Source Code Cross Referenced for OverwriteProperties.java in  » Portal » jetspeed-2.1.3 » org » apache » jetspeed » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » jetspeed 2.1.3 » org.apache.jetspeed.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         * 
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         * 
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:        package org.apache.jetspeed.util;
018:
019:        import java.io.File;
020:        import java.io.BufferedReader;
021:        import java.io.FileNotFoundException;
022:        import java.io.FileOutputStream;
023:        import java.io.FileReader;
024:        import java.io.IOException;
025:
026:        import java.util.ArrayList;
027:        import java.util.HashMap;
028:        import java.util.StringTokenizer;
029:
030:        /**
031:         * Task to overwrite Properties: used for JRP, TRP and Torque.properties
032:         *
033:         * @author     <a href="mailto:taylor@apache.org">David Sean Taylor</a>
034:         * @author     <a href="mailto:epugh@upstate.com">Eric Pugh</a>
035:         * @created    January 29, 2003
036:         * @version    $Id: OverwriteProperties.java 516448 2007-03-09 16:25:47Z ate $
037:         */
038:        public class OverwriteProperties {
039:            /**  The file to merge properties into */
040:            protected File baseProperties;
041:            /**  The file to pull the properties from */
042:            protected File properties;
043:            /**  The directory to look in for include files */
044:            protected File includeRoot;
045:
046:            /**  Description of the Field */
047:            public boolean verbose = false;
048:
049:            /**  An array of all the properties */
050:            protected ArrayList baseArray = new ArrayList(1024);
051:            /**  An array of all the properties that will be removed */
052:            protected ArrayList removeArray = new ArrayList(128);
053:            /**  Description of the Field */
054:            protected HashMap baseMap = new HashMap();
055:            /**  What to use as a line seperator */
056:            protected String lineSeparator = System.getProperty(
057:                    "line.separator", "\r\n");
058:
059:            /**
060:             *  Sets the file to merge properties into
061:             *
062:             * @param  baseProperties  The file path to merge properties into
063:             */
064:            public void setBaseProperties(File baseProperties) {
065:                this .baseProperties = baseProperties;
066:            }
067:
068:            /**
069:             *  Sets the file to pull properties from
070:             *
071:             * @param  properties  The file path to the pull the merge properties from
072:             */
073:            public void setProperties(File properties) {
074:                this .properties = properties;
075:            }
076:
077:            /**
078:             *  Sets the directory to look for includes in.
079:             *
080:             * @param  includeRoot  the directory to look in.
081:             */
082:            public void setIncludeRoot(File includeRoot) {
083:                this .includeRoot = includeRoot;
084:            }
085:
086:            /**
087:             *  Sets whether to output extra debugging info
088:             *
089:             * @param  verbose  The new verbose value
090:             */
091:            public void setVerbose(boolean verbose) {
092:                this .verbose = verbose;
093:            }
094:
095:            /**
096:             *  Return the file to merge propertie into
097:             *
098:             * @return    The baseProperties value
099:             */
100:            public File getBaseProperties() {
101:                return baseProperties;
102:            }
103:
104:            /**
105:             *  Gets the properties attribute of the OverwriteProperties object
106:             *
107:             * @return    The properties value
108:             */
109:            public File getProperties() {
110:                return properties;
111:            }
112:
113:            /**
114:             *  Gets the includeRoot attribute of the OverwriteProperties object
115:             *
116:             * @return    The includeRoot value
117:             */
118:            public File getIncludeRoot() {
119:                return includeRoot;
120:            }
121:
122:            /**
123:             *  Gets the verbose attribute of the OverwriteProperties object
124:             *
125:             * @return    The verbose value
126:             */
127:            public boolean getVerbose() {
128:                return verbose;
129:            }
130:
131:            /**
132:             *  The main program for the OverwriteProperties class
133:             *
134:             * @param  args           The command line arguments
135:             * @exception  Exception  Description of the Exception
136:             */
137:            public static void main(String[] args) throws Exception {
138:                OverwriteProperties overwriteProperties = new OverwriteProperties();
139:
140:                try {
141:                    if (args.length < 3) {
142:                        System.out
143:                                .println("Usage: java OverwriteProperties c:/temp/File1.props c:/temp/File2.props c:/include-root/");
144:                        System.out
145:                                .println("Usage: File1 will be modified, new parameters from File 2 will be added,");
146:                        System.out
147:                                .println("Usage: and same parameters will be updated. The include-root is where include files are found.");
148:                        throw new Exception(
149:                                "Incorrect number of arguments supplied");
150:                    }
151:                    overwriteProperties.setBaseProperties(new File(args[0]));
152:                    overwriteProperties.setProperties(new File(args[1]));
153:                    overwriteProperties.setIncludeRoot(new File(args[2]));
154:
155:                    overwriteProperties.execute();
156:
157:                } catch (FileNotFoundException ex) {
158:                    System.err.println(ex.getMessage());
159:                } catch (IOException ex) {
160:                    System.err.println(ex.getMessage());
161:                } catch (SecurityException ex) {
162:                    System.err.println(ex.getMessage());
163:                }
164:            }
165:
166:            /**  Description of the Method */
167:            public void execute() throws FileNotFoundException, IOException,
168:                    SecurityException {
169:
170:                if (verbose) {
171:                    System.out.println("Merging into file "
172:                            + getBaseProperties() + " file " + getProperties());
173:                }
174:
175:                if (!getBaseProperties().exists()) {
176:                    throw new FileNotFoundException("Could not find file:"
177:                            + getBaseProperties());
178:                }
179:
180:                if (!getProperties().exists()) {
181:                    throw new FileNotFoundException("Could not find file:"
182:                            + getProperties());
183:                }
184:
185:                if (!getIncludeRoot().exists()
186:                        || !getIncludeRoot().isDirectory()) {
187:                    throw new FileNotFoundException("Could not find directory:"
188:                            + getIncludeRoot());
189:                }
190:
191:                BufferedReader reader = new BufferedReader(new FileReader(
192:                        baseProperties));
193:                int index = 0;
194:                String key = null;
195:                String line = null;
196:                while ((line = reader.readLine()) != null) {
197:                    StringTokenizer tokenizer = new StringTokenizer(line, "=");
198:                    baseArray.add(index, line);
199:                    if (verbose) {
200:                        System.out.println("While reading baseArray[" + index
201:                                + "] = " + line);
202:                    }
203:                    if (tokenizer.countTokens() >= 1 && !line.startsWith("#")
204:                            && !line.startsWith("include")
205:                            && !line.startsWith("module.packages")) {
206:                        key = tokenizer.nextToken().trim();
207:                        if (key != null && key.length() > 0) {
208:                            baseMap.put(key, new Integer(index));
209:                            if (verbose) {
210:                                System.out.println("baseMap[" + key + ","
211:                                        + index + "]");
212:                            }
213:                        }
214:                    }
215:                    index++;
216:                }
217:                reader.close();
218:                if (verbose) {
219:                    System.out.println("\nOverwrite with Delta\n");
220:                }
221:
222:                readProperties(properties, index);
223:
224:                boolean flags[] = removeProperties();
225:
226:                baseArray.trimToSize();
227:                writeToFile(flags);
228:
229:            }
230:
231:            /**
232:             *  Description of the Method
233:             *
234:             * @param  flags                      Description of the Parameter
235:             * @exception  FileNotFoundException  Description of the Exception
236:             * @exception  IOException            Description of the Exception
237:             */
238:            public void writeToFile(boolean[] flags)
239:                    throws FileNotFoundException, IOException {
240:                FileOutputStream writer = new FileOutputStream(baseProperties);
241:                writer.flush();
242:                for (int i = 0; i < baseArray.size(); i++) {
243:                    if (true == flags[i]) {
244:                        if (verbose) {
245:                            System.out.println("Skipping property[" + i
246:                                    + "] = " + baseArray.get(i));
247:                        }
248:                        continue;
249:                    }
250:                    if (verbose) {
251:                        System.out.println("Writing property[" + i + "] = "
252:                                + baseArray.get(i));
253:                    }
254:                    writer.write(((String) baseArray.get(i)).getBytes());
255:                    writer.write(lineSeparator.getBytes());
256:                    writer.flush();
257:                }
258:                writer.close();
259:
260:            }
261:
262:            /**
263:             *  Description of the Method
264:             *
265:             * @return    Description of the Return Value
266:             */
267:            public boolean[] removeProperties() {
268:
269:                boolean flags[] = new boolean[baseArray.size()];
270:
271:                for (int i = 0; i < baseArray.size(); i++) {
272:                    flags[i] = false;
273:                }
274:                for (int ix = 0; ix < removeArray.size(); ix++) {
275:                    String prefix = (String) removeArray.get(ix);
276:                    for (int iy = 0; iy < baseArray.size(); iy++) {
277:                        String line = (String) baseArray.get(iy);
278:                        if (line.startsWith(prefix)) {
279:                            flags[iy] = true;
280:                            if (verbose) {
281:                                System.out
282:                                        .println("flagging removal of property: "
283:                                                + line);
284:                            }
285:                        }
286:                    }
287:                }
288:                return flags;
289:            }
290:
291:            /**
292:             *  Reads in the properties from the specified file
293:             *
294:             * @param  propFile                   Description of the Parameter
295:             * @param  index                      Description of the Parameter
296:             * @exception  FileNotFoundException  Description of the Exception
297:             * @exception  IOException            Description of the Exception
298:             */
299:            public void readProperties(File propFile, int index)
300:                    throws FileNotFoundException, IOException {
301:                BufferedReader reader = new BufferedReader(new FileReader(
302:                        propFile));
303:                String key = null;
304:                String line = null;
305:
306:                while ((line = reader.readLine()) != null) {
307:                    StringTokenizer tokenizer = new StringTokenizer(line, "=");
308:
309:                    int count = tokenizer.countTokens();
310:                    if (count == 2 && line.startsWith("include")) {
311:                        key = tokenizer.nextToken().trim();
312:                        File includeFile = new File(includeRoot
313:                                + tokenizer.nextToken().trim());
314:                        if (verbose) {
315:                            System.out.println("include File = " + includeFile);
316:                        }
317:                        readProperties(includeFile, index);
318:                        continue;
319:                    }
320:                    if (count >= 1 && line.startsWith("module.packages")) {
321:                        baseArray.add(index, line);
322:                        if (verbose) {
323:                            System.out
324:                                    .println("Adding module.package to baseArray["
325:                                            + index + "] = " + line);
326:                        }
327:                        index++;
328:
329:                        key = line.trim();
330:                        if (baseMap.containsKey(key)) {
331:                            int ix = ((Integer) baseMap.get(key)).intValue();
332:                            baseArray.set(ix, line);
333:                            if (verbose) {
334:                                System.out.println("Resetting baseArray[" + ix
335:                                        + "] = " + line);
336:                            }
337:                        }
338:
339:                        continue;
340:                    }
341:                    if (count >= 1 && line.startsWith("-")) {
342:                        // remove from base
343:
344:                        String prefix = line.trim().substring(1);
345:                        removeArray.add(prefix);
346:                        if (verbose) {
347:                            System.out
348:                                    .println("Flagging for removal = " + line);
349:                        }
350:                        continue;
351:                    }
352:                    if (count >= 1 && !line.startsWith("#")) {
353:                        key = tokenizer.nextToken().trim();
354:                        if (key != null && key.length() > 0) {
355:                            if (baseMap.containsKey(key)) {
356:                                int ix = ((Integer) baseMap.get(key))
357:                                        .intValue();
358:                                baseArray.set(ix, line);
359:                                if (verbose) {
360:                                    System.out.println("Resetting baseArray["
361:                                            + ix + "] = " + line);
362:                                }
363:                            } else {
364:                                baseArray.add(index, line);
365:                                if (verbose) {
366:                                    System.out
367:                                            .println("Adding new entry to baseArray["
368:                                                    + index + "] = " + line);
369:                                }
370:                                baseMap.put(key, new Integer(index));
371:                                if (verbose) {
372:                                    System.out.println("baseMap[" + key + ","
373:                                            + index + "]");
374:                                }
375:                                index++;
376:                            }
377:                        }
378:                    }
379:
380:                }
381:                reader.close();
382:
383:            }
384:
385:        }
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