package org.apidesign.infra.ant;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.net.URL;

import java.util.Map.Entry;

import org.apache.tools.ant.BuildException;

import org.apache.tools.ant.Task;

import org.apache.tools.ant.types.FileSet;

import org.apache.tools.ant.types.FilterSet;

public class GrepCopy extends Task {

    private GrepFilter filter = new GrepFilter();

    private File dir;

    private URL url;

    public GrepCopy() {

    }

    public FileSet createFileSet() {

        return filter.createFileSet();

    }

    public void setTarget(File dir) {

        this.dir = dir;

    }

    public void setBaseURL(URL url) {

        this.url = url;

    }

    @Override

    public void execute() throws BuildException {

        filter.setProject(getProject());

        FilterSet set = filter.createFilterSet();

        for (Object object : set.getFilterHash().entrySet()) {

            FileWriter w = null;

            try {

                Entry en = (Entry) object;

                String key = (String)en.getKey();

                {

                    File to = new File(dir, key);

                    to.getParentFile().mkdirs();

                    w = new FileWriter(to);

                    w.write((String) en.getValue());

                    w.close();

                }

                if (url != null) {

                    URL u = filter.getPath(url, key);

                    File to = new File(dir, key + ".url");

                    to.getParentFile().mkdirs();

                    w = new FileWriter(to);

                    w.write(u.toExternalForm());

                    w.close();

                }

            } catch (IOException ex) {

                throw new BuildException(ex);

            }

        }

    }

}