Add NameFileFilter and OrFileFilter

pf4j/src/main/java/ro/fortsoft/pf4j/util/NameFileFilter.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2015 Decebal Suiu
+ *
+ * Licensed 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 ro.fortsoft.pf4j.util;
+
+import java.io.File;
+import java.io.FileFilter;
+
+/**
+ * Filter accepts any file with this name. The case of the filename is ignored.
+ *
+ * @author Decebal Suiu
+ */
+public class NameFileFilter implements FileFilter {
+
+    private String name;
+
+    public NameFileFilter(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean accept(File file) {
+        // perform a case insensitive check.
+        return file.getName().equalsIgnoreCase(name);
+    }
+
+}

pf4j/src/main/java/ro/fortsoft/pf4j/util/OrFileFilter.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2013 Decebal Suiu
+ *
+ * Licensed 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 ro.fortsoft.pf4j.util;
+
+import java.io.File;
+import java.io.FileFilter;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * This filter providing conditional OR logic across a list of
+ * file filters. This filter returns <code>true</code> if one filter in the
+ * list return <code>true</code>. Otherwise, it returns <code>false</code>.
+ * Checking of the file filter list stops when the first filter returns
+ * <code>true</code>.
+ *
+ * @author Decebal Suiu
+ */
+public class OrFileFilter implements FileFilter {
+
+    /** The list of file filters. */
+    private List<FileFilter> fileFilters;
+
+    public OrFileFilter() {
+        this(new ArrayList<FileFilter>());
+    }
+
+    public OrFileFilter(FileFilter... fileFilters) {
+        this(Arrays.asList(fileFilters));
+    }
+
+    public OrFileFilter(List<FileFilter> fileFilters) {
+        this.fileFilters = new ArrayList<>(fileFilters);
+    }
+
+    public OrFileFilter addFileFilter(FileFilter fileFilter) {
+        fileFilters.add(fileFilter);
+
+        return this;
+    }
+
+    public List<FileFilter> getFileFilters() {
+        return Collections.unmodifiableList(fileFilters);
+    }
+
+    public boolean removeFileFilter(FileFilter fileFilter) {
+        return fileFilters.remove(fileFilter);
+    }
+
+    public void setFileFilters(List<FileFilter> fileFilters) {
+        this.fileFilters = new ArrayList<>(fileFilters);
+    }
+
+    @Override
+    public boolean accept(File file) {
+        if (this.fileFilters.size() == 0) {
+            return true;
+        }
+
+        for (FileFilter fileFilter : this.fileFilters) {
+            if (fileFilter.accept(file)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+}