src/org/argeo/build/Make.java

   1 package org.argeo.build;
   2
   3 import static java.lang.System.Logger.Level.DEBUG;
   4 import static java.lang.System.Logger.Level.ERROR;
   5 import static java.lang.System.Logger.Level.INFO;
   6 import static java.lang.System.Logger.Level.WARNING;
   7
   8 import java.io.File;
   9 import java.io.IOException;
  10 import java.io.InputStream;
  11 import java.io.OutputStream;
  12 import java.io.PrintWriter;
  13 import java.lang.System.Logger;
  14 import java.lang.System.Logger.Level;
  15 import java.lang.management.ManagementFactory;
  16 import java.nio.file.FileVisitResult;
  17 import java.nio.file.Files;
  18 import java.nio.file.Path;
  19 import java.nio.file.PathMatcher;
  20 import java.nio.file.Paths;
  21 import java.nio.file.SimpleFileVisitor;
  22 import java.nio.file.attribute.BasicFileAttributes;
  23 import java.util.ArrayList;
  24 import java.util.Arrays;
  25 import java.util.HashMap;
  26 import java.util.Iterator;
  27 import java.util.List;
  28 import java.util.Map;
  29 import java.util.Objects;
  30 import java.util.Properties;
  31 import java.util.StringJoiner;
  32 import java.util.StringTokenizer;
  33 import java.util.TreeMap;
  34 import java.util.concurrent.CompletableFuture;
  35 import java.util.jar.Attributes;
  36 import java.util.jar.JarEntry;
  37 import java.util.jar.JarOutputStream;
  38 import java.util.jar.Manifest;
  39 import java.util.zip.Deflater;
  40
  41 import org.eclipse.jdt.core.compiler.CompilationProgress;
  42
  43 import aQute.bnd.osgi.Analyzer;
  44 import aQute.bnd.osgi.Jar;
  45
  46 /**
  47  * Minimalistic OSGi compiler and packager, meant to be used as a single file
  48  * without being itself compiled first. It depends on the Eclipse batch compiler
  49  * (aka. ECJ) and the BND Libs library for OSGi metadata generation (which
  50  * itselfs depends on slf4j).<br/>
  51  * <br/>
  52  * For example, a typical system call would be:<br/>
  53  * <code>java -cp "/path/to/ECJ jar:/path/to/bndlib jar:/path/to/SLF4J jar" /path/to/cloned/argeo-build/src/org/argeo/build/Make.java action --option1 argument1 argument2 --option2 argument3 </code>
  54  */
  55 public class Make {
  56         private final static Logger logger = System.getLogger(Make.class.getName());
  57
  58         /**
  59          * Environment variable on whether sources should be packaged separately or
  60          * integrated in the bundles.
  61          */
  62         private final static String ENV_SOURCE_BUNDLES = "SOURCE_BUNDLES";
  63
  64         /**
  65          * Environment variable to override the default location for the Argeo Build
  66          * configuration files. Typically used if Argeo Build has been compiled and
  67          * packaged separately.
  68          */
  69         private final static String ENV_ARGEO_BUILD_CONFIG = "ARGEO_BUILD_CONFIG";
  70
  71         /** Name of the local-specific Makefile (sdk.mk). */
  72         final static String SDK_MK = "sdk.mk";
  73         /** Name of the branch definition Makefile (branch.mk). */
  74         final static String BRANCH_MK = "branch.mk";
  75
  76         /** The execution directory (${user.dir}). */
  77         final Path execDirectory;
  78         /** Base of the source code, typically the cloned git repository. */
  79         final Path sdkSrcBase;
  80         /**
  81          * The base of the builder, typically a submodule pointing to the public
  82          * argeo-build directory.
  83          */
  84         final Path argeoBuildBase;
  85         /** The base of the build for all layers. */
  86         final Path sdkBuildBase;
  87         /** The base of the build for this layer. */
  88         final Path buildBase;
  89         /** The base of the a2 output for all layers. */
  90         final Path a2Output;
  91         /** The base of the a2 sources when packages separately. */
  92         final Path a2srcOutput;
  93
  94         /** Whether sources should be packaged separately */
  95         final boolean sourceBundles;
  96
  97         /** Constructor initialises the base directories. */
  98         public Make() throws IOException {
  99                 sourceBundles = Boolean.parseBoolean(System.getenv(ENV_SOURCE_BUNDLES));
 100                 if (sourceBundles)
 101                         logger.log(Level.INFO, "Sources will be packaged separately");
 102
 103                 execDirectory = Paths.get(System.getProperty("user.dir"));
 104                 Path sdkMkP = findSdkMk(execDirectory);
 105                 Objects.requireNonNull(sdkMkP, "No " + SDK_MK + " found under " + execDirectory);
 106
 107                 Map<String, String> context = readeMakefileVariables(sdkMkP);
 108                 sdkSrcBase = Paths.get(context.computeIfAbsent("SDK_SRC_BASE", (key) -> {
 109                         throw new IllegalStateException(key + " not found");
 110                 })).toAbsolutePath();
 111
 112                 Path argeoBuildBaseT = sdkSrcBase.resolve("sdk/argeo-build");
 113                 if (!Files.exists(argeoBuildBaseT)) {
 114                         String fromEnv = System.getenv(ENV_ARGEO_BUILD_CONFIG);
 115                         if (fromEnv != null)
 116                                 argeoBuildBaseT = Paths.get(fromEnv);
 117                         if (fromEnv == null || !Files.exists(argeoBuildBaseT)) {
 118                                 throw new IllegalStateException(
 119                                                 "Argeo Build not found. Did you initialise the git submodules or set the "
 120                                                                 + ENV_ARGEO_BUILD_CONFIG + " environment variable?");
 121                         }
 122                 }
 123                 argeoBuildBase = argeoBuildBaseT;
 124
 125                 sdkBuildBase = Paths.get(context.computeIfAbsent("SDK_BUILD_BASE", (key) -> {
 126                         throw new IllegalStateException(key + " not found");
 127                 })).toAbsolutePath();
 128                 buildBase = sdkBuildBase.resolve(sdkSrcBase.getFileName());
 129                 a2Output = sdkBuildBase.resolve("a2");
 130                 a2srcOutput = sdkBuildBase.resolve("a2.src");
 131         }
 132
 133         /*
 134          * ACTIONS
 135          */
 136         /** Compile and create the bundles in one go. */
 137         void all(Map<String, List<String>> options) throws IOException {
 138                 compile(options);
 139                 bundle(options);
 140         }
 141
 142         /** Compile all the bundles which have been passed via the --bundle argument. */
 143         void compile(Map<String, List<String>> options) throws IOException {
 144                 List<String> bundles = options.get("--bundles");
 145                 Objects.requireNonNull(bundles, "--bundles argument must be set");
 146                 if (bundles.isEmpty())
 147                         return;
 148
 149                 List<String> a2Categories = options.getOrDefault("--dep-categories", new ArrayList<>());
 150                 List<String> a2Bases = options.getOrDefault("--a2-bases", new ArrayList<>());
 151                 if (a2Bases.isEmpty() || !a2Bases.contains(a2Output.toString())) {
 152                         a2Bases.add(a2Output.toString());
 153                 }
 154
 155                 List<String> compilerArgs = new ArrayList<>();
 156
 157                 Path ecjArgs = argeoBuildBase.resolve("ecj.args");
 158                 compilerArgs.add("@" + ecjArgs);
 159
 160                 // classpath
 161                 if (!a2Categories.isEmpty()) {
 162                         // We will keep only the highest major.minor
 163                         // and order by bundle name, for predictability
 164                         Map<String, A2Jar> a2Jars = new TreeMap<>();
 165
 166 //                      StringJoiner modulePath = new StringJoiner(File.pathSeparator);
 167                         for (String a2Base : a2Bases) {
 168                                 categories: for (String a2Category : a2Categories) {
 169                                         Path a2Dir = Paths.get(a2Base).resolve(a2Category);
 170                                         if (!Files.exists(a2Dir))
 171                                                 continue categories;
 172 //                                      modulePath.add(a2Dir.toString());
 173                                         for (Path jarP : Files.newDirectoryStream(a2Dir,
 174                                                         (p) -> p.getFileName().toString().endsWith(".jar"))) {
 175                                                 A2Jar a2Jar = new A2Jar(jarP);
 176                                                 if (a2Jars.containsKey(a2Jar.name)) {
 177                                                         A2Jar current = a2Jars.get(a2Jar.name);
 178                                                         if (a2Jar.major > current.major)
 179                                                                 a2Jars.put(a2Jar.name, a2Jar);
 180                                                         else if (a2Jar.major == current.major //
 181                                                                         // if minor equals, we take the last one
 182                                                                         && a2Jar.minor >= current.minor)
 183                                                                 a2Jars.put(a2Jar.name, a2Jar);
 184                                                 } else {
 185                                                         a2Jars.put(a2Jar.name, a2Jar);
 186                                                 }
 187                                         }
 188                                 }
 189                         }
 190
 191                         StringJoiner classPath = new StringJoiner(File.pathSeparator);
 192                         for (Iterator<A2Jar> it = a2Jars.values().iterator(); it.hasNext();)
 193                                 classPath.add(it.next().path.toString());
 194
 195                         compilerArgs.add("-cp");
 196                         compilerArgs.add(classPath.toString());
 197 //                      compilerArgs.add("--module-path");
 198 //                      compilerArgs.add(modulePath.toString());
 199                 }
 200
 201                 // sources
 202                 for (String bundle : bundles) {
 203                         StringBuilder sb = new StringBuilder();
 204                         Path bundlePath = execDirectory.resolve(bundle);
 205                         if (!Files.exists(bundlePath)) {
 206                                 if (bundles.size() == 1) {
 207                                         logger.log(WARNING, "Bundle " + bundle + " not found in " + execDirectory
 208                                                         + ", assuming this is this directory, as only one bundle was requested.");
 209                                         bundlePath = execDirectory;
 210                                 } else
 211                                         throw new IllegalArgumentException("Bundle " + bundle + " not found in " + execDirectory);
 212                         }
 213                         sb.append(bundlePath.resolve("src"));
 214                         sb.append("[-d");
 215                         compilerArgs.add(sb.toString());
 216                         sb = new StringBuilder();
 217                         sb.append(buildBase.resolve(bundle).resolve("bin"));
 218                         sb.append("]");
 219                         compilerArgs.add(sb.toString());
 220                 }
 221
 222                 if (logger.isLoggable(INFO))
 223                         compilerArgs.add("-time");
 224
 225                 if (logger.isLoggable(DEBUG)) {
 226                         logger.log(DEBUG, "Compiler arguments:");
 227                         for (String arg : compilerArgs)
 228                                 logger.log(DEBUG, arg);
 229                 }
 230
 231                 boolean success = org.eclipse.jdt.core.compiler.batch.BatchCompiler.compile(
 232                                 compilerArgs.toArray(new String[compilerArgs.size()]), new PrintWriter(System.out),
 233                                 new PrintWriter(System.err), new MakeCompilationProgress());
 234                 if (!success) // kill the process if compilation failed
 235                         throw new IllegalStateException("Compilation failed");
 236         }
 237
 238         /** Package the bundles. */
 239         void bundle(Map<String, List<String>> options) throws IOException {
 240                 // check arguments
 241                 List<String> bundles = options.get("--bundles");
 242                 Objects.requireNonNull(bundles, "--bundles argument must be set");
 243                 if (bundles.isEmpty())
 244                         return;
 245
 246                 List<String> categories = options.get("--category");
 247                 Objects.requireNonNull(bundles, "--category argument must be set");
 248                 if (categories.size() != 1)
 249                         throw new IllegalArgumentException("One and only one --category must be specified");
 250                 String category = categories.get(0);
 251
 252                 final String branch;
 253                 Path branchMk = sdkSrcBase.resolve(BRANCH_MK);
 254                 if (Files.exists(branchMk)) {
 255                         Map<String, String> branchVariables = readeMakefileVariables(branchMk);
 256                         branch = branchVariables.get("BRANCH");
 257                 } else {
 258                         branch = null;
 259                 }
 260
 261                 long begin = System.currentTimeMillis();
 262                 // create jars in parallel
 263                 List<CompletableFuture<Void>> toDos = new ArrayList<>();
 264                 for (String bundle : bundles) {
 265                         toDos.add(CompletableFuture.runAsync(() -> {
 266                                 try {
 267                                         createBundle(branch, bundle, category);
 268                                 } catch (IOException e) {
 269                                         throw new RuntimeException("Packaging of " + bundle + " failed", e);
 270                                 }
 271                         }));
 272                 }
 273                 CompletableFuture.allOf(toDos.toArray(new CompletableFuture[toDos.size()])).join();
 274                 long duration = System.currentTimeMillis() - begin;
 275                 logger.log(INFO, "Packaging took " + duration + " ms");
 276         }
 277
 278         /** Package a single bundle. */
 279         void createBundle(String branch, String bundle, String category) throws IOException {
 280                 final Path source;
 281                 if (!Files.exists(execDirectory.resolve(bundle))) {
 282                         logger.log(WARNING,
 283                                         "Bundle " + bundle + " not found in " + execDirectory + ", assuming this is this directory.");
 284                         source = execDirectory;
 285                 } else {
 286                         source = execDirectory.resolve(bundle);
 287                 }
 288
 289                 Path compiled = buildBase.resolve(bundle);
 290                 String bundleSymbolicName = source.getFileName().toString();
 291
 292                 // Metadata
 293                 Properties properties = new Properties();
 294                 Path argeoBnd = argeoBuildBase.resolve("argeo.bnd");
 295                 try (InputStream in = Files.newInputStream(argeoBnd)) {
 296                         properties.load(in);
 297                 }
 298
 299                 if (branch != null) {
 300                         Path branchBnd = sdkSrcBase.resolve("sdk/branches/" + branch + ".bnd");
 301                         if (Files.exists(branchBnd))
 302                                 try (InputStream in = Files.newInputStream(branchBnd)) {
 303                                         properties.load(in);
 304                                 }
 305                 }
 306
 307                 Path bndBnd = source.resolve("bnd.bnd");
 308                 if (Files.exists(bndBnd))
 309                         try (InputStream in = Files.newInputStream(bndBnd)) {
 310                                 properties.load(in);
 311                         }
 312
 313                 // Normalise
 314                 if (!properties.containsKey("Bundle-SymbolicName"))
 315                         properties.put("Bundle-SymbolicName", bundleSymbolicName);
 316
 317                 // Calculate MANIFEST
 318                 Path binP = compiled.resolve("bin");
 319                 if (!Files.exists(binP))
 320                         Files.createDirectories(binP);
 321                 Manifest manifest;
 322                 try (Analyzer bndAnalyzer = new Analyzer()) {
 323                         bndAnalyzer.setProperties(properties);
 324                         Jar jar = new Jar(bundleSymbolicName, binP.toFile());
 325                         bndAnalyzer.setJar(jar);
 326                         manifest = bndAnalyzer.calcManifest();
 327                 } catch (Exception e) {
 328                         throw new RuntimeException("Bnd analysis of " + compiled + " failed", e);
 329                 }
 330
 331                 String major = properties.getProperty("major");
 332                 Objects.requireNonNull(major, "'major' must be set");
 333                 String minor = properties.getProperty("minor");
 334                 Objects.requireNonNull(minor, "'minor' must be set");
 335
 336                 // Write manifest
 337                 Path manifestP = compiled.resolve("META-INF/MANIFEST.MF");
 338                 Files.createDirectories(manifestP.getParent());
 339                 try (OutputStream out = Files.newOutputStream(manifestP)) {
 340                         manifest.write(out);
 341                 }
 342
 343                 // Load excludes
 344                 List<PathMatcher> excludes = new ArrayList<>();
 345                 Path excludesP = argeoBuildBase.resolve("excludes.txt");
 346                 for (String line : Files.readAllLines(excludesP)) {
 347                         PathMatcher pathMatcher = excludesP.getFileSystem().getPathMatcher("glob:" + line);
 348                         excludes.add(pathMatcher);
 349                 }
 350
 351                 Path bundleParent = Paths.get(bundle).getParent();
 352                 Path a2JarDirectory = bundleParent != null ? a2Output.resolve(bundleParent).resolve(category)
 353                                 : a2Output.resolve(category);
 354                 Path jarP = a2JarDirectory.resolve(compiled.getFileName() + "." + major + "." + minor + ".jar");
 355                 Files.createDirectories(jarP.getParent());
 356
 357                 try (JarOutputStream jarOut = new JarOutputStream(Files.newOutputStream(jarP), manifest)) {
 358                         jarOut.setLevel(Deflater.DEFAULT_COMPRESSION);
 359                         // add all classes first
 360                         Files.walkFileTree(binP, new SimpleFileVisitor<Path>() {
 361                                 @Override
 362                                 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
 363                                         jarOut.putNextEntry(new JarEntry(binP.relativize(file).toString()));
 364                                         Files.copy(file, jarOut);
 365                                         return FileVisitResult.CONTINUE;
 366                                 }
 367                         });
 368
 369                         // add resources
 370                         Files.walkFileTree(source, new SimpleFileVisitor<Path>() {
 371                                 @Override
 372                                 public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
 373                                         Path relativeP = source.relativize(dir);
 374                                         for (PathMatcher exclude : excludes)
 375                                                 if (exclude.matches(relativeP))
 376                                                         return FileVisitResult.SKIP_SUBTREE;
 377
 378                                         return FileVisitResult.CONTINUE;
 379                                 }
 380
 381                                 @Override
 382                                 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
 383                                         Path relativeP = source.relativize(file);
 384                                         for (PathMatcher exclude : excludes)
 385                                                 if (exclude.matches(relativeP))
 386                                                         return FileVisitResult.CONTINUE;
 387                                         JarEntry entry = new JarEntry(relativeP.toString());
 388                                         jarOut.putNextEntry(entry);
 389                                         Files.copy(file, jarOut);
 390                                         return FileVisitResult.CONTINUE;
 391                                 }
 392                         });
 393
 394                         Path srcP = source.resolve("src");
 395                         // Add all resources from src/
 396                         Files.walkFileTree(srcP, new SimpleFileVisitor<Path>() {
 397                                 @Override
 398                                 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
 399                                         if (file.getFileName().toString().endsWith(".java")
 400                                                         || file.getFileName().toString().endsWith(".class"))
 401                                                 return FileVisitResult.CONTINUE;
 402                                         jarOut.putNextEntry(new JarEntry(srcP.relativize(file).toString()));
 403                                         if (!Files.isDirectory(file))
 404                                                 Files.copy(file, jarOut);
 405                                         return FileVisitResult.CONTINUE;
 406                                 }
 407                         });
 408
 409                         // add sources
 410                         // TODO add effective BND, Eclipse project file, etc., in order to be able to
 411                         // repackage
 412                         if (sourceBundles) {
 413                                 Path a2srcJarDirectory = bundleParent != null ? a2srcOutput.resolve(bundleParent).resolve(category)
 414                                                 : a2srcOutput.resolve(category);
 415                                 Files.createDirectories(a2srcJarDirectory);
 416                                 Path srcJarP = a2srcJarDirectory
 417                                                 .resolve(compiled.getFileName() + "." + major + "." + minor + ".src.jar");
 418                                 Manifest srcManifest = new Manifest();
 419                                 srcManifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
 420                                 srcManifest.getMainAttributes().putValue("Bundle-SymbolicName", bundleSymbolicName + ".src");
 421                                 srcManifest.getMainAttributes().putValue("Bundle-Version",
 422                                                 manifest.getMainAttributes().getValue("Bundle-Version").toString());
 423                                 srcManifest.getMainAttributes().putValue("Eclipse-SourceBundle",
 424                                                 bundleSymbolicName + ";version=\"" + manifest.getMainAttributes().getValue("Bundle-Version"));
 425
 426                                 try (JarOutputStream srcJarOut = new JarOutputStream(Files.newOutputStream(srcJarP), srcManifest)) {
 427                                         copySourcesToJar(srcP, srcJarOut, "");
 428                                 }
 429                         } else {
 430                                 copySourcesToJar(srcP, jarOut, "OSGI-OPT/src/");
 431                         }
 432                 }
 433         }
 434
 435         /*
 436          * UTILITIES
 437          */
 438         /** Add sources to a jar file */
 439         void copySourcesToJar(Path srcP, JarOutputStream srcJarOut, String prefix) throws IOException {
 440                 Files.walkFileTree(srcP, new SimpleFileVisitor<Path>() {
 441                         @Override
 442                         public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
 443                                 srcJarOut.putNextEntry(new JarEntry(prefix + srcP.relativize(file).toString()));
 444                                 if (!Files.isDirectory(file))
 445                                         Files.copy(file, srcJarOut);
 446                                 return FileVisitResult.CONTINUE;
 447                         }
 448                 });
 449         }
 450
 451         /**
 452          * Recursively find the base source directory (which contains the
 453          * <code>{@value #SDK_MK}</code> file).
 454          */
 455         Path findSdkMk(Path directory) {
 456                 Path sdkMkP = directory.resolve(SDK_MK);
 457                 if (Files.exists(sdkMkP)) {
 458                         return sdkMkP.toAbsolutePath();
 459                 }
 460                 if (directory.getParent() == null)
 461                         return null;
 462                 return findSdkMk(directory.getParent());
 463         }
 464
 465         /**
 466          * Reads Makefile variable assignments of the form =, :=, or ?=, ignoring white
 467          * spaces. To be used with very simple included Makefiles only.
 468          */
 469         Map<String, String> readeMakefileVariables(Path path) throws IOException {
 470                 Map<String, String> context = new HashMap<>();
 471                 List<String> sdkMkLines = Files.readAllLines(path);
 472                 lines: for (String line : sdkMkLines) {
 473                         StringTokenizer st = new StringTokenizer(line, " :=?");
 474                         if (!st.hasMoreTokens())
 475                                 continue lines;
 476                         String key = st.nextToken();
 477                         if (!st.hasMoreTokens())
 478                                 continue lines;
 479                         String value = st.nextToken();
 480                         if (st.hasMoreTokens()) // probably not a simple variable assignment
 481                                 continue lines;
 482                         context.put(key, value);
 483                 }
 484                 return context;
 485         }
 486
 487         /** Main entry point, interpreting actions and arguments. */
 488         public static void main(String... args) {
 489                 if (args.length == 0)
 490                         throw new IllegalArgumentException("At least an action must be provided");
 491                 int actionIndex = 0;
 492                 String action = args[actionIndex];
 493                 if (args.length > actionIndex + 1 && !args[actionIndex + 1].startsWith("-"))
 494                         throw new IllegalArgumentException(
 495                                         "Action " + action + " must be followed by an option: " + Arrays.asList(args));
 496
 497                 Map<String, List<String>> options = new HashMap<>();
 498                 String currentOption = null;
 499                 for (int i = actionIndex + 1; i < args.length; i++) {
 500                         if (args[i].startsWith("-")) {
 501                                 currentOption = args[i];
 502                                 if (!options.containsKey(currentOption))
 503                                         options.put(currentOption, new ArrayList<>());
 504
 505                         } else {
 506                                 options.get(currentOption).add(args[i]);
 507                         }
 508                 }
 509
 510                 try {
 511                         Make argeoMake = new Make();
 512                         switch (action) {
 513                         case "compile" -> argeoMake.compile(options);
 514                         case "bundle" -> argeoMake.bundle(options);
 515                         case "all" -> argeoMake.all(options);
 516
 517                         default -> throw new IllegalArgumentException("Unkown action: " + action);
 518                         }
 519
 520                         long jvmUptime = ManagementFactory.getRuntimeMXBean().getUptime();
 521                         logger.log(INFO, "Make.java action '" + action + "' succesfully completed after " + (jvmUptime / 1000) + "."
 522                                         + (jvmUptime % 1000) + " s");
 523                 } catch (Exception e) {
 524                         long jvmUptime = ManagementFactory.getRuntimeMXBean().getUptime();
 525                         logger.log(ERROR, "Make.java action '" + action + "' failed after " + (jvmUptime / 1000) + "."
 526                                         + (jvmUptime % 1000) + " s", e);
 527                         System.exit(1);
 528                 }
 529         }
 530
 531         static class A2Jar {
 532                 final Path path;
 533                 final String name;
 534                 final int major;
 535                 final int minor;
 536
 537                 A2Jar(Path path) {
 538                         this.path = path;
 539                         String fileName = path.getFileName().toString();
 540                         fileName = fileName.substring(0, fileName.lastIndexOf('.'));
 541                         minor = Integer.parseInt(fileName.substring(fileName.lastIndexOf('.') + 1));
 542                         fileName = fileName.substring(0, fileName.lastIndexOf('.'));
 543                         major = Integer.parseInt(fileName.substring(fileName.lastIndexOf('.') + 1));
 544                         name = fileName.substring(0, fileName.lastIndexOf('.'));
 545                 }
 546         }
 547
 548         /**
 549          * An ECJ {@link CompilationProgress} printing a progress bar while compiling.
 550          */
 551         static class MakeCompilationProgress extends CompilationProgress {
 552                 private int totalWork;
 553                 private long currentChunk = 0;
 554                 private long chunksCount = 80;
 555
 556                 @Override
 557                 public void worked(int workIncrement, int remainingWork) {
 558                         if (!logger.isLoggable(Level.INFO)) // progress bar only at INFO level
 559                                 return;
 560                         long chunk = ((totalWork - remainingWork) * chunksCount) / totalWork;
 561                         if (chunk != currentChunk) {
 562                                 currentChunk = chunk;
 563                                 for (long i = 0; i < currentChunk; i++) {
 564                                         System.out.print("#");
 565                                 }
 566                                 for (long i = currentChunk; i < chunksCount; i++) {
 567                                         System.out.print("-");
 568                                 }
 569                                 System.out.print("\r");
 570                         }
 571                         if (remainingWork == 0)
 572                                 System.out.print("\n");
 573                 }
 574
 575                 @Override
 576                 public void setTaskName(String name) {
 577                 }
 578
 579                 @Override
 580                 public boolean isCanceled() {
 581                         return false;
 582                 }
 583
 584                 @Override
 585                 public void done() {
 586                 }
 587
 588                 @Override
 589                 public void begin(int remainingWork) {
 590                         this.totalWork = remainingWork;
 591                 }
 592         }
 593 }