| /* |
| * 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.ant.props.stringops; |
| |
| import org.apache.tools.ant.PropertyHelper; |
| import org.apache.tools.ant.util.regexp.Regexp; |
| |
| /** |
| * Replace operation--handles 'replace all' and 'replace first' alike. |
| */ |
| public class ReplaceOperation extends PatternOperation { |
| private static final String ESCAPE_SLASH = "\\\\/"; |
| private static final String NOT_SLASH = "[^/]"; |
| private static final String WORD = "(?:" + ESCAPE_SLASH + "|" + NOT_SLASH + ")*"; |
| private static final String RE = "^(" + WORD + ")(//?)(" + WORD + ")/(" + WORD + ")$"; |
| |
| /** |
| * Construct a new ReplaceOperation. |
| */ |
| protected ReplaceOperation() { |
| super(RE); |
| } |
| |
| /** {@inheritDoc} */ |
| protected final Object evaluate(String[] groups, PropertyHelper propertyHelper) { |
| Object value = propertyHelper.getProperty(groups[1]); |
| int replaceOption = "//".equals(groups[2]) ? Regexp.REPLACE_ALL : Regexp.REPLACE_FIRST; |
| StringBuffer sb = new StringBuffer(groups[3]); |
| convertToRegex(sb); |
| return value == null ? null : createRegexp(sb.toString(), propertyHelper.getProject()) |
| .substitute(value.toString(), groups[4], replaceOption); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @see org.apache.ant.props.stringops.PatternOperation#convertToRegex(java.lang.StringBuffer) |
| */ |
| protected void convertToRegex(StringBuffer sb) { |
| deEscape('/', sb); |
| super.convertToRegex(sb); |
| } |
| |
| } |