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43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
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// Copyright 2016 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 "base/i18n/character_encoding.h"
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#include "base/macros.h"
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#include "third_party/icu/source/common/unicode/ucnv.h"
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namespace base {
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namespace {
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// An array of all supported canonical encoding names.
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const char* const kCanonicalEncodingNames[] = {
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"Big5", "EUC-JP", "EUC-KR", "gb18030",
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"GBK", "IBM866", "ISO-2022-JP", "ISO-8859-10",
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"ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "ISO-8859-16",
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"ISO-8859-2", "ISO-8859-3", "ISO-8859-4", "ISO-8859-5",
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"ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-8-I",
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"KOI8-R", "KOI8-U", "macintosh", "Shift_JIS",
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"UTF-16LE", "UTF-8", "windows-1250", "windows-1251",
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"windows-1252", "windows-1253", "windows-1254", "windows-1255",
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"windows-1256", "windows-1257", "windows-1258", "windows-874"};
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} // namespace
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std::string GetCanonicalEncodingNameByAliasName(const std::string& alias_name) {
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for (auto* encoding_name : kCanonicalEncodingNames) {
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if (alias_name == encoding_name)
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return alias_name;
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}
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static const char* kStandards[3] = {"HTML", "MIME", "IANA"};
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for (auto* standard : kStandards) {
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UErrorCode error_code = U_ZERO_ERROR;
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const char* canonical_name =
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ucnv_getStandardName(alias_name.c_str(), standard, &error_code);
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if (U_SUCCESS(error_code) && canonical_name)
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return canonical_name;
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}
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return std::string();
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}
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} // namespace base
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