2015-11-12 02:02:29 +08:00
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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2015-12-05 14:00:26 +08:00
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#include "android-base/utf8.h"
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2015-11-12 02:02:29 +08:00
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#include <gtest/gtest.h>
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2015-12-05 14:00:26 +08:00
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#include "android-base/macros.h"
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2015-11-12 02:02:29 +08:00
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namespace android {
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namespace base {
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TEST(UTFStringConversionsTest, ConvertInvalidUTF8) {
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std::wstring wide;
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2015-11-13 07:20:15 +08:00
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errno = 0;
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2015-11-12 02:02:29 +08:00
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// Standalone \xa2 is an invalid UTF-8 sequence, so this should return an
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// error. Concatenate two C/C++ literal string constants to prevent the
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// compiler from giving an error about "\xa2af" containing a "hex escape
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// sequence out of range".
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EXPECT_FALSE(android::base::UTF8ToWide("before\xa2" "after", &wide));
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2015-11-13 07:20:15 +08:00
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EXPECT_EQ(EILSEQ, errno);
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2015-11-12 02:02:29 +08:00
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// Even if an invalid character is encountered, UTF8ToWide() should still do
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// its best to convert the rest of the string. sysdeps_win32.cpp:
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// _console_write_utf8() depends on this behavior.
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//
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// Thus, we verify that the valid characters are converted, but we ignore the
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// specific replacement character that UTF8ToWide() may replace the invalid
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// UTF-8 characters with because we want to allow that to change if the
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// implementation changes.
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2016-01-16 04:14:24 +08:00
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EXPECT_EQ(0U, wide.find(L"before"));
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2015-11-12 02:02:29 +08:00
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const wchar_t after_wide[] = L"after";
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EXPECT_EQ(wide.length() - (arraysize(after_wide) - 1), wide.find(after_wide));
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}
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// Below is adapted from https://chromium.googlesource.com/chromium/src/+/master/base/strings/utf_string_conversions_unittest.cc
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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// The tests below from utf_string_conversions_unittest.cc check for this
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// preprocessor symbol, so define it, as it is appropriate for Windows.
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#define WCHAR_T_IS_UTF16
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static_assert(sizeof(wchar_t) == 2, "wchar_t is not 2 bytes");
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// The tests below from utf_string_conversions_unittest.cc call versions of
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// UTF8ToWide() and WideToUTF8() that don't return success/failure, so these are
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// stub implementations with that signature. These are just for testing and
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// should not be moved to base because they assert/expect no errors which is
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// probably not a good idea (or at least it is something that should be left
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// up to the caller, not a base library).
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static std::wstring UTF8ToWide(const std::string& utf8) {
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std::wstring utf16;
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EXPECT_TRUE(UTF8ToWide(utf8, &utf16));
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return utf16;
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}
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static std::string WideToUTF8(const std::wstring& utf16) {
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std::string utf8;
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EXPECT_TRUE(WideToUTF8(utf16, &utf8));
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return utf8;
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}
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namespace {
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const wchar_t* const kConvertRoundtripCases[] = {
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L"Google Video",
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// "网页 图片 资讯更多 »"
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L"\x7f51\x9875\x0020\x56fe\x7247\x0020\x8d44\x8baf\x66f4\x591a\x0020\x00bb",
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// "Παγκόσμιος Ιστός"
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L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
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L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2",
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// "Поиск страниц на русском"
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L"\x041f\x043e\x0438\x0441\x043a\x0020\x0441\x0442"
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L"\x0440\x0430\x043d\x0438\x0446\x0020\x043d\x0430"
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L"\x0020\x0440\x0443\x0441\x0441\x043a\x043e\x043c",
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// "전체서비스"
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L"\xc804\xccb4\xc11c\xbe44\xc2a4",
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// Test characters that take more than 16 bits. This will depend on whether
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// wchar_t is 16 or 32 bits.
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#if defined(WCHAR_T_IS_UTF16)
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L"\xd800\xdf00",
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// ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
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L"\xd807\xdd40\xd807\xdd41\xd807\xdd42\xd807\xdd43\xd807\xdd44",
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#elif defined(WCHAR_T_IS_UTF32)
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L"\x10300",
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// ????? (Mathematical Alphanumeric Symbols (U+011d40 - U+011d44 : A,B,C,D,E)
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L"\x11d40\x11d41\x11d42\x11d43\x11d44",
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#endif
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};
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} // namespace
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TEST(UTFStringConversionsTest, ConvertUTF8AndWide) {
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// we round-trip all the wide strings through UTF-8 to make sure everything
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// agrees on the conversion. This uses the stream operators to test them
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// simultaneously.
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for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
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std::ostringstream utf8;
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utf8 << WideToUTF8(kConvertRoundtripCases[i]);
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std::wostringstream wide;
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wide << UTF8ToWide(utf8.str());
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EXPECT_EQ(kConvertRoundtripCases[i], wide.str());
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}
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}
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TEST(UTFStringConversionsTest, ConvertUTF8AndWideEmptyString) {
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// An empty std::wstring should be converted to an empty std::string,
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// and vice versa.
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std::wstring wempty;
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std::string empty;
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EXPECT_EQ(empty, WideToUTF8(wempty));
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EXPECT_EQ(wempty, UTF8ToWide(empty));
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}
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TEST(UTFStringConversionsTest, ConvertUTF8ToWide) {
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struct UTF8ToWideCase {
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const char* utf8;
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const wchar_t* wide;
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bool success;
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} convert_cases[] = {
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// Regular UTF-8 input.
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{"\xe4\xbd\xa0\xe5\xa5\xbd", L"\x4f60\x597d", true},
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// Non-character is passed through.
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{"\xef\xbf\xbfHello", L"\xffffHello", true},
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// Truncated UTF-8 sequence.
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{"\xe4\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
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// Truncated off the end.
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{"\xe5\xa5\xbd\xe4\xa0", L"\x597d\xfffd", false},
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// Non-shortest-form UTF-8.
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{"\xf0\x84\xbd\xa0\xe5\xa5\xbd", L"\xfffd\x597d", false},
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// This UTF-8 character decodes to a UTF-16 surrogate, which is illegal.
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// Note that for whatever reason, this test fails on Windows XP.
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{"\xed\xb0\x80", L"\xfffd", false},
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// Non-BMP characters. The second is a non-character regarded as valid.
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// The result will either be in UTF-16 or UTF-32.
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#if defined(WCHAR_T_IS_UTF16)
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{"A\xF0\x90\x8C\x80z", L"A\xd800\xdf00z", true},
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{"A\xF4\x8F\xBF\xBEz", L"A\xdbff\xdffez", true},
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#elif defined(WCHAR_T_IS_UTF32)
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{"A\xF0\x90\x8C\x80z", L"A\x10300z", true},
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{"A\xF4\x8F\xBF\xBEz", L"A\x10fffez", true},
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#endif
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};
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for (size_t i = 0; i < arraysize(convert_cases); i++) {
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std::wstring converted;
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errno = 0;
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const bool success = UTF8ToWide(convert_cases[i].utf8,
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strlen(convert_cases[i].utf8),
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&converted);
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EXPECT_EQ(convert_cases[i].success, success);
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// The original test always compared expected and converted, but don't do
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// that because our implementation of UTF8ToWide() does not guarantee to
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// produce the same output in error situations.
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if (success) {
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std::wstring expected(convert_cases[i].wide);
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EXPECT_EQ(expected, converted);
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} else {
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EXPECT_EQ(EILSEQ, errno);
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}
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}
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// Manually test an embedded NULL.
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std::wstring converted;
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EXPECT_TRUE(UTF8ToWide("\00Z\t", 3, &converted));
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ASSERT_EQ(3U, converted.length());
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EXPECT_EQ(static_cast<wchar_t>(0), converted[0]);
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EXPECT_EQ('Z', converted[1]);
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EXPECT_EQ('\t', converted[2]);
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// Make sure that conversion replaces, not appends.
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EXPECT_TRUE(UTF8ToWide("B", 1, &converted));
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ASSERT_EQ(1U, converted.length());
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EXPECT_EQ('B', converted[0]);
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}
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#if defined(WCHAR_T_IS_UTF16)
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// This test is only valid when wchar_t == UTF-16.
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TEST(UTFStringConversionsTest, ConvertUTF16ToUTF8) {
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struct WideToUTF8Case {
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const wchar_t* utf16;
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const char* utf8;
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bool success;
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} convert_cases[] = {
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// Regular UTF-16 input.
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{L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
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// Test a non-BMP character.
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{L"\xd800\xdf00", "\xF0\x90\x8C\x80", true},
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// Non-characters are passed through.
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{L"\xffffHello", "\xEF\xBF\xBFHello", true},
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{L"\xdbff\xdffeHello", "\xF4\x8F\xBF\xBEHello", true},
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// The first character is a truncated UTF-16 character.
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// Note that for whatever reason, this test fails on Windows XP.
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{L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd",
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#if (WINVER >= 0x0600)
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// Only Vista and later has a new API/flag that correctly returns false.
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false
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#else
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true
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#endif
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},
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// Truncated at the end.
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// Note that for whatever reason, this test fails on Windows XP.
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{L"\x597d\xd800", "\xe5\xa5\xbd\xef\xbf\xbd",
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#if (WINVER >= 0x0600)
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// Only Vista and later has a new API/flag that correctly returns false.
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false
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#else
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true
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#endif
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},
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};
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for (size_t i = 0; i < arraysize(convert_cases); i++) {
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std::string converted;
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errno = 0;
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const bool success = WideToUTF8(convert_cases[i].utf16,
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wcslen(convert_cases[i].utf16),
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&converted);
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EXPECT_EQ(convert_cases[i].success, success);
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// The original test always compared expected and converted, but don't do
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// that because our implementation of WideToUTF8() does not guarantee to
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// produce the same output in error situations.
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if (success) {
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std::string expected(convert_cases[i].utf8);
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EXPECT_EQ(expected, converted);
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} else {
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EXPECT_EQ(EILSEQ, errno);
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}
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}
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}
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#elif defined(WCHAR_T_IS_UTF32)
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// This test is only valid when wchar_t == UTF-32.
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TEST(UTFStringConversionsTest, ConvertUTF32ToUTF8) {
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struct WideToUTF8Case {
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const wchar_t* utf32;
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const char* utf8;
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bool success;
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} convert_cases[] = {
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// Regular 16-bit input.
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{L"\x4f60\x597d", "\xe4\xbd\xa0\xe5\xa5\xbd", true},
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// Test a non-BMP character.
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{L"A\x10300z", "A\xF0\x90\x8C\x80z", true},
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// Non-characters are passed through.
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{L"\xffffHello", "\xEF\xBF\xBFHello", true},
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{L"\x10fffeHello", "\xF4\x8F\xBF\xBEHello", true},
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// Invalid Unicode code points.
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{L"\xfffffffHello", "\xEF\xBF\xBDHello", false},
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// The first character is a truncated UTF-16 character.
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{L"\xd800\x597d", "\xef\xbf\xbd\xe5\xa5\xbd", false},
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{L"\xdc01Hello", "\xef\xbf\xbdHello", false},
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};
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for (size_t i = 0; i < arraysize(convert_cases); i++) {
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std::string converted;
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EXPECT_EQ(convert_cases[i].success,
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WideToUTF8(convert_cases[i].utf32,
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wcslen(convert_cases[i].utf32),
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&converted));
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std::string expected(convert_cases[i].utf8);
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EXPECT_EQ(expected, converted);
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}
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}
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#endif // defined(WCHAR_T_IS_UTF32)
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// The test below uses these types and functions, so just do enough to get the
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// test running.
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typedef wchar_t char16;
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typedef std::wstring string16;
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template<typename T>
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static void* WriteInto(T* t, size_t size) {
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// std::(w)string::resize() already includes space for a NULL terminator.
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t->resize(size - 1);
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return &(*t)[0];
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}
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// A stub implementation that calls a helper from above, just to get the test
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// below working. This is just for testing and should not be moved to base
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// because this ignores errors which is probably not a good idea, plus it takes
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// a string16 type which we don't really have.
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static std::string UTF16ToUTF8(const string16& utf16) {
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return WideToUTF8(utf16);
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}
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TEST(UTFStringConversionsTest, ConvertMultiString) {
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static char16 multi16[] = {
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'f', 'o', 'o', '\0',
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'b', 'a', 'r', '\0',
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'b', 'a', 'z', '\0',
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'\0'
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};
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|
|
|
static char multi[] = {
|
|
|
|
'f', 'o', 'o', '\0',
|
|
|
|
'b', 'a', 'r', '\0',
|
|
|
|
'b', 'a', 'z', '\0',
|
|
|
|
'\0'
|
|
|
|
};
|
|
|
|
string16 multistring16;
|
|
|
|
memcpy(WriteInto(&multistring16, arraysize(multi16)), multi16,
|
|
|
|
sizeof(multi16));
|
|
|
|
EXPECT_EQ(arraysize(multi16) - 1, multistring16.length());
|
|
|
|
std::string expected;
|
|
|
|
memcpy(WriteInto(&expected, arraysize(multi)), multi, sizeof(multi));
|
|
|
|
EXPECT_EQ(arraysize(multi) - 1, expected.length());
|
|
|
|
const std::string& converted = UTF16ToUTF8(multistring16);
|
|
|
|
EXPECT_EQ(arraysize(multi) - 1, converted.length());
|
|
|
|
EXPECT_EQ(expected, converted);
|
|
|
|
}
|
|
|
|
|
|
|
|
// The tests below from sys_string_conversions_unittest.cc call SysWideToUTF8()
|
|
|
|
// and SysUTF8ToWide(), so these are stub implementations that call the helpers
|
|
|
|
// above. These are just for testing and should not be moved to base because
|
|
|
|
// they ignore errors which is probably not a good idea.
|
|
|
|
|
|
|
|
static std::string SysWideToUTF8(const std::wstring& utf16) {
|
|
|
|
return WideToUTF8(utf16);
|
|
|
|
}
|
|
|
|
|
|
|
|
static std::wstring SysUTF8ToWide(const std::string& utf8) {
|
|
|
|
return UTF8ToWide(utf8);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Below is adapted from https://chromium.googlesource.com/chromium/src/+/master/base/strings/sys_string_conversions_unittest.cc
|
|
|
|
|
|
|
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
|
|
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
|
|
// found in the LICENSE file.
|
|
|
|
|
|
|
|
#ifdef WCHAR_T_IS_UTF32
|
|
|
|
static const std::wstring kSysWideOldItalicLetterA = L"\x10300";
|
|
|
|
#else
|
|
|
|
static const std::wstring kSysWideOldItalicLetterA = L"\xd800\xdf00";
|
|
|
|
#endif
|
|
|
|
|
|
|
|
TEST(SysStrings, SysWideToUTF8) {
|
|
|
|
EXPECT_EQ("Hello, world", SysWideToUTF8(L"Hello, world"));
|
|
|
|
EXPECT_EQ("\xe4\xbd\xa0\xe5\xa5\xbd", SysWideToUTF8(L"\x4f60\x597d"));
|
|
|
|
|
|
|
|
// >16 bits
|
|
|
|
EXPECT_EQ("\xF0\x90\x8C\x80", SysWideToUTF8(kSysWideOldItalicLetterA));
|
|
|
|
|
|
|
|
// Error case. When Windows finds a UTF-16 character going off the end of
|
|
|
|
// a string, it just converts that literal value to UTF-8, even though this
|
|
|
|
// is invalid.
|
|
|
|
//
|
|
|
|
// This is what XP does, but Vista has different behavior, so we don't bother
|
|
|
|
// verifying it:
|
|
|
|
// EXPECT_EQ("\xE4\xBD\xA0\xED\xA0\x80zyxw",
|
|
|
|
// SysWideToUTF8(L"\x4f60\xd800zyxw"));
|
|
|
|
|
|
|
|
// Test embedded NULLs.
|
|
|
|
std::wstring wide_null(L"a");
|
|
|
|
wide_null.push_back(0);
|
|
|
|
wide_null.push_back('b');
|
|
|
|
|
|
|
|
std::string expected_null("a");
|
|
|
|
expected_null.push_back(0);
|
|
|
|
expected_null.push_back('b');
|
|
|
|
|
|
|
|
EXPECT_EQ(expected_null, SysWideToUTF8(wide_null));
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST(SysStrings, SysUTF8ToWide) {
|
|
|
|
EXPECT_EQ(L"Hello, world", SysUTF8ToWide("Hello, world"));
|
|
|
|
EXPECT_EQ(L"\x4f60\x597d", SysUTF8ToWide("\xe4\xbd\xa0\xe5\xa5\xbd"));
|
|
|
|
// >16 bits
|
|
|
|
EXPECT_EQ(kSysWideOldItalicLetterA, SysUTF8ToWide("\xF0\x90\x8C\x80"));
|
|
|
|
|
|
|
|
// Error case. When Windows finds an invalid UTF-8 character, it just skips
|
|
|
|
// it. This seems weird because it's inconsistent with the reverse conversion.
|
|
|
|
//
|
|
|
|
// This is what XP does, but Vista has different behavior, so we don't bother
|
|
|
|
// verifying it:
|
|
|
|
// EXPECT_EQ(L"\x4f60zyxw", SysUTF8ToWide("\xe4\xbd\xa0\xe5\xa5zyxw"));
|
|
|
|
|
|
|
|
// Test embedded NULLs.
|
|
|
|
std::string utf8_null("a");
|
|
|
|
utf8_null.push_back(0);
|
|
|
|
utf8_null.push_back('b');
|
|
|
|
|
|
|
|
std::wstring expected_null(L"a");
|
|
|
|
expected_null.push_back(0);
|
|
|
|
expected_null.push_back('b');
|
|
|
|
|
|
|
|
EXPECT_EQ(expected_null, SysUTF8ToWide(utf8_null));
|
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace base
|
|
|
|
} // namespace android
|