001: /*
002: * The Apache Software License, Version 1.1
003: *
004: * Copyright (c) 1999 The Apache Software Foundation. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution, if
020: * any, must include the following acknowlegement:
021: * "This product includes software developed by the
022: * Apache Software Foundation (http://www.apache.org/)."
023: * Alternately, this acknowlegement may appear in the software itself,
024: * if and wherever such third-party acknowlegements normally appear.
025: *
026: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
027: * Foundation" must not be used to endorse or promote products derived
028: * from this software without prior written permission. For written
029: * permission, please contact apache@apache.org.
030: *
031: * 5. Products derived from this software may not be called "Apache"
032: * nor may "Apache" appear in their names without prior written
033: * permission of the Apache Group.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: *
049: * This software consists of voluntary contributions made by many
050: * individuals on behalf of the Apache Software Foundation. For more
051: * information on the Apache Software Foundation, please see
052: * <http://www.apache.org/>.
053: *
054: */
055:
056: package com.sun.portal.providers.jsp.jasper3.jasper.compiler;
057:
058: /**
059: * CharDataGenerator generates the character data present in the JSP
060: * file. Typically this is HTML which lands up as strings in
061: * out.println(...).
062: *
063: * @author Anil K. Vijendran
064: */
065: public class CharDataGenerator extends GeneratorBase implements
066: ServiceMethodPhase {
067: char[] chars;
068:
069: // process in 32k chunks
070: private static final int MAXSIZE = 32 * 1024;
071:
072: public CharDataGenerator(char[] chars) {
073: this .chars = chars;
074: }
075:
076: public void generate(ServletWriter writer, Class phase) {
077: writer.indent();
078: int current = 0;
079: int limit = chars.length;
080: while (current < limit) {
081: int from = current;
082: int to = Math.min(current + MAXSIZE, limit);
083: generateChunk(writer, from, to);
084: current = to;
085: }
086: }
087:
088: private void generateChunk(ServletWriter writer, int from, int to) {
089: writer.print("out.write(\"");
090: // Generate the char data:
091: StringBuffer sb = new StringBuffer();
092: for (int i = from; i < to; i++) {
093: int ch = chars[i];
094: switch (ch) {
095: case '"':
096: sb.append("\\\"");
097: break;
098: case '\\':
099: sb.append("\\\\");
100: break;
101: case '\r':
102: sb.append("\\r");
103: break;
104: /*
105: case '\'':
106: sb.append('\\');
107: sb.append('\'');
108: break;
109: */
110: case '\n':
111: sb.append("\\n");
112: break;
113: case '\t':
114: sb.append("\\t");
115: break;
116: default:
117: sb.append((char) ch);
118: }
119: }
120: writer.print(sb.toString());
121: writer.print("\");\n");
122: }
123:
124: }
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