Streams for parsing and stringifying big JSON objects
Streaming parser and stringifier that act like writable and readable streams
_/!\ This module has been partly rewritten to work with new streams in node >= 0.10 /!_
You can build a
ParseStream like so:
var json = require'json-streams';var p = jsoncreateParseStream;
p is an instance of the
json.ParseStream is a
writable stream which means you can write or pipe data to it.
var net = require'net';var c = netcreateConnection1337 'example.com';cpipep;
At the moment, ParseStream supports only one output event which is the
'end' event. The listener gets called with the fully parsed object as
argument. No data is buffered during the parsing so you can load very big
JSON files. Support for finer events is on the TODO list as well as the
possibility to ignore some objects that are not needed and should be
pon'end'// do something with your object
StringifyStream is only a very thin wrapper around
json-streamify. In fact, It is so
thin that everything is still synchronous. Wrapping this correctly or
rewriting some parts is at top priority on the TODO list.
StringifyStreamso that it can pause when stringifying an object and continue later.
- allow users to register on more specific events on
ParseStream. I'm thinking of somekind of subscription pattern where one could register for
o.member.arrayMember. However this is very non-trivial and should be somewhat retrocompatible with the current behaviour.
You are very welcome to file bugs on the github tracker and send patches or pull requests.
Copyright (c) 2012 Florent Jaby
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