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1   package org.apache.maven.plugin.surefire;
2   
3   import java.util.ArrayList;
4   import java.util.Iterator;
5   import java.util.List;
6   
7   import org.apache.maven.plugin.AbstractMojo;
8   import org.apache.maven.plugin.MojoExecutionException;
9   
10  /**
11   * Display help information on maven-surefire-plugin.<br/> Call <pre>  mvn surefire:help -Ddetail=true -Dgoal=&lt;goal-name&gt;</pre> to display parameter details.
12   *
13   * @version generated on Mon Sep 26 16:26:12 CDT 2011
14   * @author org.apache.maven.tools.plugin.generator.PluginHelpGenerator (version 2.8)
15   * @goal help
16   * @requiresProject false
17   * @threadSafe
18   */
19  public class HelpMojo
20      extends AbstractMojo
21  {
22      /**
23       * If <code>true</code>, display all settable properties for each goal.
24       * 
25       * @parameter expression="${detail}" default-value="false"
26       */
27      private boolean detail;
28  
29      /**
30       * The name of the goal for which to show help. If unspecified, all goals will be displayed.
31       * 
32       * @parameter expression="${goal}"
33       */
34      private java.lang.String goal;
35  
36      /**
37       * The maximum length of a display line, should be positive.
38       * 
39       * @parameter expression="${lineLength}" default-value="80"
40       */
41      private int lineLength;
42  
43      /**
44       * The number of spaces per indentation level, should be positive.
45       * 
46       * @parameter expression="${indentSize}" default-value="2"
47       */
48      private int indentSize;
49  
50  
51      /** {@inheritDoc} */
52      public void execute()
53          throws MojoExecutionException
54      {
55          if ( lineLength <= 0 )
56          {
57              getLog().warn( "The parameter 'lineLength' should be positive, using '80' as default." );
58              lineLength = 80;
59          }
60          if ( indentSize <= 0 )
61          {
62              getLog().warn( "The parameter 'indentSize' should be positive, using '2' as default." );
63              indentSize = 2;
64          }
65  
66          StringBuffer sb = new StringBuffer();
67  
68          append( sb, "org.apache.maven.plugins:maven-surefire-plugin:2.10", 0 );
69          append( sb, "", 0 );
70  
71          append( sb, "Maven Surefire Plugin", 0 );
72          append( sb, "Surefire is a test framework project.", 1 );
73          append( sb, "", 0 );
74  
75          if ( goal == null || goal.length() <= 0 )
76          {
77              append( sb, "This plugin has 2 goals:", 0 );
78              append( sb, "", 0 );
79          }
80  
81          if ( goal == null || goal.length() <= 0 || "help".equals( goal ) )
82          {
83              append( sb, "surefire:help", 0 );
84              append( sb, "Display help information on maven-surefire-plugin.\nCall\n\u00a0\u00a0mvn\u00a0surefire:help\u00a0-Ddetail=true\u00a0-Dgoal=<goal-name>\nto display parameter details.", 1 );
85              append( sb, "", 0 );
86              if ( detail )
87              {
88                  append( sb, "Available parameters:", 1 );
89                  append( sb, "", 0 );
90  
91                  append( sb, "detail (Default: false)", 2 );
92                  append( sb, "If true, display all settable properties for each goal.", 3 );
93                  append( sb, "Expression: ${detail}", 3 );
94                  append( sb, "", 0 );
95  
96                  append( sb, "goal", 2 );
97                  append( sb, "The name of the goal for which to show help. If unspecified, all goals will be displayed.", 3 );
98                  append( sb, "Expression: ${goal}", 3 );
99                  append( sb, "", 0 );
100 
101                 append( sb, "indentSize (Default: 2)", 2 );
102                 append( sb, "The number of spaces per indentation level, should be positive.", 3 );
103                 append( sb, "Expression: ${indentSize}", 3 );
104                 append( sb, "", 0 );
105 
106                 append( sb, "lineLength (Default: 80)", 2 );
107                 append( sb, "The maximum length of a display line, should be positive.", 3 );
108                 append( sb, "Expression: ${lineLength}", 3 );
109                 append( sb, "", 0 );
110             }
111         }
112 
113         if ( goal == null || goal.length() <= 0 || "test".equals( goal ) )
114         {
115             append( sb, "surefire:test", 0 );
116             append( sb, "Run tests using Surefire.", 1 );
117             append( sb, "", 0 );
118             if ( detail )
119             {
120                 append( sb, "Available parameters:", 1 );
121                 append( sb, "", 0 );
122 
123                 append( sb, "additionalClasspathElements", 2 );
124                 append( sb, "Additional elements to be appended to the classpath.", 3 );
125                 append( sb, "", 0 );
126 
127                 append( sb, "argLine", 2 );
128                 append( sb, "Arbitrary JVM options to set on the command line.", 3 );
129                 append( sb, "Expression: ${argLine}", 3 );
130                 append( sb, "", 0 );
131 
132                 append( sb, "basedir (Default: ${basedir})", 2 );
133                 append( sb, "The base directory of the project being tested. This can be obtained in your unit test via System.getProperty(\'basedir\').", 3 );
134                 append( sb, "", 0 );
135 
136                 append( sb, "childDelegation (Default: false)", 2 );
137                 append( sb, "When false it makes tests run using the standard classloader delegation instead of the default Maven isolated classloader. Only used when forking (forkMode is not \'none\').\nSetting it to false helps with some problems caused by conflicts between xml parsers in the classpath and the Java 5 provider parser.", 3 );
138                 append( sb, "Expression: ${childDelegation}", 3 );
139                 append( sb, "", 0 );
140 
141                 append( sb, "classesDirectory (Default: ${project.build.outputDirectory})", 2 );
142                 append( sb, "The directory containing generated classes of the project being tested. This will be included after the test classes in the test classpath.", 3 );
143                 append( sb, "", 0 );
144 
145                 append( sb, "classpathDependencyExcludes", 2 );
146                 append( sb, "List of dependencies to exclude from the test classpath. Each dependency string must follow the format groupId:artifactId. For example: org.acme:project-a", 3 );
147                 append( sb, "", 0 );
148 
149                 append( sb, "classpathDependencyScopeExclude", 2 );
150                 append( sb, "A dependency scope to exclude from the test classpath. The scope can be one of the following scopes:\n-\tcompile - system, provided, compile\n-\truntime - compile, runtime\n-\ttest - system, provided, compile, runtime, test\n", 3 );
151                 append( sb, "", 0 );
152 
153                 append( sb, "debugForkedProcess", 2 );
154                 append( sb, "Attach a debugger to the forked JVM. If set to \'true\', the process will suspend and wait for a debugger to attach on port 5005. If set to some other string, that string will be appended to the argLine, allowing you to configure arbitrary debuggability options (without overwriting the other options specified through the argLine parameter).", 3 );
155                 append( sb, "Expression: ${maven.surefire.debug}", 3 );
156                 append( sb, "", 0 );
157 
158                 append( sb, "disableXmlReport (Default: false)", 2 );
159                 append( sb, "Flag to disable the generation of report files in xml format.", 3 );
160                 append( sb, "Expression: ${disableXmlReport}", 3 );
161                 append( sb, "", 0 );
162 
163                 append( sb, "enableAssertions (Default: true)", 2 );
164                 append( sb, "By default, Surefire enables JVM assertions for the execution of your test cases. To disable the assertions, set this flag to \'false\'.", 3 );
165                 append( sb, "Expression: ${enableAssertions}", 3 );
166                 append( sb, "", 0 );
167 
168                 append( sb, "environmentVariables", 2 );
169                 append( sb, "Additional environment variables to set on the command line.", 3 );
170                 append( sb, "", 0 );
171 
172                 append( sb, "excludedGroups", 2 );
173                 append( sb, "(TestNG only) Excluded groups. Any methods/classes/etc with one of the groups specified in this list will specifically not be run.\nThis parameter is ignored if the suiteXmlFiles parameter is specified.", 3 );
174                 append( sb, "Expression: ${excludedGroups}", 3 );
175                 append( sb, "", 0 );
176 
177                 append( sb, "excludes", 2 );
178                 append( sb, "A list of <exclude> elements specifying the tests (by pattern) that should be excluded in testing. When not specified and when the test parameter is not specified, the default excludes will be \n<excludes>\n\u00a0<exclude>**/*$*</exclude>\n</excludes>\n(which excludes all inner classes).\nThis parameter is ignored if the TestNG suiteXmlFiles parameter is specified.", 3 );
179                 append( sb, "", 0 );
180 
181                 append( sb, "failIfNoTests", 2 );
182                 append( sb, "Set this to \'true\' to cause a failure if there are no tests to run. Defaults to \'false\'.", 3 );
183                 append( sb, "Expression: ${failIfNoTests}", 3 );
184                 append( sb, "", 0 );
185 
186                 append( sb, "forkedProcessTimeoutInSeconds", 2 );
187                 append( sb, "Kill the forked test process after a certain number of seconds. If set to 0, wait forever for the process, never timing out.", 3 );
188                 append( sb, "Expression: ${surefire.timeout}", 3 );
189                 append( sb, "", 0 );
190 
191                 append( sb, "forkMode (Default: once)", 2 );
192                 append( sb, "Option to specify the forking mode. Can be \'never\', \'once\' or \'always\'. \'none\' and \'pertest\' are also accepted for backwards compatibility. \'always\' forks for each test-class.", 3 );
193                 append( sb, "Expression: ${forkMode}", 3 );
194                 append( sb, "", 0 );
195 
196                 append( sb, "groups", 2 );
197                 append( sb, "(TestNG only) Groups for this test. Only classes/methods/etc decorated with one of the groups specified here will be included in test run, if specified.\nThis parameter is ignored if the suiteXmlFiles parameter is specified.", 3 );
198                 append( sb, "Expression: ${groups}", 3 );
199                 append( sb, "", 0 );
200 
201                 append( sb, "includes", 2 );
202                 append( sb, "A list of <include> elements specifying the tests (by pattern) that should be included in testing. When not specified and when the test parameter is not specified, the default includes will be \n<includes>\n\u00a0<include>**/Test*.java</include>\n\u00a0<include>**/*Test.java</include>\n\u00a0<include>**/*TestCase.java</include>\n</includes>\nThis parameter is ignored if the TestNG suiteXmlFiles parameter is specified.", 3 );
203                 append( sb, "", 0 );
204 
205                 append( sb, "junitArtifactName (Default: junit:junit)", 2 );
206                 append( sb, "Allows you to specify the name of the JUnit artifact. If not set, junit:junit will be used.", 3 );
207                 append( sb, "Expression: ${junitArtifactName}", 3 );
208                 append( sb, "", 0 );
209 
210                 append( sb, "jvm", 2 );
211                 append( sb, "Option to specify the jvm (or path to the java executable) to use with the forking options. For the default, the jvm will be a new instance of the same VM as the one used to run Maven. JVM settings are not inherited from MAVEN_OPTS.", 3 );
212                 append( sb, "Expression: ${jvm}", 3 );
213                 append( sb, "", 0 );
214 
215                 append( sb, "objectFactory", 2 );
216                 append( sb, "(TestNG only) Define the factory class used to create all test instances.", 3 );
217                 append( sb, "Expression: ${objectFactory}", 3 );
218                 append( sb, "", 0 );
219 
220                 append( sb, "parallel", 2 );
221                 append( sb, "(TestNG only) When you use the parallel attribute, TestNG will try to run all your test methods in separate threads, except for methods that depend on each other, which will be run in the same thread in order to respect their order of execution. (JUnit 4.7 provider) Supports values \'classes\'/\'methods\'/\'both\' to run in separate threads, as controlled by threadCount.", 3 );
222                 append( sb, "Expression: ${parallel}", 3 );
223                 append( sb, "", 0 );
224 
225                 append( sb, "perCoreThreadCount (Default: true)", 2 );
226                 append( sb, "(JUnit 4.7 provider) Indicates that threadCount is per cpu core.", 3 );
227                 append( sb, "Expression: ${perCoreThreadCount}", 3 );
228                 append( sb, "", 0 );
229 
230                 append( sb, "printSummary (Default: true)", 2 );
231                 append( sb, "Option to print summary of test suites or just print the test cases that have errors.", 3 );
232                 append( sb, "Expression: ${surefire.printSummary}", 3 );
233                 append( sb, "", 0 );
234 
235                 append( sb, "properties", 2 );
236                 append( sb, "List of properties for configuring all TestNG related configurations. This is the new preferred method of configuring TestNG.", 3 );
237                 append( sb, "", 0 );
238 
239                 append( sb, "redirectTestOutputToFile (Default: false)", 2 );
240                 append( sb, "Set this to \'true\' to redirect the unit test standard output to a file (found in reportsDirectory/testName-output.txt).", 3 );
241                 append( sb, "Expression: ${maven.test.redirectTestOutputToFile}", 3 );
242                 append( sb, "", 0 );
243 
244                 append( sb, "remoteRepositories", 2 );
245                 append( sb, "The remote plugin repositories declared in the POM.", 3 );
246                 append( sb, "Expression: ${project.pluginArtifactRepositories}", 3 );
247                 append( sb, "", 0 );
248 
249                 append( sb, "reportFormat (Default: brief)", 2 );
250                 append( sb, "Selects the formatting for the test report to be generated. Can be set as \'brief\' or \'plain\'.", 3 );
251                 append( sb, "Expression: ${surefire.reportFormat}", 3 );
252                 append( sb, "", 0 );
253 
254                 append( sb, "reportNameSuffix", 2 );
255                 append( sb, "Add custom text into report filename: TEST-testClassName-reportNameSuffix.xml, testClassName-reportNameSuffix.txt and testClassName-reportNameSuffix-output.txt. File TEST-testClassName-reportNameSuffix.xml has changed attributes \'testsuite\'--\'name\' and \'testcase\'--\'classname\' - reportNameSuffix is added to the attribute value.", 3 );
256                 append( sb, "Expression: ${surefire.reportNameSuffix}", 3 );
257                 append( sb, "", 0 );
258 
259                 append( sb, "reportsDirectory (Default: ${project.build.directory}/surefire-reports)", 2 );
260                 append( sb, "Base directory where all reports are written to.", 3 );
261                 append( sb, "", 0 );
262 
263                 append( sb, "runOrder (Default: filesystem)", 2 );
264                 append( sb, "Defines the order the tests will be run in. Supported values are \'alphabetical\', \'reversealphabetical\', \'random\', \'hourly\' (alphabetical on even hours, reverse alphabetical on odd hours) and \'filesystem\'. Odd/Even for hourly is determined at the time the of scanning the classpath, meaning it could change during a multi-module build.", 3 );
265                 append( sb, "", 0 );
266 
267                 append( sb, "skip (Default: false)", 2 );
268                 append( sb, "Set this to \'true\' to bypass unit tests entirely. Its use is NOT RECOMMENDED, especially if you enable it using the \'maven.test.skip\' property, because maven.test.skip disables both running the tests and compiling the tests. Consider using the skipTests parameter instead.", 3 );
269                 append( sb, "Expression: ${maven.test.skip}", 3 );
270                 append( sb, "", 0 );
271 
272                 append( sb, "skipExec", 2 );
273                 append( sb, "Deprecated. Use skipTests instead.", 3 );
274                 append( sb, "", 0 );
275                 append( sb, "This old parameter is just like skipTests, but bound to the old property \'maven.test.skip.exec\'.", 3 );
276                 append( sb, "Expression: ${maven.test.skip.exec}", 3 );
277                 append( sb, "", 0 );
278 
279                 append( sb, "skipTests (Default: false)", 2 );
280                 append( sb, "Set this to \'true\' to skip running tests, but still compile them. Its use is NOT RECOMMENDED, but quite convenient on occasion.", 3 );
281                 append( sb, "Expression: ${skipTests}", 3 );
282                 append( sb, "", 0 );
283 
284                 append( sb, "suiteXmlFiles", 2 );
285                 append( sb, "(TestNG only) List of <suiteXmlFile> elements specifying TestNG suite xml file locations. Note that suiteXmlFiles is incompatible with several other parameters of this plugin, like includes/excludes.\nThis parameter is ignored if the test parameter is specified (allowing you to run a single test instead of an entire suite).", 3 );
286                 append( sb, "", 0 );
287 
288                 append( sb, "systemProperties", 2 );
289                 append( sb, "Deprecated. Use systemPropertyVariables instead.", 3 );
290                 append( sb, "", 0 );
291                 append( sb, "List of System properties to pass to the JUnit tests.", 3 );
292                 append( sb, "", 0 );
293 
294                 append( sb, "systemPropertiesFile", 2 );
295                 append( sb, "List of System properties, loaded from a file, to pass to the JUnit tests.", 3 );
296                 append( sb, "", 0 );
297 
298                 append( sb, "systemPropertyVariables", 2 );
299                 append( sb, "List of System properties to pass to the JUnit tests.", 3 );
300                 append( sb, "", 0 );
301 
302                 append( sb, "test", 2 );
303                 append( sb, "Specify this parameter to run individual tests by file name, overriding the includes/excludes parameters. Each pattern you specify here will be used to create an include pattern formatted like **/${test}.java, so you can just type \'-Dtest=MyTest\' to run a single test called \'foo/MyTest.java\'.\nThis parameter overrides the includes/excludes parameters, and the TestNG suiteXmlFiles parameter. since 2.7.3 You can execute a limited number of method in the test with adding #myMethod or #my*ethod. Si type \'-Dtest=MyTest#myMethod\' supported for junit 4.x and testNg", 3 );
304                 append( sb, "Expression: ${test}", 3 );
305                 append( sb, "", 0 );
306 
307                 append( sb, "testClassesDirectory (Default: ${project.build.testOutputDirectory})", 2 );
308                 append( sb, "The directory containing generated test classes of the project being tested. This will be included at the beginning of the test classpath. *", 3 );
309                 append( sb, "", 0 );
310 
311                 append( sb, "testFailureIgnore (Default: false)", 2 );
312                 append( sb, "Set this to \'true\' to ignore a failure during testing. Its use is NOT RECOMMENDED, but quite convenient on occasion.", 3 );
313                 append( sb, "Expression: ${maven.test.failure.ignore}", 3 );
314                 append( sb, "", 0 );
315 
316                 append( sb, "testNGArtifactName (Default: org.testng:testng)", 2 );
317                 append( sb, "Allows you to specify the name of the TestNG artifact. If not set, org.testng:testng will be used.", 3 );
318                 append( sb, "Expression: ${testNGArtifactName}", 3 );
319                 append( sb, "", 0 );
320 
321                 append( sb, "testSourceDirectory (Default: ${project.build.testSourceDirectory})", 2 );
322                 append( sb, "The test source directory containing test class sources.", 3 );
323                 append( sb, "Required: Yes", 3 );
324                 append( sb, "", 0 );
325 
326                 append( sb, "threadCount", 2 );
327                 append( sb, "(TestNG/JUnit 4.7 provider only) The attribute thread-count allows you to specify how many threads should be allocated for this execution. Only makes sense to use in conjunction with the parallel parameter.", 3 );
328                 append( sb, "Expression: ${threadCount}", 3 );
329                 append( sb, "", 0 );
330 
331                 append( sb, "trimStackTrace (Default: true)", 2 );
332                 append( sb, "Whether to trim the stack trace in the reports to just the lines within the test, or show the full trace.", 3 );
333                 append( sb, "Expression: ${trimStackTrace}", 3 );
334                 append( sb, "", 0 );
335 
336                 append( sb, "useFile (Default: true)", 2 );
337                 append( sb, "Option to generate a file test report or just output the test report to the console.", 3 );
338                 append( sb, "Expression: ${surefire.useFile}", 3 );
339                 append( sb, "", 0 );
340 
341                 append( sb, "useManifestOnlyJar (Default: true)", 2 );
342                 append( sb, "By default, Surefire forks your tests using a manifest-only JAR; set this parameter to \'false\' to force it to launch your tests with a plain old Java classpath. (See http://maven.apache.org/plugins/maven-surefire-plugin/examples/class-loading.html for a more detailed explanation of manifest-only JARs and their benefits.) Beware, setting this to \'false\' may cause your tests to fail on Windows if your classpath is too long.", 3 );
343                 append( sb, "Expression: ${surefire.useManifestOnlyJar}", 3 );
344                 append( sb, "", 0 );
345 
346                 append( sb, "useSystemClassLoader (Default: true)", 2 );
347                 append( sb, "Option to pass dependencies to the system\'s classloader instead of using an isolated class loader when forking. Prevents problems with JDKs which implement the service provider lookup mechanism by using the system\'s classloader.", 3 );
348                 append( sb, "Expression: ${surefire.useSystemClassLoader}", 3 );
349                 append( sb, "", 0 );
350 
351                 append( sb, "useUnlimitedThreads (Default: false)", 2 );
352                 append( sb, "(JUnit 4.7 provider) Indicates that the thread pool will be unlimited. The parallel parameter and the actual number of classes/methods will decide. Setting this to \'true\' effectively disables perCoreThreadCount and threadCount. Defaults to \'false\'.", 3 );
353                 append( sb, "Expression: ${useUnlimitedThreads}", 3 );
354                 append( sb, "", 0 );
355 
356                 append( sb, "workingDirectory", 2 );
357                 append( sb, "Command line working directory.", 3 );
358                 append( sb, "Expression: ${basedir}", 3 );
359                 append( sb, "", 0 );
360             }
361         }
362 
363         if ( getLog().isInfoEnabled() )
364         {
365             getLog().info( sb.toString() );
366         }
367     }
368 
369     /**
370      * <p>Repeat a String <code>n</code> times to form a new string.</p>
371      *
372      * @param str String to repeat
373      * @param repeat number of times to repeat str
374      * @return String with repeated String
375      * @throws NegativeArraySizeException if <code>repeat < 0</code>
376      * @throws NullPointerException if str is <code>null</code>
377      */
378     private static String repeat( String str, int repeat )
379     {
380         StringBuffer buffer = new StringBuffer( repeat * str.length() );
381 
382         for ( int i = 0; i < repeat; i++ )
383         {
384             buffer.append( str );
385         }
386 
387         return buffer.toString();
388     }
389 
390     /** 
391      * Append a description to the buffer by respecting the indentSize and lineLength parameters.
392      * <b>Note</b>: The last character is always a new line.
393      * 
394      * @param sb The buffer to append the description, not <code>null</code>.
395      * @param description The description, not <code>null</code>.
396      * @param indent The base indentation level of each line, must not be negative.
397      */
398     private void append( StringBuffer sb, String description, int indent )
399     {
400         for ( Iterator it = toLines( description, indent, indentSize, lineLength ).iterator(); it.hasNext(); )
401         {
402             sb.append( it.next().toString() ).append( '\n' );
403         }
404     }
405 
406     /** 
407      * Splits the specified text into lines of convenient display length.
408      * 
409      * @param text The text to split into lines, must not be <code>null</code>.
410      * @param indent The base indentation level of each line, must not be negative.
411      * @param indentSize The size of each indentation, must not be negative.
412      * @param lineLength The length of the line, must not be negative.
413      * @return The sequence of display lines, never <code>null</code>.
414      * @throws NegativeArraySizeException if <code>indent < 0</code>
415      */
416     private static List toLines( String text, int indent, int indentSize, int lineLength )
417     {
418         List lines = new ArrayList();
419 
420         String ind = repeat( "\t", indent );
421         String[] plainLines = text.split( "(\r\n)|(\r)|(\n)" );
422         for ( int i = 0; i < plainLines.length; i++ )
423         {
424             toLines( lines, ind + plainLines[i], indentSize, lineLength );
425         }
426 
427         return lines;
428     }
429 
430     /** 
431      * Adds the specified line to the output sequence, performing line wrapping if necessary.
432      * 
433      * @param lines The sequence of display lines, must not be <code>null</code>.
434      * @param line The line to add, must not be <code>null</code>.
435      * @param indentSize The size of each indentation, must not be negative.
436      * @param lineLength The length of the line, must not be negative.
437      */
438     private static void toLines( List lines, String line, int indentSize, int lineLength )
439     {
440         int lineIndent = getIndentLevel( line );
441         StringBuffer buf = new StringBuffer( 256 );
442         String[] tokens = line.split( " +" );
443         for ( int i = 0; i < tokens.length; i++ )
444         {
445             String token = tokens[i];
446             if ( i > 0 )
447             {
448                 if ( buf.length() + token.length() >= lineLength )
449                 {
450                     lines.add( buf.toString() );
451                     buf.setLength( 0 );
452                     buf.append( repeat( " ", lineIndent * indentSize ) );
453                 }
454                 else
455                 {
456                     buf.append( ' ' );
457                 }
458             }
459             for ( int j = 0; j < token.length(); j++ )
460             {
461                 char c = token.charAt( j );
462                 if ( c == '\t' )
463                 {
464                     buf.append( repeat( " ", indentSize - buf.length() % indentSize ) );
465                 }
466                 else if ( c == '\u00A0' )
467                 {
468                     buf.append( ' ' );
469                 }
470                 else
471                 {
472                     buf.append( c );
473                 }
474             }
475         }
476         lines.add( buf.toString() );
477     }
478 
479     /** 
480      * Gets the indentation level of the specified line.
481      * 
482      * @param line The line whose indentation level should be retrieved, must not be <code>null</code>.
483      * @return The indentation level of the line.
484      */
485     private static int getIndentLevel( String line )
486     {
487         int level = 0;
488         for ( int i = 0; i < line.length() && line.charAt( i ) == '\t'; i++ )
489         {
490             level++;
491         }
492         for ( int i = level + 1; i <= level + 4 && i < line.length(); i++ )
493         {
494             if ( line.charAt( i ) == '\t' )
495             {
496                 level++;
497                 break;
498             }
499         }
500         return level;
501     }
502 }