From 1da0f92d841fbeb76ded3be11753bbb8e1bf1eb3 Mon Sep 17 00:00:00 2001
From: hjxilinx <hjxilinx@163.com>
Date: Fri, 10 Apr 2020 15:06:20 +0800
Subject: [PATCH] [td-98] add clone function for array

---
 src/util/inc/tarray.h |  6 ++++++
 src/util/src/tarray.c | 15 +++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/src/util/inc/tarray.h b/src/util/inc/tarray.h
index 6b70780d10..28ebb18235 100644
--- a/src/util/inc/tarray.h
+++ b/src/util/inc/tarray.h
@@ -100,6 +100,12 @@ void taosArrayRemove(SArray* pArray, size_t index);
  */
 void taosArrayCopy(SArray* pDst, SArray* pSrc);
 
+/**
+ * clone a new array
+ * @param pSrc
+ */
+SArray* taosArrayClone(SArray* pSrc);
+
 /**
  * destroy array list
  * @param pArray
diff --git a/src/util/src/tarray.c b/src/util/src/tarray.c
index eb1d213317..d97b220a40 100755
--- a/src/util/src/tarray.c
+++ b/src/util/src/tarray.c
@@ -160,6 +160,21 @@ void taosArrayCopy(SArray* pDst, SArray* pSrc) {
   pDst->size = pSrc->size;
 }
 
+SArray* taosArrayClone(SArray* pSrc) {
+  assert(pSrc != NULL);
+  
+  if (pSrc->size == 0) { // empty array list
+    return taosArrayInit(8, pSrc->elemSize);
+  }
+  
+  SArray* dst = taosArrayInit(pSrc->size, pSrc->elemSize);
+  
+  memcpy(dst->pData, pSrc->pData, pSrc->elemSize * pSrc->size);
+  dst->size = pSrc->size;
+  return dst;
+}
+
+
 void taosArrayDestroy(SArray* pArray) {
   if (pArray == NULL) {
     return;
-- 
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