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Apache Ant Source Code Files
Apache Ant Source Code Files are inside the Apache Ant source package file like apache-ant-1.10.10-src.zip. Unzip the source package file and go to the "src/main" sub-directory, you will see source code files.
Here is the list of Java source code files of the Apache Ant 1.10.10 in \Users\fyicenter\apache-ant-1.10.10\src\main:
✍: FYIcenter.com
⏎ org/apache/tools/ant/taskdefs/Truncate.java
/* * 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 * * https://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.apache.tools.ant.taskdefs; import java.io.File; import java.io.IOException; import java.io.RandomAccessFile; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.Project; import org.apache.tools.ant.Task; import org.apache.tools.ant.types.Path; import org.apache.tools.ant.types.Resource; import org.apache.tools.ant.types.ResourceCollection; import org.apache.tools.ant.types.resources.FileProvider; import org.apache.tools.ant.types.resources.FileResource; import org.apache.tools.ant.util.FileUtils; /** * Set the length of one or more files, as the intermittently available * <code>truncate</code> Unix utility/function. * @since Ant 1.7.1 */ public class Truncate extends Task { private static final int BUFFER_SIZE = 1024; private static final Long ZERO = 0L; private static final String NO_CHILD = "No files specified."; private static final String INVALID_LENGTH = "Cannot truncate to length "; private static final String READ_WRITE = "rw"; private static final FileUtils FILE_UTILS = FileUtils.getFileUtils(); private static final byte[] FILL_BUFFER = new byte[BUFFER_SIZE]; private Path path; private boolean create = true; private boolean mkdirs = false; private Long length; private Long adjust; /** * Set a single target File. * @param f the single File */ public void setFile(File f) { add(new FileResource(f)); } /** * Add a nested (filesystem-only) ResourceCollection. * @param rc the ResourceCollection to add. */ public void add(ResourceCollection rc) { getPath().add(rc); } /** * Set the amount by which files' lengths should be adjusted. * It is permissible to append K / M / G / T / P. * @param adjust (positive or negative) adjustment amount. */ public void setAdjust(Long adjust) { this.adjust = adjust; } /** * Set the length to which files should be set. * It is permissible to append K / M / G / T / P. * @param length (positive) adjustment amount. */ public void setLength(Long length) { this.length = length; if (length != null && length < 0) { throw new BuildException(INVALID_LENGTH + length); } } /** * Set whether to create nonexistent files. * @param create boolean, default <code>true</code>. */ public void setCreate(boolean create) { this.create = create; } /** * Set whether, when creating nonexistent files, nonexistent directories * should also be created. * @param mkdirs boolean, default <code>false</code>. */ public void setMkdirs(boolean mkdirs) { this.mkdirs = mkdirs; } /** {@inheritDoc}. */ public void execute() { if (length != null && adjust != null) { throw new BuildException( "length and adjust are mutually exclusive options"); } if (length == null && adjust == null) { length = ZERO; } if (path == null) { throw new BuildException(NO_CHILD); } for (Resource r : path) { File f = r.as(FileProvider.class).getFile(); if (shouldProcess(f)) { process(f); } } } private boolean shouldProcess(File f) { if (f.isFile()) { return true; } if (!create) { return false; } Exception exception = null; try { if (FILE_UTILS.createNewFile(f, mkdirs)) { return true; } } catch (IOException e) { exception = e; } String msg = "Unable to create " + f; if (exception == null) { log(msg, Project.MSG_WARN); return false; } throw new BuildException(msg, exception); } private void process(File f) { long len = f.length(); long newLength = length == null ? len + adjust : length; if (len == newLength) { //nothing to do! return; } RandomAccessFile raf = null; try { raf = new RandomAccessFile(f, READ_WRITE); //NOSONAR } catch (Exception e) { throw new BuildException("Could not open " + f + " for writing", e); } try { if (newLength > len) { long pos = len; raf.seek(pos); while (pos < newLength) { long writeCount = Math.min(FILL_BUFFER.length, newLength - pos); raf.write(FILL_BUFFER, 0, (int) writeCount); pos += writeCount; } } else { raf.setLength(newLength); } } catch (IOException e) { throw new BuildException("Exception working with " + raf, e); } finally { try { raf.close(); } catch (IOException e) { log("Caught " + e + " closing " + raf, Project.MSG_WARN); } } } private synchronized Path getPath() { if (path == null) { path = new Path(getProject()); } return path; } }
⏎ org/apache/tools/ant/taskdefs/Truncate.java
Or download all of them as a single archive file:
File name: apache-ant-1.10.10-fyi.zip File size: 2392938 bytes Release date: 2021-04-17 Download
⇐ Download Apache Ant Source Package
2021-07-10, 110877👍, 0💬
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