aboutsummaryrefslogtreecommitdiffstats
path: root/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/Jdk14RegexpMatcher.java
diff options
context:
space:
mode:
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/Jdk14RegexpMatcher.java')
-rw-r--r--framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/Jdk14RegexpMatcher.java170
1 files changed, 170 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/Jdk14RegexpMatcher.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/Jdk14RegexpMatcher.java
new file mode 100644
index 00000000..8c241d4e
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/Jdk14RegexpMatcher.java
@@ -0,0 +1,170 @@
+/*
+ * 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.util.regexp;
+
+import java.util.Vector;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
+
+import org.apache.tools.ant.BuildException;
+
+/**
+ * Implementation of RegexpMatcher for the built-in regexp matcher of
+ * JDK 1.4. UNIX_LINES option is enabled as a default.
+ *
+ */
+public class Jdk14RegexpMatcher implements RegexpMatcher {
+
+ private String pattern;
+
+ /** Constructor for JakartaOroRegexp */
+ public Jdk14RegexpMatcher() {
+ }
+
+ /**
+ * Set the regexp pattern from the String description.
+ * @param pattern the pattern to match
+ */
+ public void setPattern(String pattern) {
+ this.pattern = pattern;
+ }
+
+ /**
+ * Get a String representation of the regexp pattern
+ * @return the pattern
+ * @throws BuildException on error
+ */
+ public String getPattern() {
+ return pattern;
+ }
+
+ /**
+ * Get a compiled representation of the regexp pattern
+ * @param options the options
+ * @return the compiled pattern
+ * @throws BuildException on error
+ */
+ protected Pattern getCompiledPattern(int options)
+ throws BuildException {
+ int cOptions = getCompilerOptions(options);
+ try {
+ Pattern p = Pattern.compile(this.pattern, cOptions);
+ return p;
+ } catch (PatternSyntaxException e) {
+ throw new BuildException(e);
+ }
+ }
+
+ /**
+ * Does the given argument match the pattern using default options?
+ * @param argument the string to match against
+ * @return true if the pattern matches
+ * @throws BuildException on error
+ */
+ public boolean matches(String argument) throws BuildException {
+ return matches(argument, MATCH_DEFAULT);
+ }
+
+ /**
+ * Does the given argument match the pattern?
+ * @param input the string to match against
+ * @param options the regex options to use
+ * @return true if the pattern matches
+ * @throws BuildException on error
+ */
+ public boolean matches(String input, int options)
+ throws BuildException {
+ try {
+ Pattern p = getCompiledPattern(options);
+ return p.matcher(input).find();
+ } catch (Exception e) {
+ throw new BuildException(e);
+ }
+ }
+
+ /**
+ * Returns a Vector of matched groups found in the argument
+ * using default options.
+ *
+ * <p>Group 0 will be the full match, the rest are the
+ * parenthesized subexpressions</p>.
+ *
+ * @param argument the string to match against
+ * @return the vector of groups
+ * @throws BuildException on error
+ */
+ public Vector getGroups(String argument) throws BuildException {
+ return getGroups(argument, MATCH_DEFAULT);
+ }
+
+ /**
+ * Returns a Vector of matched groups found in the argument.
+ *
+ * <p>Group 0 will be the full match, the rest are the
+ * parenthesized subexpressions</p>.
+ *
+ * @param input the string to match against
+ * @param options the regex options to use
+ * @return the vector of groups
+ * @throws BuildException on error
+ */
+ public Vector getGroups(String input, int options)
+ throws BuildException {
+ Pattern p = getCompiledPattern(options);
+ Matcher matcher = p.matcher(input);
+ if (!matcher.find()) {
+ return null;
+ }
+ Vector v = new Vector();
+ int cnt = matcher.groupCount();
+ for (int i = 0; i <= cnt; i++) {
+ String match = matcher.group(i);
+ // treat non-matching groups as empty matches
+ if (match == null) {
+ match = "";
+ }
+ v.addElement(match);
+ }
+ return v;
+ }
+
+ /**
+ * Convert the generic options to the regex compiler specific options.
+ * @param options the generic options
+ * @return the specific options
+ */
+ protected int getCompilerOptions(int options) {
+ // be strict about line separator
+ int cOptions = Pattern.UNIX_LINES;
+
+ if (RegexpUtil.hasFlag(options, MATCH_CASE_INSENSITIVE)) {
+ cOptions |= Pattern.CASE_INSENSITIVE;
+ }
+ if (RegexpUtil.hasFlag(options, MATCH_MULTILINE)) {
+ cOptions |= Pattern.MULTILINE;
+ }
+ if (RegexpUtil.hasFlag(options, MATCH_SINGLELINE)) {
+ cOptions |= Pattern.DOTALL;
+ }
+
+ return cOptions;
+ }
+
+}