/var/www/greso.tech/server/nsm/node_modules/pngjs/coverage/lcov-report/parser-sync.js.html (15603B)
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let hasSyncZlib = true;
let zlib = require("zlib");
let inflateSync = require("./sync-inflate");
Iif (!zlib.deflateSync) {
hasSyncZlib = false;
}
let SyncReader = require("./sync-reader");
let FilterSync = require("./filter-parse-sync");
let Parser = require("./parser");
let bitmapper = require("./bitmapper");
let formatNormaliser = require("./format-normaliser");
module.exports = function (buffer, options) {
Iif (!hasSyncZlib) {
throw new Error(
"To use the sync capability of this library in old node versions, please pin pngjs to v2.3.0"
);
}
let err;
function handleError(_err_) {
err = _err_;
}
let metaData;
function handleMetaData(_metaData_) {
metaData = _metaData_;
}
function handleTransColor(transColor) {
metaData.transColor = transColor;
}
function handlePalette(palette) {
metaData.palette = palette;
}
function handleSimpleTransparency() {
metaData.alpha = true;
}
let gamma;
function handleGamma(_gamma_) {
gamma = _gamma_;
}
let inflateDataList = [];
function handleInflateData(inflatedData) {
inflateDataList.push(inflatedData);
}
let reader = new SyncReader(buffer);
let parser = new Parser(options, {
read: reader.read.bind(reader),
error: handleError,
metadata: handleMetaData,
gamma: handleGamma,
palette: handlePalette,
transColor: handleTransColor,
inflateData: handleInflateData,
simpleTransparency: handleSimpleTransparency,
});
parser.start();
reader.process();
if (err) {
throw err;
}
//join together the inflate datas
let inflateData = Buffer.concat(inflateDataList);
inflateDataList.length = 0;
let inflatedData;
if (metaData.interlace) {
inflatedData = zlib.inflateSync(inflateData);
} else {
let rowSize =
((metaData.width * metaData.bpp * metaData.depth + 7) >> 3) + 1;
let imageSize = rowSize * metaData.height;
inflatedData = inflateSync(inflateData, {
chunkSize: imageSize,
maxLength: imageSize,
});
}
inflateData = null;
Iif (!inflatedData || !inflatedData.length) {
throw new Error("bad png - invalid inflate data response");
}
let unfilteredData = FilterSync.process(inflatedData, metaData);
inflateData = null;
let bitmapData = bitmapper.dataToBitMap(unfilteredData, metaData);
unfilteredData = null;
let normalisedBitmapData = formatNormaliser(bitmapData, metaData);
metaData.data = normalisedBitmapData;
metaData.gamma = gamma || 0;
return metaData;
};
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