com.agapsys.mvn.scanner.ScanInfo Maven / Gradle / Ivy

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Utility library for scanner maven plugins
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/*
 * Copyright 2016 Agapsys Tecnologia Ltda-ME.
 *
 * 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 com.agapsys.mvn.scanner;

import com.agapsys.mvn.scanner.parser.ClassInfo;
import com.agapsys.mvn.scanner.parser.ParsingException;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Set;
import java.util.TreeSet;

/**
 * Scan information
 * @author Leandro Oliveira ([email protected])
 */
public abstract class ScanInfo {
	private final Set entryList = new TreeSet();

	public Set getEntries() {
		return entryList;
	}

	public void addJar(File jarFile, String embeddedFile, String encoding) throws ParsingException {
		InputStream is = null;
		try {
			URL[] urls = {jarFile.toURI().toURL()};
			ClassLoader cl = new URLClassLoader(urls);

			is = cl.getResourceAsStream(embeddedFile);

			if (is == null)
				return;

			BufferedReader in = new BufferedReader(new InputStreamReader(is, encoding));

			String readLine;

			while ((readLine = in.readLine()) != null) {
				readLine = readLine.trim();

				if (readLine.isEmpty() || readLine.startsWith("#"))
					continue;

				getEntries().add(readLine);
			}

			in.close();

		} catch (MalformedURLException ex) {
			throw new ParsingException(ex);
		} catch (IOException ex) {
			throw new ParsingException(ex);
		} finally {
			if (is != null)
				try {
					is.close();
			} catch (IOException ex) {
				throw new ParsingException(ex);
			}
		}
	}

	protected void addEntry(String entry) {
		getEntries().add(entry);
	}

	public void addClassInfo(ClassInfo classInfo) {
		addEntry(getEntryString(classInfo));
	}

	protected abstract String getEntryString(ClassInfo classInfo);
}