* stats() impl for filter/preg

src/filters/preg.c

@@ -19,6 +19,7 @@
 
 typedef struct f2b_regex_t {
   struct f2b_regex_t *next;
+  char pattern[PATTERN_MAX];
   int matches;
   regex_t regex;
 } f2b_regex_t;
@@ -28,6 +29,7 @@ struct _config {
   char error[256];
   bool icase;
   f2b_regex_t *regexps;
+  f2b_regex_t *statp;
 };
 
 cfg_t *
@@ -86,6 +88,7 @@ append(cfg_t *cfg, const char *pattern) {
   if (regcomp(&regex->regex, buf, flags) == 0) {
     regex->next = cfg->regexps;
     cfg->regexps = regex;
+    snprintf(regex->pattern, sizeof(regex->pattern), "%s", pattern);
     return true;
   }
 
@@ -101,6 +104,23 @@ ready(cfg_t *cfg) {
   return false;
 }
 
+bool
+stats(cfg_t *cfg, int *matches, char **pattern, bool reset) {
+  assert(cfg != NULL);
+
+  if (reset)
+    cfg->statp = cfg->regexps;
+
+  if (cfg->statp) {
+    *matches   = cfg->statp->matches;
+    *pattern   = cfg->statp->pattern;
+    cfg->statp = cfg->statp->next;
+    return true;
+  }
+
+  return false;
+}
+
 const char *
 error(cfg_t *cfg) {
   assert(cfg != NULL);