8144473: Nashorn code assumes NashornCallSiteDescriptor always
Reviewed-by: hannesw, mhaupt
#// Usage: jjs -cp dom_linker.jar -scripting dom_linker_gutenberg.js
/*
* Copyright (c) 2015, 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 script depends on DOM Element dynalink linker!
// Without that linker, this script will fail to run!
// Simple example that demonstrates reading XML Rss feed
// to generate a HTML file from script and show it by browser.
// Uses XML DOM parser along with DOM element pluggable dynalink linker
// for ease of navigation of DOM (child) elements by name.
// Java classes used
var DocBuilderFac = Java.type("javax.xml.parsers.DocumentBuilderFactory");
var Node = Java.type("org.w3c.dom.Node");
var File = Java.type("java.io.File");
var FileWriter = Java.type("java.io.FileWriter");
var PrintWriter = Java.type("java.io.PrintWriter");
// parse XML from uri and return Document
function parseXML(uri) {
var docBuilder = DocBuilderFac.newInstance().newDocumentBuilder();
return docBuilder["parse(java.lang.String)"](uri);
}
// generate HTML using here-doc and string interpolation
function getBooksHtml() {
var doc = parseXML("http://www.gutenberg.org/cache/epub/feeds/today.rss");
// wrap document root Element as script convenient object
var rss = doc.documentElement;
var str = <<HEAD
<html>
<title>${rss._channel._title._}</title>
<body>
<h1>${rss._channel._description._}</h1>
<p>
Published on ${rss._channel._pubDate._}
</p>
HEAD
var items = rss._channel._item;
for each (var i in items) {
str += <<LIST
<dl>
<dt><a href="${i._link._}">${i._title._}</a></dt>
<dd>${i._description._}</dd>
</dl>
LIST
}
str += <<END
</body>
</html>
END
return str;
}
// write the string to the given file
function writeTo(file, str) {
var w = new PrintWriter(new FileWriter(file));
try {
w.print(str);
} finally {
w.close();
}
}
// generate books HTML
var str = getBooksHtml();
// write to file. __DIR__ is directory where
// this script is stored.
var file = new File(__DIR__ + "books.html");
writeTo(file, str);
// show it by desktop browser
try {
var Desktop = Java.type("java.awt.Desktop");
Desktop.desktop.browse(file.toURI());
} catch (e) {
print(e);
}