コード例 #1
0
ファイル: Files.java プロジェクト: GeomaticM/ehcache
  /**
   * Copies a source file to a destination file, optionally preserving the source's last
   * modification time. We already have an input stream to read the source file, but we know nothing
   * about the destination file yet. Note that this method <em>never</em> closes the given input
   * stream!
   *
   * @throws FileNotFoundException If either the source or the destination cannot get accessed.
   * @throws InputIOException If copying the data fails because of an IOException in the source.
   * @throws IOException If copying the data fails because of an IOException in the destination.
   */
  private static void cp0(
      final boolean preserve, final java.io.File src, final InputStream in, final java.io.File dst)
      throws IOException {
    try {
      if (dst instanceof File) {
        final File dstFile = (File) dst;
        dstFile.ensureNotVirtualRoot("cannot write");
        final String dstEntryName = dstFile.getEnclEntryName();
        if (dstEntryName != null) {
          cp0(preserve, src, in, dstFile.getEnclArchive().getArchiveController(), dstEntryName);
          return;
        }
      }
    } catch (RfsEntryFalsePositiveException dstIsNotArchive) {
    }

    // Treat the destination like a regular file.
    final OutputStream out = new java.io.FileOutputStream(dst);
    try {
      Streams.cat(in, out);
    } finally {
      out.close();
    }
    if (preserve && !dst.setLastModified(src.lastModified()))
      throw new IOException(dst.getPath() + " (cannot preserve last modification time)");
  }
コード例 #2
0
ファイル: Files.java プロジェクト: GeomaticM/ehcache
        public void run() throws IOException {
          // Update controllers.
          // This may invalidate the file system object, so it must be
          // done first in case srcController and dstController are the
          // same!
          class SrcControllerUpdater implements IORunnable {
            public void run() throws IOException {
              srcController.autoUmount(srcEntryName);
              srcController.readLock().lock(); // downgrade to read lock upon return
            }
          } // class SrcControllerUpdater

          final ArchiveEntry srcEntry, dstEntry;
          final Delta delta;
          srcController.runWriteLocked(new SrcControllerUpdater());
          try {
            dstController.autoUmount(dstEntryName);

            // Get source archive entry.
            final ArchiveFileSystem srcFileSystem = srcController.autoMount(false);
            srcEntry = srcFileSystem.get(srcEntryName);

            // Get destination archive entry.
            final boolean lenient = File.isLenient();
            final ArchiveFileSystem dstFileSystem = dstController.autoMount(lenient);
            delta = dstFileSystem.link(dstEntryName, lenient, preserve ? srcEntry : null);
            dstEntry = delta.getEntry();

            // Create input stream.
            in = srcController.createInputStream(srcEntry, dstEntry);
          } finally {
            srcController.readLock().unlock();
          }

          try {
            // Create output stream.
            out = dstController.createOutputStream(dstEntry, srcEntry);

            try {
              // Now link the destination entry into the file system.
              delta.commit();
            } catch (IOException ex) {
              out.close();
              throw ex;
            }
          } catch (IOException ex) {
            try {
              in.close();
            } catch (IOException inFailure) {
              throw new InputIOException(inFailure);
            }
            throw ex;
          }
        }
コード例 #3
0
ファイル: Files.java プロジェクト: GeomaticM/ehcache
 /** @see File#cp(InputStream, OutputStream) */
 public static void cp(final InputStream in, final OutputStream out) throws IOException {
   try {
     try {
       Streams.cat(in, out);
     } finally {
       out.close();
     }
   } finally {
     try {
       in.close();
     } catch (IOException ex) {
       throw new InputIOException(ex);
     }
   }
 }
コード例 #4
0
ファイル: Files.java プロジェクト: GeomaticM/ehcache
  /**
   * Copies a source file to a destination file, optionally preserving the source's last
   * modification time. We already have an input stream to read the source file and the destination
   * appears to be an entry in an archive file. Note that this method <em>never</em> closes the
   * given input stream!
   *
   * <p>Note that this method synchronizes on the class object in order to prevent dead locks by two
   * threads copying archive entries to the other's source archive concurrently!
   *
   * @throws FalsePositiveException If the destination is a false positive and the exception cannot
   *     get resolved within this method.
   * @throws InputIOException If copying the data fails because of an IOException in the source.
   * @throws IOException If copying the data fails because of an IOException in the destination.
   */
  static final void cp0(
      final boolean preserve,
      final java.io.File src,
      final InputStream in,
      final ArchiveController dstController,
      final String dstEntryName)
      throws IOException {
    // Do not assume anything about the lock status of the controller:
    // This method may be called from a subclass while a lock is acquired!
    // assert !dstController.readLock().isLocked();
    // assert !dstController.writeLock().isLocked();

    try {
      class OStreamCreator implements IORunnable {
        OutputStream out; // = null;

        public void run() throws IOException {
          // Update controller.
          // This may invalidate the file system object, so it must be
          // done first in case srcController and dstController are the
          // same!
          dstController.autoUmount(dstEntryName);

          final boolean lenient = File.isLenient();

          // Get source archive entry.
          final ArchiveEntry srcEntry = new RfsEntry(src);

          // Get destination archive entry.
          final ArchiveFileSystem dstFileSystem = dstController.autoMount(lenient);
          final Delta delta = dstFileSystem.link(dstEntryName, lenient, preserve ? srcEntry : null);
          final ArchiveEntry dstEntry = delta.getEntry();

          // Create output stream.
          out = dstController.createOutputStream(dstEntry, srcEntry);

          // Now link the destination entry into the file system.
          delta.commit();
        }
      }

      // Create the output stream while the destination controller is
      // write locked.
      final OStreamCreator stream = new OStreamCreator();
      dstController.runWriteLocked(stream);
      final OutputStream out = stream.out;

      // Finally copy the entry data.
      try {
        Streams.cat(in, out);
      } finally {
        out.close();
      }
    } catch (ArchiveEntryFalsePositiveException ex) {
      assert dstController == ex.getController();
      // Reroute call to the destination's enclosing ArchiveController.
      cp0(
          preserve,
          src,
          in,
          dstController.getEnclController(),
          dstController.enclEntryName(dstEntryName));
    }
  }