[Payments] Format and validate phone number by using libphonenumber

chrome/browser/autofill/android/phone_number_util_android.cc

+// Copyright 2017 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 "chrome/browser/autofill/android/phone_number_util_android.h"
+
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "chrome/browser/browser_process.h"
+#include "components/autofill/core/browser/autofill_country.h"
+#include "jni/PhoneNumberUtil_jni.h"
+#include "third_party/libphonenumber/phonenumber_api.h"
+
+namespace autofill {
+
+namespace {
+  using ::base::android::ConvertJavaStringToUTF8;

[please use gerrit instead, 2017/03/14 19:38:29]

No indent.

[gogerald1, 2017/03/14 19:52:45]

Done.

+  using ::base::android::ConvertUTF8ToJavaString;
+  using ::base::android::JavaParamRef;
+  using ::base::android::ScopedJavaLocalRef;
+  using ::i18n::phonenumbers::PhoneNumber;
+  using ::i18n::phonenumbers::PhoneNumberUtil;
+}

[please use gerrit instead, 2017/03/14 19:38:28]

}  // namespace

[gogerald1, 2017/03/14 19:52:45]

Done.

+
+// Formats the given number |jphone_number| to
+// i18n::phonenumbers::PhoneNumberUtil::PhoneNumberFormat::INTERNATIONAL format
+// by using i18n::phonenumbers::PhoneNumberUtil::Format.
+ScopedJavaLocalRef<jstring> Format(
+    JNIEnv* env,
+    const base::android::JavaParamRef<jclass>& jcaller,
+    const JavaParamRef<jstring>& jphone_number) {
+  const std::string phone_number = ConvertJavaStringToUTF8(env, jphone_number);
+  const std::string default_region_code =
+      autofill::AutofillCountry::CountryCodeForLocale(
+          g_browser_process->GetApplicationLocale());
+
+  PhoneNumber parsed_number;
+  PhoneNumberUtil* phone_number_util = PhoneNumberUtil::GetInstance();
+  if (phone_number_util->Parse(phone_number, default_region_code,
+                               &parsed_number) !=
+      PhoneNumberUtil::NO_PARSING_ERROR) {
+    return ConvertUTF8ToJavaString(env, phone_number);
+  }
+
+  std::string formatted_number;
+  phone_number_util->Format(parsed_number,
+                            PhoneNumberUtil::PhoneNumberFormat::INTERNATIONAL,
+                            &formatted_number);
+
+  return ConvertUTF8ToJavaString(env, formatted_number);
+}
+
+// Checks whether the given number |jphone_number| is valid by using
+// i18n::phonenumbers::PhoneNumberUtil::IsValidNumber.
+jboolean IsValidNumber(JNIEnv* env,
+                       const base::android::JavaParamRef<jclass>& jcaller,
+                       const JavaParamRef<jstring>& jphone_number) {
+  const std::string phone_number = ConvertJavaStringToUTF8(env, jphone_number);
+  const std::string default_region_code =
+      autofill::AutofillCountry::CountryCodeForLocale(
+          g_browser_process->GetApplicationLocale());
+
+  PhoneNumber parsed_number;
+  PhoneNumberUtil* phone_number_util = PhoneNumberUtil::GetInstance();
+  if (phone_number_util->Parse(phone_number, default_region_code,
+                               &parsed_number) !=
+      PhoneNumberUtil::NO_PARSING_ERROR) {
+    return false;
+  }
+
+  return phone_number_util->IsValidNumber(parsed_number);
+}
+
+}  // namespace autofill
+
+// static
+bool RegisterPhoneNumberUtil(JNIEnv* env) {
+  return autofill::RegisterNativesImpl(env);
+}