From 4b8b42be6cca9a5aa1103472de2c9da880e2512a Mon Sep 17 00:00:00 2001
From: Scott Graham <scottmg@chromium.org>
Date: Fri, 23 Oct 2015 13:38:46 -0700
Subject: [PATCH] win: Implement c16lcpy without base:c16*

Chromium base doesn't have base::c16len, c16memcpy, etc. when
WCHAR_T_IS_UTF16, so implement c16lcpy without using those.

R=mark@chromium.org
BUG=crashpad:1, chromium:546288

Review URL: https://codereview.chromium.org/1417403004 .
---
 util/stdlib/strlcpy.cc | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/util/stdlib/strlcpy.cc b/util/stdlib/strlcpy.cc
index 90d6d96e..be0dfb27 100644
--- a/util/stdlib/strlcpy.cc
+++ b/util/stdlib/strlcpy.cc
@@ -14,8 +14,27 @@
 
 #include "util/stdlib/strlcpy.h"
 
+#include "base/logging.h"
+#include "build/build_config.h"
+
+#if defined(OS_WIN) && defined(WCHAR_T_IS_UTF16)
+#include <strsafe.h>
+#endif
+
 namespace crashpad {
 
+#if defined(OS_WIN) && defined(WCHAR_T_IS_UTF16)
+
+size_t c16lcpy(base::char16* destination,
+               const base::char16* source,
+               size_t length) {
+  HRESULT result = StringCchCopyW(destination, length, source);
+  CHECK(result == S_OK || result == STRSAFE_E_INSUFFICIENT_BUFFER);
+  return wcslen(source);
+}
+
+#elif defined(WCHAR_T_IS_UTF32)
+
 size_t c16lcpy(base::char16* destination,
                const base::char16* source,
                size_t length) {
@@ -29,4 +48,6 @@ size_t c16lcpy(base::char16* destination,
   return source_length;
 }
 
+#endif  // WCHAR_T_IS_UTF32
+
 }  // namespace crashpad