Merge pull request #15 from nrenner/csv

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brouter-core/src/main/java/btools/router/OsmTrack.java

@@ -289,7 +289,11 @@ public final class OsmTrack
   public void dumpMessages( String filename, RoutingContext rc ) throws Exception
   {
     BufferedWriter bw = filename == null ? null : new BufferedWriter( new FileWriter( filename ) );
+    writeMessages( bw, rc );
+  }
 
+  public void writeMessages( BufferedWriter bw, RoutingContext rc ) throws Exception
+  {
     // csv-header-line
 
     String header = "Longitude\tLatitude\tElevation\tDistance\tCostPerKm\tElevCost\tTurnCost";

brouter-server/src/main/java/btools/server/RouteServer.java

@@ -96,16 +96,16 @@ public class RouteServer extends Thread
             cr.quite = true;
             cr.doRun( maxRunningTime );
 
-            writeHttpHeader(bw);
-
             if ( cr.getErrorMessage() != null )
             {
+              writeHttpHeader(bw);
               bw.write( cr.getErrorMessage() );
               bw.write( "\n" );
             }
             else
             {
               OsmTrack track = cr.getFoundTrack();
+              writeHttpHeader(bw, handler.getMimeType());
               if ( track != null )
               {
                 bw.write( handler.formatTrack(track) );
@@ -205,11 +205,17 @@ public class RouteServer extends Thread
     return maxRunningTime;
   }
 
-  private static void writeHttpHeader(BufferedWriter bw) throws IOException {
+  private static void writeHttpHeader( BufferedWriter bw ) throws IOException
+  {
+    writeHttpHeader( bw, "text/plain" );
+  }
+
+  private static void writeHttpHeader( BufferedWriter bw, String mimeType ) throws IOException
+  {
     // http-header
     bw.write( "HTTP/1.1 200 OK\n" );
     bw.write( "Connection: close\n" );
-    bw.write( "Content-Type: text/xml; charset=utf-8\n" );
+    bw.write( "Content-Type: " + mimeType + "; charset=utf-8\n" );
     bw.write( "Access-Control-Allow-Origin: *\n" );
     bw.write( "\n" );
   }

brouter-server/src/main/java/btools/server/request/RequestHandler.java

@@ -25,4 +25,5 @@ public abstract class RequestHandler
 
 	public abstract String formatTrack(OsmTrack track);
 
+  public abstract String getMimeType();
 }

brouter-server/src/main/java/btools/server/request/ServerHandler.java

@@ -1,14 +1,15 @@
 package btools.server.request;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-
 import btools.router.OsmNodeNamed;
 import btools.router.OsmTrack;
 import btools.router.RoutingContext;
 import btools.server.ServiceContext;
+import java.io.BufferedWriter;
 import java.io.File;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
 
 /**
  * URL query parameter handler for web and standalone server. Supports all 
@@ -29,6 +30,8 @@ import java.io.File;
  */
 public class ServerHandler extends RequestHandler {
 
+  private RoutingContext rc;
+
 	public ServerHandler( ServiceContext serviceContext, HashMap<String, String> params )
 	{
 		super( serviceContext, params );
@@ -37,7 +40,7 @@ public class ServerHandler extends RequestHandler {
 	@Override
 	public RoutingContext readRoutingContext()
 	{
-    RoutingContext rc = new RoutingContext();
+    rc = new RoutingContext();
 
     String profile = params.get( "profile" );
     // when custom profile replace prefix with directory path
@@ -98,6 +101,20 @@ public class ServerHandler extends RequestHandler {
 		{
 			result = track.formatAsKml();
 		}
+    else if ("csv".equals(format))
+    {
+      try
+      {
+        StringWriter sw = new StringWriter();
+        BufferedWriter bw = new BufferedWriter(sw);
+        track.writeMessages( bw, rc );
+        return sw.toString();
+      }
+      catch (Exception ex)
+      {
+        return "Error: " + ex.getMessage();
+      }
+    }
 		else {
 			System.out.println("unknown track format '" + format + "', using default");
 			result = track.formatAsGpx();
@@ -106,6 +123,29 @@ public class ServerHandler extends RequestHandler {
 		return result;
 	}
 
+  @Override
+  public String getMimeType()
+  {
+    // default
+    String result = "text/plain";
+
+    // optional, may be null
+    String format = params.get( "format" );
+    if ( format != null )
+    {
+      if ( "gpx".equals( format ) || "kml".equals( format ) )
+      {
+        result = "text/xml";
+      }
+      else if ( "csv".equals( format ) )
+      {
+        result = "text/tab-separated-values";
+      }
+    }
+            
+    return result;
+  }
+
   private static OsmNodeNamed readPosition( String vlon, String vlat, String name )
   {
     if ( vlon == null ) throw new IllegalArgumentException( "lon " + name + " not found in input" );