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Calculate CRC32 for license mapping at build time instead of hardcoding
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60
nbbuild/antsrc/org/netbeans/nbbuild/FileCRC32Calculator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.netbeans.nbbuild; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.nio.MappedByteBuffer; | ||
| import java.nio.channels.FileChannel; | ||
| import java.nio.file.StandardOpenOption; | ||
| import java.util.zip.CRC32; | ||
| import org.apache.tools.ant.BuildException; | ||
| import org.apache.tools.ant.Task; | ||
|
|
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| /** | ||
| * Calculate the CRC32 checksum for the given file. The resulting long value | ||
| * is converted to a string and placed in the property denoted with the name | ||
| * of {@code property}. | ||
| */ | ||
| public class FileCRC32Calculator extends Task { | ||
|
|
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| private File file; | ||
| public void setFile(File file) { | ||
| this.file = file; | ||
| } | ||
|
|
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| private String property; | ||
| public void setProperty(String property) { | ||
| this.property = property; | ||
| } | ||
|
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| public @Override void execute() throws BuildException { | ||
|
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| try { | ||
| CRC32 crc32 = new CRC32(); | ||
| try(FileChannel channel = FileChannel.open(file.toPath(), StandardOpenOption.READ)) { | ||
| MappedByteBuffer mbb = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size()); | ||
| crc32.update(mbb); | ||
| } | ||
| getProject().setProperty(property, Long.toString(crc32.getValue())); | ||
| } catch (IOException ex) { | ||
| throw new BuildException(ex); | ||
| } | ||
| } | ||
| } |
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