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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/ContainsRegexpSelector.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/ContainsRegexpSelector.java | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/ContainsRegexpSelector.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/ContainsRegexpSelector.java new file mode 100644 index 00000000..4da3b6ff --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/selectors/ContainsRegexpSelector.java @@ -0,0 +1,219 @@ +/* + * 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.RegularExpression; +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.regexp.Regexp; +import org.apache.tools.ant.util.regexp.RegexpUtil; + +/** + * Selector that filters files based on a regular expression. + * + * @since Ant 1.6 + */ +public class ContainsRegexpSelector extends BaseExtendSelector + implements ResourceSelector { + + private String userProvidedExpression = null; + private RegularExpression myRegExp = null; + private Regexp myExpression = null; + private boolean caseSensitive = true; + private boolean multiLine = false; + private boolean singleLine = false; + /** Key to used for parameterized custom selector */ + public static final String EXPRESSION_KEY = "expression"; + /** Parameter name for the casesensitive attribute. */ + private static final String CS_KEY = "casesensitive"; + /** Parameter name for the multiline attribute. */ + private static final String ML_KEY = "multiline"; + /** Parameter name for the singleline attribute. */ + private static final String SL_KEY = "singleline"; + + /** + * Creates a new <code>ContainsRegexpSelector</code> instance. + */ + public ContainsRegexpSelector() { + } + + /** + * @return a string describing this object + */ + public String toString() { + StringBuilder buf = new StringBuilder( + "{containsregexpselector expression: "); + buf.append(userProvidedExpression); + buf.append("}"); + return buf.toString(); + } + + /** + * The regular expression used to search the file. + * + * @param theexpression this must match a line in the file to be selected. + */ + public void setExpression(String theexpression) { + this.userProvidedExpression = theexpression; + } + + /** + * Whether to ignore case or not. + * @param b if false, ignore case. + * @since Ant 1.8.2 + */ + public void setCaseSensitive(boolean b) { + caseSensitive = b; + } + + /** + * Whether to match should be multiline. + * @param b the value to set. + * @since Ant 1.8.2 + */ + public void setMultiLine(boolean b) { + multiLine = b; + } + + /** + * Whether to treat input as singleline ('.' matches newline). + * Corresponds to java.util.regex.Pattern.DOTALL. + * @param b the value to set. + * @since Ant 1.8.2 + */ + public void setSingleLine(boolean b) { + singleLine = b; + } + + /** + * 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 (EXPRESSION_KEY.equalsIgnoreCase(paramname)) { + setExpression(parameters[i].getValue()); + } else if (CS_KEY.equalsIgnoreCase(paramname)) { + setCaseSensitive(Project + .toBoolean(parameters[i].getValue())); + } else if (ML_KEY.equalsIgnoreCase(paramname)) { + setMultiLine(Project.toBoolean(parameters[i].getValue())); + } else if (SL_KEY.equalsIgnoreCase(paramname)) { + setSingleLine(Project.toBoolean(parameters[i].getValue())); + } else { + setError("Invalid parameter " + paramname); + } + } + } + } + + /** + * Checks that an expression was specified. + * + */ + public void verifySettings() { + if (userProvidedExpression == null) { + setError("The expression attribute is required"); + } + } + + /** + * Tests a regular expression against each line of text in the file. + * + * @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)); + } + + /** + * Tests a regular expression against each line of text in a Resource. + * + * @param r the Resource to check. + * @return whether the Resource is selected or not + */ + public boolean isSelected(Resource r) { + String teststr = null; + BufferedReader in = null; + + // throw BuildException on error + + validate(); + + if (r.isDirectory()) { + return true; + } + + if (myRegExp == null) { + myRegExp = new RegularExpression(); + myRegExp.setPattern(userProvidedExpression); + myExpression = myRegExp.getRegexp(getProject()); + } + + try { + in = new BufferedReader(new InputStreamReader(r.getInputStream())); + } catch (Exception e) { + throw new BuildException("Could not get InputStream from " + + r.toLongString(), e); + } + try { + teststr = in.readLine(); + + while (teststr != null) { + + if (myExpression.matches(teststr, + RegexpUtil.asOptions(caseSensitive, + multiLine, + singleLine))) { + return true; + } + teststr = in.readLine(); + } + + return false; + } catch (IOException ioe) { + throw new BuildException("Could not read " + r.toLongString()); + } finally { + try { + in.close(); + } catch (Exception e) { + throw new BuildException("Could not close " + + r.toLongString()); + } + } + } +} + |