Add list_find function

2 files changed, 16 insertions, 0 deletions

diff --git a/src/list.c b/src/list.c
index 3682185..3c648bf 100644
--- a/src/list.c
+++ b/src/list.c
@@ -108,4 +108,14 @@ struct list *list_from_string(const char *string, char delim)
   return list;
 }
 
+int list_find(struct list *list, int (*cmp)(const void *, const void *), const void *key)
+{
+  for(size_t i = 0; i < list->len; ++i) {
+    if(!cmp(list->items[i], key)) {
+      return (int)i;
+    }
+  }
+  return -1;
+}
+
 /* vim:set ts=2 sts=2 sw=2 et: */
diff --git a/src/list.h b/src/list.h
index c74eb7f..bcc76e5 100644
--- a/src/list.h
+++ b/src/list.h
@@ -43,6 +43,12 @@ void list_insert(struct list *list, size_t index, void *item);
 
 struct list *list_from_string(const char *string, char delim);
 
+int list_find(
+    struct list *list,
+    int (*cmp)(const void *item, const void *key),
+    const void *key
+);
+
 #endif
 
 /* vim:set ts=2 sts=2 sw=2 et: */