More string and buffer functions.

[apps/madmutt.git] / lib-lib / rx.c

diff --git a/lib-lib/rx.c b/lib-lib/rx.c
index d89d234..58e943c 100644 (file)
--- a/lib-lib/rx.c
+++ b/lib-lib/rx.c
@@ -29,7 +29,8 @@ rx_t *rx_compile(const char *s, int flags)
     rx_t *pp = p_new(rx_t, 1);
 
     pp->pattern = m_strdup(s);
-    pp->rx = p_new(regex_t, 1);
+    pp->rx      = p_new(regex_t, 1);
+    pp->flags   = flags;
 
     if (REGCOMP(pp->rx, NONULL(s), flags) != 0) {
         rx_delete(&pp);
@@ -38,6 +39,14 @@ rx_t *rx_compile(const char *s, int flags)
     return pp;
 }
 
+rx_t *rx_dup(rx_t *r)
+{
+    rx_t *res = rx_compile(r->pattern, r->flags);
+    res->neg  = r->neg;
+    rx_set_template(res, r->tpl);
+    return res;
+}
+
 int rx_validate(const char *s, char *errbuf, ssize_t errlen)
 {
     regex_t re;
@@ -59,6 +68,8 @@ void rx_set_template(rx_t *rx, const char *tpl)
 
     m_strreplace(&rx->tpl, tpl);
     rx->nmatch = 0;
+    if (m_strisempty(rx->tpl))
+        return;
 
     while ((p = strchr(p, '%'))) {
         if (isdigit(*++p)) {