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#include <string.h>
#include "owl.h"
void owl_regex_init(owl_regex *re)
{
re->negate=0;
re->string=NULL;
}
int owl_regex_create(owl_regex *re, const char *string)
{
int ret;
char buff1[LINE];
const char *ptr;
re->string=owl_strdup(string);
ptr=string;
re->negate=0;
if (string[0]=='!') {
ptr++;
re->negate=1;
}
/* set the regex */
ret=regcomp(&(re->re), ptr, REG_EXTENDED|REG_ICASE);
if (ret) {
regerror(ret, NULL, buff1, LINE);
owl_function_makemsg("Error in regular expression: %s", buff1);
owl_free(re->string);
re->string=NULL;
return(-1);
}
return(0);
}
int owl_regex_create_quoted(owl_regex *re, const char *string)
{
char *quoted;
quoted=owl_text_quote(string, OWL_REGEX_QUOTECHARS, OWL_REGEX_QUOTEWITH);
owl_regex_create(re, quoted);
owl_free(quoted);
return(0);
}
int owl_regex_compare(const owl_regex *re, const char *string, int *start, int *end)
{
int out, ret;
regmatch_t match;
/* if the regex is not set we match */
if (!owl_regex_is_set(re)) {
return(0);
}
ret=regexec(&(re->re), string, 1, &match, 0);
out=ret;
if (re->negate) {
out=!out;
match.rm_so = 0;
match.rm_eo = strlen(string);
}
if (start != NULL) *start = match.rm_so;
if (end != NULL) *end = match.rm_eo;
return(out);
}
int owl_regex_is_set(const owl_regex *re)
{
if (re->string) return(1);
return(0);
}
const char *owl_regex_get_string(const owl_regex *re)
{
return(re->string);
}
void owl_regex_copy(const owl_regex *a, owl_regex *b)
{
owl_regex_create(b, a->string);
}
void owl_regex_cleanup(owl_regex *re)
{
if (re->string) {
owl_free(re->string);
regfree(&(re->re));
}
}
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