From ef1fdb2e5c3659bb4aec224686a9349fa1d0159b Mon Sep 17 00:00:00 2001
From: Pierre Pronchery <khorben@defora.org>
Date: Tue, 24 Apr 2018 01:46:45 +0200
Subject: [PATCH] Add array_new_filter{,_swap}()

---
 include/System/array.h |  2 ++
 src/array.c            | 46 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/include/System/array.h b/include/System/array.h
index a24081f..3635fa2 100644
--- a/include/System/array.h
+++ b/include/System/array.h
@@ -67,6 +67,8 @@ typedef void (*ArrayForeachSwap)(void * data, void * value);
 
 /* functions */
 Array * array_new(size_t size);
+Array * array_new_filter(Array * array, ArrayFilter func, void * data);
+Array * array_new_filter_swap(Array * array, ArrayFilterSwap func, void * data);
 # define array_new_type(object) array_new(sizeof(type))
 void array_delete(Array * array);
 
diff --git a/src/array.c b/src/array.c
index 46e218a..aed5315 100644
--- a/src/array.c
+++ b/src/array.c
@@ -70,6 +70,52 @@ Array * array_new(size_t size)
 }
 
 
+/* array_new_filter */
+Array * array_new_filter(Array * array, ArrayFilter func, void * data)
+{
+	Array * a;
+	size_t i;
+	char * value;
+
+	if((a = array_new(array->size)) == NULL)
+		return NULL;
+	for(i = 0; i < array->count; i++)
+	{
+		value = array->value + (array->size * i);
+		if(func(value, data) == true)
+			if(array_append(a, value) != 0)
+			{
+				array_delete(a);
+				return NULL;
+			}
+	}
+	return a;
+}
+
+
+/* array_new_filter_swap */
+Array * array_new_filter_swap(Array * array, ArrayFilterSwap func, void * data)
+{
+	Array * a;
+	size_t i;
+	char * value;
+
+	if((a = array_new(array->size)) == NULL)
+		return NULL;
+	for(i = 0; i < array->count; i++)
+	{
+		value = array->value + (array->size * i);
+		if(func(data, value) == true)
+			if(array_append(a, value) != 0)
+			{
+				array_delete(a);
+				return NULL;
+			}
+	}
+	return a;
+}
+
+
 /* array_delete */
 void array_delete(Array * array)
 {