387 lines
14 KiB
C++
387 lines
14 KiB
C++
// Copyright (c) 2011 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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#include <math.h>
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#include <stdarg.h>
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#include <limits>
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#include <sstream>
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#include "base/basictypes.h"
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#include "base/format_macros.h"
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#include "base/i18n/icu_string_conversions.h"
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#include "base/logging.h"
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#include "base/strings/string_piece.h"
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#include "base/strings/stringprintf.h"
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#include "base/strings/utf_string_conversions.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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// Given a null-terminated string of wchar_t with each wchar_t representing
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// a UTF-16 code unit, returns a string16 made up of wchar_t's in the input.
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// Each wchar_t should be <= 0xFFFF and a non-BMP character (> U+FFFF)
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// should be represented as a surrogate pair (two UTF-16 units)
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// *even* where wchar_t is 32-bit (Linux and Mac).
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//
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// This is to help write tests for functions with string16 params until
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// the C++ 0x UTF-16 literal is well-supported by compilers.
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string16 BuildString16(const wchar_t* s) {
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#if defined(WCHAR_T_IS_UTF16)
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return string16(s);
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#elif defined(WCHAR_T_IS_UTF32)
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string16 u16;
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while (*s != 0) {
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DCHECK_LE(static_cast<unsigned int>(*s), 0xFFFFu);
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u16.push_back(*s++);
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}
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return u16;
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#endif
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}
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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(ICUStringConversionsTest, ConvertCodepageUTF8) {
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// Make sure WideToCodepage works like WideToUTF8.
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for (size_t i = 0; i < arraysize(kConvertRoundtripCases); ++i) {
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SCOPED_TRACE(base::StringPrintf("Test[%" PRIuS "]: %ls",
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i, kConvertRoundtripCases[i]));
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std::string expected(WideToUTF8(kConvertRoundtripCases[i]));
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std::string utf8;
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EXPECT_TRUE(WideToCodepage(kConvertRoundtripCases[i], kCodepageUTF8,
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OnStringConversionError::SKIP, &utf8));
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EXPECT_EQ(expected, utf8);
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}
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}
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// kConverterCodepageCases is not comprehensive. There are a number of cases
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// to add if we really want to have a comprehensive coverage of various
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// codepages and their 'idiosyncrasies'. Currently, the only implementation
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// for CodepageTo* and *ToCodepage uses ICU, which has a very extensive
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// set of tests for the charset conversion. So, we can get away with a
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// relatively small number of cases listed below.
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//
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// Note about |u16_wide| in the following struct.
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// On Windows, the field is always identical to |wide|. On Mac and Linux,
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// it's identical as long as there's no character outside the
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// BMP (<= U+FFFF). When there is, it is different from |wide| and
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// is not a real wide string (UTF-32 string) in that each wchar_t in
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// the string is a UTF-16 code unit zero-extended to be 32-bit
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// even when the code unit belongs to a surrogate pair.
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// For instance, a Unicode string (U+0041 U+010000) is represented as
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// L"\x0041\xD800\xDC00" instead of L"\x0041\x10000".
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// To avoid the clutter, |u16_wide| will be set to NULL
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// if it's identical to |wide| on *all* platforms.
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static const struct {
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const char* codepage_name;
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const char* encoded;
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OnStringConversionError::Type on_error;
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bool success;
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const wchar_t* wide;
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const wchar_t* u16_wide;
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} kConvertCodepageCases[] = {
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// Test a case where the input cannot be decoded, using SKIP, FAIL
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// and SUBSTITUTE error handling rules. "A7 41" is valid, but "A6" isn't.
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{"big5",
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"\xA7\x41\xA6",
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OnStringConversionError::FAIL,
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false,
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L"",
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NULL},
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{"big5",
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"\xA7\x41\xA6",
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OnStringConversionError::SKIP,
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true,
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L"\x4F60",
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NULL},
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{"big5",
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"\xA7\x41\xA6",
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OnStringConversionError::SUBSTITUTE,
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true,
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L"\x4F60\xFFFD",
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NULL},
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// Arabic (ISO-8859)
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{"iso-8859-6",
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"\xC7\xEE\xE4\xD3\xF1\xEE\xE4\xC7\xE5\xEF" " "
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"\xD9\xEE\xE4\xEE\xEA\xF2\xE3\xEF\xE5\xF2",
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OnStringConversionError::FAIL,
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true,
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L"\x0627\x064E\x0644\x0633\x0651\x064E\x0644\x0627\x0645\x064F" L" "
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L"\x0639\x064E\x0644\x064E\x064A\x0652\x0643\x064F\x0645\x0652",
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NULL},
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// Chinese Simplified (GB2312)
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{"gb2312",
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"\xC4\xE3\xBA\xC3",
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OnStringConversionError::FAIL,
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true,
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L"\x4F60\x597D",
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NULL},
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// Chinese (GB18030) : 4 byte sequences mapped to BMP characters
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{"gb18030",
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"\x81\x30\x84\x36\xA1\xA7",
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OnStringConversionError::FAIL,
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true,
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L"\x00A5\x00A8",
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NULL},
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// Chinese (GB18030) : A 4 byte sequence mapped to plane 2 (U+20000)
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{"gb18030",
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"\x95\x32\x82\x36\xD2\xBB",
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OnStringConversionError::FAIL,
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true,
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#if defined(WCHAR_T_IS_UTF16)
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L"\xD840\xDC00\x4E00",
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#elif defined(WCHAR_T_IS_UTF32)
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L"\x20000\x4E00",
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#endif
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L"\xD840\xDC00\x4E00"},
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{"big5",
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"\xA7\x41\xA6\x6E",
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OnStringConversionError::FAIL,
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true,
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L"\x4F60\x597D",
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NULL},
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// Greek (ISO-8859)
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{"iso-8859-7",
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"\xE3\xE5\xE9\xDC" " " "\xF3\xEF\xF5",
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OnStringConversionError::FAIL,
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true,
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L"\x03B3\x03B5\x03B9\x03AC" L" " L"\x03C3\x03BF\x03C5",
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NULL},
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// Hebrew (Windows)
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{"windows-1255",
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"\xF9\xD1\xC8\xEC\xE5\xC9\xED",
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OnStringConversionError::FAIL,
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true,
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L"\x05E9\x05C1\x05B8\x05DC\x05D5\x05B9\x05DD",
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NULL},
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// Hindi Devanagari (ISCII)
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{"iscii-dev",
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"\xEF\x42" "\xC6\xCC\xD7\xE8\xB3\xDA\xCF",
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OnStringConversionError::FAIL,
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true,
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L"\x0928\x092E\x0938\x094D\x0915\x093E\x0930",
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NULL},
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// Korean (EUC)
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{"euc-kr",
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"\xBE\xC8\xB3\xE7\xC7\xCF\xBC\xBC\xBF\xE4",
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OnStringConversionError::FAIL,
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true,
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L"\xC548\xB155\xD558\xC138\xC694",
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NULL},
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// Japanese (EUC)
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{"euc-jp",
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"\xA4\xB3\xA4\xF3\xA4\xCB\xA4\xC1\xA4\xCF\xB0\xEC\x8F\xB0\xA1\x8E\xA6",
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OnStringConversionError::FAIL,
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true,
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L"\x3053\x3093\x306B\x3061\x306F\x4E00\x4E02\xFF66",
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NULL},
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// Japanese (ISO-2022)
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{"iso-2022-jp",
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"\x1B$B" "\x24\x33\x24\x73\x24\x4B\x24\x41\x24\x4F\x30\x6C" "\x1B(B"
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"ab" "\x1B(J" "\x5C\x7E#$" "\x1B(B",
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OnStringConversionError::FAIL,
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true,
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L"\x3053\x3093\x306B\x3061\x306F\x4E00" L"ab\x00A5\x203E#$",
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NULL},
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// Japanese (Shift-JIS)
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{"sjis",
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"\x82\xB1\x82\xF1\x82\xC9\x82\xBF\x82\xCD\x88\xEA\xA6",
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OnStringConversionError::FAIL,
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true,
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L"\x3053\x3093\x306B\x3061\x306F\x4E00\xFF66",
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NULL},
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// Russian (KOI8)
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{"koi8-r",
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"\xDA\xC4\xD2\xC1\xD7\xD3\xD4\xD7\xD5\xCA\xD4\xC5",
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OnStringConversionError::FAIL,
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true,
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L"\x0437\x0434\x0440\x0430\x0432\x0441\x0442\x0432"
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L"\x0443\x0439\x0442\x0435",
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NULL},
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// Thai (windows-874)
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{"windows-874",
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"\xCA\xC7\xD1\xCA\xB4\xD5" "\xA4\xC3\xD1\xBA",
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OnStringConversionError::FAIL,
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true,
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L"\x0E2A\x0E27\x0E31\x0E2A\x0E14\x0E35"
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L"\x0E04\x0E23\x0e31\x0E1A",
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NULL},
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// Empty text
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{"iscii-dev",
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"",
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OnStringConversionError::FAIL,
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true,
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L"",
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NULL},
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};
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TEST(ICUStringConversionsTest, ConvertBetweenCodepageAndWide) {
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for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kConvertCodepageCases); ++i) {
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SCOPED_TRACE(base::StringPrintf(
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"Test[%" PRIuS "]: <encoded: %s> <codepage: %s>", i,
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kConvertCodepageCases[i].encoded,
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kConvertCodepageCases[i].codepage_name));
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std::wstring wide;
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bool success = CodepageToWide(kConvertCodepageCases[i].encoded,
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kConvertCodepageCases[i].codepage_name,
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kConvertCodepageCases[i].on_error,
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&wide);
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EXPECT_EQ(kConvertCodepageCases[i].success, success);
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EXPECT_EQ(kConvertCodepageCases[i].wide, wide);
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// When decoding was successful and nothing was skipped, we also check the
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// reverse conversion. Not all conversions are round-trippable, but
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// kConverterCodepageCases does not have any one-way conversion at the
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// moment.
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if (success &&
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kConvertCodepageCases[i].on_error ==
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OnStringConversionError::FAIL) {
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std::string encoded;
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success = WideToCodepage(wide, kConvertCodepageCases[i].codepage_name,
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kConvertCodepageCases[i].on_error, &encoded);
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EXPECT_EQ(kConvertCodepageCases[i].success, success);
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EXPECT_EQ(kConvertCodepageCases[i].encoded, encoded);
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}
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}
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// The above cases handled codepage->wide errors, but not wide->codepage.
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// Test that here.
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std::string encoded("Temp data"); // Make sure the string gets cleared.
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// First test going to an encoding that can not represent that character.
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EXPECT_FALSE(WideToCodepage(L"Chinese\xff27", "iso-8859-1",
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OnStringConversionError::FAIL, &encoded));
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EXPECT_TRUE(encoded.empty());
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EXPECT_TRUE(WideToCodepage(L"Chinese\xff27", "iso-8859-1",
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OnStringConversionError::SKIP, &encoded));
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EXPECT_STREQ("Chinese", encoded.c_str());
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// From Unicode, SUBSTITUTE is the same as SKIP for now.
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EXPECT_TRUE(WideToCodepage(L"Chinese\xff27", "iso-8859-1",
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OnStringConversionError::SUBSTITUTE,
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&encoded));
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EXPECT_STREQ("Chinese", encoded.c_str());
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#if defined(WCHAR_T_IS_UTF16)
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// When we're in UTF-16 mode, test an invalid UTF-16 character in the input.
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EXPECT_FALSE(WideToCodepage(L"a\xd800z", "iso-8859-1",
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OnStringConversionError::FAIL, &encoded));
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EXPECT_TRUE(encoded.empty());
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EXPECT_TRUE(WideToCodepage(L"a\xd800z", "iso-8859-1",
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OnStringConversionError::SKIP, &encoded));
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EXPECT_STREQ("az", encoded.c_str());
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#endif // WCHAR_T_IS_UTF16
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// Invalid characters should fail.
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EXPECT_TRUE(WideToCodepage(L"a\xffffz", "iso-8859-1",
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OnStringConversionError::SKIP, &encoded));
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EXPECT_STREQ("az", encoded.c_str());
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// Invalid codepages should fail.
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EXPECT_FALSE(WideToCodepage(L"Hello, world", "awesome-8571-2",
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OnStringConversionError::SKIP, &encoded));
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}
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TEST(ICUStringConversionsTest, ConvertBetweenCodepageAndUTF16) {
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for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kConvertCodepageCases); ++i) {
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SCOPED_TRACE(base::StringPrintf(
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"Test[%" PRIuS "]: <encoded: %s> <codepage: %s>", i,
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kConvertCodepageCases[i].encoded,
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kConvertCodepageCases[i].codepage_name));
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string16 utf16;
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bool success = CodepageToUTF16(kConvertCodepageCases[i].encoded,
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kConvertCodepageCases[i].codepage_name,
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kConvertCodepageCases[i].on_error,
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&utf16);
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string16 utf16_expected;
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if (kConvertCodepageCases[i].u16_wide == NULL)
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utf16_expected = BuildString16(kConvertCodepageCases[i].wide);
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else
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utf16_expected = BuildString16(kConvertCodepageCases[i].u16_wide);
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EXPECT_EQ(kConvertCodepageCases[i].success, success);
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EXPECT_EQ(utf16_expected, utf16);
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// When decoding was successful and nothing was skipped, we also check the
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// reverse conversion. See also the corresponding comment in
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// ConvertBetweenCodepageAndWide.
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if (success &&
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kConvertCodepageCases[i].on_error == OnStringConversionError::FAIL) {
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std::string encoded;
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success = UTF16ToCodepage(utf16, kConvertCodepageCases[i].codepage_name,
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kConvertCodepageCases[i].on_error, &encoded);
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EXPECT_EQ(kConvertCodepageCases[i].success, success);
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EXPECT_EQ(kConvertCodepageCases[i].encoded, encoded);
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}
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}
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}
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static const struct {
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const char* encoded;
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const char* codepage_name;
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bool expected_success;
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const char* expected_value;
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} kConvertAndNormalizeCases[] = {
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{"foo-\xe4.html", "iso-8859-1", true, "foo-\xc3\xa4.html"},
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{"foo-\xe4.html", "iso-8859-7", true, "foo-\xce\xb4.html"},
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{"foo-\xe4.html", "foo-bar", false, ""},
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{"foo-\xff.html", "ascii", false, ""},
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{"foo.html", "ascii", true, "foo.html"},
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{"foo-a\xcc\x88.html", "utf-8", true, "foo-\xc3\xa4.html"},
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{"\x95\x32\x82\x36\xD2\xBB", "gb18030", true, "\xF0\xA0\x80\x80\xE4\xB8\x80"},
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{"\xA7\x41\xA6\x6E", "big5", true, "\xE4\xBD\xA0\xE5\xA5\xBD"},
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// Windows-1258 does have a combining character at xD2 (which is U+0309).
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// The sequence of (U+00E2, U+0309) is also encoded as U+1EA9.
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{"foo\xE2\xD2", "windows-1258", true, "foo\xE1\xBA\xA9"},
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{"", "iso-8859-1", true, ""},
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};
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TEST(ICUStringConversionsTest, ConvertToUtf8AndNormalize) {
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std::string result;
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for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kConvertAndNormalizeCases); ++i) {
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SCOPED_TRACE(base::StringPrintf(
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"Test[%" PRIuS "]: <encoded: %s> <codepage: %s>", i,
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kConvertAndNormalizeCases[i].encoded,
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kConvertAndNormalizeCases[i].codepage_name));
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bool success = ConvertToUtf8AndNormalize(
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kConvertAndNormalizeCases[i].encoded,
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kConvertAndNormalizeCases[i].codepage_name, &result);
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EXPECT_EQ(kConvertAndNormalizeCases[i].expected_success, success);
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EXPECT_EQ(kConvertAndNormalizeCases[i].expected_value, result);
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}
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}
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} // namespace base
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