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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.any23.source;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;

/**
 * String implementation of {@link DocumentSource}.
 */
public class StringDocumentSource implements DocumentSource {

    private final String in;

    private final String contentType;

    private final String encoding;

    private final String uri;

    public StringDocumentSource(String in, String uri) {
        this(in, uri, null, null);
    }

    public StringDocumentSource(String in, String uri, String contentType) {
        this(in, uri, contentType, null);
    }

    public StringDocumentSource(String in, String uri, String contentType, String encoding) {
        this.in = in;
        this.uri = uri;
        this.contentType = contentType;
        this.encoding = encoding;
    }

    public InputStream openInputStream() throws IOException {
        if (encoding == null) {
            return new ByteArrayInputStream(in.getBytes(StandardCharsets.UTF_8));
        }
        return new ByteArrayInputStream(in.getBytes(encoding));
    }

    public long getContentLength() {
        return in.length();
    }

    public String getDocumentIRI() {
        return uri;
    }

    public String getContentType() {
        return contentType;
    }

    public boolean isLocal() {
        return true;
    }

}