bus: parse matches locally and allow registration of callbacks for them

This includes code to parse and split up match strings which will also
be useful to calculate bloom filter masks when the time comes.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/shared/util.c b/src/shared/util.c
index 873c95820a..760013c1fb 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -5855,3 +5855,20 @@ char *strrep(const char *s, unsigned n) {
         *p = 0;
         return r;
 }
+
+void* greedy_realloc(void **p, size_t *allocated, size_t need) {
+        size_t a;
+        void *q;
+
+        if (*allocated >= need)
+                return *p;
+
+        a = MAX(64, need * 2);
+        q = realloc(*p, a);
+        if (!q)
+                return NULL;
+
+        *p = q;
+        *allocated = a;
+        return q;
+}