changeset 76:97b03fc807ad

add HttpLib and WebServlet git-svn-id: https://luan-java.googlecode.com/svn/trunk@77 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 15 Feb 2013 04:52:16 +0000
parents aa7538ae5fb6
children 4bf3d0c0b6b9
files src/luan/LuanRuntimeException.java src/luan/lib/HttpLib.java src/luan/lib/LuanRuntimeException.java src/luan/lib/TableLib.java src/luan/tools/WebServlet.java
diffstat 5 files changed, 132 insertions(+), 10 deletions(-) [+]
line wrap: on
line diff
diff -r aa7538ae5fb6 -r 97b03fc807ad src/luan/LuanRuntimeException.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/luan/LuanRuntimeException.java	Fri Feb 15 04:52:16 2013 +0000
@@ -0,0 +1,8 @@
+package luan;
+
+
+public final class LuanRuntimeException extends RuntimeException {
+	public LuanRuntimeException(LuanException e) {
+		super(e);
+	}
+}
diff -r aa7538ae5fb6 -r 97b03fc807ad src/luan/lib/HttpLib.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/luan/lib/HttpLib.java	Fri Feb 15 04:52:16 2013 +0000
@@ -0,0 +1,57 @@
+package luan.lib;
+
+import java.io.PrintStream;
+import java.io.IOException;
+import java.util.Map;
+import java.util.Set;
+import java.util.Arrays;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import luan.LuanState;
+import luan.LuanFunction;
+import luan.LuanElement;
+import luan.LuanException;
+import luan.LuanTable;
+
+
+public final class HttpLib {
+
+	public static final String NAME = "http";
+	public static final String FN_NAME = "serve_http";
+
+	public static void service(LuanState luan,HttpServletRequest request,HttpServletResponse response)
+		throws LuanException, IOException
+	{
+		LuanFunction fn = (LuanFunction)luan.global.get(FN_NAME);
+		ServletOutputStream sout = response.getOutputStream();
+		luan.out = new PrintStream(sout);
+
+		LuanTable module = new LuanTable();
+		luan.global.put(NAME,module);
+
+		LuanTable parameters = new LuanTable();
+		LuanTable parameter_lists = new LuanTable();
+		@SuppressWarnings("unchecked")
+		Map<String,String[]> paramMap = request.getParameterMap();
+		for( Map.Entry<String,String[]> entry : paramMap.entrySet() ) {
+			String name = entry.getKey();
+			String[] values = entry.getValue();
+			parameters.put(name,values[0]);
+			parameter_lists.put( name, new LuanTable(Arrays.asList((Object[])values)) );
+		}
+		module.put("parameters",parameters);
+		module.put("parameter_lists",parameter_lists);
+
+		luan.call(fn,LuanElement.JAVA,FN_NAME);
+	}
+/*
+	private final HttpServletRequest request;
+	private final HttpServletResponse response;
+
+	private HttpLib(HttpServletRequest request,HttpServletResponse response) {
+		this.request = request;
+		this.response = response;
+	}
+*/
+}
diff -r aa7538ae5fb6 -r 97b03fc807ad src/luan/lib/LuanRuntimeException.java
--- a/src/luan/lib/LuanRuntimeException.java	Wed Feb 13 09:19:15 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,10 +0,0 @@
-package luan.lib;
-
-import luan.LuanException;
-
-
-public final class LuanRuntimeException extends RuntimeException {
-	public LuanRuntimeException(LuanException e) {
-		super(e);
-	}
-}
diff -r aa7538ae5fb6 -r 97b03fc807ad src/luan/lib/TableLib.java
--- a/src/luan/lib/TableLib.java	Wed Feb 13 09:19:15 2013 +0000
+++ b/src/luan/lib/TableLib.java	Fri Feb 15 04:52:16 2013 +0000
@@ -10,6 +10,7 @@
 import luan.LuanJavaFunction;
 import luan.LuanElement;
 import luan.LuanException;
+import luan.LuanRuntimeException;
 
 
 public final class TableLib {
diff -r aa7538ae5fb6 -r 97b03fc807ad src/luan/tools/WebServlet.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/luan/tools/WebServlet.java	Fri Feb 15 04:52:16 2013 +0000
@@ -0,0 +1,66 @@
+package luan.tools;
+
+import java.io.IOException;
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import luan.LuanState;
+import luan.LuanException;
+import luan.LuanRuntimeException;
+import luan.LuanFunction;
+import luan.LuanElement;
+import luan.interp.LuanCompiler;
+import luan.lib.HttpLib;
+import luan.lib.BasicLib;
+import luan.lib.PackageLib;
+import luan.lib.MathLib;
+import luan.lib.StringLib;
+import luan.lib.TableLib;
+import luan.lib.HtmlLib;
+
+
+public class WebServlet extends HttpServlet {
+
+	public static final String HTTP_SERVER = "http_server";
+
+	protected void loadLibs(LuanState luan) throws LuanException {
+		luan.load(BasicLib.LOADER,BasicLib.NAME);
+		luan.load(PackageLib.LOADER,PackageLib.NAME);
+		luan.load(MathLib.LOADER,MathLib.NAME);
+		luan.load(StringLib.LOADER,StringLib.NAME);
+		luan.load(TableLib.LOADER,TableLib.NAME);
+		luan.load(HtmlLib.LOADER,HtmlLib.NAME);
+	}
+
+	protected void loadLuan(LuanState luan) throws LuanException {
+		PackageLib.require(luan,HTTP_SERVER);
+		Object fn = luan.global.get(HttpLib.FN_NAME);
+		if( !(fn instanceof LuanFunction) )
+			throw new LuanException( luan, LuanElement.JAVA, "function '"+HttpLib.FN_NAME+"' not defined" );
+	}
+
+	protected LuanState newLuanState() throws LuanException {
+		LuanState luan = LuanCompiler.newLuanState();
+		loadLibs(luan);
+		loadLuan(luan);
+		return luan;
+	}
+
+	protected LuanState getLuanState() throws LuanException {
+		return newLuanState();
+	}
+
+	protected void service(HttpServletRequest request,HttpServletResponse response)
+		throws ServletException, IOException
+	{
+		try {
+			LuanState luan = getLuanState();
+			HttpLib.service(luan,request,response);
+		} catch(LuanException e) {
+			throw new LuanRuntimeException(e);
+		}
+	}
+
+}