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Ant example source code file (ContainsSelector.java)
The ContainsSelector.java source code/* * 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.selectors; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStreamReader; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.Project; import org.apache.tools.ant.types.Parameter; import org.apache.tools.ant.types.Resource; import org.apache.tools.ant.types.resources.FileResource; import org.apache.tools.ant.types.resources.selectors.ResourceSelector; import org.apache.tools.ant.util.FileUtils; /** * Selector that filters files/resources based on whether they contain a * particular string. * * @since 1.5 */ public class ContainsSelector extends BaseExtendSelector implements ResourceSelector { private String contains = null; private boolean casesensitive = true; private boolean ignorewhitespace = false; /** Key to used for parameterized custom selector */ public static final String EXPRESSION_KEY = "expression"; /** Used for parameterized custom selector */ public static final String CONTAINS_KEY = "text"; /** Used for parameterized custom selector */ public static final String CASE_KEY = "casesensitive"; /** Used for parameterized custom selector */ public static final String WHITESPACE_KEY = "ignorewhitespace"; /** * Creates a new <code>ContainsSelector instance. * */ public ContainsSelector() { } /** * @return a string describing this object */ public String toString() { StringBuffer buf = new StringBuffer("{containsselector text: "); buf.append('"').append(contains).append('"'); buf.append(" casesensitive: "); buf.append(casesensitive ? "true" : "false"); buf.append(" ignorewhitespace: "); buf.append(ignorewhitespace ? "true" : "false"); buf.append("}"); return buf.toString(); } /** * The string to search for within a file. * * @param contains the string that a file must contain to be selected. */ public void setText(String contains) { this.contains = contains; } /** * Whether to ignore case in the string being searched. * * @param casesensitive whether to pay attention to case sensitivity */ public void setCasesensitive(boolean casesensitive) { this.casesensitive = casesensitive; } /** * Whether to ignore whitespace in the string being searched. * * @param ignorewhitespace whether to ignore any whitespace * (spaces, tabs, etc.) in the searchstring */ public void setIgnorewhitespace(boolean ignorewhitespace) { this.ignorewhitespace = ignorewhitespace; } /** * When using this as a custom selector, this method will be called. * It translates each parameter into the appropriate setXXX() call. * * @param parameters the complete set of parameters for this selector */ public void setParameters(Parameter[] parameters) { super.setParameters(parameters); if (parameters != null) { for (int i = 0; i < parameters.length; i++) { String paramname = parameters[i].getName(); if (CONTAINS_KEY.equalsIgnoreCase(paramname)) { setText(parameters[i].getValue()); } else if (CASE_KEY.equalsIgnoreCase(paramname)) { setCasesensitive(Project.toBoolean( parameters[i].getValue())); } else if (WHITESPACE_KEY.equalsIgnoreCase(paramname)) { setIgnorewhitespace(Project.toBoolean( parameters[i].getValue())); } else { setError("Invalid parameter " + paramname); } } } } /** * Checks to make sure all settings are kosher. In this case, it * means that the pattern attribute has been set. * */ public void verifySettings() { if (contains == null) { setError("The text attribute is required"); } } /** * The heart of the matter. This is where the selector gets to decide * on the inclusion of a file in a particular fileset. * * @param basedir the base directory the scan is being done from * @param filename is the name of the file to check * @param file is a java.io.File object the selector can use * @return whether the file should be selected or not */ public boolean isSelected(File basedir, String filename, File file) { return isSelected(new FileResource(file)); } /** * The heart of the matter. This is where the selector gets to decide * on the inclusion of a Resource. * * @param r the Resource to check. * @return whether the Resource is selected. */ public boolean isSelected(Resource r) { // throw BuildException on error validate(); if (r.isDirectory()) { return true; } String userstr = contains; if (!casesensitive) { userstr = contains.toLowerCase(); } if (ignorewhitespace) { userstr = SelectorUtils.removeWhitespace(userstr); } BufferedReader in = null; try { in = new BufferedReader(new InputStreamReader(r.getInputStream())); } catch (Exception e) { throw new BuildException("Could not get InputStream from " + r.toLongString(), e); } try { String teststr = in.readLine(); while (teststr != null) { if (!casesensitive) { teststr = teststr.toLowerCase(); } if (ignorewhitespace) { teststr = SelectorUtils.removeWhitespace(teststr); } if (teststr.indexOf(userstr) > -1) { return true; } teststr = in.readLine(); } return false; } catch (IOException ioe) { throw new BuildException("Could not read " + r.toLongString()); } finally { FileUtils.close(in); } } } Other Ant examples (source code examples)Here is a short list of links related to this Ant ContainsSelector.java source code file: |
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