diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/PrefixLines.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/PrefixLines.java | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/PrefixLines.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/PrefixLines.java deleted file mode 100644 index 324397e8..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/PrefixLines.java +++ /dev/null @@ -1,164 +0,0 @@ -/* - * 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.apache.tools.ant.filters; - -import java.io.IOException; -import java.io.Reader; - -import org.apache.tools.ant.types.Parameter; - -/** - * Attaches a prefix to every line. - * - * Example: - * <pre><prefixlines prefix="Foo"/></pre> - * - * Or: - * - * <pre><filterreader classname="org.apache.tools.ant.filters.PrefixLines"> - * <param name="prefix" value="Foo"/> - * </filterreader></pre> - * - */ -public final class PrefixLines - extends BaseParamFilterReader - implements ChainableReader { - /** Parameter name for the prefix. */ - private static final String PREFIX_KEY = "prefix"; - - /** The prefix to be used. */ - private String prefix = null; - - /** Data that must be read from, if not null. */ - private String queuedData = null; - - /** - * Constructor for "dummy" instances. - * - * @see BaseFilterReader#BaseFilterReader() - */ - public PrefixLines() { - super(); - } - - /** - * Creates a new filtered reader. - * - * @param in A Reader object providing the underlying stream. - * Must not be <code>null</code>. - */ - public PrefixLines(final Reader in) { - super(in); - } - - /** - * Returns the next character in the filtered stream. One line is read - * from the original input, and the prefix added. The resulting - * line is then used until it ends, at which point the next original line - * is read, etc. - * - * @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); - } - - int ch = -1; - - if (queuedData != null && queuedData.length() == 0) { - queuedData = null; - } - - if (queuedData != null) { - ch = queuedData.charAt(0); - queuedData = queuedData.substring(1); - if (queuedData.length() == 0) { - queuedData = null; - } - } else { - queuedData = readLine(); - if (queuedData == null) { - ch = -1; - } else { - if (prefix != null) { - queuedData = prefix + queuedData; - } - return read(); - } - } - return ch; - } - - /** - * Sets the prefix to add at the start of each input line. - * - * @param prefix The prefix to add at the start of each input line. - * May be <code>null</code>, in which case no prefix - * is added. - */ - public void setPrefix(final String prefix) { - this.prefix = prefix; - } - - /** - * Returns the prefix which will be added at the start of each input line. - * - * @return the prefix which will be added at the start of each input line - */ - private String getPrefix() { - return prefix; - } - - /** - * Creates a new PrefixLines filter 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) { - PrefixLines newFilter = new PrefixLines(rdr); - newFilter.setPrefix(getPrefix()); - newFilter.setInitialized(true); - return newFilter; - } - - /** - * Initializes the prefix if it is available from the parameters. - */ - private void initialize() { - Parameter[] params = getParameters(); - if (params != null) { - for (int i = 0; i < params.length; i++) { - if (PREFIX_KEY.equals(params[i].getName())) { - prefix = params[i].getValue(); - break; - } - } - } - } -} |