name.martingeisse.slave_services.babel.api.DownloadCakeTranslationFileApiHandler.java Source code

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Here is the source code for name.martingeisse.slave_services.babel.api.DownloadCakeTranslationFileApiHandler.java

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/**
 * Copyright (c) 2010 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.slave_services.babel.api;

import java.util.List;

import name.martingeisse.api.handler.IApiRequestHandler;
import name.martingeisse.api.request.ApiRequestCycle;
import name.martingeisse.api.request.ApiRequestPathChain;
import name.martingeisse.api.request.MissingRequestParameterException;
import name.martingeisse.slave_services.babel.backend.BabelDataUtil;
import name.martingeisse.slave_services.entity.MessageFamily;
import name.martingeisse.slave_services.entity.MessageTranslation;

import org.apache.commons.lang3.tuple.Pair;

/**
 * This request handler generates a CakePHP .po file download.
 */
public class DownloadCakeTranslationFileApiHandler implements IApiRequestHandler {

    /**
     * Constructor.
     */
    public DownloadCakeTranslationFileApiHandler() {
    }

    /* (non-Javadoc)
     * @see name.martingeisse.api.handler.IApiRequestHandler#handle(name.martingeisse.api.request.ApiRequestCycle, name.martingeisse.api.request.ApiRequestPathChain)
     */
    @Override
    public void handle(final ApiRequestCycle requestCycle, final ApiRequestPathChain path) throws Exception {

        // parse request URI and load data
        if (path.isEmpty()) {
            throw new MissingRequestParameterException("domain");
        }
        ApiRequestPathChain subpath1 = path.getTail();
        if (subpath1.isEmpty()) {
            throw new MissingRequestParameterException("language key");
        }
        String domain = path.getHead();
        String languageKey = subpath1.getHead();
        // TODO what about missing ones?
        List<Pair<MessageFamily, MessageTranslation>> translationEntries = BabelDataUtil
                .loadDomainTranslations(domain, languageKey, false);

        // parse options
        if ("1".equals(requestCycle.getRequest().getParameter("download"))) {
            requestCycle.getResponse().addHeader("Content-Disposition", "attachment; filename=" + domain + ".po");
        }

        // build the response
        requestCycle.getResponse().addHeader("Content-Type", "text/plain");
        StringBuilder builder = new StringBuilder();
        for (Pair<MessageFamily, MessageTranslation> translationEntry : translationEntries) {
            // TODO quote escaping
            builder.append("msgid \"").append(translationEntry.getLeft().getMessageKey());
            builder.append("\"\nmsgstr \"").append(translationEntry.getRight().getText());
            builder.append("\"\n\n");
            requestCycle.getResponse().getWriter().print(builder);
            builder.setLength(0);
        }

    }

}