01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson
28: */
29:
30: package com.caucho.servlets.ssi;
31:
32: import com.caucho.vfs.Path;
33: import com.caucho.vfs.WriteStream;
34:
35: import javax.servlet.ServletException;
36: import javax.servlet.http.HttpServletRequest;
37: import javax.servlet.http.HttpServletResponse;
38: import java.io.IOException;
39: import java.util.HashMap;
40:
41: /**
42: * Represents a SSI echo statement
43: */
44: public class EchoStatement extends Statement {
45: private final VarExpr _var;
46:
47: private EchoStatement(VarExpr var) {
48: _var = var;
49: }
50:
51: static Statement create(HashMap<String, String> attr, Path path) {
52: String var = attr.get("var");
53:
54: if (var == null)
55: return new ErrorStatement(
56: "['var' is a required attribute of #echo]");
57:
58: return new EchoStatement(new VarExpr(var, path));
59: }
60:
61: /**
62: * Executes the SSI statement.
63: *
64: * @param out the output stream
65: * @param request the servlet request
66: * @param response the servlet response
67: */
68: public void apply(WriteStream out, HttpServletRequest request,
69: HttpServletResponse response) throws IOException,
70: ServletException {
71: out.print(_var.evalString(request, response));
72: }
73: }
|