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.geometry.io.euclidean.threed.stl;
18
19 import java.nio.charset.Charset;
20
21 import org.apache.commons.geometry.io.core.GeometryFormat;
22 import org.apache.commons.geometry.io.core.input.GeometryInput;
23 import org.apache.commons.geometry.io.core.internal.GeometryIOUtils;
24 import org.apache.commons.geometry.io.euclidean.threed.AbstractBoundaryReadHandler3D;
25 import org.apache.commons.geometry.io.euclidean.threed.FacetDefinitionReader;
26 import org.apache.commons.geometry.io.euclidean.threed.GeometryFormat3D;
27
28 /** {@link org.apache.commons.geometry.io.euclidean.threed.BoundaryReadHandler3D BoundaryReadHandler3D}
29 * implementation for reading STL data. Text input is read using the UTF-8 charset by default.
30 */
31 public class StlBoundaryReadHandler3D extends AbstractBoundaryReadHandler3D {
32
33 /** Default charset for reading text input. */
34 private Charset defaultCharset = StlConstants.DEFAULT_CHARSET;
35
36 /** {@inheritDoc} */
37 @Override
38 public GeometryFormat getFormat() {
39 return GeometryFormat3D.STL;
40 }
41
42 /** Get the input default charset, used if text input does not
43 * specify a charset.
44 * @return text input default charset
45 */
46 public Charset getDefaultCharset() {
47 return defaultCharset;
48 }
49
50 /** Set the input default charset, used if text input does not
51 * specify a charset.
52 * @param charset text input default charset
53 */
54 public void setDefaultCharset(final Charset charset) {
55 this.defaultCharset = charset;
56 }
57
58 /** {@inheritDoc} */
59 @Override
60 public FacetDefinitionReader facetDefinitionReader(final GeometryInput in) {
61 final Charset inputCharset = in.getCharset() != null ?
62 in.getCharset() :
63 defaultCharset;
64
65 return GeometryIOUtils.tryApplyCloseable(
66 inputStream -> StlFacetDefinitionReaders.create(inputStream, inputCharset),
67 in::getInputStream);
68 }
69 }