56 lines
2.3 KiB
Java
56 lines
2.3 KiB
Java
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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////////////////////////////////////////////////////////////////////////////////
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import java.nio.charset.StandardCharsets;
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import java.io.ByteArrayInputStream;
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import java.io.UncheckedIOException;
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import org.apache.commons.geometry.io.core.input.StreamGeometryInput;
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import org.apache.commons.geometry.io.euclidean.threed.BoundaryReadHandler3D;
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import org.apache.commons.geometry.io.euclidean.threed.stl.StlBoundaryReadHandler3D;
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import org.apache.commons.numbers.core.Precision;
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public class GeometryStlTextFuzzer {
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public static void fuzzerTestOneInput(final byte[] data) {
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// prepend the "solid" STL keyword to the input to ensure it is interpreted
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// as text STL input
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final byte[] dataWithPrefix = join("solid ".getBytes(StandardCharsets.US_ASCII), data);
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try {
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final BoundaryReadHandler3D handler = new StlBoundaryReadHandler3D();
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final Precision.DoubleEquivalence precision = Precision.doubleEquivalenceOfEpsilon(1e-20);
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// check standard read
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handler.read(new StreamGeometryInput(new ByteArrayInputStream(dataWithPrefix)), precision);
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// check mesh read
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handler.readTriangleMesh(new StreamGeometryInput(new ByteArrayInputStream(dataWithPrefix)), precision);
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} catch (UncheckedIOException | IllegalArgumentException | IllegalStateException ignored) {
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// expected exception types; ignore
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}
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}
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private static byte[] join(final byte[] a, final byte[] b) {
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final byte[] result = new byte[a.length + b.length];
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System.arraycopy(a, 0, result, 0, a.length);
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System.arraycopy(b, 0, result, a.length, b.length);
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return result;
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}
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}
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