From e48ccf42cac2b1ba261b3e564c4d4abc8aa060d1 Mon Sep 17 00:00:00 2001
From: iska <iska.gp@gmail.com>
Date: Sun, 8 Jan 2017 09:31:37 +0100
Subject: [PATCH] Add HTML Node deep clone implementation

---
 Sources/HTMLNode.m         | 15 +++++++++++++++
 Sources/include/HTMLNode.h |  8 ++++++++
 2 files changed, 23 insertions(+)

diff --git a/Sources/HTMLNode.m b/Sources/HTMLNode.m
index d188bb0..e1c74c3 100644
--- a/Sources/HTMLNode.m
+++ b/Sources/HTMLNode.m
@@ -668,6 +668,21 @@ NS_INLINE void CheckInvalidCombination(HTMLNode *parent, HTMLNode *node, NSStrin
 
 #endif
 
+#pragma mark - Clone
+
+- (instancetype)cloneNodeDeep:(BOOL)deep
+{
+	HTMLNode *copy = [self copy];
+
+	if (deep) {
+		for (HTMLNode *child in self.childNodes) {
+			[copy appendNode:[child cloneNodeDeep:YES]];
+		}
+	}
+
+	return copy;
+}
+
 #pragma mark - NSCopying
 
 - (id)copyWithZone:(NSZone *)zone
diff --git a/Sources/include/HTMLNode.h b/Sources/include/HTMLNode.h
index 5e94f2e..c9ca332 100644
--- a/Sources/include/HTMLNode.h
+++ b/Sources/include/HTMLNode.h
@@ -186,6 +186,14 @@ typedef NS_OPTIONS(unsigned short, HTMLDocumentPosition)
  */
 - (BOOL)isEmpty;
 
+/**
+ Clones this node.
+
+ @param deep If `YES` then also clones child nodes. Otherwise a shallow clone is returned, which behaves the same as `copy`.
+ @return A clone of this node.
+ */
+- (instancetype)cloneNodeDeep:(BOOL)deep;
+
 /**
  Returns the child node at a given index.