text-regex: add text_regex_nsub to get number of sub expressions

2 files changed, 7 insertions, 0 deletions

diff --git a/text-regex.c b/text-regex.c
index dd541d7..439c24a 100644
--- a/text-regex.c
+++ b/text-regex.c
@@ -23,6 +23,12 @@ int text_regex_compile(Regex *regex, const char *string, int cflags) {
 	return r;
 }
 
+size_t text_regex_nsub(Regex *r) {
+	if (!r)
+		return 0;
+	return r->regex.re_nsub;
+}
+
 void text_regex_free(Regex *r) {
 	if (!r)
 		return;
diff --git a/text-regex.h b/text-regex.h
index 3ace3de..1b2c382 100644
--- a/text-regex.h
+++ b/text-regex.h
@@ -9,6 +9,7 @@ typedef Filerange RegexMatch;
 
 Regex *text_regex_new(void);
 int text_regex_compile(Regex*, const char *pattern, int cflags);
+size_t text_regex_nsub(Regex*);
 void text_regex_free(Regex*);
 int text_regex_match(Regex*, const char *data, int eflags);
 int text_search_range_forward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);