diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/StripLineComments.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/StripLineComments.java | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/StripLineComments.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/StripLineComments.java deleted file mode 100644 index e3d240ba..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/filters/StripLineComments.java +++ /dev/null @@ -1,237 +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 java.util.Vector; - -import org.apache.tools.ant.types.Parameter; - -/** - * This filter strips line comments. - * - * Example: - * - * <pre><striplinecomments> - * <comment value="#"/> - * <comment value="--"/> - * <comment value="REM "/> - * <comment value="rem "/> - * <comment value="//"/> - * </striplinecomments></pre> - * - * Or: - * - * <pre><filterreader - * classname="org.apache.tools.ant.filters.StripLineComments"> - * <param type="comment" value="#"/> - * <param type="comment" value="--"/> - * <param type="comment" value="REM "/> - * <param type="comment" value="rem "/> - * <param type="comment" value="//"/> - * </filterreader></pre> - * - */ -public final class StripLineComments - extends BaseParamFilterReader - implements ChainableReader { - /** Parameter name for the comment prefix. */ - private static final String COMMENTS_KEY = "comment"; - - /** Vector that holds the comment prefixes. */ - private Vector<String> comments = new Vector<String>(); - - /** The line that has been read ahead. */ - private String line = null; - - /** - * Constructor for "dummy" instances. - * - * @see BaseFilterReader#BaseFilterReader() - */ - public StripLineComments() { - super(); - } - - /** - * Creates a new filtered reader. - * - * @param in A Reader object providing the underlying stream. - * Must not be <code>null</code>. - */ - public StripLineComments(final Reader in) { - super(in); - } - - /** - * Returns the next character in the filtered stream, only including - * lines from the original stream which don't start with any of the - * specified comment prefixes. - * - * @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 (line != null) { - ch = line.charAt(0); - if (line.length() == 1) { - line = null; - } else { - line = line.substring(1); - } - } else { - line = readLine(); - final int commentsSize = comments.size(); - - while (line != null) { - for (int i = 0; i < commentsSize; i++) { - String comment = comments.elementAt(i); - if (line.startsWith(comment)) { - line = null; - break; - } - } - - if (line == null) { - // line started with comment - line = readLine(); - } else { - break; - } - } - - if (line != null) { - return read(); - } - } - - return ch; - } - - /** - * Adds a <code>comment</code> element to the list of prefixes. - * - * @param comment The <code>comment</code> element to add to the - * list of comment prefixes to strip. Must not be <code>null</code>. - */ - public void addConfiguredComment(final Comment comment) { - comments.addElement(comment.getValue()); - } - - /** - * Sets the list of comment prefixes to strip. - * - * @param comments A list of strings, each of which is a prefix - * for a comment line. Must not be <code>null</code>. - */ - private void setComments(final Vector<String> comments) { - this.comments = comments; - } - - /** - * Returns the list of comment prefixes to strip. - * - * @return the list of comment prefixes to strip. - */ - private Vector<String> getComments() { - return comments; - } - - /** - * Creates a new StripLineComments 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) { - StripLineComments newFilter = new StripLineComments(rdr); - newFilter.setComments(getComments()); - newFilter.setInitialized(true); - return newFilter; - } - - /** - * Parses the parameters to set the comment prefixes. - */ - private void initialize() { - Parameter[] params = getParameters(); - if (params != null) { - for (int i = 0; i < params.length; i++) { - if (COMMENTS_KEY.equals(params[i].getType())) { - comments.addElement(params[i].getValue()); - } - } - } - } - - /** - * The class that holds a comment representation. - */ - public static class Comment { - - /** The prefix for a line comment. */ - private String value; - - /** - * Sets the prefix for this type of line comment. - * - * @param comment The prefix for a line comment of this type. - * Must not be <code>null</code>. - */ - public final void setValue(String comment) { - if (value != null) { - throw new IllegalStateException("Comment value already set."); - } - value = comment; - } - - /** - * Returns the prefix for this type of line comment. - * - * @return the prefix for this type of line comment. - */ - public final String getValue() { - return value; - } - - /** - * Alt. syntax to set the prefix for this type of line comment. - * - * @param comment The prefix for a line comment of this type. - * Must not be <code>null</code>. - */ - public void addText(String comment) { - setValue(comment); - } - } -} |