[java-support] branch master updated: Add regex predicate.

[Scott Cantor]

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scantor pushed a commit to branch master
in repository java-support.

View the commit online:
http://git.shibboleth.net/view/?p=java-support.git;a=commit;h=7cec0efad608ed26098959712024c2ce4f2dae3f

The following commit(s) were added to refs/heads/master by this push:
       new  7cec0ef   Add regex predicate.
7cec0ef is described below

commit 7cec0efad608ed26098959712024c2ce4f2dae3f
Author: Scott Cantor <cantor.2 at osu.edu>
AuthorDate: Fri Jun 2 13:56:49 2017 -0400

    Add regex predicate.
---
 .../java/support/logic/RegexPredicate.java         | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/src/main/java/net/shibboleth/utilities/java/support/logic/RegexPredicate.java b/src/main/java/net/shibboleth/utilities/java/support/logic/RegexPredicate.java
new file mode 100644
index 0000000..a92c213
--- /dev/null
+++ b/src/main/java/net/shibboleth/utilities/java/support/logic/RegexPredicate.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the University Corporation for Advanced Internet Development,
+ * Inc. (UCAID) under one or more contributor license agreements.  See the
+ * NOTICE file distributed with this work for additional information regarding
+ * copyright ownership. The UCAID 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 net.shibboleth.utilities.java.support.logic;
+
+import java.util.regex.Pattern;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+import com.google.common.base.Predicate;
+
+import net.shibboleth.utilities.java.support.annotation.constraint.NotEmpty;
+
+/**
+ * A {@link Predicate} that checks that a given input string matches a regular expression. If a given
+ * input is <code>null</code> this predicate returns <code>false</code>.
+ * 
+ * @since 7.4.0
+ */
+public class RegexPredicate implements Predicate<CharSequence> {
+
+    /** Regular expression. */
+    @Nullable private Pattern pattern;
+
+    /**
+     * Pattern constructor.
+     * 
+     * @param p the pattern to match the input against
+     */
+    public RegexPredicate(@Nonnull final Pattern p) {
+        pattern = p;
+    }
+
+    /**
+     * String constructor.
+     * 
+     * @param s the pattern to match the input against
+     */
+    public RegexPredicate(@Nonnull @NotEmpty final String s) {
+        pattern = Pattern.compile(s);
+    }
+
+    /** {@inheritDoc} */
+    public boolean apply(final CharSequence input) {
+        if (input == null) {
+            return false;
+        }
+
+        return pattern.matcher(input).matches();
+    }
+    
+}
\ No newline at end of file

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