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 }