de.rinderle.softvis3d.layout.dot.ExecuteCommand.java Source code

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Here is the source code for de.rinderle.softvis3d.layout.dot.ExecuteCommand.java

Source

/*
 * SoftVis3D Sonar plugin
 * Copyright (C) 2014 Stefan Rinderle
 * stefan@rinderle.info
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package de.rinderle.softvis3d.layout.dot;

import de.rinderle.softvis3d.domain.SoftVis3DConstants;
import org.apache.commons.lang.StringUtils;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import static att.grappa.GrappaConstants.HEIGHT_ATTR;
import static att.grappa.GrappaConstants.WIDTH_ATTR;

public class ExecuteCommand {

    static String checkForAdotBug(final String line) {
        String result = line;
        if (result.contains(HEIGHT_ATTR)) {
            result = addQuotationMarks(result, HEIGHT_ATTR);
        } else if (result.contains(WIDTH_ATTR) && !result.contains(SoftVis3DConstants.GRAPH_ATTR_PENWIDTH)) {
            result = result.replace(WIDTH_ATTR + "=", WIDTH_ATTR + "=\"");
            if (result.indexOf(']') >= 0) {
                result = result.replace("]", "\"]");
            } else {
                result = result + "\"";
            }
        }

        return result;
    }

    private static String addQuotationMarks(final String line, final String attrName) {
        String result = line.replace(attrName + "=", attrName + "=\"");
        result = result.replace(",", "\",");
        return result;
    }

    public String executeCommandReadErrorStream(final String command) throws DotExecutorException {
        final StringBuilder output = new StringBuilder();

        final Process p;
        try {
            p = Runtime.getRuntime().exec(command);

            final BufferedReader reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));

            String line;
            while ((line = reader.readLine()) != null) {
                output.append(line);
                output.append("\n");
            }

            reader.close();
        } catch (final IOException e) {
            throw new DotExecutorException(e.getMessage(), e);
        }

        return output.toString();
    }

    public String executeCommandReadAdot(final String command, final String inputGraph,
            final Version currentVersion) throws DotExecutorException {
        final Process process;
        try {
            process = Runtime.getRuntime().exec(command);

            writeStringToOutput(inputGraph, process);

            final String errorOutput = readOutputStream(process.getErrorStream());
            if (!StringUtils.isEmpty(errorOutput)) {
                throw new DotExecutorException(errorOutput);
            }

            return readAdotStream(currentVersion, process);

        } catch (final IOException e) {
            throw new DotExecutorException(e.getMessage(), e);
        } catch (final InterruptedException e) {
            throw new DotExecutorException(e.getMessage(), e);
        }
    }

    private String readAdotStream(final Version currentVersion, final Process process)
            throws IOException, InterruptedException {
        String line;
        final StringBuilder adotBuilder = new StringBuilder();

        final BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));

        final Version startBug = new Version("2.30.0");
        // return -1 (a<b) return 0 (a=b) return 1 (a>b)
        final boolean adotBug = currentVersion.compareTo(startBug) >= 0;

        while ((line = in.readLine()) != null) {
            if (adotBug) {
                line = checkForAdotBug(line);
            }

            adotBuilder.append(line);
            adotBuilder.append("\n");
        }

        process.waitFor();
        in.close();

        return adotBuilder.toString();
    }

    private String readOutputStream(final InputStream inputStream) throws IOException {
        String result = "";

        final BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

        if (reader.ready()) {
            String line;
            while ((line = reader.readLine()) != null) {
                result += line;
            }
            reader.close();
        }

        return result;
    }

    private void writeStringToOutput(final String inputGraph, final Process process) throws IOException {
        final BufferedWriter out = new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
        out.write(inputGraph);
        out.close();
    }
}