be.fror.password.vault.core.VaultFormat.java Source code

Introduction

Here is the source code for be.fror.password.vault.core.VaultFormat.java

Source

/*
 * Copyright 2015 Olivier Grgoire.
 *
 * 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 be.fror.password.vault.core;

import be.fror.password.vault.model.Vault;

import com.google.common.io.ByteSink;
import com.google.common.io.ByteSource;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PushbackInputStream;

/**
 *
 * @author Olivier Grgoire
 */
public interface VaultFormat {

    public static Vault read(ByteSource source) throws IOException, UnsupportedFormatException {
        VaultFormat[] formats = { Vault1Format.INSTANCE };
        try (PushbackInputStream in = new PushbackInputStream(source.openStream())) {
            for (VaultFormat format : formats) {
                if (format.accept(in)) {
                    return format.read(in);
                }
            }
        }
        throw new UnsupportedFormatException(source.toString());
    }

    public static void write(ByteSink sink, Vault vault) throws IOException {
        try (OutputStream out = sink.openStream()) {
            Vault1Format.INSTANCE.write(out, vault);
        }
    }

    public boolean accept(PushbackInputStream in) throws IOException;

    public Vault read(InputStream in) throws IOException;

    public void write(OutputStream out, Vault vault) throws IOException;

}