Use upstream libaddressinput in Chrome.

third_party/libaddressinput/chromium/canonicalize_string.cc

-// Copyright 2014 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 "cpp/src/util/canonicalize_string.h"
-
-#include "base/logging.h"
-#include "cpp/include/libaddressinput/util/scoped_ptr.h"
-#include "third_party/icu/source/common/unicode/errorcode.h"
-#include "third_party/icu/source/common/unicode/locid.h"
-#include "third_party/icu/source/common/unicode/unistr.h"
-#include "third_party/icu/source/common/unicode/utypes.h"
-#include "third_party/icu/source/i18n/unicode/coll.h"
-
-namespace i18n {
-namespace addressinput {
-
-namespace {
-
-class ChromeStringCanonicalizer : public StringCanonicalizer {
- public:
-  ChromeStringCanonicalizer()
-      : error_code_(U_ZERO_ERROR),
-        collator_(
-            icu::Collator::createInstance(
-                icu::Locale::getRoot(), error_code_)) {
-    collator_->setStrength(icu::Collator::PRIMARY);
-    DCHECK(U_SUCCESS(error_code_));
-  }
-
-  virtual ~ChromeStringCanonicalizer() {}
-
-  // StringCanonicalizer implementation.
-  virtual std::string CanonicalizeString(const std::string& original) {
-    // Returns a canonical version of the string that can be used for comparing
-    // strings regardless of diacritics and capitalization.
-    //    CanonicalizeString("Texas") == CanonicalizeString("T\u00E9xas");
-    //    CanonicalizeString("Texas") == CanonicalizeString("teXas");
-    //    CanonicalizeString("Texas") != CanonicalizeString("California");
-    //
-    // The output is not human-readable.
-    //    CanonicalizeString("Texas") != "Texas";
-    icu::UnicodeString icu_str(
-        original.c_str(), static_cast<int32_t>(original.length()));
-    int32_t buffer_size = collator_->getSortKey(icu_str, NULL, 0);
-    scoped_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
-    DCHECK(buffer.get());
-    int32_t filled_size =
-        collator_->getSortKey(icu_str, buffer.get(), buffer_size);
-    DCHECK_EQ(buffer_size, filled_size);
-    return std::string(reinterpret_cast<const char*>(buffer.get()));
-  }
-
- private:
-  UErrorCode error_code_;
-  scoped_ptr<icu::Collator> collator_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChromeStringCanonicalizer);
-};
-
-}  // namespace
-
-// static
-scoped_ptr<StringCanonicalizer> StringCanonicalizer::Build() {
-  return scoped_ptr<StringCanonicalizer>(new ChromeStringCanonicalizer);
-}
-
-}  // namespace addressinput
-}  // namespace i18n