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<h1>Code coverage report for <span class="entity">lib/readable_streambuffer.js</span></h1>
<h2>
Statements: <span class="metric">98.82% <small>(84 / 85)</small></span>
Branches: <span class="metric">94.34% <small>(50 / 53)</small></span>
Functions: <span class="metric">100% <small>(11 / 11)</small></span>
Lines: <span class="metric">100% <small>(83 / 83)</small></span>
Ignored: <span class="metric"><span class="ignore-none">none</span></span>
</h2>
<div class="path"><a href="../index.html">All files</a> » <a href="index.html">lib/</a> » readable_streambuffer.js</div>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">var stream = require("stream"),
constants = require("./constants"),
util = require("util");
var ReadableStreamBuffer = module.exports = function(opts) {
var that = this;
stream.Stream.call(this);
opts = opts || {};
var frequency = opts.hasOwnProperty("frequency") ? opts.frequency : constants.DEFAULT_FREQUENCY;
var chunkSize = opts.chunkSize || constants.DEFAULT_CHUNK_SIZE;
var initialSize = opts.initialSize || constants.DEFAULT_INITIAL_SIZE;
var incrementAmount = opts.incrementAmount || constants.DEFAULT_INCREMENT_AMOUNT;
var size = 0;
var buffer = new Buffer(initialSize);
var encoding = null;
this.readable = true;
this.writable = false;
var sendData = function() {
var amount = Math.min(chunkSize, size);
if (amount > 0) {
var chunk = null;
if(encoding) {
chunk = buffer.toString(encoding, 0, amount);
}
else {
chunk = new Buffer(amount);
buffer.copy(chunk, 0, 0, amount);
}
that.emit("data", chunk);
<span class="missing-if-branch" title="else path not taken" >E</span>if(amount < buffer.length)
buffer.copy(buffer, 0, amount, size);
size -= amount;
}
if(size === 0 && !that.readable) {
that.emit("end");
that.emit("close");
if (sendData && sendData.interval) {
clearInterval(sendData.interval);
sendData.interval = null;
}
}
};
this.size = function() {
return size;
};
this.maxSize = function() {
return buffer.length;
};
var increaseBufferIfNecessary = function(incomingDataSize) {
if((buffer.length - size) < incomingDataSize) {
var factor = Math.ceil((incomingDataSize - (buffer.length - size)) / incrementAmount);
var newBuffer = new Buffer(buffer.length + (incrementAmount * factor));
buffer.copy(newBuffer, 0, 0, size);
buffer = newBuffer;
}
};
this.put = function(data, encoding) {
<span class="missing-if-branch" title="if path not taken" >I</span>if(!that.readable) <span class="cstat-no" title="statement not covered" >return;</span>
var wasEmpty = size === 0;
if(Buffer.isBuffer(data)) {
increaseBufferIfNecessary(data.length);
data.copy(buffer, size, 0);
size += data.length;
}
else {
data = data + "";
var dataSizeInBytes = Buffer.byteLength(data);
increaseBufferIfNecessary(dataSizeInBytes);
buffer.write(data, size, encoding || "utf8");
size += dataSizeInBytes;
}
if (wasEmpty && size > 0) {
this.emit('readable')
}
if (!this.isPaused && !frequency) {
while (size > 0) {
sendData();
}
}
};
this.pause = function() {
this.isPaused = true;
<span class="missing-if-branch" title="else path not taken" >E</span>if(sendData && sendData.interval) {
clearInterval(sendData.interval);
delete sendData.interval;
}
};
this.resume = function() {
this.isPaused = false;
if(sendData && !sendData.interval && frequency > 0) {
sendData.interval = setInterval(sendData, frequency);
}
};
this.destroy = function() {
that.emit("end");
if(sendData.interval) clearInterval(sendData.interval);
sendData = null;
that.readable = false;
that.emit("close");
};
this.destroySoon = function() {
that.readable = false;
if (!sendData.interval) {
that.emit("end");
that.emit("close");
}
};
this.setEncoding = function(_encoding) {
encoding = _encoding;
};
this.resume();
};
util.inherits(ReadableStreamBuffer, stream.Stream);
</pre></td></tr>
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