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-rw-r--r--samples/filebrowser.js100
-rw-r--r--samples/word_histogram.js53
2 files changed, 153 insertions, 0 deletions
diff --git a/samples/filebrowser.js b/samples/filebrowser.js
new file mode 100644
index 00000000..da00553a
--- /dev/null
+++ b/samples/filebrowser.js
@@ -0,0 +1,100 @@
+#// Usage: jjs -fx filebrowser.js -- <start_dir>
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. 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 Oracle 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.
+ */
+
+// Uses -fx and javafx TreeView to visualize directories
+if (!$OPTIONS._fx) {
+ print("Usage: jjs -fx filebrowser.js -- <start_dir>");
+ exit(1);
+}
+
+// Java classes used
+var File = Java.type("java.io.File");
+var Files = Java.type("java.nio.file.Files");
+
+// check directory argument, if passed
+var dir = arguments.length > 0? new File(arguments[0]) : new File(".");
+if (! dir.isDirectory()) {
+ print(dir + " is not a directory!");
+ exit(2);
+}
+
+// JavaFX classes used
+var FXCollections = Java.type("javafx.collections.FXCollections");
+var Scene = Java.type("javafx.scene.Scene");
+var TreeItem = Java.type("javafx.scene.control.TreeItem");
+var TreeView = Java.type("javafx.scene.control.TreeView");
+
+// create a subclass of JavaFX TreeItem class
+var LazyTreeItem = Java.extend(TreeItem);
+
+// lazily filling children of a directory LazyTreeItem
+function buildChildren(dir) {
+ var children = FXCollections.observableArrayList();
+ var stream = Files.list(dir.toPath());
+ stream.forEach(function(path) {
+ var file = path.toFile();
+ var item = file.isDirectory()?
+ makeLazyTreeItem(file) : new TreeItem(file.name);
+ children.add(item);
+ });
+ stream.close();
+ return children;
+}
+
+// create an instance LazyTreeItem with override methods
+function makeLazyTreeItem(dir) {
+ var item = new LazyTreeItem(dir.name) {
+ expanded: false,
+ isLeaf: function() false,
+ getChildren: function() {
+ if (! this.expanded) {
+ // call super class (TreeItem) method
+ Java.super(item).getChildren().setAll(buildChildren(dir));
+ this.expanded = true;
+ }
+ // call super class (TreeItem) method
+ return Java.super(item).getChildren();
+ }
+ }
+ return item;
+}
+
+// JavaFX start method
+function start(stage) {
+ stage.title = dir.absolutePath;
+ var rootItem = makeLazyTreeItem(dir);
+ rootItem.expanded = true;
+ var tree = new TreeView(rootItem);
+ stage.scene = new Scene(tree, 300, 450);
+ stage.show();
+}
diff --git a/samples/word_histogram.js b/samples/word_histogram.js
new file mode 100644
index 00000000..9c739ea0
--- /dev/null
+++ b/samples/word_histogram.js
@@ -0,0 +1,53 @@
+#nashorn word histogram of a file
+
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. 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 Oracle 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.
+ */
+
+/*
+ * This example demonstrates how to print word histogram
+ * of a given text file using regex, array and JSON
+ * functions.
+ */
+
+if (arguments.length < 1) {
+ print("Usage: jjs -scripting word_histogram.js -- <file>");
+ exit(1);
+}
+
+var obj = {};
+
+readFully(arguments[0]).
+ split(/[^\w+]/).
+ forEach(function(x)
+ (x in obj? obj[x]++ : obj[x] = 1));
+
+print(JSON.stringify(obj));
+