Examples - Stream blog post - FileStream

ex01-filestream-getfile.js

// Get the source file (this one is in Resources).
var infile = Titanium.Filesystem.getFile('emmy.jpg');
if (!infile.exists()) {
  Ti.API.error("File not exists()");
  return;
}

ex02-filestream-openread.js

// Open for reading.
var instream = infile.open(Titanium.Filesystem.MODE_READ);

ex03-filestream-getoutfile.js

// Get a file descriptor for output file. (Doesn't need to exist.)
var outfile =
  Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory, 'emmy_out.jpg');

ex04-filestream-openwrite.js

// Open for writing.
var outstream = outfile.open(Titanium.Filesystem.MODE_WRITE);

ex04a-filestream-openstream.js

// The last two steps could have been combined into one using this code:
//var outstream = 
//  Titanium.Filesystem.openStream(Titanium.Filesystem.MODE_WRITE, Titanium.Filesystem.applicationDataDirectory, 'emmy_out.jpg');

ex05-filestream-buffer.js

// Create a 1K buffer for reading chunks.
var buffer = Titanium.createBuffer({length: 1024});

ex06-filestream-loopreadwrite.js

// Read and write chunks.
var size = 0;
while ((size = instream.read(buffer)) > -1) {
  outstream.write(buffer);
  Titanium.API.info('Wrote ' + size + ' bytes');
}

ex07-filestream-cleanup.js

// Cleanup.
instream.close();
outstream.close();