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        <h1><a href="index.html">All files</a> sync-reader.js</h1>
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                <span class="strong">88.89% </span>
                <span class="quiet">Statements</span>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">"use strict";
&nbsp;
let SyncReader = (module.exports = function (buffer) {
  this._buffer = buffer;
  this._reads = [];
});
&nbsp;
SyncReader.prototype.read = function (length, callback) {
  this._reads.push({
    length: Math.abs(length), // if length &lt; 0 then at most this length
    allowLess: length &lt; 0,
    func: callback,
  });
};
&nbsp;
SyncReader.prototype.process = function () {
  // as long as there is any data and read requests
  while (this._reads.length &gt; 0 &amp;&amp; this._buffer.length) {
    let read = this._reads[0];
&nbsp;
    <span class="missing-if-branch" title="else path not taken" >E</span>if (
      this._buffer.length &amp;&amp;
      (this._buffer.length &gt;= read.length || <span class="branch-2 cbranch-no" title="branch not covered" >read.allowLess)</span>
    ) {
      // ok there is any data so that we can satisfy this request
      this._reads.shift(); // == read
&nbsp;
      let buf = this._buffer;
&nbsp;
      this._buffer = buf.slice(read.length);
&nbsp;
      read.func.call(this, buf.slice(0, read.length));
    } else {
<span class="cstat-no" title="statement not covered" >      break;</span>
    }
  }
&nbsp;
  <span class="missing-if-branch" title="if path not taken" >I</span>if (this._reads.length &gt; 0) {
<span class="cstat-no" title="statement not covered" >    return new Error("There are some read requests waitng on finished stream");</span>
  }
&nbsp;
  if (this._buffer.length &gt; 0) {
    return new Error("unrecognised content at end of stream");
  }
};
&nbsp;</pre></td></tr></table></pre>

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