How to use fd-slicer - 10 common examples

fs.open(localFile, 'r', function(err, fd) {
      if (err) return handleError(err);
      localFileSlicer = fd_slicer.createFromFd(fd, {autoClose: true});
      localFileSlicer.on('error', handleError);
      localFileSlicer.on('close', function() {
        uploader.emit('fileClosed');
      });

      // keep an extra reference alive until we decide that we're completely
      // done with the file
      localFileSlicer.ref();

      uploader.emit('fileOpened', localFileSlicer);

      fs.fstat(fd, function(err, stat) {
        if (err) return handleError(err);
        localFileStat = stat;
        uploader.progressTotal = stat.size;
        startPuttingObject();

fs.open(publicFile.path, 'wx', function(err, fd) {
    if (err) return self.handleError(err);
    var slicer = fdSlicer.createFromFd(fd, {autoClose: true});

    // end option here guarantees that no more than that amount will be written
    // or else an error will be emitted
    internalFile.ws = slicer.createWriteStream({end: self.maxFilesSize - self.totalFileSize});

    // if an error ocurred while we were waiting for fs.open we handle that
    // cleanup now
    self.openedFiles.push(internalFile);
    if (self.error) return cleanupOpenFiles(self);

    var prevByteCount = 0;
    internalFile.ws.on('error', function(err) {
      self.handleError(err.code === 'ETOOBIG'
        ? createError(413, err.message, { code: err.code })
        : err)
    });

fs.open(publicFile.path, 'wx', function(err, fd) {
    if (err) return self.handleError(err);
    var slicer = fdSlicer.createFromFd(fd, {autoClose: true});

    // end option here guarantees that no more than that amount will be written
    // or else an error will be emitted
    internalFile.ws = slicer.createWriteStream({end: self.maxFilesSize - self.totalFileSize});

    // if an error ocurred while we were waiting for fs.open we handle that
    // cleanup now
    self.openedFiles.push(internalFile);
    if (self.error) return cleanupOpenFiles(self);

    var prevByteCount = 0;
    internalFile.ws.on('error', function(err) {
      self.handleError(err.code === 'ETOOBIG'
        ? createError(413, err.message, { code: err.code })
        : err)
    });

function fromBuffer(buffer, options, callback) {
  if (typeof options === "function") {
    callback = options;
    options = null;
  }
  if (options == null) options = {};
  options.autoClose = false;
  if (options.lazyEntries == null) options.lazyEntries = false;
  // i got your open file right here.
  var reader = fd_slicer.createFromBuffer(buffer);
  fromRandomAccessReader(reader, buffer.length, options, callback);
}

function fromBuffer(buffer, options, callback) {
  if (typeof options === "function") {
    callback = options;
    options = null;
  }
  if (options == null) options = {};
  options.autoClose = false;
  if (options.lazyEntries == null) options.lazyEntries = false;
  // i got your open file right here.
  var reader = fd_slicer.createFromBuffer(buffer);
  fromRandomAccessReader(reader, buffer.length, options, callback);
}

function fromBuffer(buffer, options, callback) {
  if (typeof options === "function") {
    callback = options;
    options = null;
  }
  if (options == null) options = {};
  options.autoClose = false;
  if (options.lazyEntries == null) options.lazyEntries = false;
  if (options.decodeStrings == null) options.decodeStrings = true;
  if (options.validateEntrySizes == null) options.validateEntrySizes = true;
  if (options.strictFileNames == null) options.strictFileNames = false;
  // limit the max chunk size. see https://github.com/thejoshwolfe/yauzl/issues/87
  var reader = fd_slicer.createFromBuffer(buffer, {maxChunkSize: 0x10000});
  fromRandomAccessReader(reader, buffer.length, options, callback);
}

function fromBuffer(buffer, options, callback) {
  if (typeof options === "function") {
    callback = options;
    options = null;
  }
  if (options == null) options = {};
  options.autoClose = false;
  if (options.lazyEntries == null) options.lazyEntries = false;
  if (options.decodeStrings == null) options.decodeStrings = true;
  if (options.validateEntrySizes == null) options.validateEntrySizes = true;
  // i got your open file right here.
  var reader = fd_slicer.createFromBuffer(buffer);
  fromRandomAccessReader(reader, buffer.length, options, callback);
}

fs.fstat(fd, function(err, stats) {
    if (err) return callback(err);
    var reader = fd_slicer.createFromFd(fd, {autoClose: true});
    fromRandomAccessReader(reader, stats.size, options, callback);
  });
}

fs.fstat(fd, function(err, stats) {
    if (err) return callback(err);
    var reader = fd_slicer.createFromFd(fd, {autoClose: true});
    fromRandomAccessReader(reader, stats.size, options, callback);
  });
}

fs.fstat(fd, function(err, stats) {
    if (err) return callback(err);
    var reader = fd_slicer.createFromFd(fd, {autoClose: true});
    fromRandomAccessReader(reader, stats.size, options, callback);
  });
}