[7d4fbcd] | 1 | #include <string.h> |
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| 2 | #include "owl.h" |
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| 3 | |
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[e187445] | 4 | void owl_regex_init(owl_regex *re) |
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| 5 | { |
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[7d4fbcd] | 6 | re->negate=0; |
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| 7 | re->string=NULL; |
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| 8 | } |
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| 9 | |
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[e19eb97] | 10 | int owl_regex_create(owl_regex *re, const char *string) |
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[e187445] | 11 | { |
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[7d4fbcd] | 12 | int ret; |
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[c40d11a] | 13 | size_t errbuf_size; |
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| 14 | char *errbuf; |
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[e19eb97] | 15 | const char *ptr; |
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[7d4fbcd] | 16 | |
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[d4927a7] | 17 | re->string=g_strdup(string); |
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[7d4fbcd] | 18 | |
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| 19 | ptr=string; |
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| 20 | re->negate=0; |
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| 21 | if (string[0]=='!') { |
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| 22 | ptr++; |
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| 23 | re->negate=1; |
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| 24 | } |
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| 25 | |
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| 26 | /* set the regex */ |
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| 27 | ret=regcomp(&(re->re), ptr, REG_EXTENDED|REG_ICASE); |
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| 28 | if (ret) { |
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[c40d11a] | 29 | errbuf_size = regerror(ret, NULL, NULL, 0); |
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| 30 | errbuf = g_new(char, errbuf_size); |
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| 31 | regerror(ret, NULL, errbuf, errbuf_size); |
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| 32 | owl_function_error("Error in regular expression: %s", errbuf); |
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| 33 | g_free(errbuf); |
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[ddbbcffa] | 34 | g_free(re->string); |
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[a6560fe] | 35 | re->string=NULL; |
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[7d4fbcd] | 36 | return(-1); |
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| 37 | } |
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| 38 | |
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| 39 | return(0); |
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| 40 | } |
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| 41 | |
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[e19eb97] | 42 | int owl_regex_create_quoted(owl_regex *re, const char *string) |
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[bc08664] | 43 | { |
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| 44 | char *quoted; |
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[d427f08] | 45 | int ret; |
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[bc08664] | 46 | |
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[d427f08] | 47 | quoted = owl_text_quote(string, OWL_REGEX_QUOTECHARS, OWL_REGEX_QUOTEWITH); |
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| 48 | ret = owl_regex_create(re, quoted); |
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[ddbbcffa] | 49 | g_free(quoted); |
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[d427f08] | 50 | return ret; |
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[bc08664] | 51 | } |
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| 52 | |
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[89b2daf] | 53 | int owl_regex_compare(const owl_regex *re, const char *string, int *start, int *end) |
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[e187445] | 54 | { |
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[7d4fbcd] | 55 | int out, ret; |
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[41c9a96] | 56 | regmatch_t match; |
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[7d4fbcd] | 57 | |
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| 58 | /* if the regex is not set we match */ |
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| 59 | if (!owl_regex_is_set(re)) { |
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| 60 | return(0); |
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| 61 | } |
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| 62 | |
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[41c9a96] | 63 | ret=regexec(&(re->re), string, 1, &match, 0); |
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[7d4fbcd] | 64 | out=ret; |
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| 65 | if (re->negate) { |
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| 66 | out=!out; |
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[41c9a96] | 67 | match.rm_so = 0; |
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| 68 | match.rm_eo = strlen(string); |
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[7d4fbcd] | 69 | } |
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[41c9a96] | 70 | if (start != NULL) *start = match.rm_so; |
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| 71 | if (end != NULL) *end = match.rm_eo; |
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[7d4fbcd] | 72 | return(out); |
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| 73 | } |
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| 74 | |
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[89b2daf] | 75 | int owl_regex_is_set(const owl_regex *re) |
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[e187445] | 76 | { |
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[7d4fbcd] | 77 | if (re->string) return(1); |
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| 78 | return(0); |
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| 79 | } |
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| 80 | |
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[89b2daf] | 81 | const char *owl_regex_get_string(const owl_regex *re) |
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[e187445] | 82 | { |
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[7d4fbcd] | 83 | return(re->string); |
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| 84 | } |
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| 85 | |
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[89b2daf] | 86 | void owl_regex_copy(const owl_regex *a, owl_regex *b) |
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[e187445] | 87 | { |
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[41c9a96] | 88 | owl_regex_create(b, a->string); |
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[7d4fbcd] | 89 | } |
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| 90 | |
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[5cbc929] | 91 | void owl_regex_cleanup(owl_regex *re) |
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[e187445] | 92 | { |
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[cb769bb] | 93 | if (re->string) { |
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[ddbbcffa] | 94 | g_free(re->string); |
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[cb769bb] | 95 | regfree(&(re->re)); |
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| 96 | } |
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[7d4fbcd] | 97 | } |
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