binds: Add imv_binds_clear_key

2 files changed, 27 insertions, 0 deletions

diff --git a/src/binds.c b/src/binds.c
index 9e268b4..3408ad9 100644
--- a/src/binds.c
+++ b/src/binds.c
@@ -130,6 +130,30 @@ void imv_binds_clear(struct imv_binds *binds)
   init_bind_node(&binds->bind_tree);
 }
 
+void imv_binds_clear_key(struct imv_binds *binds, const struct list *keys)
+{
+  struct bind_node *node = &binds->bind_tree;
+
+  for(size_t i = 0; i < keys->len; ++i) {
+    /* Traverse the trie to find the right node for the input keys */
+    int child_index = list_find(node->suffixes, &compare_node_key, keys->items[i]);
+    if(child_index == -1) {
+      /* No such node, no more work to do */
+      return;
+    } else {
+      node = node->suffixes->items[child_index];
+    }
+  }
+
+  /* We've now found the correct node for the input */
+
+  /* Clear the commands for this node */
+  if(node->commands) {
+    list_deep_free(node->commands);
+    node->commands = NULL;
+  }
+}
+
 enum lookup_result {
   LOOKUP_PARTIAL,
   LOOKUP_INVALID,
diff --git a/src/binds.h b/src/binds.h
index a720fe1..5af7b5a 100644
--- a/src/binds.h
+++ b/src/binds.h
@@ -25,6 +25,9 @@ enum bind_result imv_binds_add(struct imv_binds *binds, const struct list *keys,
 /* Remove all key bindings */
 void imv_binds_clear(struct imv_binds *binds);
 
+/* Clear all bindings for a key*/
+void imv_binds_clear_key(struct imv_binds *binds, const struct list *keys);
+
 /* Fetch the list of keys pressed so far */
 const struct list *imv_bind_input_buffer(struct imv_binds *binds);