Package aQute.bnd.build

Source Code of aQute.bnd.build.Project

package aQute.bnd.build;

import java.io.*;
import java.lang.reflect.*;
import java.net.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.concurrent.*;
import java.util.concurrent.locks.*;
import java.util.jar.*;

import aQute.bnd.help.*;
import aQute.bnd.maven.support.*;
import aQute.bnd.service.*;
import aQute.bnd.service.RepositoryPlugin.Strategy;
import aQute.bnd.service.action.*;
import aQute.lib.io.*;
import aQute.lib.osgi.*;
import aQute.lib.osgi.eclipse.*;
import aQute.libg.generics.*;
import aQute.libg.header.*;
import aQute.libg.sed.*;
import aQute.libg.version.*;

/**
* This class is NOT threadsafe
*
* @author aqute
*
*/

public class Project extends Processor {

  final static String      DEFAULT_ACTIONS      = "build; label='Build', test; label='Test', run; label='Run', clean; label='Clean', release; label='Release', refreshAll; label=Refresh, deploy;label=Deploy";
  public final static String  BNDFILE          = "bnd.bnd";
  public final static String  BNDCNF          = "cnf";
  final Workspace        workspace;
  boolean            preparedPaths;
  final Collection<Project>  dependson        = new LinkedHashSet<Project>();
  final Collection<Container>  buildpath        = new LinkedHashSet<Container>();
  final Collection<Container>  testpath        = new LinkedHashSet<Container>();
  final Collection<Container>  runpath          = new LinkedHashSet<Container>();
  final Collection<Container>  runbundles        = new LinkedHashSet<Container>();
  File            runstorage;
  final Collection<File>    sourcepath        = new LinkedHashSet<File>();
  final Collection<File>    allsourcepath      = new LinkedHashSet<File>();
  final Collection<Container>  bootclasspath      = new LinkedHashSet<Container>();
  final Lock          lock          = new ReentrantLock(true);
  volatile String        lockingReason;
  volatile Thread        lockingThread;
  File            output;
  File            target;
  boolean            inPrepare;
  int              revision;
  File            files[];
  private long        buildtime;
  static List<Project>    trail          = new ArrayList<Project>();
  boolean            delayRunDependencies  = false;

  public Project(Workspace workspace, File projectDir, File buildFile) throws Exception {
    super(workspace);
    this.workspace = workspace;
    setFileMustExist(false);
    setProperties(buildFile);
    assert workspace != null;
    // For backward compatibility reasons, we also read
    readBuildProperties();
  }

  public Project(Workspace workspace, File buildDir) throws Exception {
    this(workspace, buildDir, new File(buildDir, BNDFILE));
  }

  private void readBuildProperties() throws Exception {
    try {
      File f = getFile("build.properties");
      if (f.isFile()) {
        Properties p = loadProperties(f);
        for (Enumeration<?> e = p.propertyNames(); e.hasMoreElements();) {
          String key = (String) e.nextElement();
          String newkey = key;
          if (key.indexOf('$') >= 0) {
            newkey = getReplacer().process(key);
          }
          setProperty(newkey, p.getProperty(key));
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public static Project getUnparented(File propertiesFile) throws Exception {
    propertiesFile = propertiesFile.getAbsoluteFile();
    Workspace workspace = new Workspace(propertiesFile.getParentFile());
    Project project = new Project(workspace, propertiesFile.getParentFile());
    project.setProperties(propertiesFile);
    project.setFileMustExist(true);
    return project;
  }

  public synchronized boolean isValid() {
    return getBase().isDirectory() && getPropertiesFile().isFile();
  }

  /**
   * Return a new builder that is nicely setup for this project. Please close
   * this builder after use.
   *
   * @param parent
   *            The project builder to use as parent, use this project if null
   * @return
   * @throws Exception
   */
  public synchronized ProjectBuilder getBuilder(ProjectBuilder parent) throws Exception {

    ProjectBuilder builder;

    if (parent == null)
      builder = new ProjectBuilder(this);
    else
      builder = new ProjectBuilder(parent);

    builder.setBase(getBase());

    return builder;
  }

  public synchronized int getChanged() {
    return revision;
  }

  /*
   * Indicate a change in the external world that affects our build. This will
   * clear any cached results.
   */
  public synchronized void setChanged() {
    // if (refresh()) {
    preparedPaths = false;
    files = null;
    revision++;
    // }
  }

  public Workspace getWorkspace() {
    return workspace;
  }

  public String toString() {
    return getBase().getName();
  }

  /**
   * Set up all the paths
   */

  public synchronized void prepare() throws Exception {
    if (!isValid()) {
      warning("Invalid project attempts to prepare: %s", this);
      return;
    }

    if (inPrepare)
      throw new CircularDependencyException(trail.toString() + "," + this);

    trail.add(this);
    try {
      if (!preparedPaths) {
        inPrepare = true;
        try {
          dependson.clear();
          buildpath.clear();
          sourcepath.clear();
          allsourcepath.clear();
          bootclasspath.clear();
          testpath.clear();
          runpath.clear();
          runbundles.clear();

          // We use a builder to construct all the properties for
          // use.
          setProperty("basedir", getBase().getAbsolutePath());

          // If a bnd.bnd file exists, we read it.
          // Otherwise, we just do the build properties.
          if (!getPropertiesFile().isFile() && new File(getBase(), ".classpath").isFile()) {
            // Get our Eclipse info, we might depend on other
            // projects
            // though ideally this should become empty and void
            doEclipseClasspath();
          }

          // Calculate our source directory

          File src = getSrc();
          if (src.isDirectory()) {
            sourcepath.add(src);
            allsourcepath.add(src);
          } else
            sourcepath.add(getBase());

          // Set default bin directory
          output = getFile(getProperty("bin", "bin")).getAbsoluteFile();
          if (!output.exists()) {
            output.mkdirs();
            getWorkspace().changedFile(output);
          }
          if (!output.isDirectory())
            error("Can not find output directory: " + output);
          else if (!buildpath.contains(output))
            buildpath.add(new Container(this, output));

          // Where we store all our generated stuff.
          target = getFile(getProperty("target", "generated"));
          if (!target.exists()) {
            target.mkdirs();
            getWorkspace().changedFile(target);
          }

          // Where the launched OSGi framework stores stuff
          String runStorageStr = getProperty(Constants.RUNSTORAGE);
          runstorage = runStorageStr != null ? getFile(runStorageStr) : null;

          // We might have some other projects we want build
          // before we do anything, but these projects are not in
          // our path. The -dependson allows you to build them before.

          List<Project> dependencies = new ArrayList<Project>();
          // dependencies.add( getWorkspace().getProject("cnf"));

          String dp = getProperty(Constants.DEPENDSON);
          Set<String> requiredProjectNames = parseHeader(dp).keySet();
          List<DependencyContributor> dcs = getPlugins(DependencyContributor.class);
          for (DependencyContributor dc : dcs)
            dc.addDependencies(this, requiredProjectNames);

          for (String p : requiredProjectNames) {
            Project required = getWorkspace().getProject(p);
            if (required == null)
              error("No such project " + required + " on " + Constants.DEPENDSON);
            else {
              dependencies.add(required);
            }

          }

          // We have two paths that consists of repo files, projects,
          // or some other stuff. The doPath routine adds them to the
          // path and extracts the projects so we can build them
          // before.

          doPath(buildpath, dependencies, parseBuildpath(), bootclasspath);
          doPath(testpath, dependencies, parseTestpath(), bootclasspath);
          if (!delayRunDependencies) {
            doPath(runpath, dependencies, parseRunpath(), null);
            doPath(runbundles, dependencies, parseRunbundles(), null);
          }

          // We now know all dependent projects. But we also depend
          // on whatever those projects depend on. This creates an
          // ordered list without any duplicates. This of course
          // assumes
          // that there is no circularity. However, this is checked
          // by the inPrepare flag, will throw an exception if we
          // are circular.

          Set<Project> done = new HashSet<Project>();
          done.add(this);
          allsourcepath.addAll(sourcepath);

          for (Project project : dependencies)
            project.traverse(dependson, done);

          for (Project project : dependson) {
            allsourcepath.addAll(project.getSourcePath());
          }
          if (isOk())
            preparedPaths = true;
        } finally {
          inPrepare = false;
        }
      }
    } finally {
      trail.remove(this);
    }
  }

  public File getSrc() {
    return new File(getBase(), getProperty("src", "src"));
  }

  private void traverse(Collection<Project> dependencies, Set<Project> visited) throws Exception {
    if (visited.contains(this))
      return;

    visited.add(this);

    for (Project project : getDependson())
      project.traverse(dependencies, visited);

    dependencies.add(this);
  }

  /**
   * Iterate over the entries and place the projects on the projects list and
   * all the files of the entries on the resultpath.
   *
   * @param resultpath
   *            The list that gets all the files
   * @param projects
   *            The list that gets any projects that are entries
   * @param entries
   *            The input list of classpath entries
   */
  private void doPath(Collection<Container> resultpath, Collection<Project> projects,
      Collection<Container> entries, Collection<Container> bootclasspath) {
    for (Container cpe : entries) {
      if (cpe.getError() != null)
        error(cpe.getError());
      else {
        if (cpe.getType() == Container.TYPE.PROJECT) {
          projects.add(cpe.getProject());
        }
        if (bootclasspath != null && cpe.getBundleSymbolicName().startsWith("ee.")
            || cpe.getAttributes().containsKey("boot"))
          bootclasspath.add(cpe);
        else
          resultpath.add(cpe);
      }
    }
  }

  /**
   * Parse the list of bundles that are a prerequisite to this project.
   *
   * Bundles are listed in repo specific names. So we just let our repo
   * plugins iterate over the list of bundles and we get the highest version
   * from them.
   *
   * @return
   */

  private List<Container> parseBuildpath() throws Exception {
    List<Container> bundles = getBundles(Strategy.LOWEST, getProperty(Constants.BUILDPATH),
        Constants.BUILDPATH);
    appendPackages(Strategy.LOWEST, getProperty(Constants.BUILDPACKAGES), bundles,
        ResolverMode.build);
    return bundles;
  }

  private List<Container> parseRunpath() throws Exception {
    return getBundles(Strategy.HIGHEST, getProperty(Constants.RUNPATH), Constants.RUNPATH);
  }

  private List<Container> parseRunbundles() throws Exception {
    return getBundles(Strategy.HIGHEST, getProperty(Constants.RUNBUNDLES), Constants.RUNBUNDLES);
  }

  private List<Container> parseTestpath() throws Exception {
    return getBundles(Strategy.HIGHEST, getProperty(Constants.TESTPATH), Constants.TESTPATH);
  }

  /**
   * Analyze the header and return a list of files that should be on the
   * build, test or some other path. The list is assumed to be a list of bsns
   * with a version specification. The special case of version=project
   * indicates there is a project in the same workspace. The path to the
   * output directory is calculated. The default directory ${bin} can be
   * overridden with the output attribute.
   *
   * @param strategy
   *            STRATEGY_LOWEST or STRATEGY_HIGHEST
   * @param spec
   *            The header
   * @return
   */

  public List<Container> getBundles(Strategy strategyx, String spec, String source)
      throws Exception {
    List<Container> result = new ArrayList<Container>();
    Map<String, Map<String, String>> bundles = parseHeader(spec);

    try {
      for (Iterator<Map.Entry<String, Map<String, String>>> i = bundles.entrySet().iterator(); i
          .hasNext();) {
        Map.Entry<String, Map<String, String>> entry = i.next();
        String bsn = entry.getKey();
        Map<String, String> attrs = entry.getValue();

        Container found = null;

        // Check if we have to use the maven pom ...
        if (bsn.equals("pom")) {
          doMavenPom(strategyx, result, attrs.get("scope"));
          continue;
        }

        String versionRange = attrs.get("version");

        if (versionRange != null) {
          if (versionRange.equals("latest") || versionRange.equals("snapshot")) {
            found = getBundle(bsn, versionRange, strategyx, attrs);
          }
        }
        if (found == null) {
          if (versionRange != null
              && (versionRange.equals("project") || versionRange.equals("latest"))) {
            Project project = getWorkspace().getProject(bsn);
            if (project != null && project.exists()) {
              File f = project.getOutput();
              found = new Container(project, bsn, versionRange,
                  Container.TYPE.PROJECT, f, null, attrs);
            } else {
              error("Reference to project that does not exist in workspace\n"
                  + "  Project       %s\n" + "  Specification %s", bsn, spec);
              continue;
            }
          } else if (versionRange != null && versionRange.equals("file")) {
            File f = getFile(bsn);
            String error = null;
            if (!f.exists())
              error = "File does not exist: " + f.getAbsolutePath();
            if (f.getName().endsWith(".lib")) {
              found = new Container(this, bsn, "file", Container.TYPE.LIBRARY, f,
                  error, attrs);
            } else {
              found = new Container(this, bsn, "file", Container.TYPE.EXTERNAL, f,
                  error, attrs);
            }
          } else {
            found = getBundle(bsn, versionRange, strategyx, attrs);
          }
        }

        if (found != null) {
          List<Container> libs = found.getMembers();
          for (Container cc : libs) {
            if (result.contains(cc))
              warning("Multiple bundles with the same final URL: " + cc);

            result.add(cc);
          }
        } else {
          // Oops, not a bundle in sight :-(
          Container x = new Container(this, bsn, versionRange, Container.TYPE.ERROR,
              null, bsn + ";version=" + versionRange + " not found", attrs);
          result.add(x);
          warning("Can not find URL for bsn " + bsn);
        }
      }
    } catch (CircularDependencyException e) {
      String message = e.getMessage();
      if (source != null)
        message = String.format("%s (from property: %s)", message, source);
      error("Circular dependency detected from project %s: %s", e, getName(), message);
    } catch (Exception e) {
      error("Unexpected error while trying to get the bundles from " + spec, e);
      e.printStackTrace();
    }
    return result;
  }

  /**
   * Just calls a new method with a default parm.
   *
   * @throws Exception
   *
   */
  Collection<Container> getBundles(Strategy strategy, String spec) throws Exception {
    return getBundles(strategy, spec, null);
  }

  /**
   * Calculates the containers required to fulfil the {@code -buildpackages}
   * instruction, and appends them to the existing list of containers.
   *
   * @param strategyx
   *            The package-version disambiguation strategy.
   * @param spec
   *            The value of the @{code -buildpackages} instruction.
   * @throws Exception
   */
  public void appendPackages(Strategy strategyx, String spec, List<Container> resolvedBundles,
      ResolverMode mode) throws Exception {
    Map<File, Container> pkgResolvedBundles = new HashMap<File, Container>();

    List<Entry<String, Map<String, String>>> queue = new LinkedList<Map.Entry<String, Map<String, String>>>();
    queue.addAll(parseHeader(spec).entrySet());

    while (!queue.isEmpty()) {
      Entry<String, Map<String, String>> entry = queue.remove(0);

      String pkgName = entry.getKey();
      Map<String, String> attrs = entry.getValue();

      Container found = null;

      String versionRange = attrs.get(Constants.VERSION_ATTRIBUTE);
      if ("latest".equals(versionRange) || "snapshot".equals(versionRange))
        found = getPackage(pkgName, versionRange, strategyx, attrs, mode);

      if (found == null)
        found = getPackage(pkgName, versionRange, strategyx, attrs, mode);

      if (found != null) {
        if (resolvedBundles.contains(found)) {
          // Don't add his bundle because it was already included
          // using -buildpath
        } else {
          List<Container> libs = found.getMembers();
          for (Container cc : libs) {
            Container existing = pkgResolvedBundles.get(cc.file);
            if (existing != null)
              addToPackageList(existing, attrs.get("packages"));
            else {
              addToPackageList(cc, attrs.get("packages"));
              pkgResolvedBundles.put(cc.file, cc);
            }

            String importUses = cc.getAttributes().get("import-uses");
            if (importUses != null)
              queue.addAll(0, parseHeader(importUses).entrySet());
          }
        }
      } else {
        // Unable to resolve
        Container x = new Container(this, "X", versionRange, Container.TYPE.ERROR, null,
            "package " + pkgName + ";version=" + versionRange + " not found", attrs);
        resolvedBundles.add(x);
        warning("Can not find URL for package " + pkgName);
      }
    }

    for (Container container : pkgResolvedBundles.values()) {
      resolvedBundles.add(container);
    }
  }

  static void mergeNames(String names, Set<String> set) {
    StringTokenizer tokenizer = new StringTokenizer(names, ",");
    while (tokenizer.hasMoreTokens())
      set.add(tokenizer.nextToken().trim());
  }

  static String flatten(Set<String> names) {
    StringBuilder builder = new StringBuilder();
    boolean first = true;
    for (String name : names) {
      if (!first)
        builder.append(',');
      builder.append(name);
      first = false;
    }
    return builder.toString();
  }

  static void addToPackageList(Container container, String newPackageNames) {
    Set<String> merged = new HashSet<String>();

    String packageListStr = container.attributes.get("packages");
    if (packageListStr != null)
      mergeNames(packageListStr, merged);
    if (newPackageNames != null)
      mergeNames(newPackageNames, merged);

    container.putAttribute("packages", flatten(merged));
  }

  /**
   * Find a container to fulfil a package requirement
   *
   * @param packageName
   *            The package required
   * @param range
   *            The package version range required
   * @param strategyx
   *            The package-version disambiguation strategy
   * @param attrs
   *            Other attributes specified by the search.
   * @return
   * @throws Exception
   */
  public Container getPackage(String packageName, String range, Strategy strategyx,
      Map<String, String> attrs, ResolverMode mode) throws Exception {
    if ("snapshot".equals(range))
      return new Container(this, "", range, Container.TYPE.ERROR, null,
          "snapshot not supported for package lookups", null);

    if (attrs == null)
      attrs = new HashMap<String, String>(2);
    attrs.put("package", packageName);
    attrs.put("mode", mode.name());

    Strategy useStrategy = findStrategy(attrs, strategyx, range);

    List<RepositoryPlugin> plugins = getPlugins(RepositoryPlugin.class);
    for (RepositoryPlugin plugin : plugins) {
      try {
        File result = plugin.get(null, range, useStrategy, attrs);
        if (result != null) {
          if (result.getName().endsWith("lib"))
            return new Container(this, result.getName(), range, Container.TYPE.LIBRARY,
                result, null, attrs);
          else
            return new Container(this, result.getName(), range, Container.TYPE.REPO,
                result, null, attrs);
        }
      } catch (Exception e) {
        // Ignore... lots of repos will fail here
      }
    }

    return new Container(this, "X", range, Container.TYPE.ERROR, null, "package " + packageName
        + ";version=" + range + " Not found in " + plugins, null);
  }

  private Strategy findStrategy(Map<String, String> attrs, Strategy defaultStrategy,
      String versionRange) {
    Strategy useStrategy = defaultStrategy;
    String overrideStrategy = attrs.get("strategy");
    if (overrideStrategy != null) {
      if ("highest".equalsIgnoreCase(overrideStrategy))
        useStrategy = Strategy.HIGHEST;
      else if ("lowest".equalsIgnoreCase(overrideStrategy))
        useStrategy = Strategy.LOWEST;
      else if ("exact".equalsIgnoreCase(overrideStrategy))
        useStrategy = Strategy.EXACT;
    }
    if ("latest".equals(versionRange))
      useStrategy = Strategy.HIGHEST;
    return useStrategy;
  }

  /**
   * The user selected pom in a path. This will place the pom as well as its
   * dependencies on the list
   *
   * @param strategyx
   *            the strategy to use.
   * @param result
   *            The list of result containers
   * @param attrs
   *            The attributes
   * @throws Exception
   *             anything goes wrong
   */
  public void doMavenPom(Strategy strategyx, List<Container> result, String action)
      throws Exception {
    File pomFile = getFile("pom.xml");
    if (!pomFile.isFile())
      error("Specified to use pom.xml but the project directory does not contain a pom.xml file");
    else {
      ProjectPom pom = getWorkspace().getMaven().createProjectModel(pomFile);
      if (action == null)
        action = "compile";
      Pom.Scope act = Pom.Scope.valueOf(action);
      Set<Pom> dependencies = pom.getDependencies(act);
      for (Pom sub : dependencies) {
        File artifact = sub.getArtifact();
        Container container = new Container(artifact);
        result.add(container);
      }
    }
  }

  public Collection<Project> getDependson() throws Exception {
    prepare();
    return dependson;
  }

  public Collection<Container> getBuildpath() throws Exception {
    prepare();
    return buildpath;
  }

  public Collection<Container> getTestpath() throws Exception {
    prepare();
    return testpath;
  }

  /**
   * Handle dependencies for paths that are calculated on demand.
   *
   * @param testpath2
   * @param parseTestpath
   */
  private void justInTime(Collection<Container> path, List<Container> entries) {
    if (delayRunDependencies && path.isEmpty())
      doPath(path, dependson, entries, null);
  }

  public Collection<Container> getRunpath() throws Exception {
    prepare();
    justInTime(runpath, parseRunpath());
    return runpath;
  }

  public Collection<Container> getRunbundles() throws Exception {
    prepare();
    justInTime(runbundles, parseRunbundles());
    return runbundles;
  }

  public File getRunStorage() throws Exception {
    prepare();
    return runstorage;
  }

  public boolean getRunBuilds() {
    boolean result;
    String runBuildsStr = getProperty(Constants.RUNBUILDS);
    if (runBuildsStr == null)
      result = !getPropertiesFile().getName().toLowerCase()
          .endsWith(Constants.DEFAULT_BNDRUN_EXTENSION);
    else
      result = Boolean.parseBoolean(runBuildsStr);
    return result;
  }

  public Collection<File> getSourcePath() throws Exception {
    prepare();
    return sourcepath;
  }

  public Collection<File> getAllsourcepath() throws Exception {
    prepare();
    return allsourcepath;
  }

  public Collection<Container> getBootclasspath() throws Exception {
    prepare();
    return bootclasspath;
  }

  public File getOutput() throws Exception {
    prepare();
    return output;
  }

  private void doEclipseClasspath() throws Exception {
    EclipseClasspath eclipse = new EclipseClasspath(this, getWorkspace().getBase(), getBase());
    eclipse.setRecurse(false);

    // We get the file directories but in this case we need
    // to tell ant that the project names
    for (File dependent : eclipse.getDependents()) {
      Project required = workspace.getProject(dependent.getName());
      dependson.add(required);
    }
    for (File f : eclipse.getClasspath()) {
      buildpath.add(new Container(f));
    }
    for (File f : eclipse.getBootclasspath()) {
      bootclasspath.add(new Container(f));
    }
    sourcepath.addAll(eclipse.getSourcepath());
    allsourcepath.addAll(eclipse.getAllSources());
    output = eclipse.getOutput();
  }

  public String _p_dependson(String args[]) throws Exception {
    return list(args, toFiles(getDependson()));
  }

  private Collection<?> toFiles(Collection<Project> projects) {
    List<File> files = new ArrayList<File>();
    for (Project p : projects) {
      files.add(p.getBase());
    }
    return files;
  }

  public String _p_buildpath(String args[]) throws Exception {
    return list(args, getBuildpath());
  }

  public String _p_testpath(String args[]) throws Exception {
    return list(args, getRunpath());
  }

  public String _p_sourcepath(String args[]) throws Exception {
    return list(args, getSourcePath());
  }

  public String _p_allsourcepath(String args[]) throws Exception {
    return list(args, getAllsourcepath());
  }

  public String _p_bootclasspath(String args[]) throws Exception {
    return list(args, getBootclasspath());
  }

  public String _p_output(String args[]) throws Exception {
    if (args.length != 1)
      throw new IllegalArgumentException("${output} should not have arguments");
    return getOutput().getAbsolutePath();
  }

  private String list(String[] args, Collection<?> list) {
    if (args.length > 3)
      throw new IllegalArgumentException("${" + args[0]
          + "[;<separator>]} can only take a separator as argument, has "
          + Arrays.toString(args));

    String separator = ",";

    if (args.length == 2) {
      separator = args[1];
    }

    return join(list, separator);
  }

  protected Object[] getMacroDomains() {
    return new Object[] { workspace };
  }

  public File release(Jar jar) throws Exception {
    String name = getProperty(Constants.RELEASEREPO);
    return release(name, jar);
  }

  /**
   * Release
   *
   * @param name
   *            The repository name
   * @param jar
   * @return
   * @throws Exception
   */
  public File release(String name, Jar jar) throws Exception {
    trace("release %s", name);
    List<RepositoryPlugin> plugins = getPlugins(RepositoryPlugin.class);
    RepositoryPlugin rp = null;
    for (RepositoryPlugin plugin : plugins) {
      if (!plugin.canWrite()) {
        continue;
      }
      if (name == null) {
        rp = plugin;
        break;
      } else if (name.equals(plugin.getName())) {
        rp = plugin;
        break;
      }
    }

    if (rp != null) {
      try {
        File file = rp.put(jar);
        trace("Released %s to file %s in repository %s", jar.getName(), file, rp);
      } catch (Exception e) {
        error("Deploying " + jar.getName() + " on " + rp.getName(), e);
      } finally {
        jar.close();
      }
    } else if (name == null)
      error("There is no writable repository (no repo name specified)");
    else
      error("Cannot find a writeable repository with the name %s from the repositiories %s",
          name, plugins);

    return null;

  }

  public void release(boolean test) throws Exception {
    String name = getProperty(Constants.RELEASEREPO);
    release(name, test);
  }

  /**
   * Release
   *
   * @param name
   *            The respository name
   * @param test
   *            Run testcases
   * @throws Exception
   */
  public void release(String name, boolean test) throws Exception {
    trace("release");
    File[] jars = build(test);
    // If build fails jars will be null
    if (jars == null) {
      trace("no jars being build");
      return;
    }
    trace("build ", Arrays.toString(jars));
    for (File jar : jars) {
      Jar j = new Jar(jar);
      try {
        release(name, j);
      } finally {
        j.close();
      }
    }

  }

  /**
   * Get a bundle from one of the plugin repositories. If an exact version is
   * required we just return the first repository found (in declaration order
   * in the build.bnd file).
   *
   * @param bsn
   *            The bundle symbolic name
   * @param range
   *            The version range
   * @param lowest
   *            set to LOWEST or HIGHEST
   * @return the file object that points to the bundle or null if not found
   * @throws Exception
   *             when something goes wrong
   */

  public Container getBundle(String bsn, String range, Strategy strategy,
      Map<String, String> attrs) throws Exception {

    if (range == null)
      range = "0";

    if ("snapshot".equals(range)) {
      return getBundleFromProject(bsn, attrs);
    }

    Strategy useStrategy = strategy;

    if ("latest".equals(range)) {
      Container c = getBundleFromProject(bsn, attrs);
      if (c != null)
        return c;

      useStrategy = Strategy.HIGHEST;
    }

    useStrategy = overrideStrategy(attrs, useStrategy);

    List<RepositoryPlugin> plugins = getPlugins(RepositoryPlugin.class);

    if (useStrategy == Strategy.EXACT) {

      // For an exact range we just iterate over the repos
      // and return the first we find.

      for (RepositoryPlugin plugin : plugins) {
        File result = plugin.get(bsn, range, Strategy.EXACT, attrs);
        if (result != null)
          return toContainer(bsn, range, attrs, result);
      }
    } else {
      VersionRange versionRange = "latest".equals(range) ? new VersionRange("0")
          : new VersionRange(range);

      // We have a range search. Gather all the versions in all the repos
      // and make a decision on that choice. If the same version is found
      // in
      // multiple repos we take the first

      SortedMap<Version, RepositoryPlugin> versions = new TreeMap<Version, RepositoryPlugin>();
      for (RepositoryPlugin plugin : plugins) {
        try {
          List<Version> vs = plugin.versions(bsn);
          if (vs != null) {
            for (Version v : vs) {
              if (!versions.containsKey(v) && versionRange.includes(v))
                versions.put(v, plugin);
            }
          }
        } catch (UnsupportedOperationException ose) {
          // We have a plugin that cannot list versions, try
          // if it has this specific version
          // The main reaosn for this code was the Maven Remote
          // Repository
          // To query, we must have a real version
          if (!versions.isEmpty() && Verifier.isVersion(range)) {
            File file = plugin.get(bsn, range, useStrategy, attrs);
            // and the entry must exist
            // if it does, return this as a result
            if (file != null)
              return toContainer(bsn, range, attrs, file);
          }
        }
      }

      // Verify if we found any, if so, we use the strategy to pick
      // the first or last

      if (!versions.isEmpty()) {
        Version provider = null;

        switch (useStrategy) {
        case HIGHEST:
          provider = versions.lastKey();
          break;

        case LOWEST:
          provider = versions.firstKey();
          break;
        }
        if (provider != null) {
          RepositoryPlugin repo = versions.get(provider);
          String version = provider.toString();
          File result = repo.get(bsn, version, Strategy.EXACT, attrs);
          if (result != null)
            return toContainer(bsn, version, attrs, result);
        } else
          error("Unexpected, found versions %s but then not provider for startegy %s?",
              versions, useStrategy);
      }
    }

    //
    // If we get this far we ran into an error somewhere

    return new Container(this, bsn, range, Container.TYPE.ERROR, null, bsn + ";version="
        + range + " Not found in " + plugins, null);

  }

  /**
   * @param attrs
   * @param useStrategy
   * @return
   */
  protected Strategy overrideStrategy(Map<String, String> attrs, Strategy useStrategy) {
    if (attrs != null) {
      String overrideStrategy = attrs.get("strategy");

      if (overrideStrategy != null) {
        if ("highest".equalsIgnoreCase(overrideStrategy))
          useStrategy = Strategy.HIGHEST;
        else if ("lowest".equalsIgnoreCase(overrideStrategy))
          useStrategy = Strategy.LOWEST;
        else if ("exact".equalsIgnoreCase(overrideStrategy))
          useStrategy = Strategy.EXACT;
      }
    }
    return useStrategy;
  }

  /**
   * @param bsn
   * @param range
   * @param attrs
   * @param result
   * @return
   */
  protected Container toContainer(String bsn, String range, Map<String, String> attrs, File result) {
    if (result == null) {
      System.out.println("Huh?");
    }
    if (result.getName().endsWith("lib"))
      return new Container(this, bsn, range, Container.TYPE.LIBRARY, result, null, attrs);
    else
      return new Container(this, bsn, range, Container.TYPE.REPO, result, null, attrs);
  }

  /**
   * Look for the bundle in the workspace. The premise is that the bsn must
   * start with the project name.
   *
   * @param bsn
   *            The bsn
   * @param attrs
   *            Any attributes
   * @return
   * @throws Exception
   */
  private Container getBundleFromProject(String bsn, Map<String, String> attrs) throws Exception {
    String pname = bsn;
    while (true) {
      Project p = getWorkspace().getProject(pname);
      if (p != null && p.isValid()) {
        Container c = p.getDeliverable(bsn, attrs);
        return c;
      }

      int n = pname.lastIndexOf('.');
      if (n <= 0)
        return null;
      pname = pname.substring(0, n);
    }
  }

  /**
   * Deploy the file (which must be a bundle) into the repository.
   *
   * @param name
   *            The repository name
   * @param file
   *            bundle
   */
  public void deploy(String name, File file) throws Exception {
    List<RepositoryPlugin> plugins = getPlugins(RepositoryPlugin.class);
    ;
    RepositoryPlugin rp = null;
    for (RepositoryPlugin plugin : plugins) {
      if (!plugin.canWrite()) {
        continue;
      }
      if (name == null) {
        rp = plugin;
        break;
      } else if (name.equals(plugin.getName())) {
        rp = plugin;
        break;
      }
    }

    if (rp != null) {
      Jar jar = new Jar(file);
      try {
        rp.put(jar);
        return;
      } catch (Exception e) {
        error("Deploying " + file + " on " + rp.getName(), e);
      } finally {
        jar.close();
      }
      return;
    }
    trace("No repo found " + file);
    throw new IllegalArgumentException("No repository found for " + file);
  }

  /**
   * Deploy the file (which must be a bundle) into the repository.
   *
   * @param file
   *            bundle
   */
  public void deploy(File file) throws Exception {
    String name = getProperty(Constants.DEPLOYREPO);
    deploy(name, file);
  }

  /**
   * Deploy the current project to a repository
   *
   * @throws Exception
   */
  public void deploy() throws Exception {
    Map<String, Map<String, String>> deploy = parseHeader(getProperty(DEPLOY));
    if (deploy.isEmpty()) {
      warning("Deploying but %s is not set to any repo", DEPLOY);
      return;
    }
    File[] outputs = getBuildFiles();
    for (File output : outputs) {
      Jar jar = new Jar(output);
      try {
        for (Deploy d : getPlugins(Deploy.class)) {
          trace("Deploying %s to: %s", jar, d);
          try {
            if (d.deploy(this, jar))
              trace("deployed %s successfully to %s", output, d);
          } catch (Exception e) {
            error("Error while deploying %s, %s", this, e);
            e.printStackTrace();
          }
        }
      } finally {
        jar.close();
      }
    }
  }

  /**
   * Macro access to the repository
   *
   * ${repo;<bsn>[;<version>[;<low|high>]]}
   */

  public String _repo(String args[]) throws Exception {
    if (args.length < 2)
      throw new IllegalArgumentException(
          "Too few arguments for repo, syntax=: ${repo ';'<bsn> [ ; <version> [; ('HIGHEST'|'LOWEST')]}");

    String bsns = args[1];
    String version = null;
    Strategy strategy = Strategy.HIGHEST;

    if (args.length > 2) {
      version = args[2];
      if (args.length == 4) {
        if (args[3].equalsIgnoreCase("HIGHEST"))
          strategy = Strategy.HIGHEST;
        else if (args[3].equalsIgnoreCase("LOWEST"))
          strategy = Strategy.LOWEST;
        else if (args[3].equalsIgnoreCase("EXACT"))
          strategy = Strategy.EXACT;
        else
          error("${repo;<bsn>;<version>;<'highest'|'lowest'|'exact'>} macro requires a strategy of 'highest' or 'lowest', and is "
              + args[3]);
      }
    }

    Collection<String> parts = split(bsns);
    List<String> paths = new ArrayList<String>();

    for (String bsn : parts) {
      Container container = getBundle(bsn, version, strategy, null);
      add(paths, container);
    }
    return join(paths);
  }

  private void add(List<String> paths, Container container) throws Exception {
    if (container.getType() == Container.TYPE.LIBRARY) {
      List<Container> members = container.getMembers();
      for (Container sub : members) {
        add(paths, sub);
      }
    } else {
      if (container.getError() == null)
        paths.add(container.getFile().getAbsolutePath());
      else {
        paths.add("<<${repo} = " + container.getBundleSymbolicName() + "-"
            + container.getVersion() + " : " + container.getError() + ">>");

        if (isPedantic()) {
          warning("Could not expand repo path request: %s ", container);
        }
      }

    }
  }

  public File getTarget() throws Exception {
    prepare();
    return target;
  }

  /**
   * This is the external method that will pre-build any dependencies if it is
   * out of date.
   *
   * @param underTest
   * @return
   * @throws Exception
   */
  public File[] build(boolean underTest) throws Exception {
    if (isNoBundles())
      return null;

    if (getProperty("-nope") != null) {
      warning("Please replace -nope with %s", NOBUNDLES);
      return null;
    }

    if (isStale()) {
      trace("Building " + this);
      files = buildLocal(underTest);
    }

    return files;
  }

  /**
   * Return the files
   */

  public File[] getFiles() {
    return files;
  }

  /**
   * Check if this project needs building. This is defined as:
   *
   */
  public boolean isStale() throws Exception {
    // When we do not generate anything ...
    if (isNoBundles())
      return false;

    long buildTime = 0;

    files = getBuildFiles(false);
    if (files == null)
      return true;

    for (File f : files) {
      if (f.lastModified() < lastModified())
        return true;

      if (buildTime < f.lastModified())
        buildTime = f.lastModified();
    }

    for (Project dependency : getDependson()) {
      if (dependency.isStale())
        return true;

      if (dependency.isNoBundles())
        continue;

      File[] deps = dependency.getBuildFiles();
      for (File f : deps) {
        if (f.lastModified() >= buildTime)
          return true;
      }
    }
    return false;
  }

  /**
   * This method must only be called when it is sure that the project has been
   * build before in the same session.
   *
   * It is a bit yucky, but ant creates different class spaces which makes it
   * hard to detect we already build it.
   *
   * This method remembers the files in the appropriate instance vars.
   *
   * @return
   */

  public File[] getBuildFiles() throws Exception {
    return getBuildFiles(true);
  }

  public File[] getBuildFiles(boolean buildIfAbsent) throws Exception {
    if (files != null)
      return files;

    File f = new File(getTarget(), BUILDFILES);
    if (f.isFile()) {
      FileReader fin = new FileReader(f);
      BufferedReader rdr = new BufferedReader(fin);
      try {
        List<File> files = newList();
        for (String s = rdr.readLine(); s != null; s = rdr.readLine()) {
          s = s.trim();
          File ff = new File(s);
          if (!ff.isFile()) {
            error("buildfile lists file but the file does not exist %s", ff);
          } else
            files.add(ff);
        }
        return this.files = files.toArray(new File[files.size()]);
      } finally {
        fin.close();
      }
    }
    if (buildIfAbsent)
      return files = buildLocal(false);
    else
      return files = null;
  }

  /**
   * Build without doing any dependency checking. Make sure any dependent
   * projects are built first.
   *
   * @param underTest
   * @return
   * @throws Exception
   */
  public File[] buildLocal(boolean underTest) throws Exception {
    if (isNoBundles())
      return null;

    long buildtime = System.currentTimeMillis();
    File bfs = new File(getTarget(), BUILDFILES);
    bfs.delete();

    files = null;
    ProjectBuilder builder = getBuilder(null);
    if (underTest)
      builder.setProperty(Constants.UNDERTEST, "true");
    Jar jars[] = builder.builds();
    File[] files = new File[jars.length];

    for (int i = 0; i < jars.length; i++) {
      Jar jar = jars[i];
      files[i] = saveBuild(jar);
    }
    getInfo(builder);
    builder.close();
    if (isOk()) {
      this.files = files;

      // Write out the filenames in the buildfiles file
      // so we can get them later evenin another process
      FileWriter fw = new FileWriter(bfs);
      try {
        for (File f : files) {
          fw.append(f.getAbsolutePath());
          fw.append("\n");
        }
      } finally {
        fw.close();
      }
      getWorkspace().changedFile(bfs);
      this.buildtime = buildtime;
      return files;
    } else
      return null;
  }

  /**
   * Answer if this project does not have any output
   *
   * @return
   */
  public boolean isNoBundles() {
    return getProperty(NOBUNDLES) != null;
  }

  public File saveBuild(Jar jar) throws Exception {
    try {
      String bsn = jar.getName();
      File f = getOutputFile(bsn);
      String msg = "";
      if (!f.exists() || f.lastModified() < jar.lastModified()) {
        reportNewer(f.lastModified(), jar);
        f.delete();
        if (!f.getParentFile().isDirectory())
          f.getParentFile().mkdirs();
        jar.write(f);

        getWorkspace().changedFile(f);
      } else {
        msg = "(not modified since " + new Date(f.lastModified()) + ")";
      }
      trace(jar.getName() + " (" + f.getName() + ") " + jar.getResources().size() + " " + msg);
      return f;
    } finally {
      jar.close();
    }
  }

  public File getOutputFile(String bsn) throws Exception {
    return new File(getTarget(), bsn + ".jar");
  }

  private void reportNewer(long lastModified, Jar jar) {
    if (isTrue(getProperty(Constants.REPORTNEWER))) {
      StringBuilder sb = new StringBuilder();
      String del = "Newer than " + new Date(lastModified);
      for (Map.Entry<String, Resource> entry : jar.getResources().entrySet()) {
        if (entry.getValue().lastModified() > lastModified) {
          sb.append(del);
          del = ", \n     ";
          sb.append(entry.getKey());
        }
      }
      if (sb.length() > 0)
        warning(sb.toString());
    }
  }

  /**
   * Refresh if we are based on stale data. This also implies our workspace.
   */
  public boolean refresh() {
    boolean changed = false;
    if (isCnf()) {
      changed = workspace.refresh();
    }
    return super.refresh() || changed;
  }

  public boolean isCnf() {
    return getBase().getName().equals(Workspace.CNFDIR);
  }

  public void propertiesChanged() {
    super.propertiesChanged();
    preparedPaths = false;
    files = null;

  }

  public String getName() {
    return getBase().getName();
  }

  public Map<String, Action> getActions() {
    Map<String, Action> all = newMap();
    Map<String, Action> actions = newMap();
    fillActions(all);
    getWorkspace().fillActions(all);

    for (Map.Entry<String, Action> action : all.entrySet()) {
      String key = getReplacer().process(action.getKey());
      if (key != null && key.trim().length() != 0)
        actions.put(key, action.getValue());
    }
    return actions;
  }

  public void fillActions(Map<String, Action> all) {
    List<NamedAction> plugins = getPlugins(NamedAction.class);
    for (NamedAction a : plugins)
      all.put(a.getName(), a);

    Map<String, Map<String, String>> actions = parseHeader(getProperty("-actions",
        DEFAULT_ACTIONS));
    for (Map.Entry<String, Map<String, String>> entry : actions.entrySet()) {
      String key = Processor.removeDuplicateMarker(entry.getKey());
      Action action;

      if (entry.getValue().get("script") != null) {
        // TODO check for the type
        action = new ScriptAction(entry.getValue().get("type"), entry.getValue().get(
            "script"));
      } else {
        action = new ReflectAction(key);
      }
      String label = entry.getValue().get("label");
      all.put(label.toLowerCase(), action);
    }
  }

  public void release() throws Exception {
    release(false);
  }

  /**
   * Release.
   *
   * @param name
   *            The repository name
   * @throws Exception
   */
  public void release(String name) throws Exception {
    release(name, false);
  }

  public void clean() throws Exception {
    File target = getTarget();
    if (target.isDirectory() && target.getParentFile() != null) {
      IO.delete(target);
      target.mkdirs();
    }
    if (getOutput().isDirectory())
      IO.delete(getOutput());
    getOutput().mkdirs();
  }

  public File[] build() throws Exception {
    return build(false);
  }

  public void run() throws Exception {
    ProjectLauncher pl = getProjectLauncher();
    pl.setTrace(isTrace());
    pl.launch();
  }

  public void test() throws Exception {
    clear();
    ProjectTester tester = getProjectTester();
    tester.setContinuous(isTrue(getProperty(Constants.TESTCONTINUOUS)));
    tester.prepare();

    if (!isOk()) {
      return;
    }
    int errors = tester.test();
    if (errors == 0) {
      System.out.println("No Errors");
    } else {
      if (errors > 0) {
        System.out.println(errors + " Error(s)");

      } else
        System.out.println("Error " + errors);
    }
  }

  /**
   * This methods attempts to turn any jar into a valid jar. If this is a
   * bundle with manifest, a manifest is added based on defaults. If it is a
   * bundle, but not r4, we try to add the r4 headers.
   *
   * @param descriptor
   * @param in
   * @return
   * @throws Exception
   */
  public Jar getValidJar(File f) throws Exception {
    Jar jar = new Jar(f);
    return getValidJar(jar, f.getAbsolutePath());
  }

  public Jar getValidJar(URL url) throws Exception {
    InputStream in = url.openStream();
    try {
      Jar jar = new Jar(url.getFile().replace('/', '.'), in, System.currentTimeMillis());
      return getValidJar(jar, url.toString());
    } finally {
      in.close();
    }
  }

  public Jar getValidJar(Jar jar, String id) throws Exception {
    Manifest manifest = jar.getManifest();
    if (manifest == null) {
      trace("Wrapping with all defaults");
      Builder b = new Builder(this);
      b.addClasspath(jar);
      b.setProperty("Bnd-Message", "Wrapped from " + id + "because lacked manifest");
      b.setProperty(Constants.EXPORT_PACKAGE, "*");
      b.setProperty(Constants.IMPORT_PACKAGE, "*;resolution:=optional");
      jar = b.build();
    } else if (manifest.getMainAttributes().getValue(Constants.BUNDLE_MANIFESTVERSION) == null) {
      trace("Not a release 4 bundle, wrapping with manifest as source");
      Builder b = new Builder(this);
      b.addClasspath(jar);
      b.setProperty(Constants.PRIVATE_PACKAGE, "*");
      b.mergeManifest(manifest);
      String imprts = manifest.getMainAttributes().getValue(Constants.IMPORT_PACKAGE);
      if (imprts == null)
        imprts = "";
      else
        imprts += ",";
      imprts += "*;resolution=optional";

      b.setProperty(Constants.IMPORT_PACKAGE, imprts);
      b.setProperty("Bnd-Message", "Wrapped from " + id + "because had incomplete manifest");
      jar = b.build();
    }
    return jar;
  }

  public String _project(String args[]) {
    return getBase().getAbsolutePath();
  }

  public void bump(String mask) throws IOException {
    Sed sed = new Sed(getReplacer(), getPropertiesFile());
    sed.replace("(Bundle-Version\\s*(:|=)\\s*)(([0-9]+(\\.[0-9]+(\\.[0-9]+)?)?))",
        "$1${version;" + mask + ";$3}");
    sed.doIt();
    forceRefresh();
  }

  public void bump() throws IOException {
    bump(getProperty(BUMPPOLICY, "=+0"));
  }

  public void action(String command) throws Throwable {
    Map<String, Action> actions = getActions();

    Action a = actions.get(command);
    if (a == null)
      a = new ReflectAction(command);

    before(this, command);
    try {
      a.execute(this, command);
    } catch (Throwable t) {
      after(this, command, t);
      throw t;
    }
  }

  /**
   * Run all before command plugins
   *
   */
  void before(Project p, String a) {
    List<CommandPlugin> testPlugins = getPlugins(CommandPlugin.class);
    for (CommandPlugin testPlugin : testPlugins) {
      testPlugin.before(this, a);
    }
  }

  /**
   * Run all after command plugins
   */
  void after(Project p, String a, Throwable t) {
    List<CommandPlugin> testPlugins = getPlugins(CommandPlugin.class);
    for (int i = testPlugins.size() - 1; i >= 0; i--) {
      testPlugins.get(i).after(this, a, t);
    }
  }

  public String _findfile(String args[]) {
    File f = getFile(args[1]);
    List<String> files = new ArrayList<String>();
    tree(files, f, "", Instruction.getPattern(args[2]));
    return join(files);
  }

  void tree(List<String> list, File current, String path, Instruction instr) {
    if (path.length() > 0)
      path = path + "/";

    String subs[] = current.list();
    if (subs != null) {
      for (String sub : subs) {
        File f = new File(current, sub);
        if (f.isFile()) {
          if (instr.matches(sub) && !instr.isNegated())
            list.add(path + sub);
        } else
          tree(list, f, path + sub, instr);
      }
    }
  }

  public void refreshAll() {
    workspace.refresh();
    refresh();
  }

  @SuppressWarnings("unchecked") public void script(String type, String script) throws Exception {
    // TODO check tyiping
    List<Scripter> scripters = getPlugins(Scripter.class);
    if (scripters.isEmpty()) {
      error("Can not execute script because there are no scripters registered: %s", script);
      return;
    }
    @SuppressWarnings("rawtypes") Map x = (Map) getProperties();
    scripters.get(0).eval((Map<String, Object>) x, new StringReader(script));
  }

  public String _repos(String args[]) throws Exception {
    List<RepositoryPlugin> repos = getPlugins(RepositoryPlugin.class);
    List<String> names = new ArrayList<String>();
    for (RepositoryPlugin rp : repos)
      names.add(rp.getName());
    return join(names, ", ");
  }

  public String _help(String args[]) throws Exception {
    if (args.length == 1)
      return "Specify the option or header you want information for";

    Syntax syntax = Syntax.HELP.get(args[1]);
    if (syntax == null)
      return "No help for " + args[1];

    String what = null;
    if (args.length > 2)
      what = args[2];

    if (what == null || what.equals("lead"))
      return syntax.getLead();
    if (what == null || what.equals("example"))
      return syntax.getExample();
    if (what == null || what.equals("pattern"))
      return syntax.getPattern();
    if (what == null || what.equals("values"))
      return syntax.getValues();

    return "Invalid type specified for help: lead, example, pattern, values";
  }

  /**
   * Returns containers for the deliverables of this project. The deliverables
   * is the project builder for this project if no -sub is specified.
   * Otherwise it contains all the sub bnd files.
   *
   * @return A collection of containers
   *
   * @throws Exception
   */
  public Collection<Container> getDeliverables() throws Exception {
    List<Container> result = new ArrayList<Container>();
    Collection<? extends Builder> builders = getSubBuilders();

    for (Builder builder : builders) {
      Container c = new Container(this, builder.getBsn(), builder.getVersion(),
          Container.TYPE.PROJECT, getOutputFile(builder.getBsn()), null, null);
      result.add(c);
    }
    return result;

  }

  /**
   * Return the builder associated with the give bnd file or null. The bnd.bnd
   * file can contain -sub option. This option allows specifying files in the
   * same directory that should drive the generation of multiple deliverables.
   * This method figures out if the bndFile is actually one of the bnd files
   * of a deliverable.
   *
   * @param bndFile
   *            A file pointing to a bnd file.
   * @return null or the builder for a sub file.
   * @throws Exception
   */
  public Builder getSubBuilder(File bndFile) throws Exception {
    bndFile = bndFile.getCanonicalFile();

    // Verify that we are inside the project.
    File base = getBase().getCanonicalFile();
    if (!bndFile.getAbsolutePath().startsWith(base.getAbsolutePath()))
      return null;

    Collection<? extends Builder> builders = getSubBuilders();
    for (Builder sub : builders) {
      File propertiesFile = sub.getPropertiesFile();
      if (propertiesFile != null) {
        if (propertiesFile.getCanonicalFile().equals(bndFile)) {
          // Found it!
          return sub;
        }
      }
    }
    return null;
  }

  /**
   * Answer the container associated with a given bsn.
   *
   * @param bndFile
   *            A file pointing to a bnd file.
   * @return null or the builder for a sub file.
   * @throws Exception
   */
  public Container getDeliverable(String bsn, Map<String, String> attrs) throws Exception {
    Collection<? extends Builder> builders = getSubBuilders();
    for (Builder sub : builders) {
      if (sub.getBsn().equals(bsn))
        return new Container(this, getOutputFile(bsn));
    }
    return null;
  }

  /**
   * Get a list of the sub builders. A bnd.bnd file can contain the -sub
   * option. This will generate multiple deliverables. This method returns the
   * builders for each sub file. If no -sub option is present, the list will
   * contain a builder for the bnd.bnd file.
   *
   * @return A list of builders.
   * @throws Exception
   */
  public Collection<? extends Builder> getSubBuilders() throws Exception {
    return getBuilder(null).getSubBuilders();
  }

  /**
   * Calculate the classpath. We include our own runtime.jar which includes
   * the test framework and we include the first of the test frameworks
   * specified.
   *
   * @throws Exception
   */
  Collection<File> toFile(Collection<Container> containers) throws Exception {
    ArrayList<File> files = new ArrayList<File>();
    for (Container container : containers) {
      container.contributeFiles(files, this);
    }
    return files;
  }

  public Collection<String> getRunVM() {
    Map<String, Map<String, String>> hdr = parseHeader(getProperty(RUNVM));
    return hdr.keySet();
  }

  public Map<String, String> getRunProperties() {
    return OSGiHeader.parseProperties(getProperty(RUNPROPERTIES));
  }

  /**
   * Get a launcher.
   *
   * @return
   * @throws Exception
   */
  public ProjectLauncher getProjectLauncher() throws Exception {
    return getHandler(ProjectLauncher.class, getRunpath(), LAUNCHER_PLUGIN,
        "biz.aQute.launcher");
  }

  public ProjectTester getProjectTester() throws Exception {
    return getHandler(ProjectTester.class, getTestpath(), TESTER_PLUGIN, "biz.aQute.junit");
  }

  private <T> T getHandler(Class<T> target, Collection<Container> containers, String header,
      String defaultHandler) throws Exception {
    Class<? extends T> handlerClass = target;

    // Make sure we find at least one handler, but hope to find an earlier
    // one
    List<Container> withDefault = Create.list();
    withDefault.addAll(containers);
    withDefault.addAll(getBundles(Strategy.HIGHEST, defaultHandler, null));

    for (Container c : withDefault) {
      Manifest manifest = c.getManifest();

      if (manifest != null) {
        String launcher = manifest.getMainAttributes().getValue(header);
        if (launcher != null) {
          Class<?> clz = getClass(launcher, c.getFile());
          if (clz != null) {
            if (!target.isAssignableFrom(clz)) {
              error("Found a %s class in %s but it is not compatible with: %s", clz,
                  c, target);
            } else {
              handlerClass = clz.asSubclass(target);
              Constructor<? extends T> constructor = handlerClass
                  .getConstructor(Project.class);
              return constructor.newInstance(this);
            }
          }
        }
      }
    }
    throw new IllegalArgumentException("Default handler for " + header + " not found in "
        + defaultHandler);
  }

  public synchronized boolean lock(String reason) throws InterruptedException {
    if (!lock.tryLock(5, TimeUnit.SECONDS)) {
      error("Could not acquire lock for %s, was locked by %s for %s", reason, lockingThread,
          lockingReason);
      System.out.printf("Could not acquire lock for %s, was locked by %s for %s\n", reason,
          lockingThread, lockingReason);
      System.out.flush();
      return false;
    }
    this.lockingReason = reason;
    this.lockingThread = Thread.currentThread();
    return true;
  }

  public void unlock() {
    lockingReason = null;
    lock.unlock();
  }

  /**
   * Make this project delay the calculation of the run dependencies.
   *
   * The run dependencies calculation can be done in prepare or until the
   * dependencies are actually needed.
   */
  public void setDelayRunDependencies(boolean x) {
    delayRunDependencies = x;
  }

}
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