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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  package org.apache.commons.imaging.formats.rgbe;
18  
19  import java.io.IOException;
20  import java.io.InputStream;
21  
22  import org.apache.commons.imaging.ImagingException;
23  
24  final class InfoHeaderReader {
25      private final InputStream is;
26  
27      InfoHeaderReader(final InputStream is) {
28          this.is = is;
29      }
30  
31      private char read() throws IOException {
32          final int result = is.read();
33          if (result < 0) {
34              throw new ImagingException("HDR: Unexpected EOF");
35          }
36          return (char) result;
37      }
38  
39      public String readNextLine() throws IOException {
40          final StringBuilder buffer = new StringBuilder();
41          char c;
42  
43          while ((c = read()) != '\n') {
44              buffer.append(c);
45          }
46  
47          return buffer.toString();
48      }
49  }