tilelive-tar

A tar sink for tilelive that is browser-compatible.

npm install tilelive-tar

Provide tar://<dir>.<ext> to download and pack all the tiles in the tar under the given directory. Files will be saved according to the provided extension name.

Usage

var tilelive = require('tilelive')
var TarBackend = require('tilelive-tar')
TarBackend.registerProtocols(tilelive)

tilelive.load('somewhere://path/to/some/tiles', function (err, source) {
  if (err) throw err
  tilelive.load('tar://tiles.png', function (err, sink) {
    if (err) throw err
    var readStream = source.createReadStream({minzoom, maxzoom, bounds})
    var writeStream = sink.createWriteStream()
    readStream.pipe(writeStream)
    .on('error', console.error)
    .on('end', function () {
      // sink.pack is the finalized tar file 
      // as a streams2 read stream that can be piped anywhere
      sink.pack.pipe(process.stdout)
    })
  })
})

In Browser

See an example of using tilelive-tar with StreamSaver.js to download tiles without touching the server, at karissa/tile-download-ui.

License

MIT