blob: a1068c3c52141627e7985cda3f9a4d2fb4ae7a69 [file] [log] [blame]
// Copyright 2016 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/character_encoding.h"
#include "base/macros.h"
#include "third_party/icu/source/common/unicode/ucnv.h"
namespace base {
namespace {
// An array of all supported canonical encoding names.
const char* const kCanonicalEncodingNames[] = {
"Big5", "EUC-JP", "EUC-KR", "gb18030",
"GBK", "IBM866", "ISO-2022-JP", "ISO-8859-10",
"ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "ISO-8859-16",
"ISO-8859-2", "ISO-8859-3", "ISO-8859-4", "ISO-8859-5",
"ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-8-I",
"KOI8-R", "KOI8-U", "macintosh", "Shift_JIS",
"UTF-16LE", "UTF-8", "windows-1250", "windows-1251",
"windows-1252", "windows-1253", "windows-1254", "windows-1255",
"windows-1256", "windows-1257", "windows-1258", "windows-874"};
} // namespace
std::string GetCanonicalEncodingNameByAliasName(const std::string& alias_name) {
for (auto* encoding_name : kCanonicalEncodingNames) {
if (alias_name == encoding_name)
return alias_name;
static const char* kStandards[3] = {"HTML", "MIME", "IANA"};
for (auto* standard : kStandards) {
UErrorCode error_code = U_ZERO_ERROR;
const char* canonical_name =
ucnv_getStandardName(alias_name.c_str(), standard, &error_code);
if (U_SUCCESS(error_code) && canonical_name)
return canonical_name;
return std::string();
} // namespace base