1 files changed, 109 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/RegexpUtil.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/RegexpUtil.java
new file mode 100644
index 00000000..ebd85fab
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/regexp/RegexpUtil.java
@@ -0,0 +1,109 @@
+/*
+ *  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;
+
+// CheckStyle:HideUtilityClassConstructorCheck OFF - bc
+
+/***
+ * Regular expression utilities class which handles flag operations.
+ *
+ */
+public class RegexpUtil {
+
+    /**
+     * Check the options has a particular flag set.
+     *
+     * @param options an <code>int</code> value
+     * @param flag an <code>int</code> value
+     * @return true if the flag is set
+     */
+    public static boolean hasFlag(int options, int flag) {
+        return ((options & flag) > 0);
+    }
+
+    /**
+     * Remove a particular flag from an int value contains the option flags.
+     *
+     * @param options an <code>int</code> value
+     * @param flag an <code>int</code> value
+     * @return the options with the flag unset
+     */
+    public static int removeFlag(int options, int flag) {
+        return (options & (0xFFFFFFFF - flag));
+    }
+
+    /**
+     * convert regex option flag characters to regex options
+     * <dl>
+     *   <li>g -  Regexp.REPLACE_ALL</li>
+     *   <li>i -  RegexpMatcher.MATCH_CASE_INSENSITIVE</li>
+     *   <li>m -  RegexpMatcher.MATCH_MULTILINE</li>
+     *   <li>s -  RegexpMatcher.MATCH_SINGLELINE</li>
+     * </dl>
+     * @param flags the string containing the flags
+     * @return the Regexp option bits
+     * @since Ant 1.8.2
+     */
+    public static int asOptions(String flags) {
+        int options = RegexpMatcher.MATCH_DEFAULT;
+        if (flags != null) {
+            options = asOptions(flags.indexOf('i') == -1,
+                                flags.indexOf('m') != -1,
+                                flags.indexOf('s') != -1);
+            if (flags.indexOf('g') != -1) {
+                options |= Regexp.REPLACE_ALL;
+            }
+        }
+        return options;
+    }
+
+    /**
+     * Convert flag to regex options.
+     *
+     * @param caseSensitive opposite of RegexpMatcher.MATCH_CASE_INSENSITIVE
+     * @return the Regexp option bits
+     * @since Ant 1.8.2
+     */
+    public static int asOptions(boolean caseSensitive) {
+        return asOptions(caseSensitive, false, false);
+    }
+
+    /**
+     * Convert flags to regex options.
+     *
+     * @param caseSensitive opposite of RegexpMatcher.MATCH_CASE_INSENSITIVE
+     * @param multiLine RegexpMatcher.MATCH_MULTILINE
+     * @param singleLine RegexpMatcher.MATCH_SINGLELINE
+     * @return the Regexp option bits
+     * @since Ant 1.8.2
+     */
+    public static int asOptions(boolean caseSensitive, boolean multiLine,
+                                boolean singleLine) {
+        int options = RegexpMatcher.MATCH_DEFAULT;
+        if (!caseSensitive) {
+            options = options | RegexpMatcher.MATCH_CASE_INSENSITIVE;
+        }
+        if (multiLine) {
+            options = options | RegexpMatcher.MATCH_MULTILINE;
+        }
+        if (singleLine) {
+            options = options | RegexpMatcher.MATCH_SINGLELINE;
+        }
+        return options;
+    }
+}