| 19 | |
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[96828e4] | 20 | f = g_new(owl_filter, 1); |
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[23fddad] | 21 | |
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[d4927a7] | 22 | f->name=g_strdup(name); |
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[8fa9562] | 23 | f->fgcolor=OWL_COLOR_DEFAULT; |
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| 24 | f->bgcolor=OWL_COLOR_DEFAULT; |
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[cb769bb] | 25 | |
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[7d4fbcd] | 26 | /* first take arguments that have to come first */ |
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| 27 | /* set the color */ |
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[8fa9562] | 28 | while ( argc>=2 && ( !strcmp(argv[0], "-c") || |
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| 29 | !strcmp(argv[0], "-b") ) ) { |
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[601733d] | 30 | if (owl_util_string_to_color(argv[1])==OWL_COLOR_INVALID) { |
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[12c35df] | 31 | owl_function_error("The color '%s' is not available, using default.", argv[1]); |
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| 32 | } else { |
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[8fa9562] | 33 | switch (argv[0][1]) { |
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| 34 | case 'c': |
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| 35 | f->fgcolor=owl_util_string_to_color(argv[1]); |
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| 36 | break; |
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| 37 | case 'b': |
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| 38 | f->bgcolor=owl_util_string_to_color(argv[1]); |
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| 39 | break; |
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| 40 | } |
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[12c35df] | 41 | } |
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[7d4fbcd] | 42 | argc-=2; |
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| 43 | argv+=2; |
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| 44 | } |
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| 45 | |
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[23fddad] | 46 | if (!(f->root = owl_filter_parse_expression(argc, argv, NULL))) { |
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| 47 | owl_filter_delete(f); |
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| 48 | return NULL; |
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| 49 | } |
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[7d4fbcd] | 50 | |
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[cb769bb] | 51 | /* Now check for recursion. */ |
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[40458b9] | 52 | if (owl_filter_is_toodeep(f)) { |
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[9711a6e] | 53 | owl_function_error("Filter loop!"); |
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[23fddad] | 54 | owl_filter_delete(f); |
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| 55 | return NULL; |
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[7d4fbcd] | 56 | } |
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[cb769bb] | 57 | |
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[23fddad] | 58 | return f; |
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[7d4fbcd] | 59 | } |
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| 60 | |
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[cb769bb] | 61 | |
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| 62 | /* A primitive expression is one without any toplevel ``and'' or ``or''s*/ |
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| 63 | |
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[e19eb97] | 64 | static owl_filterelement * owl_filter_parse_primitive_expression(int argc, const char *const *argv, int *next) |
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[cb769bb] | 65 | { |
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[ad15610] | 66 | owl_filterelement *fe, *op; |
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| 67 | int i = 0, skip; |
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[cb769bb] | 68 | |
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[ad15610] | 69 | if(!argc) return NULL; |
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[cb769bb] | 70 | |
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[96828e4] | 71 | fe = g_new(owl_filterelement, 1); |
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[cb769bb] | 72 | owl_filterelement_create(fe); |
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| 73 | |
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| 74 | if(!strcasecmp(argv[i], "(")) { |
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| 75 | i++; |
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| 76 | op = owl_filter_parse_expression(argc-i, argv+i, &skip); |
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| 77 | if(!op) goto err; |
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| 78 | i += skip; |
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[d791cdb] | 79 | if(i >= argc) goto err; |
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[cb769bb] | 80 | if(strcasecmp(argv[i++], ")")) goto err; |
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| 81 | owl_filterelement_create_group(fe, op); |
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| 82 | } else if(!strcasecmp(argv[i], "not")) { |
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| 83 | i++; |
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| 84 | op = owl_filter_parse_primitive_expression(argc-i, argv+i, &skip); |
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| 85 | if(!op) goto err; |
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| 86 | i += skip; |
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| 87 | owl_filterelement_create_not(fe, op); |
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| 88 | } else if(!strcasecmp(argv[i], "true")) { |
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| 89 | i++; |
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| 90 | owl_filterelement_create_true(fe); |
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| 91 | } else if(!strcasecmp(argv[i], "false")) { |
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| 92 | i++; |
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| 93 | owl_filterelement_create_false(fe); |
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| 94 | } else { |
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| 95 | if(argc == 1) goto err; |
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| 96 | if(!strcasecmp(*argv, "filter")) { |
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| 97 | owl_filterelement_create_filter(fe, *(argv+1)); |
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| 98 | } else if(!strcasecmp(*argv, "perl")) { |
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| 99 | owl_filterelement_create_perl(fe, *(argv+1)); |
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| 100 | } else { |
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[e6a4dd5] | 101 | if(owl_filterelement_create_re(fe, *argv, *(argv+1))) { |
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| 102 | goto err; |
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| 103 | } |
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[cb769bb] | 104 | } |
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| 105 | i += 2; |
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| 106 | } |
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| 107 | |
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| 108 | if(next) { |
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| 109 | *next = i; |
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| 110 | } else if(i != argc) { |
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| 111 | goto err; |
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| 112 | } |
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| 113 | return fe; |
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| 114 | err: |
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[75c7e8e] | 115 | owl_filterelement_cleanup(fe); |
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[ddbbcffa] | 116 | g_free(fe); |
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[cb769bb] | 117 | return NULL; |
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| 118 | } |
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| 119 | |
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[e19eb97] | 120 | owl_filterelement * owl_filter_parse_expression(int argc, const char *const *argv, int *next) |
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[cb769bb] | 121 | { |
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| 122 | int i = 0, skip; |
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[ad15610] | 123 | owl_filterelement * op1 = NULL, * op2 = NULL, *tmp; |
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[cb769bb] | 124 | |
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| 125 | op1 = owl_filter_parse_primitive_expression(argc-i, argv+i, &skip); |
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| 126 | i += skip; |
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| 127 | if(!op1) goto err; |
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| 128 | |
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| 129 | while(i < argc) { |
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| 130 | if(strcasecmp(argv[i], "and") && |
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| 131 | strcasecmp(argv[i], "or")) break; |
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| 132 | op2 = owl_filter_parse_primitive_expression(argc-i-1, argv+i+1, &skip); |
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| 133 | if(!op2) goto err; |
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[96828e4] | 134 | tmp = g_new(owl_filterelement, 1); |
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[cb769bb] | 135 | if(!strcasecmp(argv[i], "and")) { |
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| 136 | owl_filterelement_create_and(tmp, op1, op2); |
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| 137 | } else { |
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| 138 | owl_filterelement_create_or(tmp, op1, op2); |
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| 139 | } |
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| 140 | op1 = tmp; |
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| 141 | op2 = NULL; |
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| 142 | i += skip+1; |
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| 143 | } |
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| 144 | |
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| 145 | if(next) { |
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| 146 | *next = i; |
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| 147 | } else if(i != argc) { |
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| 148 | goto err; |
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| 149 | } |
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| 150 | return op1; |
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| 151 | err: |
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| 152 | if(op1) { |
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[75c7e8e] | 153 | owl_filterelement_cleanup(op1); |
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[ddbbcffa] | 154 | g_free(op1); |
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[cb769bb] | 155 | } |
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| 156 | return NULL; |
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| 157 | } |
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| 158 | |
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[4542047] | 159 | const char *owl_filter_get_name(const owl_filter *f) |
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[e187445] | 160 | { |
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[7d4fbcd] | 161 | return(f->name); |
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| 162 | } |
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| 163 | |
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[3cc4bfc] | 164 | SV *owl_filter_to_sv(const owl_filter *f) |
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| 165 | { |
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| 166 | return owl_new_sv(owl_filter_get_name(f)); |
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| 167 | } |
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| 168 | |
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[8fa9562] | 169 | void owl_filter_set_fgcolor(owl_filter *f, int color) |
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[e187445] | 170 | { |
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[8fa9562] | 171 | f->fgcolor=color; |
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[7d4fbcd] | 172 | } |
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| 173 | |
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[4542047] | 174 | int owl_filter_get_fgcolor(const owl_filter *f) |
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[e187445] | 175 | { |
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[8fa9562] | 176 | return(f->fgcolor); |
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| 177 | } |
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| 178 | |
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| 179 | void owl_filter_set_bgcolor(owl_filter *f, int color) |
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| 180 | { |
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| 181 | f->bgcolor=color; |
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| 182 | } |
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| 183 | |
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[4542047] | 184 | int owl_filter_get_bgcolor(const owl_filter *f) |
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[8fa9562] | 185 | { |
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| 186 | return(f->bgcolor); |
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[7d4fbcd] | 187 | } |
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| 188 | |
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[15b34fd] | 189 | /* return 1 if the message matches the given filter, otherwise |
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| 190 | * return 0. |
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| 191 | */ |
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[4542047] | 192 | int owl_filter_message_match(const owl_filter *f, const owl_message *m) |
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[e187445] | 193 | { |
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[ad15610] | 194 | int ret; |
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[cb769bb] | 195 | if(!f->root) return 0; |
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[ad15610] | 196 | ret = owl_filterelement_match(f->root, m); |
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[cb769bb] | 197 | return ret; |
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[7d4fbcd] | 198 | } |
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| 199 | |
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| 200 | |
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[2560529] | 201 | CALLER_OWN char *owl_filter_print(const owl_filter *f) |
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[e187445] | 202 | { |
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[cdc6ff1] | 203 | GString *out = g_string_new(""); |
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[446aa2b] | 204 | |
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[8fa9562] | 205 | if (f->fgcolor!=OWL_COLOR_DEFAULT) { |
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[0504f63] | 206 | g_string_append(out, "-c "); |
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[c2c5c77] | 207 | if (f->fgcolor < 8) { |
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[0504f63] | 208 | g_string_append(out, owl_util_color_to_string(f->fgcolor)); |
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[c2c5c77] | 209 | } |
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| 210 | else { |
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[0504f63] | 211 | g_string_append_printf(out, "%i",f->fgcolor); |
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[c2c5c77] | 212 | } |
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[0504f63] | 213 | g_string_append(out, " "); |
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[8fa9562] | 214 | } |
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| 215 | if (f->bgcolor!=OWL_COLOR_DEFAULT) { |
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[0504f63] | 216 | g_string_append(out, "-b "); |
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[c2c5c77] | 217 | if (f->bgcolor < 8) { |
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[0504f63] | 218 | g_string_append(out, owl_util_color_to_string(f->bgcolor)); |
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[c2c5c77] | 219 | } |
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| 220 | else { |
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[30781f6] | 221 | g_string_append_printf(out, "%i",f->bgcolor); |
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[c2c5c77] | 222 | } |
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[0504f63] | 223 | g_string_append(out, " "); |
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| 224 | } |
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| 225 | if(f->root) { |
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| 226 | owl_filterelement_print(f->root, out); |
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| 227 | g_string_append(out, "\n"); |
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[446aa2b] | 228 | } |
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[0504f63] | 229 | |
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| 230 | return g_string_free(out, 0); |
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[7d4fbcd] | 231 | } |
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| 232 | |
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[40458b9] | 233 | /* Return 1 if the filters 'a' and 'b' are equivalent, 0 otherwise */ |
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[4542047] | 234 | int owl_filter_equiv(const owl_filter *a, const owl_filter *b) |
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[e187445] | 235 | { |
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[0504f63] | 236 | char *buffa, *buffb; |
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| 237 | int ret; |
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[7d4fbcd] | 238 | |
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[0504f63] | 239 | buffa = owl_filter_print(a); |
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| 240 | buffb = owl_filter_print(b); |
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[7d4fbcd] | 241 | |
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[0504f63] | 242 | ret = !strcmp(buffa, buffb); |
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[cdc6ff1] | 243 | ret = ret && !strcmp(owl_filter_get_name(a), |
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| 244 | owl_filter_get_name(b)); |
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[0504f63] | 245 | |
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[ddbbcffa] | 246 | g_free(buffa); |
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| 247 | g_free(buffb); |
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[0504f63] | 248 | |
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| 249 | return ret; |
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[7d4fbcd] | 250 | } |
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| 251 | |
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[cb769bb] | 252 | |
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[4542047] | 253 | int owl_filter_is_toodeep(const owl_filter *f) |
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[40458b9] | 254 | { |
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[cb769bb] | 255 | return owl_filterelement_is_toodeep(f, f->root); |
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[40458b9] | 256 | } |
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| 257 | |
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[23fddad] | 258 | void owl_filter_delete(owl_filter *f) |
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[40458b9] | 259 | { |
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[23fddad] | 260 | if (f == NULL) |
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| 261 | return; |
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| 262 | if (f->root) { |
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[75c7e8e] | 263 | owl_filterelement_cleanup(f->root); |
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[ddbbcffa] | 264 | g_free(f->root); |
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[40458b9] | 265 | } |
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[23fddad] | 266 | if (f->name) |
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[ddbbcffa] | 267 | g_free(f->name); |
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| 268 | g_free(f); |
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[cb769bb] | 269 | } |
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