001: /* ====================================================================
002: * Tea - Copyright (c) 1997-2000 Walt Disney Internet Group
003: * ====================================================================
004: * The Tea Software License, Version 1.1
005: *
006: * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions
010: * are met:
011: *
012: * 1. Redistributions of source code must retain the above copyright
013: * notice, this list of conditions and the following disclaimer.
014: *
015: * 2. Redistributions in binary form must reproduce the above copyright
016: * notice, this list of conditions and the following disclaimer in
017: * the documentation and/or other materials provided with the
018: * distribution.
019: *
020: * 3. The end-user documentation included with the redistribution,
021: * if any, must include the following acknowledgment:
022: * "This product includes software developed by the
023: * Walt Disney Internet Group (http://opensource.go.com/)."
024: * Alternately, this acknowledgment may appear in the software itself,
025: * if and wherever such third-party acknowledgments normally appear.
026: *
027: * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
028: * not be used to endorse or promote products derived from this
029: * software without prior written permission. For written
030: * permission, please contact opensource@dig.com.
031: *
032: * 5. Products derived from this software may not be called "Tea",
033: * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
034: * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
035: * written permission of the Walt Disney Internet Group.
036: *
037: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
038: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
039: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
040: * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
041: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
042: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
043: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
044: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
045: * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
046: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
047: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
048: * ====================================================================
049: *
050: * For more information about Tea, please see http://opensource.go.com/.
051: */
052:
053: package com.go.tea.util;
054:
055: import java.io.IOException;
056: import java.io.Reader;
057: import java.io.StringReader;
058: import java.io.OutputStream;
059: import java.util.Hashtable;
060: import com.go.trove.util.ClassInjector;
061: import com.go.tea.compiler.Compiler;
062: import com.go.tea.compiler.CompilationUnit;
063:
064: /******************************************************************************
065: * Simple compiler implementation that compiles a Tea template whose source
066: * is in a String. Call {@link #setTemplateSource setTemplateSource} to
067: * supply source code for templates before calling compile.
068: *
069: * @author Brian S O'Neill
070: * @version
071: * <!--$$Revision:--> 9 <!-- $-->, <!--$$JustDate:--> 9/07/00 <!-- $-->
072: */
073: public class StringCompiler extends Compiler {
074: private ClassInjector mInjector;
075: private Hashtable mTemplateSources;
076:
077: /**
078: * @param injector ClassInjector to feed generated classes into
079: */
080: public StringCompiler(ClassInjector injector) {
081: super ();
082: mInjector = injector;
083: mTemplateSources = new Hashtable();
084: }
085:
086: public boolean sourceExists(String name) {
087: return mTemplateSources.containsKey(name);
088: }
089:
090: protected CompilationUnit createCompilationUnit(String name) {
091: return new Unit(name, this );
092: }
093:
094: /**
095: * @param name The name of the template
096: * @param source The source code for the template
097: */
098: public void setTemplateSource(String name, String source) {
099: mTemplateSources.put(name, source);
100: }
101:
102: private class Unit extends CompilationUnit {
103: private String mSourceFileName;
104:
105: public Unit(String name, Compiler compiler) {
106: super (name, compiler);
107:
108: mSourceFileName = name.substring(name.lastIndexOf('.') + 1)
109: + ".tea";
110: }
111:
112: public String getSourceFileName() {
113: return mSourceFileName;
114: }
115:
116: public Reader getReader() throws IOException {
117: String source = (String) mTemplateSources.get(getName());
118: return new StringReader(source);
119: }
120:
121: public OutputStream getOutputStream() throws IOException {
122: String className = getName();
123: String pack = getTargetPackage();
124: if (pack != null && pack.length() > 0) {
125: className = pack + '.' + className;
126: }
127:
128: return mInjector.getStream(className);
129: }
130: }
131: }
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