Add a function that allows unwanted entries in an object_array to be
removed. This encapsulation is a step towards giving object_array
ownership of its entries' name memory.
Signed-off-by: Michael Haggerty <mhagger@xxxxxxxxxxxx>
---
object.c | 16 ++++++++++++++++
object.h | 11 +++++++++++
2 files changed, 27 insertions(+)
diff --git a/object.c b/object.c
index 20703f5..fcd4a82 100644
--- a/object.c
+++ b/object.c
@@ -278,6 +278,22 @@ void add_object_array_with_mode(struct object *obj, const char *name, struct obj
array->nr = ++nr;
}
+void object_array_filter(struct object_array *array,
+ object_array_each_func_t want, void *cb_data)
+{
+ unsigned nr = array->nr, src, dst;
+ struct object_array_entry *objects = array->objects;
+
+ for (src = dst = 0; src < nr; src++) {
+ if (want(&objects[src], cb_data)) {
+ if (src != dst)
+ objects[dst] = objects[src];
+ dst++;
+ }
+ }
+ array->nr = dst;
+}
+
void object_array_remove_duplicates(struct object_array *array)
{
unsigned int ref, src, dst;
diff --git a/object.h b/object.h
index 97d384b..0d39ff4 100644
--- a/object.h
+++ b/object.h
@@ -85,6 +85,17 @@ int object_list_contains(struct object_list *list, struct object *obj);
/* Object array handling .. */
void add_object_array(struct object *obj, const char *name, struct object_array *array);
void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode);
+
+typedef int (*object_array_each_func_t)(struct object_array_entry *, void *);
+
+/*
+ * Apply want to each entry in array, retaining only the entries for
+ * which the function returns true. Preserve the order of the entries
+ * that are retained.
+ */
+void object_array_filter(struct object_array *array,
+ object_array_each_func_t want, void *cb_data);
+
void object_array_remove_duplicates(struct object_array *);
void clear_object_flags(unsigned flags);
--
1.8.2.3
--
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