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Last change
on this file since dab89e28 was
89b2daf,
checked in by Anders Kaseorg <andersk@mit.edu>, 15 years ago
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Add const qualifiers for owl_regex *.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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-
Property mode set to
100644
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File size:
1.7 KB
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Rev | Line | |
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[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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[554a2b8] | 13 | char buff1[LINE]; |
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[e19eb97] | 14 | const char *ptr; |
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[7d4fbcd] | 15 | |
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| 16 | re->string=owl_strdup(string); |
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| 17 | |
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| 18 | ptr=string; |
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| 19 | re->negate=0; |
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| 20 | if (string[0]=='!') { |
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| 21 | ptr++; |
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| 22 | re->negate=1; |
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| 23 | } |
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| 24 | |
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| 25 | /* set the regex */ |
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| 26 | ret=regcomp(&(re->re), ptr, REG_EXTENDED|REG_ICASE); |
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| 27 | if (ret) { |
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| 28 | regerror(ret, NULL, buff1, LINE); |
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[554a2b8] | 29 | owl_function_makemsg("Error in regular expression: %s", buff1); |
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[7d4fbcd] | 30 | owl_free(re->string); |
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[a6560fe] | 31 | re->string=NULL; |
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[7d4fbcd] | 32 | return(-1); |
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| 33 | } |
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| 34 | |
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| 35 | return(0); |
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| 36 | } |
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| 37 | |
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[e19eb97] | 38 | int owl_regex_create_quoted(owl_regex *re, const char *string) |
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[bc08664] | 39 | { |
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| 40 | char *quoted; |
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| 41 | |
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| 42 | quoted=owl_text_quote(string, OWL_REGEX_QUOTECHARS, OWL_REGEX_QUOTEWITH); |
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| 43 | owl_regex_create(re, quoted); |
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| 44 | owl_free(quoted); |
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| 45 | return(0); |
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| 46 | } |
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| 47 | |
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[89b2daf] | 48 | int owl_regex_compare(const owl_regex *re, const char *string, int *start, int *end) |
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[e187445] | 49 | { |
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[7d4fbcd] | 50 | int out, ret; |
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[41c9a96] | 51 | regmatch_t match; |
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[7d4fbcd] | 52 | |
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| 53 | /* if the regex is not set we match */ |
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| 54 | if (!owl_regex_is_set(re)) { |
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| 55 | return(0); |
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| 56 | } |
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| 57 | |
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[41c9a96] | 58 | ret=regexec(&(re->re), string, 1, &match, 0); |
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[7d4fbcd] | 59 | out=ret; |
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| 60 | if (re->negate) { |
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| 61 | out=!out; |
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[41c9a96] | 62 | match.rm_so = 0; |
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| 63 | match.rm_eo = strlen(string); |
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[7d4fbcd] | 64 | } |
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[41c9a96] | 65 | if (start != NULL) *start = match.rm_so; |
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| 66 | if (end != NULL) *end = match.rm_eo; |
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[7d4fbcd] | 67 | return(out); |
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| 68 | } |
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| 69 | |
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[89b2daf] | 70 | int owl_regex_is_set(const owl_regex *re) |
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[e187445] | 71 | { |
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[7d4fbcd] | 72 | if (re->string) return(1); |
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| 73 | return(0); |
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| 74 | } |
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| 75 | |
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[89b2daf] | 76 | const char *owl_regex_get_string(const owl_regex *re) |
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[e187445] | 77 | { |
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[7d4fbcd] | 78 | return(re->string); |
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| 79 | } |
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| 80 | |
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[89b2daf] | 81 | void owl_regex_copy(const owl_regex *a, owl_regex *b) |
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[e187445] | 82 | { |
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[41c9a96] | 83 | owl_regex_create(b, a->string); |
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[7d4fbcd] | 84 | } |
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| 85 | |
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[e187445] | 86 | void owl_regex_free(owl_regex *re) |
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| 87 | { |
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[cb769bb] | 88 | if (re->string) { |
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| 89 | owl_free(re->string); |
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| 90 | regfree(&(re->re)); |
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| 91 | } |
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[7d4fbcd] | 92 | } |
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