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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *  http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.any23.source;
    19
    20  import java.io.BufferedInputStream;
    21  import java.io.ByteArrayOutputStream;
    22  import java.io.File;
    23  import java.io.FileInputStream;
    24  import java.io.IOException;
    25  import java.io.InputStream;
    26  import java.nio.charset.StandardCharsets;
    27
    28  /**
    29   * File implementation of {@link DocumentSource}.
    30   */
    31  public class FileDocumentSource implements DocumentSource {
    32
    33      private final File file;
    34
    35      private final String uri;
    36
    37      public FileDocumentSource(File file) {
    38          this.file = file;
    39          this.uri = file.toURI().toString();
    40      }
    41
    42      public FileDocumentSource(File file, String baseIRI) {
    43          this.file = file;
    44          this.uri = baseIRI;
    45      }
    46
    47      public InputStream openInputStream() throws IOException {
    48          return new BufferedInputStream(new FileInputStream(file));
    49      }
    50
    51      public long getContentLength() {
    52          return file.length();
    53      }
    54
    55      public String getDocumentIRI() {
    56          return uri;
    57      }
    58
    59      public String getContentType() {
    60          return null;
    61      }
    62
    63      public boolean isLocal() {
    64          return true;
    65      }
    66
    67      public String readStream() throws IOException {
    68          final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    69          InputStream is = openInputStream();
    70          try {
    71              int c;
    72              while ((c = is.read()) != -1) {
    73                  baos.write(c);
    74              }
    75          } finally {
    76              is.close();
    77          }
    78          return new String(baos.toByteArray(), StandardCharsets.UTF_8);
    79      }
    80  }