1 /*
2 * Copyright 2009 Ange Optimization ApS
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package eu.simuline.octave.io.impl;
17
18 import java.io.BufferedReader;
19
20 import eu.simuline.octave.io.OctaveIO;
21 import eu.simuline.octave.io.spi.OctaveDataReader;
22 import eu.simuline.octave.type.OctaveComplex;
23 import eu.simuline.octave.util.StringUtil;
24
25 /**
26 * The reader for the octave type "complex scalar" with 'double' components
27 * reading an {@link OctaveComplex} from a {@link BufferedReader}.
28 *
29 * Format is:
30 *
31 * <pre>
32 * # type: complex scalar
33 * (1.2,3.4)
34 * </pre>
35 */
36 public final class ComplexScalarReader extends OctaveDataReader {
37
38 @Override
39 public String octaveType() {
40 return "complex scalar";
41 }
42
43 // **** parsing of complex numbers shall be done in StringUtil centralized
44 @Override
45 public OctaveComplex read(final BufferedReader reader) {
46 final String line = OctaveIO.readerReadLine(reader);
47 final int commaIndex = line.indexOf(',');
48 final double real = StringUtil
49 .parseDouble(line.substring(1, commaIndex));
50 final double imag = StringUtil
51 .parseDouble(line.substring(commaIndex + 1, line.length() - 1));
52 final OctaveComplexplex.html#OctaveComplex">OctaveComplex complex = new OctaveComplex(1, 1);
53 complex.setReal(real, 1, 1);
54 complex.setImag(imag, 1, 1);
55 return complex;
56 }
57
58 }