| /* |
| * 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.types.mappers; |
| |
| import java.io.File; |
| |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.util.FileNameMapper; |
| |
| /** |
| * A mapper that strips of the a configurable number of leading |
| * directories from a file name. |
| * |
| * <p>This mapper was inspired by a user-list thread that mentioned |
| * wget's --cut-dirs option.</p> |
| * |
| * @see <a href="http://mail-archives.apache.org/mod_mbox/ant-user/201009.mbox/%3C51772743BEA5D44A9EA5BF52AADDD6FB010E96F6@hammai008.delphi.local%3E"> |
| * simplify copy with regexpmapper</a> |
| */ |
| public class CutDirsMapper implements FileNameMapper { |
| private int dirs = 0; |
| |
| /** |
| * The number of leading directories to cut. |
| * @param dirs int |
| */ |
| public void setDirs(final int dirs) { |
| this.dirs = dirs; |
| } |
| |
| /** |
| * Empty implementation. |
| * @param ignore ignored. |
| */ |
| public void setFrom(final String ignore) { |
| } |
| |
| /** |
| * Empty implementation. |
| * @param ignore ignored. |
| */ |
| public void setTo(final String ignore) { |
| } |
| |
| /** {@inheritDoc}. */ |
| public String[] mapFileName(final String sourceFileName) { |
| if (dirs <= 0) { |
| throw new BuildException("dirs must be set to a positive number"); |
| } |
| final char fileSep = File.separatorChar; |
| if (sourceFileName == null) { |
| return null; |
| } |
| final String fileSepCorrected = |
| sourceFileName.replace('/', fileSep).replace('\\', fileSep); |
| int nthMatch = fileSepCorrected.indexOf(fileSep); |
| for (int n = 1; nthMatch > -1 && n < dirs; n++) { |
| nthMatch = fileSepCorrected.indexOf(fileSep, nthMatch + 1); |
| } |
| if (nthMatch == -1) { |
| return null; |
| } |
| return new String[] {sourceFileName.substring(nthMatch + 1)}; |
| } |
| } |