LibC: Implement wmemcpy

fleximus · Oct 3, 2021 · 485c0ef · 485c0ef
1 parent 0ca1df4
commit 485c0ef
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Showing 3 changed files with 26 additions and 0 deletions.
diff --git a/Tests/LibC/TestWchar.cpp b/Tests/LibC/TestWchar.cpp
@@ -6,6 +6,7 @@
 
 #include <LibTest/TestCase.h>
 
+#include <string.h>
 #include <wchar.h>
 
 TEST_CASE(wcspbrk)
@@ -97,6 +98,22 @@ TEST_CASE(wmemchr)
  EXPECT_EQ(ret, input + 6);
 }
 
+TEST_CASE(wmemcpy)
+{
+ const wchar_t* input = L"abc\0def";
+ auto buf = static_cast<wchar_t*>(malloc(8 * sizeof(wchar_t)));
+
+ if (!buf) {
+ FAIL("Could not allocate space for copy target");
+ return;
+ }
+
+ wchar_t* ret = wmemcpy(buf, input, 8);
+
+ EXPECT_EQ(ret, buf);
+ EXPECT_EQ(memcmp(buf, input, 8 * sizeof(wchar_t)), 0);
+}
+
 TEST_CASE(wcscoll)
 {
  // Check if wcscoll is sorting correctly. At the moment we are doing raw char comparisons,

diff --git a/Userland/Libraries/LibC/wchar.cpp b/Userland/Libraries/LibC/wchar.cpp
@@ -385,4 +385,12 @@ wchar_t* wmemchr(const wchar_t* s, wchar_t c, size_t n)
 
  return nullptr;
 }
+
+wchar_t* wmemcpy(wchar_t* dest, const wchar_t* src, size_t n)
+{
+ for (size_t i = 0; i < n; i++)
+ dest[i] = src[i];
+
+ return dest;
+}
 }
diff --git a/Userland/Libraries/LibC/wchar.h b/Userland/Libraries/LibC/wchar.h
@@ -44,5 +44,6 @@ int mbsinit(const mbstate_t*);
 wchar_t* wcspbrk(const wchar_t*, const wchar_t*);
 wchar_t* wcsstr(const wchar_t*, const wchar_t*);
 wchar_t* wmemchr(const wchar_t*, wchar_t, size_t);
+wchar_t* wmemcpy(wchar_t*, const wchar_t*, size_t);
 
 __END_DECLS