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authorBo Xu <bo_xu@foxitsoftware.com>2015-01-21 12:17:23 -0800
committerBo Xu <bo_xu@foxitsoftware.com>2015-01-21 12:17:23 -0800
commit0185408126529d5df7e095c5789affd4ae971375 (patch)
tree093caeab0a75ed18a26ffc3ff950b624c3e59460 /core/src/fxcrt
parentaa7b4ede03764a5701a477b601720a32c88d8e42 (diff)
downloadpdfium-0185408126529d5df7e095c5789affd4ae971375.tar.xz
Simplify UTF16LE_Encode and add unittest.
Previously, UTF16LE_Encode take an optional flag to indicate if the returned byte string has trailing zeros. In fact, no where needs the flag to be false. So just get rid of it so callers won't misuse. The bug is found by https://codereview.chromium.org/837723009 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/860973002
Diffstat (limited to 'core/src/fxcrt')
-rw-r--r--core/src/fxcrt/fx_basic_wstring.cpp16
-rw-r--r--core/src/fxcrt/fx_basic_wstring_unittest.cpp29
2 files changed, 35 insertions, 10 deletions
diff --git a/core/src/fxcrt/fx_basic_wstring.cpp b/core/src/fxcrt/fx_basic_wstring.cpp
index 0827fb6f34..0945d2f1c5 100644
--- a/core/src/fxcrt/fx_basic_wstring.cpp
+++ b/core/src/fxcrt/fx_basic_wstring.cpp
@@ -323,25 +323,21 @@ CFX_ByteString CFX_WideString::UTF8Encode() const
{
return FX_UTF8Encode(*this);
}
-CFX_ByteString CFX_WideString::UTF16LE_Encode(FX_BOOL bTerminate) const
+CFX_ByteString CFX_WideString::UTF16LE_Encode() const
{
if (m_pData == NULL) {
- return bTerminate ? CFX_ByteString(FX_BSTRC("\0\0")) : CFX_ByteString();
+ return CFX_ByteString(FX_BSTRC("\0\0"));
}
int len = m_pData->m_nDataLength;
CFX_ByteString result;
- FX_LPSTR buffer = result.GetBuffer(len * 2 + (bTerminate ? 2 : 0));
+ FX_LPSTR buffer = result.GetBuffer(len * 2 + 2);
for (int i = 0; i < len; i ++) {
buffer[i * 2] = m_pData->m_String[i] & 0xff;
buffer[i * 2 + 1] = m_pData->m_String[i] >> 8;
}
- if (bTerminate) {
- buffer[len * 2] = 0;
- buffer[len * 2 + 1] = 0;
- result.ReleaseBuffer(len * 2 + 2);
- } else {
- result.ReleaseBuffer(len * 2);
- }
+ buffer[len * 2] = 0;
+ buffer[len * 2 + 1] = 0;
+ result.ReleaseBuffer(len * 2 + 2);
return result;
}
void CFX_WideString::ConvertFrom(const CFX_ByteString& str, CFX_CharMap* pCharMap)
diff --git a/core/src/fxcrt/fx_basic_wstring_unittest.cpp b/core/src/fxcrt/fx_basic_wstring_unittest.cpp
new file mode 100644
index 0000000000..c6e5c2f3d0
--- /dev/null
+++ b/core/src/fxcrt/fx_basic_wstring_unittest.cpp
@@ -0,0 +1,29 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "../../../testing/fx_string_testhelpers.h"
+#include "../../include/fxcrt/fx_basic.h"
+
+#define ByteStringLiteral(str) CFX_ByteString(FX_BSTRC(str))
+
+TEST(fxcrt, WideStringUTF16LE_Encode) {
+ struct UTF16LEEncodeCase {
+ CFX_WideString ws;
+ CFX_ByteString bs;
+ } utf16le_encode_cases[] = {
+ { L"", ByteStringLiteral("\0\0") },
+ { L"abc", ByteStringLiteral("a\0b\0c\0\0\0") },
+ { L"abcdef", ByteStringLiteral("a\0b\0c\0d\0e\0f\0\0\0") },
+ { L"abc\0def", ByteStringLiteral("a\0b\0c\0\0\0") },
+ { L"\xaabb\xccdd", ByteStringLiteral("\xbb\xaa\xdd\xcc\0\0") },
+ { L"\x3132\x6162", ByteStringLiteral("\x32\x31\x62\x61\0\0") },
+ };
+
+ for (size_t i = 0; i < FX_ArraySize(utf16le_encode_cases); ++i) {
+ EXPECT_EQ(utf16le_encode_cases[i].bs,
+ utf16le_encode_cases[i].ws.UTF16LE_Encode())
+ << " for case number " << i;
+ }
+}