mml.handler.get.MMLGetDialectHandler.java Source code

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Here is the source code for mml.handler.get.MMLGetDialectHandler.java

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/*
 * This file is part of MML.
 *
 *  MML is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  MML 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with MML.  If not, see <http://www.gnu.org/licenses/>.
 *  (c) copyright Desmond Schmidt 2015
 */
package mml.handler.get;

import calliope.core.constants.Database;
import calliope.core.Utils;
import calliope.core.constants.JSONKeys;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import mml.exception.MMLException;
import mml.constants.Params;
import calliope.core.database.Connection;
import calliope.core.database.Connector;
import org.json.simple.JSONValue;
import org.json.simple.JSONObject;

/**
 * Get a dialect
 * @author desmond
 */
public class MMLGetDialectHandler extends MMLGetHandler {
    public static String DEFAULT_DIALECT = "{ \"body\": \"{\\\"paragraph\\\":{\\\"prop"
            + "\\\":\\\"\\\"},\\\"softhyphens\\\":true,\\\"smartquotes\\\":true,"
            + "\\\"codeblocks\\\":[{\\\"tag\\\":\\\"pre\\\",\\\"prop\\\":\\\"lev"
            + "el1\\\"}], \\\"section\\\":{\\\"prop\\\":\\\"section\\\"},\\\"hea"
            + "dings\\\":[{\\\"tag\\\":\\\"=\\\",\\\"prop\\\":\\\"h1\\\"},{\\\"t"
            + "ag\\\":\\\"-\\\",\\\"prop\\\":\\\"h2\\\"},{\\\"tag\\\":\\\"_\\\","
            + "\\\"prop\\\":\\\"h3\\\"}],\\\"milestones\\\":[{\\\"rightTag\\\":"
            + "\\\"]\\\",\\\"leftTag\\\":\\\"[\\\",\\\"prop\\\":\\\"page\\\"}],"
            + "\\\"quotations\\\":[{\\\"prop\\\":\\\"level1\\\"}],\\\"description"
            + "\\\":\\\"Default dialect\\\",\\\"language\\\":\\\"en\\\",\\\"para"
            + "formats\\\":[{\\\"rightTag\\\":\\\"<-\\\",\\\"leftTag\\\":\\\"->\\\","
            + "\\\"prop\\\":\\\"centered\\\"}],\\\"charformats\\\":[{\\\"tag\\\":"
            + "\\\"*\\\",\\\"prop\\\":\\\"italics\\\"},{\\\"tag\\\":\\\"`\\\","
            + "\\\"prop\\\":\\\"letter-spacing\\\"},{\\\"tag\\\":\\\"@\\\",\\\"pr"
            + "op\\\":\\\"small-caps\\\"}]}\" }";

    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, String urn) throws MMLException {
        try {
            docid = request.getParameter(Params.DOCID);
            version1 = request.getParameter(Params.VERSION1);
            if (version1 != null && version1.length() > 0 && !docid.endsWith(version1))
                docid += version1;
            // look for a dialect file with the full path then
            // if not found progressively pop off segments from the end
            String res = null;
            Connection conn = Connector.getConnection();
            while (res == null && docid.length() > 0) {
                res = conn.getFromDb(Database.DIALECTS, docid);
                if (res == null)
                    docid = Utils.chomp(docid);
            }
            if (res == null)
                res = DEFAULT_DIALECT;
            JSONObject jObj = (JSONObject) JSONValue.parse(res);
            String dialect = (String) jObj.get(JSONKeys.BODY);
            response.setCharacterEncoding("UTF-8");
            response.setContentType("application/json");
            response.getWriter().write(dialect);
        } catch (Exception e) {
            throw new MMLException(e);
        }
    }
}