/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.jooby.assets;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import org.jooby.MediaType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.eclipsesource.v8.V8;
import com.eclipsesource.v8.V8Array;
import com.eclipsesource.v8.V8Object;
import com.eclipsesource.v8.utils.V8ObjectUtils;
import com.typesafe.config.Config;
/**
* <h1>rollup.js</h1>
* <p>
* <a href="http://rollupjs.org/">rollup.js</a> the next-generation ES6 module bundler.
* </p>
*
* <h2>usage</h2>
*
* <pre>
* assets {
* fileset {
* home: ...
* }
*
* pipeline {
* ...
* dev: [rollup]
* dist: [rollup]
* }
* }
* </pre>
*
* <h2>options</h2>
* <h3>generate</h3>
* <pre>
* rollup {
* genereate {
* format: es
* }
* }
* </pre>
*
* <p>
* See
* <a href="https://github.com/rollup/rollup/wiki/JavaScript-API#bundlegenerate-options-">generate
* options</a>.
* </p>
*
* <h3>plugins</h3>
*
* <h4>babel</h4>
*
* <pre>
* rollup {
* plugins {
* babel {
* presets: [[es2015, {modules: false}]]
* }
* }
* }
* </pre>
*
* <p>
* See <a href="https://babeljs.io/">https://babeljs.io</a> for more options.
* </p>
*
* <h4>legacy</h4>
* <p>
* This plugins add a <code>export default</code> line to legacy modules:
* </p>
*
* <pre>
* rollup {
* plugins {
* legacy {
* "/js/lib/react.js": React
* }
* }
* }
* </pre>
*
* <h4>alias</h4>
* <p>
* Set an alias to a common (probably long) path.
* </p>
*
* <pre>
* rollup {
* plugins {
* alias {
* "/js/lib/react.js": "react"
* }
* }
* }
* </pre>
*
* <p>
* Instead of:
* </p>
* <pre>
* import React from 'js/lib/react.js';
* </pre>
*
* <p>
* Now, you can import a module like:
* </p>
* <pre>
* import React from 'react';
* </pre>
*
* @author edgar
* @since 0.12.0
*/
public class Rollup extends AssetProcessor {
static final PathMatcher TRUE = p -> true;
static final PathMatcher FALSE = p -> false;
/** The logging system. */
private final Logger log = LoggerFactory.getLogger(getClass());
@Override
public boolean matches(final MediaType type) {
return MediaType.js.matches(type);
}
@Override
public String process(final String filename, final String source, final Config conf)
throws Exception {
return V8Context.run("window", ctx -> {
V8 v8 = ctx.v8;
V8Object j2v8 = ctx.hash();
j2v8.add("createFilter", ctx.function((receiver, args) -> {
List<PathMatcher> includes = filter(args, 0).stream()
.map(it -> FileSystems.getDefault().getPathMatcher("glob:" + it))
.collect(Collectors.toList());
if (includes.isEmpty()) {
includes.add(TRUE);
}
List<PathMatcher> excludes = filter(args, 1).stream()
.map(it -> FileSystems.getDefault().getPathMatcher("glob:" + it))
.collect(Collectors.toList());
if (excludes.isEmpty()) {
excludes.add(FALSE);
}
return ctx.function((self, arguments) -> {
Path path = Paths.get(arguments.get(0).toString());
if (includes.stream().filter(it -> it.matches(path)).findFirst().isPresent()) {
return !excludes.stream().filter(it -> it.matches(path)).findFirst().isPresent();
}
return false;
});
}));
v8.add("j2v8", j2v8);
Map<String, Object> options = options();
log.debug("{}", options);
return ctx.invoke("rollup.js", source, options, filename);
});
}
@SuppressWarnings("unchecked")
private List<String> filter(final V8Array args, final int i) {
if (i < args.length()) {
Object value = V8ObjectUtils.getValue(args, i);
if (value == V8.getUndefined()) {
return Collections.emptyList();
}
List<String> filter = new ArrayList<>();
if (value instanceof Collection) {
filter.addAll((Collection<? extends String>) value);
} else {
filter.add(value.toString());
}
return filter;
}
return Collections.emptyList();
}
}