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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/filters/HeadFilter.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.filters; import java.io.IOException; import java.io.Reader; import org.apache.tools.ant.types.Parameter; import org.apache.tools.ant.util.LineTokenizer; /** * Reads the first <code>n</code> lines of a stream. * (Default is first 10 lines.) * <p> * Example: * <pre><headfilter lines="3"/></pre> * Or: * <pre><filterreader classname="org.apache.tools.ant.filters.HeadFilter"> * <param name="lines" value="3"/> * </filterreader></pre> * */ public final class HeadFilter extends BaseParamFilterReader implements ChainableReader { /** Parameter name for the number of lines to be returned. */ private static final String LINES_KEY = "lines"; /** Parameter name for the number of lines to be skipped. */ private static final String SKIP_KEY = "skip"; /** Number of lines currently read in. */ private long linesRead = 0; /** Default number of lines to show */ private static final int DEFAULT_NUM_LINES = 10; /** Number of lines to be returned in the filtered stream. */ private long lines = DEFAULT_NUM_LINES; /** Number of lines to be skipped. */ private long skip = 0; /** A line tokenizer */ private LineTokenizer lineTokenizer = null; /** the current line from the input stream */ private String line = null; /** the position in the current line */ private int linePos = 0; /** Whether this filter is finished */ private boolean eof; /** * Constructor for "dummy" instances. * * @see BaseFilterReader#BaseFilterReader() */ public HeadFilter() { super(); } /** * Creates a new filtered reader. * * @param in A Reader object providing the underlying stream. * Must not be <code>null</code>. */ public HeadFilter(final Reader in) { super(in); lineTokenizer = new LineTokenizer(); lineTokenizer.setIncludeDelims(true); } /** * Returns the next character in the filtered stream. If the desired * number of lines have already been read, the resulting stream is * effectively at an end. Otherwise, the next character from the * underlying stream is read and returned. * * @return the next character in the resulting stream, or -1 * if the end of the resulting stream has been reached * * @exception IOException if the underlying stream throws an IOException * during reading */ public int read() throws IOException { if (!getInitialized()) { initialize(); setInitialized(true); } while (line == null || line.isEmpty()) { line = lineTokenizer.getToken(in); if (line == null) { return -1; } line = headFilter(line); if (eof) { return -1; } linePos = 0; } int ch = line.charAt(linePos); linePos++; if (linePos == line.length()) { line = null; } return ch; } /** * Sets the number of lines to be returned in the filtered stream. * * @param lines the number of lines to be returned in the filtered stream */ public void setLines(final long lines) { this.lines = lines; } /** * Returns the number of lines to be returned in the filtered stream. * * @return the number of lines to be returned in the filtered stream */ private long getLines() { return lines; } /** * Sets the number of lines to be skipped in the filtered stream. * * @param skip the number of lines to be skipped in the filtered stream */ public void setSkip(final long skip) { this.skip = skip; } /** * Returns the number of lines to be skipped in the filtered stream. * * @return the number of lines to be skipped in the filtered stream */ private long getSkip() { return skip; } /** * Creates a new HeadFilter using the passed in * Reader for instantiation. * * @param rdr A Reader object providing the underlying stream. * Must not be <code>null</code>. * * @return a new filter based on this configuration, but filtering * the specified reader */ public Reader chain(final Reader rdr) { HeadFilter newFilter = new HeadFilter(rdr); newFilter.setLines(getLines()); newFilter.setSkip(getSkip()); newFilter.setInitialized(true); return newFilter; } /** * Scans the parameters list for the "lines" parameter and uses * it to set the number of lines to be returned in the filtered stream. * also scan for skip parameter. */ private void initialize() { Parameter[] params = getParameters(); if (params != null) { for (Parameter param : params) { final String paramName = param.getName(); if (LINES_KEY.equals(paramName)) { lines = Long.parseLong(param.getValue()); } else if (SKIP_KEY.equals(paramName)) { skip = Long.parseLong(param.getValue()); } } } } /** * implements a head filter on the input stream */ private String headFilter(String line) { linesRead++; if (skip > 0) { if ((linesRead - 1) < skip) { return null; } } if (lines > 0) { if (linesRead > (lines + skip)) { eof = true; return null; } } return line; } }
⏎ org/apache/tools/ant/filters/HeadFilter.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, 110383👍, 0💬
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