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<h1><a href="index.html">All files</a> parser-sync.js</h1>
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<span class="strong">93.33% </span>
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<span class='fraction'>11/14</span>
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<span class='fraction'>8/8</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 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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