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