npm install stream-fsmA streaming finite state machine
npm install stream-fsm
``javascript
var fsm = require('stream-fsm');
var out = {};
var stream = fsm({
// init is the default state
init : fsm.want(5, function(data) {
out.start = data;
this.change('next');
}),
next : fsm.want(4, function(data) {
out.next = data;
this.change('last');
}),
last : fsm.want(4, function(data) {
out.last = data;
this.done();
})
}, function() {
console.log(out);
// outputs: { start: 'start', next: 'next', last: 'last' }
});
stream.write('startnextlast');
`
`javascript
var stream = fsm({
init : function(d) {
// queue data to be written on writable portion of the stream
this.queue(d);
// this is required for tracking
// return the number of bytes consumed
// Note: fsm.want does this already
return d.length;
}
});
`
stream.fsm.cache() - returns the data that is currently held in the cachestream.fsm.mode`() - returns current mode of the fsm
MIT