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- // 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.
- #include "base/i18n/icu_string_conversions.h"
- #include <math.h>
- #include <stdarg.h>
- #include <stddef.h>
- #include <limits>
- #include <sstream>
- #include "base/check_op.h"
- #include "base/format_macros.h"
- #include "base/strings/string_piece.h"
- #include "base/strings/stringprintf.h"
- #include "base/strings/utf_string_conversions.h"
- #include "build/build_config.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace base {
- namespace {
- // Given a null-terminated string of wchar_t with each wchar_t representing
- // a UTF-16 code unit, returns a std::u16string made up of wchar_t's in the
- // input. Each wchar_t should be <= 0xFFFF and a non-BMP character (> U+FFFF)
- // should be represented as a surrogate pair (two UTF-16 units)
- // *even* where wchar_t is 32-bit (Linux and Mac).
- //
- // This is to help write tests for functions with std::u16string params until
- // the C++ 0x UTF-16 literal is well-supported by compilers.
- std::u16string BuildString16(const wchar_t* s) {
- #if defined(WCHAR_T_IS_UTF16)
- return WideToUTF16(s);
- #elif defined(WCHAR_T_IS_UTF32)
- std::u16string u16;
- while (*s != 0) {
- DCHECK_LE(static_cast<unsigned int>(*s), 0xFFFFu);
- u16.push_back(*s++);
- }
- return u16;
- #endif
- }
- } // namespace
- // kConverterCodepageCases is not comprehensive. There are a number of cases
- // to add if we really want to have a comprehensive coverage of various
- // codepages and their 'idiosyncrasies'. Currently, the only implementation
- // for CodepageTo* and *ToCodepage uses ICU, which has a very extensive
- // set of tests for the charset conversion. So, we can get away with a
- // relatively small number of cases listed below.
- //
- // Note about |u16_wide| in the following struct.
- // On Windows, the field is always identical to |wide|. On Mac and Linux,
- // it's identical as long as there's no character outside the
- // BMP (<= U+FFFF). When there is, it is different from |wide| and
- // is not a real wide string (UTF-32 string) in that each wchar_t in
- // the string is a UTF-16 code unit zero-extended to be 32-bit
- // even when the code unit belongs to a surrogate pair.
- // For instance, a Unicode string (U+0041 U+010000) is represented as
- // L"\x0041\xD800\xDC00" instead of L"\x0041\x10000".
- // To avoid the clutter, |u16_wide| will be set to NULL
- // if it's identical to |wide| on *all* platforms.
- static const struct {
- const char* codepage_name;
- const char* encoded;
- OnStringConversionError::Type on_error;
- bool success;
- const wchar_t* wide;
- const wchar_t* u16_wide;
- } kConvertCodepageCases[] = {
- // Test a case where the input cannot be decoded, using SKIP, FAIL
- // and SUBSTITUTE error handling rules. "A7 41" is valid, but "A6" isn't.
- {"big5", "\xA7\x41\xA6", OnStringConversionError::FAIL, false, L"",
- nullptr},
- {"big5", "\xA7\x41\xA6", OnStringConversionError::SKIP, true, L"\x4F60",
- nullptr},
- {"big5", "\xA7\x41\xA6", OnStringConversionError::SUBSTITUTE, true,
- L"\x4F60\xFFFD", nullptr},
- // Arabic (ISO-8859)
- {"iso-8859-6",
- "\xC7\xEE\xE4\xD3\xF1\xEE\xE4\xC7\xE5\xEF"
- " "
- "\xD9\xEE\xE4\xEE\xEA\xF2\xE3\xEF\xE5\xF2",
- OnStringConversionError::FAIL, true,
- L"\x0627\x064E\x0644\x0633\x0651\x064E\x0644\x0627\x0645\x064F"
- L" "
- L"\x0639\x064E\x0644\x064E\x064A\x0652\x0643\x064F\x0645\x0652",
- nullptr},
- // Chinese Simplified (GB2312)
- {"gb2312", "\xC4\xE3\xBA\xC3", OnStringConversionError::FAIL, true,
- L"\x4F60\x597D", nullptr},
- // Chinese (GB18030) : 4 byte sequences mapped to BMP characters
- {"gb18030", "\x81\x30\x84\x36\xA1\xA7", OnStringConversionError::FAIL, true,
- L"\x00A5\x00A8", nullptr},
- // Chinese (GB18030) : A 4 byte sequence mapped to plane 2 (U+20000)
- {"gb18030", "\x95\x32\x82\x36\xD2\xBB", OnStringConversionError::FAIL, true,
- #if defined(WCHAR_T_IS_UTF16)
- L"\xD840\xDC00\x4E00",
- #elif defined(WCHAR_T_IS_UTF32)
- L"\x20000\x4E00",
- #endif
- L"\xD840\xDC00\x4E00"},
- {"big5", "\xA7\x41\xA6\x6E", OnStringConversionError::FAIL, true,
- L"\x4F60\x597D", nullptr},
- // Greek (ISO-8859)
- {"iso-8859-7",
- "\xE3\xE5\xE9\xDC"
- " "
- "\xF3\xEF\xF5",
- OnStringConversionError::FAIL, true,
- L"\x03B3\x03B5\x03B9\x03AC"
- L" "
- L"\x03C3\x03BF\x03C5",
- nullptr},
- // Hebrew (Windows)
- {"windows-1255", "\xF9\xD1\xC8\xEC\xE5\xC9\xED",
- OnStringConversionError::FAIL, true,
- L"\x05E9\x05C1\x05B8\x05DC\x05D5\x05B9\x05DD", nullptr},
- // Korean (EUC)
- {"euc-kr", "\xBE\xC8\xB3\xE7\xC7\xCF\xBC\xBC\xBF\xE4",
- OnStringConversionError::FAIL, true, L"\xC548\xB155\xD558\xC138\xC694",
- nullptr},
- // Japanese (EUC)
- {"euc-jp", "\xA4\xB3\xA4\xF3\xA4\xCB\xA4\xC1\xA4\xCF\xB0\xEC\x8E\xA6",
- OnStringConversionError::FAIL, true,
- L"\x3053\x3093\x306B\x3061\x306F\x4E00\xFF66", nullptr},
- // Japanese (ISO-2022)
- {"iso-2022-jp",
- "\x1B$B"
- "\x24\x33\x24\x73\x24\x4B\x24\x41\x24\x4F\x30\x6C"
- "\x1B(B"
- "ab"
- "\x1B(J"
- "\x5C\x7E#$"
- "\x1B(B",
- OnStringConversionError::FAIL, true,
- L"\x3053\x3093\x306B\x3061\x306F\x4E00"
- L"ab\x00A5\x203E#$",
- nullptr},
- // Japanese (Shift-JIS)
- {"sjis", "\x82\xB1\x82\xF1\x82\xC9\x82\xBF\x82\xCD\x88\xEA\xA6",
- OnStringConversionError::FAIL, true,
- L"\x3053\x3093\x306B\x3061\x306F\x4E00\xFF66", nullptr},
- // Russian (KOI8)
- {"koi8-r", "\xDA\xC4\xD2\xC1\xD7\xD3\xD4\xD7\xD5\xCA\xD4\xC5",
- OnStringConversionError::FAIL, true,
- L"\x0437\x0434\x0440\x0430\x0432\x0441\x0442\x0432"
- L"\x0443\x0439\x0442\x0435",
- nullptr},
- // Thai (windows-874)
- {"windows-874",
- "\xCA\xC7\xD1\xCA\xB4\xD5"
- "\xA4\xC3\xD1\xBA",
- OnStringConversionError::FAIL, true,
- L"\x0E2A\x0E27\x0E31\x0E2A\x0E14\x0E35"
- L"\x0E04\x0E23\x0e31\x0E1A",
- nullptr},
- };
- TEST(ICUStringConversionsTest, ConvertBetweenCodepageAndUTF16) {
- for (size_t i = 0; i < std::size(kConvertCodepageCases); ++i) {
- SCOPED_TRACE(base::StringPrintf(
- "Test[%" PRIuS "]: <encoded: %s> <codepage: %s>", i,
- kConvertCodepageCases[i].encoded,
- kConvertCodepageCases[i].codepage_name));
- std::u16string utf16;
- bool success = CodepageToUTF16(kConvertCodepageCases[i].encoded,
- kConvertCodepageCases[i].codepage_name,
- kConvertCodepageCases[i].on_error,
- &utf16);
- std::u16string utf16_expected;
- if (kConvertCodepageCases[i].u16_wide == nullptr)
- utf16_expected = BuildString16(kConvertCodepageCases[i].wide);
- else
- utf16_expected = BuildString16(kConvertCodepageCases[i].u16_wide);
- EXPECT_EQ(kConvertCodepageCases[i].success, success);
- EXPECT_EQ(utf16_expected, utf16);
- // When decoding was successful and nothing was skipped, we also check the
- // reverse conversion. See also the corresponding comment in
- // ConvertBetweenCodepageAndWide.
- if (success &&
- kConvertCodepageCases[i].on_error == OnStringConversionError::FAIL) {
- std::string encoded;
- success = UTF16ToCodepage(utf16, kConvertCodepageCases[i].codepage_name,
- kConvertCodepageCases[i].on_error, &encoded);
- EXPECT_EQ(kConvertCodepageCases[i].success, success);
- EXPECT_EQ(kConvertCodepageCases[i].encoded, encoded);
- }
- }
- }
- static const struct {
- const char* encoded;
- const char* codepage_name;
- bool expected_success;
- const char* expected_value;
- } kConvertAndNormalizeCases[] = {
- {"foo-\xe4.html", "iso-8859-1", true, "foo-\xc3\xa4.html"},
- {"foo-\xe4.html", "iso-8859-7", true, "foo-\xce\xb4.html"},
- {"foo-\xe4.html", "foo-bar", false, ""},
- // HTML Encoding spec treats US-ASCII as synonymous with windows-1252
- {"foo-\xff.html", "ascii", true, "foo-\xc3\xbf.html"},
- {"foo.html", "ascii", true, "foo.html"},
- {"foo-a\xcc\x88.html", "utf-8", true, "foo-\xc3\xa4.html"},
- {"\x95\x32\x82\x36\xD2\xBB", "gb18030", true, "\xF0\xA0\x80\x80\xE4\xB8\x80"},
- {"\xA7\x41\xA6\x6E", "big5", true, "\xE4\xBD\xA0\xE5\xA5\xBD"},
- // Windows-1258 does have a combining character at xD2 (which is U+0309).
- // The sequence of (U+00E2, U+0309) is also encoded as U+1EA9.
- {"foo\xE2\xD2", "windows-1258", true, "foo\xE1\xBA\xA9"},
- {"", "iso-8859-1", true, ""},
- };
- TEST(ICUStringConversionsTest, ConvertToUtf8AndNormalize) {
- std::string result;
- for (size_t i = 0; i < std::size(kConvertAndNormalizeCases); ++i) {
- SCOPED_TRACE(base::StringPrintf(
- "Test[%" PRIuS "]: <encoded: %s> <codepage: %s>", i,
- kConvertAndNormalizeCases[i].encoded,
- kConvertAndNormalizeCases[i].codepage_name));
- bool success = ConvertToUtf8AndNormalize(
- kConvertAndNormalizeCases[i].encoded,
- kConvertAndNormalizeCases[i].codepage_name, &result);
- EXPECT_EQ(kConvertAndNormalizeCases[i].expected_success, success);
- EXPECT_EQ(kConvertAndNormalizeCases[i].expected_value, result);
- }
- }
- } // namespace base
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