Source Code Cross Referenced for JspJavaWriter.java in  » EJB-Server-resin-3.1.5 » resin » com » caucho » jsp » java » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.jsp.java 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003:         *
004:         * This file is part of Resin(R) Open Source
005:         *
006:         * Each copy or derived work must preserve the copyright notice and this
007:         * notice unmodified.
008:         *
009:         * Resin Open Source is free software; you can redistribute it and/or modify
010:         * it under the terms of the GNU General Public License as published by
011:         * the Free Software Foundation; either version 2 of the License, or
012:         * (at your option) any later version.
013:         *
014:         * Resin Open Source is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017:         * of NON-INFRINGEMENT.  See the GNU General Public License for more
018:         * details.
019:         *
020:         * You should have received a copy of the GNU General Public License
021:         * along with Resin Open Source; if not, write to the
022:         *
023:         *   Free Software Foundation, Inc.
024:         *   59 Temple Place, Suite 330
025:         *   Boston, MA 02111-1307  USA
026:         *
027:         * @author Scott Ferguson
028:         */
029:
030:        package com.caucho.jsp.java;
031:
032:        import com.caucho.java.JavaWriter;
033:        import com.caucho.util.CharBuffer;
034:        import com.caucho.vfs.WriteStream;
035:
036:        import java.io.IOException;
037:
038:        /**
039:         * Writing class for generated Java code.
040:         */
041:        public class JspJavaWriter extends JavaWriter {
042:            // The JSP generator
043:            private JavaJspGenerator _gen;
044:
045:            private String _filename;
046:            private int _line = -1;
047:
048:            // Current text node.
049:            private CharBuffer _cb = CharBuffer.allocate();
050:
051:            public JspJavaWriter(WriteStream os, JavaJspGenerator gen) {
052:                super (os);
053:
054:                _gen = gen;
055:            }
056:
057:            /**
058:             * Adds text to the current buffer.
059:             */
060:            public void addText(String text) throws IOException {
061:                if (_filename != null && _cb.length() == 0) {
062:                    super .setLocation(_filename, _line);
063:                }
064:
065:                _cb.append(text);
066:            }
067:
068:            /**
069:             * Sets the source filename and line.
070:             *
071:             * @param filename the filename of the source file.
072:             * @param line the line of the source file.
073:             */
074:            public void setLocation(String filename, int line)
075:                    throws IOException {
076:                _filename = filename;
077:                _line = line;
078:            }
079:
080:            /**
081:             * Flushes text.
082:             */
083:
084:            /**
085:             * Generates the code for the static text
086:             *
087:             * @param out the output writer for the generated java.
088:             */
089:            protected void flushText() throws IOException {
090:                String filename = _filename;
091:                int line = _line;
092:                _filename = null;
093:
094:                if (_cb.length() > 0) {
095:                    int length = _cb.length();
096:                    _cb.clear();
097:                    generateText(_cb.getBuffer(), 0, length);
098:                }
099:
100:                if (filename != null)
101:                    super .setLocation(filename, line);
102:            }
103:
104:            /**
105:             * Generates text from a string.
106:             *
107:             * @param out the output writer for the generated java.
108:             * @param string the text to generate.
109:             * @param offset the offset into the text.
110:             * @param length the length of the text.
111:             */
112:            private void generateText(char[] text, int offset, int length)
113:                    throws IOException {
114:                if (length > 32000) {
115:                    generateText(text, offset, 16 * 1024);
116:                    generateText(text, offset + 16 * 1024, length - 16 * 1024);
117:                    return;
118:                }
119:
120:                if (length == 1) {
121:                    int ch = text[offset];
122:
123:                    print("out.write('");
124:                    switch (ch) {
125:                    case '\\':
126:                        print("\\\\");
127:                        break;
128:                    case '\'':
129:                        print("\\'");
130:                        break;
131:                    case '\n':
132:                        print("\\n");
133:                        break;
134:                    case '\r':
135:                        print("\\r");
136:                        break;
137:                    default:
138:                        print((char) ch);
139:                        break;
140:                    }
141:
142:                    println("');");
143:                } else {
144:                    int index = _gen
145:                            .addString(new String(text, offset, length));
146:
147:                    print("out.write(_jsp_string" + index + ", 0, ");
148:                    println("_jsp_string" + index + ".length);");
149:                }
150:            }
151:
152:            /**
153:             * Prints a Java escaped string
154:             */
155:            public void printJavaString(String s) throws IOException {
156:                flushText();
157:
158:                super .printJavaString(s);
159:            }
160:
161:            /**
162:             * Pushes an indentation depth.
163:             */
164:            public void pushDepth() throws IOException {
165:                flushText();
166:
167:                super .pushDepth();
168:            }
169:
170:            /**
171:             * Pops an indentation depth.
172:             */
173:            public void popDepth() throws IOException {
174:                flushText();
175:
176:                super .popDepth();
177:            }
178:
179:            /**
180:             * Prints a string
181:             */
182:            public void print(String s) throws IOException {
183:                flushText();
184:
185:                super .print(s);
186:            }
187:
188:            /**
189:             * Prints a character.
190:             */
191:            public void print(char ch) throws IOException {
192:                flushText();
193:
194:                super .print(ch);
195:            }
196:
197:            /**
198:             * Prints a boolean.
199:             */
200:            public void print(boolean b) throws IOException {
201:                flushText();
202:
203:                super .print(b);
204:            }
205:
206:            /**
207:             * Prints an integer.
208:             */
209:            public void print(int i) throws IOException {
210:                flushText();
211:
212:                super .print(i);
213:            }
214:
215:            /**
216:             * Prints an long
217:             */
218:            public void print(long l) throws IOException {
219:                flushText();
220:
221:                super .print(l);
222:            }
223:
224:            /**
225:             * Prints an object.
226:             */
227:            public void print(Object o) throws IOException {
228:                flushText();
229:
230:                super .print(o);
231:            }
232:
233:            /**
234:             * Prints a string with a new line
235:             */
236:            public void println(String s) throws IOException {
237:                flushText();
238:
239:                super .println(s);
240:            }
241:
242:            /**
243:             * Prints a boolean with a new line
244:             */
245:            public void println(boolean v) throws IOException {
246:                flushText();
247:
248:                super .println(v);
249:            }
250:
251:            /**
252:             * Prints a character.
253:             */
254:            public void println(char ch) throws IOException {
255:                flushText();
256:
257:                super .println(ch);
258:            }
259:
260:            /**
261:             * Prints an integer with a new line
262:             */
263:            public void println(int v) throws IOException {
264:                flushText();
265:
266:                super .println(v);
267:            }
268:
269:            /**
270:             * Prints an long with a new line
271:             */
272:            public void println(long v) throws IOException {
273:                flushText();
274:
275:                super .println(v);
276:            }
277:
278:            /**
279:             * Prints an object with a new line
280:             */
281:            public void println(Object v) throws IOException {
282:                flushText();
283:
284:                super .println(v);
285:            }
286:
287:            /**
288:             * Prints a newline
289:             */
290:            public void println() throws IOException {
291:                flushText();
292:
293:                super.println();
294:            }
295:        }
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