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#ifdef UWSGI_PCRE
#include "uwsgi.h"
int uwsgi_regexp_build(char *re, pcre **pattern, pcre_extra **pattern_extra) {
const char *errstr;
int erroff;
*pattern = pcre_compile( (const char *)re, 0, &errstr, &erroff, NULL);
if (!*pattern) {
uwsgi_log("pcre error: %s at offset %d\n", errstr, erroff);
return -1;
}
*pattern_extra = (pcre_extra *) pcre_study((const pcre*)*pattern, 0, &errstr);
if (*pattern_extra == NULL && errstr != NULL) {
pcre_free(*pattern);
uwsgi_log("pcre (study) error: %s\n", errstr);
return -1;
}
return 0;
}
int uwsgi_regexp_match(pcre *pattern, pcre_extra *pattern_extra, char *subject, int length) {
return pcre_exec((const pcre*)pattern, (const pcre_extra *)pattern_extra, subject, length, 0, 0, NULL, 0 );
}
int uwsgi_regexp_match_ovec(pcre *pattern, pcre_extra *pattern_extra, char *subject, int length, int *ovec, int n ) {
if (n > 0) {
return pcre_exec((const pcre*)pattern, (const pcre_extra *)pattern_extra, subject, length, 0, 0, ovec, (n+1)*3 );
}
return pcre_exec((const pcre*)pattern, (const pcre_extra *)pattern_extra, subject, length, 0, 0, NULL, 0 );
}
int uwsgi_regexp_ovector(pcre *pattern, pcre_extra *pattern_extra) {
int n;
if (pcre_fullinfo((const pcre*)pattern, (const pcre_extra *)pattern_extra, PCRE_INFO_CAPTURECOUNT, &n))
return 0;
return n;
}
char *uwsgi_regexp_apply_ovec(char *src, int src_n, char *dst, int dst_n, int *ovector, int n) {
int i;
int dollar = 0;
char *res = uwsgi_malloc( dst_n + (src_n * n) + 1);
char *ptr = res;
for(i=0;i<dst_n;i++) {
if (dollar) {
if (isdigit((int)dst[i])) {
int pos = (dst[i] - 48);
if (pos <= n) {
pos = pos * 2;
memcpy(ptr, src + ovector[pos], ovector[pos+1]-ovector[pos]);
ptr+=ovector[pos+1]-ovector[pos];
}
}
else {
*ptr++= dst[i];
}
dollar = 0;
}
else {
if (dst[i] == '$') {
dollar = 1;
}
else {
*ptr++= dst[i];
}
}
}
*ptr++= 0;
return res;
}
#endif
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