jaroslav@468: /**
jaroslav@468:  * Back 2 Browser Bytecode Translator
jaroslav@468:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@468:  *
jaroslav@468:  * This program is free software: you can redistribute it and/or modify
jaroslav@468:  * it under the terms of the GNU General Public License as published by
jaroslav@468:  * the Free Software Foundation, version 2 of the License.
jaroslav@468:  *
jaroslav@468:  * This program is distributed in the hope that it will be useful,
jaroslav@468:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@468:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@468:  * GNU General Public License for more details.
jaroslav@468:  *
jaroslav@468:  * You should have received a copy of the GNU General Public License
jaroslav@468:  * along with this program. Look for COPYING file in the top folder.
jaroslav@468:  * If not, see http://opensource.org/licenses/GPL-2.0.
phrebejk@460:  */
phrebejk@460: package org.apidesign.bck2brwsr.dew;
phrebejk@460: 
jaroslav@471: import java.io.ByteArrayInputStream;
phrebejk@460: import java.io.IOException;
phrebejk@460: import java.io.InputStream;
phrebejk@461: import java.io.InputStreamReader;
phrebejk@460: import java.io.OutputStream;
jaroslav@465: import java.util.List;
phrebejk@541: import java.util.Locale;
jaroslav@465: import javax.tools.Diagnostic;
jaroslav@465: import javax.tools.JavaFileObject;
jaroslav@471: import org.apidesign.vm4brwsr.Bck2Brwsr;
phrebejk@461: import org.glassfish.grizzly.http.Method;
phrebejk@460: import org.glassfish.grizzly.http.server.HttpHandler;
jaroslav@546: import org.glassfish.grizzly.http.server.HttpServer;
phrebejk@460: import org.glassfish.grizzly.http.server.Request;
phrebejk@460: import org.glassfish.grizzly.http.server.Response;
phrebejk@461: import org.glassfish.grizzly.http.util.HttpStatus;
phrebejk@541: import org.json.JSONArray;
phrebejk@461: import org.json.JSONObject;
phrebejk@461: import org.json.JSONTokener;
phrebejk@460: 
phrebejk@460: /**
phrebejk@460:  *
phrebejk@460:  * @author phrebejk
phrebejk@460:  */
jaroslav@546: final class Dew extends HttpHandler implements Bck2Brwsr.Resources {
jaroslav@465:     private Compile data;
phrebejk@460: 
jaroslav@546:     public static void main(String... args) throws Exception {
jaroslav@546:         DewLauncher l = new DewLauncher(null);
jaroslav@546:         l.addClassLoader(DewLauncher.class.getClassLoader());
jaroslav@546:         final Dew dew = new Dew();
jaroslav@546:         HttpServer s = l.initServer(dew);
jaroslav@546:         s.getServerConfiguration().addHttpHandler(dew, "/dew/");
jaroslav@546:         l.launchServerAndBrwsr(s, "/dew/");
jaroslav@546:         System.in.read();
jaroslav@546:     }
jaroslav@546:     
phrebejk@460:     @Override
phrebejk@460:     public void service(Request request, Response response) throws Exception {
phrebejk@461:         
phrebejk@461:         if ( request.getMethod() == Method.POST ) {
phrebejk@461:             InputStream is = request.getInputStream();
phrebejk@461:             JSONTokener tok = new JSONTokener(new InputStreamReader(is));
phrebejk@461:             JSONObject obj = new JSONObject(tok);
jaroslav@466:             String tmpHtml = obj.getString("html");
jaroslav@466:             String tmpJava = obj.getString("java");
phrebejk@461:             
jaroslav@466:             Compile res = Compile.create(tmpHtml, tmpJava);
jaroslav@465:             List<Diagnostic<? extends JavaFileObject>> err = res.getErrors();
jaroslav@465:             if (err.isEmpty()) {
jaroslav@465:                 data = res;
jaroslav@465:                 response.getOutputStream().write("[]".getBytes());
jaroslav@465:                 response.setStatus(HttpStatus.OK_200);
jaroslav@465:             } else {
phrebejk@541:                 
phrebejk@541:                 JSONArray errors = new JSONArray();
phrebejk@541:                 
phrebejk@541:                 for (Diagnostic<? extends JavaFileObject> d : err) {
phrebejk@541:                     JSONObject e = new JSONObject();
phrebejk@541:                     e.put("col", d.getColumnNumber());
phrebejk@541:                     e.put("line", d.getLineNumber());
phrebejk@541:                     e.put("kind", d.getKind().toString());
phrebejk@541:                     e.put("msg", d.getMessage(Locale.ENGLISH));
phrebejk@541:                     errors.put(e);
phrebejk@541:                 }
phrebejk@541:                 
phrebejk@541:                 errors.write(response.getWriter());                
jaroslav@465:                 response.setStatus(HttpStatus.PRECONDITION_FAILED_412);
jaroslav@465:             }
phrebejk@461:             
phrebejk@461:             return;
phrebejk@461:         }
phrebejk@461:         
phrebejk@460:         String r = request.getHttpHandlerPath();
phrebejk@460:         if (r == null || r.equals("/")) {
phrebejk@460:             r = "index.html";
phrebejk@460:         }
phrebejk@461:         if (r.equals("/result.html")) {
phrebejk@461:             response.setContentType("text/html");
jaroslav@710:             if (data != null) {
jaroslav@710:                 response.getOutputBuffer().write(data.getHtml());
jaroslav@710:             }
phrebejk@461:             response.setStatus(HttpStatus.OK_200);
phrebejk@461:             return;
phrebejk@461:         }
phrebejk@461:         
phrebejk@460:         if (r.startsWith("/")) {
phrebejk@460:             r = r.substring(1);
phrebejk@460:         }
jaroslav@465:         
phrebejk@460:         if (r.endsWith(".html") || r.endsWith(".xhtml")) {
phrebejk@460:             response.setContentType("text/html");
phrebejk@460:         }
phrebejk@460:         OutputStream os = response.getOutputStream();
phrebejk@460:         try (InputStream is = Dew.class.getResourceAsStream(r) ) {
phrebejk@460:             copyStream(is, os, request.getRequestURL().toString() );
phrebejk@460:         } catch (IOException ex) {
phrebejk@460:             response.setDetailMessage(ex.getLocalizedMessage());
phrebejk@460:             response.setError();
phrebejk@460:             response.setStatus(404);
phrebejk@460:         }
phrebejk@460:     }
phrebejk@460:     
phrebejk@460:     static void copyStream(InputStream is, OutputStream os, String baseURL) throws IOException {
phrebejk@460:         for (;;) {
phrebejk@460:             int ch = is.read();
phrebejk@460:             if (ch == -1) {
phrebejk@460:                 break;
phrebejk@460:             }
phrebejk@460:             os.write(ch);            
phrebejk@460:         }
phrebejk@460:     }
jaroslav@471: 
jaroslav@471:     @Override
jaroslav@471:     public InputStream get(String r) throws IOException {
jaroslav@471:         byte[] arr = data == null ? null : data.get(r);
jaroslav@471:         return arr == null ? null : new ByteArrayInputStream(arr);
jaroslav@471:     }
phrebejk@460: }