google.registry.tldconfig.idn.IdnTableEnum.java Source code

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Here is the source code for google.registry.tldconfig.idn.IdnTableEnum.java

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// Copyright 2016 The Nomulus Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package google.registry.tldconfig.idn;

import static com.google.common.io.Resources.readLines;
import static java.nio.charset.StandardCharsets.UTF_8;

import com.google.common.base.Ascii;
import com.google.common.io.Resources;
import java.io.IOException;
import java.net.URL;

/** Wrapper enum that loads all {@link IdnTable} resources into memory. */
public enum IdnTableEnum {
    EXTENDED_LATIN, JA;

    private final IdnTable table;

    private IdnTableEnum() {
        this.table = load(Ascii.toLowerCase(name()));
    }

    public IdnTable getTable() {
        return table;
    }

    private static IdnTable load(String name) {
        try {
            URL resource = Resources.getResource(IdnTableEnum.class, name + ".txt");
            return IdnTable.createFrom(name, readLines(resource, UTF_8), LanguageValidator.get(name));
        } catch (IOException e) {
            throw new RuntimeException(e); // should never happen
        }
    }
}