chromium/base/i18n/case_conversion.cc

// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/i18n/case_conversion.h"

#include <stdint.h>

#include <string>
#include <string_view>

#include "base/numerics/safe_conversions.h"
#include "base/strings/string_util.h"
#include "third_party/icu/source/common/unicode/uchar.h"
#include "third_party/icu/source/common/unicode/unistr.h"
#include "third_party/icu/source/common/unicode/ustring.h"

namespace base {
namespace i18n {

namespace {

// Provides a uniform interface for upper/lower/folding which take take
// slightly varying parameters.
CaseMapperFunction;

int32_t ToUpperMapper(UChar* dest, int32_t dest_capacity,
                      const UChar* src, int32_t src_length,
                      UErrorCode* error) { … }

int32_t ToLowerMapper(UChar* dest, int32_t dest_capacity,
                      const UChar* src, int32_t src_length,
                      UErrorCode* error) { … }

int32_t FoldCaseMapper(UChar* dest, int32_t dest_capacity,
                       const UChar* src, int32_t src_length,
                       UErrorCode* error) { … }

// Provides similar functionality as UnicodeString::caseMap but on
// std::u16string.
std::u16string CaseMap(std::u16string_view string,
                       CaseMapperFunction case_mapper) { … }

}  // namespace

std::u16string ToLower(std::u16string_view string) { … }

std::u16string ToUpper(std::u16string_view string) { … }

std::u16string FoldCase(std::u16string_view string) { … }

}  // namespace i18n
}  // namespace base