GT2/GT2-Android/node_modules/logfmt/lib/streaming.js

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var split = require('split')
var through = require('through');
var PassThrough = require('stream').PassThrough;
//returns a stream that splits and parses logfmt into objects
exports.streamParser = function(options){
var options = options || {};
var streamParser = new PassThrough();
var self = this;
var logfmtStream = through(function(line){
if(line !== '') this.queue(self.parse(line))
})
// When a source stream is piped to us, undo that pipe, and save
// off the source stream piped into our internally managed streams.
streamParser.on('pipe', function(source) {
if(source.unpipe) source.unpipe(this);
this.transformStream = source.pipe(split()).pipe(logfmtStream);
});
// When we're piped to another stream, instead pipe our internal
// transform stream to that destination.
streamParser.pipe = function(destination, options) {
return this.transformStream.pipe(destination, options);
};
return streamParser;
}
// returns a stream that stringifies objects
exports.streamStringify = function(options){
var self = this;
var options = options || {};
if(options.hasOwnProperty('delimiter')){
var delim = options.delimiter;
}else{
var delim = "\n";
}
return through(function(data){
this.queue(self.stringify(data) + delim)
}, function(){
this.queue(null)
})
}