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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  class InfoHeaderReader {
23      private final InputStream is;
24  
25      InfoHeaderReader(final InputStream is) {
26          this.is = is;
27      }
28  
29      private char read() throws IOException {
30          final int result = is.read();
31          if (result < 0) {
32              throw new IOException("HDR: Unexpected EOF");
33          }
34          return (char) result;
35      }
36  
37      public String readNextLine() throws IOException {
38          final StringBuilder buffer = new StringBuilder();
39          char c;
40  
41          while ((c = read()) != '\n') {
42              buffer.append(c);
43          }
44  
45          return buffer.toString();
46      }
47  }