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securebit-chat/node_modules/pngjs/coverage/lcov-report/parser.js.html
lockbitchat 0f8399ec88 feat(security,ui): self-host React deps, Tailwind, fonts; strict CSP; local QR; better selection state 
Replace CDN React/ReactDOM/Babel with local libs; remove Babel and inline scripts
Build Tailwind locally, add safelist; switch to assets/tailwind.css
Self-host Font Awesome and Inter (CSS + woff2); remove external font CDNs
Implement strict CSP (no unsafe-inline/eval; scripts/styles/fonts from self)
Extract inline handlers; move PWA scripts to external files
Add local QR code generation (qrcode lib) and remove api.qrserver.com
Improve SessionTypeSelector visual selection (highlighted background and ring)
Keep PWA working with service worker and offline assets
Refs: CSP hardening, offline-first, no external dependencies
2025-09-08 16:04:58 -04:00

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<!doctype html>
<html lang="en">
<head>
<title>Code coverage report for parser.js</title>
<meta charset="utf-8" />
<link rel="stylesheet" href="prettify.css" />
<link rel="stylesheet" href="base.css" />
<link rel="shortcut icon" type="image/x-icon" href="favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<style type='text/css'>
.coverage-summary .sorter {
background-image: url(sort-arrow-sprite.png);
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<body>
<div class='wrapper'>
<div class='pad1'>
<h1><a href="index.html">All files</a> parser.js</h1>
<div class='clearfix'>
<div class='fl pad1y space-right2'>
<span class="strong">90.57% </span>
<span class="quiet">Statements</span>
<span class='fraction'>144/159</span>
</div>
<div class='fl pad1y space-right2'>
<span class="strong">85.45% </span>
<span class="quiet">Branches</span>
<span class='fraction'>47/55</span>
</div>
<div class='fl pad1y space-right2'>
<span class="strong">100% </span>
<span class="quiet">Functions</span>
<span class='fraction'>20/20</span>
</div>
<div class='fl pad1y space-right2'>
<span class="strong">90.32% </span>
<span class="quiet">Lines</span>
<span class='fraction'>140/155</span>
</div>
</div>
<p class="quiet">
Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block.
</p>
</div>
<div class='status-line high'></div>
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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 constants = require("./constants");
let CrcCalculator = require("./crc");
&nbsp;
let Parser = (module.exports = function (options, dependencies) {
this._options = options;
options.checkCRC = options.checkCRC !== false;
&nbsp;
this._hasIHDR = false;
this._hasIEND = false;
this._emittedHeadersFinished = false;
&nbsp;
// input flags/metadata
this._palette = [];
this._colorType = 0;
&nbsp;
this._chunks = {};
this._chunks[constants.TYPE_IHDR] = this._handleIHDR.bind(this);
this._chunks[constants.TYPE_IEND] = this._handleIEND.bind(this);
this._chunks[constants.TYPE_IDAT] = this._handleIDAT.bind(this);
this._chunks[constants.TYPE_PLTE] = this._handlePLTE.bind(this);
this._chunks[constants.TYPE_tRNS] = this._handleTRNS.bind(this);
this._chunks[constants.TYPE_gAMA] = this._handleGAMA.bind(this);
&nbsp;
this.read = dependencies.read;
this.error = dependencies.error;
this.metadata = dependencies.metadata;
this.gamma = dependencies.gamma;
this.transColor = dependencies.transColor;
this.palette = dependencies.palette;
this.parsed = dependencies.parsed;
this.inflateData = dependencies.inflateData;
this.finished = dependencies.finished;
this.simpleTransparency = dependencies.simpleTransparency;
this.headersFinished = dependencies.headersFinished || function () {};
});
&nbsp;
Parser.prototype.start = function () {
this.read(constants.PNG_SIGNATURE.length, this._parseSignature.bind(this));
};
&nbsp;
Parser.prototype._parseSignature = function (data) {
let signature = constants.PNG_SIGNATURE;
&nbsp;
for (let i = 0; i &lt; signature.length; i++) {
if (data[i] !== signature[i]) {
this.error(new Error("Invalid file signature"));
return;
}
}
this.read(8, this._parseChunkBegin.bind(this));
};
&nbsp;
Parser.prototype._parseChunkBegin = function (data) {
// chunk content length
let length = data.readUInt32BE(0);
&nbsp;
// chunk type
let type = data.readUInt32BE(4);
let name = "";
for (let i = 4; i &lt; 8; i++) {
name += String.fromCharCode(data[i]);
}
&nbsp;
//console.log('chunk ', name, length);
&nbsp;
// chunk flags
let ancillary = Boolean(data[4] &amp; 0x20); // or critical
// priv = Boolean(data[5] &amp; 0x20), // or public
// safeToCopy = Boolean(data[7] &amp; 0x20); // or unsafe
&nbsp;
<span class="missing-if-branch" title="if path not taken" >I</span>if (!this._hasIHDR &amp;&amp; type !== constants.TYPE_IHDR) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("Expected IHDR on beggining"));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
&nbsp;
this._crc = new CrcCalculator();
this._crc.write(Buffer.from(name));
&nbsp;
if (this._chunks[type]) {
return this._chunks[type](length);
}
&nbsp;
<span class="missing-if-branch" title="if path not taken" >I</span>if (!ancillary) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("Unsupported critical chunk type " + name));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
&nbsp;
this.read(length + 4, this._skipChunk.bind(this));
};
&nbsp;
Parser.prototype._skipChunk = function (/*data*/) {
this.read(8, this._parseChunkBegin.bind(this));
};
&nbsp;
Parser.prototype._handleChunkEnd = function () {
this.read(4, this._parseChunkEnd.bind(this));
};
&nbsp;
Parser.prototype._parseChunkEnd = function (data) {
let fileCrc = data.readInt32BE(0);
let calcCrc = this._crc.crc32();
&nbsp;
// check CRC
if (this._options.checkCRC &amp;&amp; calcCrc !== fileCrc) {
this.error(new Error("Crc error - " + fileCrc + " - " + calcCrc));
return;
}
&nbsp;
if (!this._hasIEND) {
this.read(8, this._parseChunkBegin.bind(this));
}
};
&nbsp;
Parser.prototype._handleIHDR = function (length) {
this.read(length, this._parseIHDR.bind(this));
};
Parser.prototype._parseIHDR = function (data) {
this._crc.write(data);
&nbsp;
let width = data.readUInt32BE(0);
let height = data.readUInt32BE(4);
let depth = data[8];
let colorType = data[9]; // bits: 1 palette, 2 color, 4 alpha
let compr = data[10];
let filter = data[11];
let interlace = data[12];
&nbsp;
// console.log(' width', width, 'height', height,
// 'depth', depth, 'colorType', colorType,
// 'compr', compr, 'filter', filter, 'interlace', interlace
// );
&nbsp;
if (
depth !== 8 &amp;&amp;
depth !== 4 &amp;&amp;
depth !== 2 &amp;&amp;
depth !== 1 &amp;&amp;
depth !== 16
) {
this.error(new Error("Unsupported bit depth " + depth));
return;
}
if (!(colorType in constants.COLORTYPE_TO_BPP_MAP)) {
this.error(new Error("Unsupported color type"));
return;
}
<span class="missing-if-branch" title="if path not taken" >I</span>if (compr !== 0) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("Unsupported compression method"));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="missing-if-branch" title="if path not taken" >I</span>if (filter !== 0) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("Unsupported filter method"));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="missing-if-branch" title="if path not taken" >I</span>if (interlace !== 0 &amp;&amp; interlace !== 1) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("Unsupported interlace method"));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
&nbsp;
this._colorType = colorType;
&nbsp;
let bpp = constants.COLORTYPE_TO_BPP_MAP[this._colorType];
&nbsp;
this._hasIHDR = true;
&nbsp;
this.metadata({
width: width,
height: height,
depth: depth,
interlace: Boolean(interlace),
palette: Boolean(colorType &amp; constants.COLORTYPE_PALETTE),
color: Boolean(colorType &amp; constants.COLORTYPE_COLOR),
alpha: Boolean(colorType &amp; constants.COLORTYPE_ALPHA),
bpp: bpp,
colorType: colorType,
});
&nbsp;
this._handleChunkEnd();
};
&nbsp;
Parser.prototype._handlePLTE = function (length) {
this.read(length, this._parsePLTE.bind(this));
};
Parser.prototype._parsePLTE = function (data) {
this._crc.write(data);
&nbsp;
let entries = Math.floor(data.length / 3);
// console.log('Palette:', entries);
&nbsp;
for (let i = 0; i &lt; entries; i++) {
this._palette.push([data[i * 3], data[i * 3 + 1], data[i * 3 + 2], 0xff]);
}
&nbsp;
this.palette(this._palette);
&nbsp;
this._handleChunkEnd();
};
&nbsp;
Parser.prototype._handleTRNS = function (length) {
this.simpleTransparency();
this.read(length, this._parseTRNS.bind(this));
};
Parser.prototype._parseTRNS = function (data) {
this._crc.write(data);
&nbsp;
// palette
if (this._colorType === constants.COLORTYPE_PALETTE_COLOR) {
<span class="missing-if-branch" title="if path not taken" >I</span>if (this._palette.length === 0) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("Transparency chunk must be after palette"));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
<span class="missing-if-branch" title="if path not taken" >I</span>if (data.length &gt; this._palette.length) {
<span class="cstat-no" title="statement not covered" > this.error(new Error("More transparent colors than palette size"));</span>
<span class="cstat-no" title="statement not covered" > return;</span>
}
for (let i = 0; i &lt; data.length; i++) {
this._palette[i][3] = data[i];
}
this.palette(this._palette);
}
&nbsp;
// for colorType 0 (grayscale) and 2 (rgb)
// there might be one gray/color defined as transparent
if (this._colorType === constants.COLORTYPE_GRAYSCALE) {
// grey, 2 bytes
this.transColor([data.readUInt16BE(0)]);
}
if (this._colorType === constants.COLORTYPE_COLOR) {
this.transColor([
data.readUInt16BE(0),
data.readUInt16BE(2),
data.readUInt16BE(4),
]);
}
&nbsp;
this._handleChunkEnd();
};
&nbsp;
Parser.prototype._handleGAMA = function (length) {
this.read(length, this._parseGAMA.bind(this));
};
Parser.prototype._parseGAMA = function (data) {
this._crc.write(data);
this.gamma(data.readUInt32BE(0) / constants.GAMMA_DIVISION);
&nbsp;
this._handleChunkEnd();
};
&nbsp;
Parser.prototype._handleIDAT = function (length) {
if (!this._emittedHeadersFinished) {
this._emittedHeadersFinished = true;
this.headersFinished();
}
this.read(-length, this._parseIDAT.bind(this, length));
};
Parser.prototype._parseIDAT = function (length, data) {
this._crc.write(data);
&nbsp;
<span class="missing-if-branch" title="if path not taken" >I</span>if (
this._colorType === constants.COLORTYPE_PALETTE_COLOR &amp;&amp;
this._palette.length === 0
) {
<span class="cstat-no" title="statement not covered" > throw new Error("Expected palette not found");</span>
}
&nbsp;
this.inflateData(data);
let leftOverLength = length - data.length;
&nbsp;
if (leftOverLength &gt; 0) {
this._handleIDAT(leftOverLength);
} else {
this._handleChunkEnd();
}
};
&nbsp;
Parser.prototype._handleIEND = function (length) {
this.read(length, this._parseIEND.bind(this));
};
Parser.prototype._parseIEND = function (data) {
this._crc.write(data);
&nbsp;
this._hasIEND = true;
this._handleChunkEnd();
&nbsp;
if (this.finished) {
this.finished();
}
};
&nbsp;</pre></td></tr></table></pre>
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