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 set statement
43: */
44: public class SetStatement extends Statement {
45: private final String _var;
46: private final SSIExpr _value;
47:
48: private SetStatement(String var, SSIExpr value) {
49: _var = var;
50: _value = value;
51: }
52:
53: static Statement create(HashMap<String, String> attr, Path path) {
54: String var = attr.get("var");
55:
56: if (var == null)
57: return new ErrorStatement(
58: "['var' is a required attribute of #set]");
59:
60: String value = attr.get("value");
61:
62: if (value == null)
63: return new ErrorStatement(
64: "['value' is a required attribute of #set]");
65:
66: return new SetStatement(var, ExprParser
67: .parseString(value, path));
68: }
69:
70: /**
71: * Executes the SSI statement.
72: *
73: * @param out the output stream
74: * @param request the servlet request
75: * @param response the servlet response
76: */
77: public void apply(WriteStream out, HttpServletRequest request,
78: HttpServletResponse response) throws IOException,
79: ServletException {
80: request
81: .setAttribute(_var, _value
82: .evalString(request, response));
83: }
84: }
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