com.intellij.openapi.vfs.newvfs.FileAttribute Java Examples

The following examples show how to use com.intellij.openapi.vfs.newvfs.FileAttribute. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: FSRecords.java From consulo with Apache License 2.0

6 votes

@Nullable
public static DataInputStream readAttributeWithLock(int fileId, @Nonnull FileAttribute att) {
  return readAndHandleErrors(() -> {
    try (DataInputStream stream = readAttribute(fileId, att)) {
      if (stream != null && att.isVersioned()) {
        try {
          int actualVersion = DataInputOutputUtil.readINT(stream);
          if (actualVersion != att.getVersion()) {
            return null;
          }
        }
        catch (IOException e) {
          return null;
        }
      }
      return stream;
    }
  });
}

Example #2

Source File: FSRecords.java From consulo with Apache License 2.0

5 votes

@Nonnull
public static DataOutputStream writeAttribute(final int fileId, @Nonnull FileAttribute att) {
  DataOutputStream stream = new AttributeOutputStream(fileId, att);
  if (att.isVersioned()) {
    try {
      DataInputOutputUtil.writeINT(stream, att.getVersion());
    }
    catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  return stream;
}

Example #3

Source File: FSRecords.java From consulo with Apache License 2.0

4 votes

@Nullable
private static DataInputStream readAttribute(int fileId, @Nonnull FileAttribute attribute) throws IOException {
  checkFileIsValid(fileId);

  int recordId = getAttributeRecordId(fileId);
  if (recordId == 0) return null;
  int encodedAttrId = DbConnection.getAttributeId(attribute.getId());

  Storage storage = getAttributesStorage();

  int page = 0;

  try (DataInputStream attrRefs = storage.readStream(recordId)) {
    if (bulkAttrReadSupport) skipRecordHeader(attrRefs, DbConnection.RESERVED_ATTR_ID, fileId);

    while (attrRefs.available() > 0) {
      final int attIdOnPage = DataInputOutputUtil.readINT(attrRefs);
      final int attrAddressOrSize = DataInputOutputUtil.readINT(attrRefs);

      if (attIdOnPage != encodedAttrId) {
        if (inlineAttributes && attrAddressOrSize < MAX_SMALL_ATTR_SIZE) {
          attrRefs.skipBytes(attrAddressOrSize);
        }
      }
      else {
        if (inlineAttributes && attrAddressOrSize < MAX_SMALL_ATTR_SIZE) {
          byte[] b = new byte[attrAddressOrSize];
          attrRefs.readFully(b);
          return new DataInputStream(new UnsyncByteArrayInputStream(b));
        }
        page = inlineAttributes ? attrAddressOrSize - MAX_SMALL_ATTR_SIZE : attrAddressOrSize;
        break;
      }
    }
  }

  if (page == 0) {
    return null;
  }
  DataInputStream stream = getAttributesStorage().readStream(page);
  if (bulkAttrReadSupport) skipRecordHeader(stream, encodedAttrId, fileId);
  return stream;
}

Example #4

Source File: FSRecords.java From consulo with Apache License 2.0

4 votes

private static int findAttributePage(int fileId, @Nonnull FileAttribute attr, boolean toWrite) throws IOException {
  checkFileIsValid(fileId);

  int recordId = getAttributeRecordId(fileId);
  int encodedAttrId = DbConnection.getAttributeId(attr.getId());
  boolean directoryRecord = false;

  Storage storage = getAttributesStorage();

  if (recordId == 0) {
    if (!toWrite) return 0;

    recordId = storage.createNewRecord();
    setAttributeRecordId(fileId, recordId);
    directoryRecord = true;
  }
  else {
    try (DataInputStream attrRefs = storage.readStream(recordId)) {
      if (bulkAttrReadSupport) skipRecordHeader(attrRefs, DbConnection.RESERVED_ATTR_ID, fileId);

      while (attrRefs.available() > 0) {
        final int attIdOnPage = DataInputOutputUtil.readINT(attrRefs);
        final int attrAddressOrSize = DataInputOutputUtil.readINT(attrRefs);

        if (attIdOnPage == encodedAttrId) {
          if (inlineAttributes) {
            return attrAddressOrSize < MAX_SMALL_ATTR_SIZE ? -recordId : attrAddressOrSize - MAX_SMALL_ATTR_SIZE;
          }
          else {
            return attrAddressOrSize;
          }
        }
        else {
          if (inlineAttributes && attrAddressOrSize < MAX_SMALL_ATTR_SIZE) {
            attrRefs.skipBytes(attrAddressOrSize);
          }
        }
      }
    }
  }

  if (toWrite) {
    try (AbstractStorage.AppenderStream appender = storage.appendStream(recordId)) {
      if (bulkAttrReadSupport) {
        if (directoryRecord) {
          DataInputOutputUtil.writeINT(appender, DbConnection.RESERVED_ATTR_ID);
          DataInputOutputUtil.writeINT(appender, fileId);
        }
      }

      DataInputOutputUtil.writeINT(appender, encodedAttrId);
      int attrAddress = storage.createNewRecord();
      DataInputOutputUtil.writeINT(appender, inlineAttributes ? attrAddress + MAX_SMALL_ATTR_SIZE : attrAddress);
      DbConnection.REASONABLY_SMALL.myAttrPageRequested = true;
      return attrAddress;
    }
    finally {
      DbConnection.REASONABLY_SMALL.myAttrPageRequested = false;
    }
  }

  return 0;
}

Example #5

Source File: FSRecords.java From consulo with Apache License 2.0

4 votes

private AttributeOutputStream(final int fileId, @Nonnull FileAttribute attribute) {
  super(new BufferExposingByteArrayOutputStream());
  myFileId = fileId;
  myAttribute = attribute;
}

Example #6

Source File: VirtualFileGistImpl.java From consulo with Apache License 2.0

4 votes

private FileAttribute getFileAttribute(@Nullable Project project) {
  synchronized (ourAttributes) {
    return ourAttributes.get(Pair.create(myId + (project == null ? "###noProject###" : project.getLocationHash()), myVersion + ourInternalVersion));
  }
}