1 | #include <string.h> |
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2 | #include "owl.h" |
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3 | |
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4 | void owl_regex_init(owl_regex *re) |
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5 | { |
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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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10 | int owl_regex_create(owl_regex *re, const char *string) |
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11 | { |
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12 | int ret; |
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13 | char buff1[LINE]; |
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14 | const char *ptr; |
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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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29 | owl_function_makemsg("Error in regular expression: %s", buff1); |
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30 | owl_free(re->string); |
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31 | re->string=NULL; |
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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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38 | int owl_regex_create_quoted(owl_regex *re, const char *string) |
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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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48 | int owl_regex_compare(const owl_regex *re, const char *string, int *start, int *end) |
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49 | { |
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50 | int out, ret; |
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51 | regmatch_t match; |
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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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58 | ret=regexec(&(re->re), string, 1, &match, 0); |
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59 | out=ret; |
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60 | if (re->negate) { |
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61 | out=!out; |
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62 | match.rm_so = 0; |
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63 | match.rm_eo = strlen(string); |
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64 | } |
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65 | if (start != NULL) *start = match.rm_so; |
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66 | if (end != NULL) *end = match.rm_eo; |
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67 | return(out); |
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68 | } |
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69 | |
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70 | int owl_regex_is_set(const owl_regex *re) |
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71 | { |
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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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76 | const char *owl_regex_get_string(const owl_regex *re) |
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77 | { |
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78 | return(re->string); |
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79 | } |
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80 | |
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81 | void owl_regex_copy(const owl_regex *a, owl_regex *b) |
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82 | { |
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83 | owl_regex_create(b, a->string); |
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84 | } |
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85 | |
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86 | void owl_regex_free(owl_regex *re) |
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87 | { |
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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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92 | } |
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