[JGIT PATCH 2/4] Create a fnmatch-style pattern TreeFilter

[Robin Rosenberg <robin.rosenberg@xxxxxxxxxx>]

This uses Florian's pattern matcher to perform the matching.

Signed-off-by: Robin Rosenberg <robin.rosenberg@xxxxxxxxxx>
---
 .../jgit/treewalk/filter/WildCardTreeFilter.java   |  103 ++++++++++++++++++++
 1 files changed, 103 insertions(+), 0 deletions(-)
 create mode 100644 org.spearce.jgit/src/org/spearce/jgit/treewalk/filter/WildCardTreeFilter.java

diff --git a/org.spearce.jgit/src/org/spearce/jgit/treewalk/filter/WildCardTreeFilter.java b/org.spearce.jgit/src/org/spearce/jgit/treewalk/filter/WildCardTreeFilter.java
new file mode 100644
index 0000000..ce6da5e
--- /dev/null
+++ b/org.spearce.jgit/src/org/spearce/jgit/treewalk/filter/WildCardTreeFilter.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@xxxxxxxxxx>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Git Development Community nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.spearce.jgit.treewalk.filter;
+
+import java.io.IOException;
+
+import org.spearce.jgit.errors.IncorrectObjectTypeException;
+import org.spearce.jgit.errors.InvalidPatternException;
+import org.spearce.jgit.errors.MissingObjectException;
+import org.spearce.jgit.fnmatch.FileNameMatcher;
+import org.spearce.jgit.treewalk.TreeWalk;
+import org.spearce.jgit.treewalk.filter.TreeFilter;
+
+/**
+ * This class implements a TreeeFilter that uses the wildcard style pattern
+ * matching like of Posix fnmatch function.
+ */
+public class WildCardTreeFilter extends TreeFilter {
+
+	private final FileNameMatcher matcher;
+
+	private final String pattern;
+
+	protected WildCardTreeFilter(final String pattern) {
+		try {
+			this.pattern = pattern;
+			matcher = new FileNameMatcher(pattern, null);
+		} catch (InvalidPatternException e) {
+			throw new IllegalArgumentException(e);
+		}
+	}
+
+	@Override
+	public TreeFilter clone() {
+		return new WildCardTreeFilter(pattern);
+	}
+
+	@Override
+	public boolean include(TreeWalk walker) throws MissingObjectException,
+			IncorrectObjectTypeException, IOException {
+		if (walker.isRecursive() && walker.isSubtree())
+			return true;
+		matcher.reset();
+		matcher.append(walker.getPathString());
+		if (matcher.isMatch())
+			return true;
+		return false;
+	}
+
+	@Override
+	public boolean shouldBeRecursive() {
+		return true;
+	}
+
+	/**
+	 * Construct a WildCardmatcher like POSIX fnmatch.
+	 *
+	 * @param pattern
+	 *            A POSIX wildcard pattern
+	 * @return a {@link TreeFilter} that matches pattern
+	 * @throws IllegalArgumentException
+	 *             if the pattern is malformed
+	 */
+	public static TreeFilter create(final String pattern) {
+		return new WildCardTreeFilter(pattern);
+	}
+
+}
-- 
1.5.5.1.178.g1f811

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