kn.uni.gis.dataimport.GenerateCSV.java Source code

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Here is the source code for kn.uni.gis.dataimport.GenerateCSV.java

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/**
 * Copyright (C) 2013 Marcel Hanser & Martin Koelbl <nanohome.de@googlemail.com>
 *
 * 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 kn.uni.gis.dataimport;

import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;

import com.google.common.base.Charsets;
import com.google.common.base.Preconditions;
import com.google.common.io.CharStreams;
import com.google.common.io.Files;
import com.google.common.io.InputSupplier;
import com.google.common.io.OutputSupplier;

public class GenerateCSV {
    private static final String PATH = "./";
    static final String OUTPUT = "src/main/resources/";

    public static void main(String[] args) throws IOException, InterruptedException {
        for (File file : new File(PATH).listFiles(new FilenameFilter() {
            @Override
            public boolean accept(File dir, String name) {
                return name.endsWith(".shp");
            }
        })) {
            ProcessBuilder builder = new ProcessBuilder("lib/shp2text", "--spreadsheet", file.getAbsolutePath());

            System.out.println("executing: " + builder.command());

            final Process start = builder.start();

            new StreamConsumer(new InputSupplier<Reader>() {
                public Reader getInput() throws IOException {
                    return new InputStreamReader(start.getInputStream());
                }
            }, Files.newWriterSupplier(new File(OUTPUT + file.getName() + ".csv"), Charsets.UTF_8)).start();
            new StreamConsumer(new InputSupplier<Reader>() {
                public Reader getInput() throws IOException {
                    return new InputStreamReader(start.getErrorStream());
                }
            }, Files.newWriterSupplier(new File(OUTPUT + file.getName() + ".csv"), Charsets.UTF_8)).start();
            Preconditions.checkState(start.waitFor() == 0, "error ");
        }
    }

    private static class StreamConsumer extends Thread {

        private InputSupplier<Reader> is;

        private OutputSupplier<OutputStreamWriter> out;

        private StreamConsumer(InputSupplier<Reader> inputSupplier,
                OutputSupplier<OutputStreamWriter> outputSupplier) {
            this.is = inputSupplier;
            this.out = outputSupplier;
        }

        public void run() {
            try {
                CharStreams.copy(is, out);

            } catch (IOException ioe) {
                ioe.printStackTrace();
            }
        }
    }
}