aQute.bnd.osgi.PreprocessResource Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of biz.aQute.bnd Show documentation

This command line utility is the Swiss army knife of OSGi. It provides you with a breadth of tools to understand and manage OSGi based systems. This project basically uses bndlib.

There is a newer version: 7.1.0

Show newest version

package aQute.bnd.osgi;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

import aQute.lib.io.IO;

public class PreprocessResource extends AbstractResource {
	final Resource	resource;
	final Processor	processor;

	public PreprocessResource(Processor processor, Resource r) {
		super(r.lastModified());
		this.processor = processor;
		this.resource = r;
		setExtra(resource.getExtra());
	}

	@Override
	protected byte[] getBytes() throws Exception {
		ByteArrayOutputStream bout = new ByteArrayOutputStream(2000);
		OutputStreamWriter osw = new OutputStreamWriter(bout, Constants.DEFAULT_CHARSET);
		PrintWriter pw = new PrintWriter(osw);
		InputStream in = null;
		BufferedReader rdr = null;
		try {
			in = resource.openInputStream();
			rdr = new BufferedReader(new InputStreamReader(in, "UTF8"));
			String line = rdr.readLine();
			while (line != null) {
				line = processor.getReplacer().process(line);
				pw.println(line);
				line = rdr.readLine();
			}
			pw.flush();
			byte[] data = bout.toByteArray();
			return data;

		} catch (Exception e) {
			return IO.read(resource.openInputStream());

		} finally {
			if (rdr != null) {
				rdr.close();
			}
			if (in != null) {
				in.close();
			}
		}
	}
}