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        <h1><a href="index.html">All files</a> parser-sync.js</h1>
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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 hasSyncZlib = true;
let zlib = require("zlib");
let inflateSync = require("./sync-inflate");
<span class="missing-if-branch" title="if path not taken" >I</span>if (!zlib.deflateSync) {
<span class="cstat-no" title="statement not covered" >  hasSyncZlib = false;</span>
}
let SyncReader = require("./sync-reader");
let FilterSync = require("./filter-parse-sync");
let Parser = require("./parser");
let bitmapper = require("./bitmapper");
let formatNormaliser = require("./format-normaliser");
&nbsp;
module.exports = function (buffer, options) {
  <span class="missing-if-branch" title="if path not taken" >I</span>if (!hasSyncZlib) {
<span class="cstat-no" title="statement not covered" >    throw new Error(</span>
      "To use the sync capability of this library in old node versions, please pin pngjs to v2.3.0"
    );
  }
&nbsp;
  let err;
  function handleError(_err_) {
    err = _err_;
  }
&nbsp;
  let metaData;
  function handleMetaData(_metaData_) {
    metaData = _metaData_;
  }
&nbsp;
  function handleTransColor(transColor) {
    metaData.transColor = transColor;
  }
&nbsp;
  function handlePalette(palette) {
    metaData.palette = palette;
  }
&nbsp;
  function handleSimpleTransparency() {
    metaData.alpha = true;
  }
&nbsp;
  let gamma;
  function handleGamma(_gamma_) {
    gamma = _gamma_;
  }
&nbsp;
  let inflateDataList = [];
  function handleInflateData(inflatedData) {
    inflateDataList.push(inflatedData);
  }
&nbsp;
  let reader = new SyncReader(buffer);
&nbsp;
  let parser = new Parser(options, {
    read: reader.read.bind(reader),
    error: handleError,
    metadata: handleMetaData,
    gamma: handleGamma,
    palette: handlePalette,
    transColor: handleTransColor,
    inflateData: handleInflateData,
    simpleTransparency: handleSimpleTransparency,
  });
&nbsp;
  parser.start();
  reader.process();
&nbsp;
  if (err) {
    throw err;
  }
&nbsp;
  //join together the inflate datas
  let inflateData = Buffer.concat(inflateDataList);
  inflateDataList.length = 0;
&nbsp;
  let inflatedData;
  if (metaData.interlace) {
    inflatedData = zlib.inflateSync(inflateData);
  } else {
    let rowSize =
      ((metaData.width * metaData.bpp * metaData.depth + 7) &gt;&gt; 3) + 1;
    let imageSize = rowSize * metaData.height;
    inflatedData = inflateSync(inflateData, {
      chunkSize: imageSize,
      maxLength: imageSize,
    });
  }
  inflateData = null;
&nbsp;
  <span class="missing-if-branch" title="if path not taken" >I</span>if (!inflatedData || !inflatedData.length) {
<span class="cstat-no" title="statement not covered" >    throw new Error("bad png - invalid inflate data response");</span>
  }
&nbsp;
  let unfilteredData = FilterSync.process(inflatedData, metaData);
  inflateData = null;
&nbsp;
  let bitmapData = bitmapper.dataToBitMap(unfilteredData, metaData);
  unfilteredData = null;
&nbsp;
  let normalisedBitmapData = formatNormaliser(bitmapData, metaData);
&nbsp;
  metaData.data = normalisedBitmapData;
  metaData.gamma = gamma || 0;
&nbsp;
  return metaData;
};
&nbsp;</pre></td></tr></table></pre>

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