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69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
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// Copyright 2014 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 "net/base/net_string_util.h"
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#include "base/i18n/case_conversion.h"
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#include "base/i18n/i18n_constants.h"
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#include "base/i18n/icu_string_conversions.h"
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#include "base/strings/string_util.h"
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#include "third_party/icu/source/common/unicode/ucnv.h"
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namespace net {
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const char* const kCharsetLatin1 = base::kCodepageLatin1;
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bool ConvertToUtf8(const std::string& text, const char* charset,
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std::string* output) {
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output->clear();
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UErrorCode err = U_ZERO_ERROR;
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UConverter* converter(ucnv_open(charset, &err));
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if (U_FAILURE(err))
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return false;
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// A single byte in a legacy encoding can be expanded to 3 bytes in UTF-8.
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// A 'two-byte character' in a legacy encoding can be expanded to 4 bytes
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// in UTF-8. Therefore, the expansion ratio is 3 at most. Add one for a
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// trailing '\0'.
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size_t output_length = text.length() * 3 + 1;
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char* buf = base::WriteInto(output, output_length);
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output_length = ucnv_toAlgorithmic(UCNV_UTF8, converter, buf, output_length,
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text.data(), text.length(), &err);
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ucnv_close(converter);
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if (U_FAILURE(err)) {
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output->clear();
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return false;
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}
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output->resize(output_length);
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return true;
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}
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bool ConvertToUtf8AndNormalize(const std::string& text, const char* charset,
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std::string* output) {
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return base::ConvertToUtf8AndNormalize(text, charset, output);
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}
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bool ConvertToUTF16(const std::string& text, const char* charset,
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base::string16* output) {
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return base::CodepageToUTF16(text, charset,
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base::OnStringConversionError::FAIL, output);
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}
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bool ConvertToUTF16WithSubstitutions(const std::string& text,
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const char* charset,
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base::string16* output) {
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return base::CodepageToUTF16(text, charset,
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base::OnStringConversionError::SUBSTITUTE,
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output);
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}
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bool ToUpper(const base::string16& str, base::string16* output) {
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*output = base::i18n::ToUpper(str);
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return true;
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}
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} // namespace net
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