in share/server/mimeparse.js [90:117]
fitnessAndQualityParsed : function(mimeType, parsedRanges) {
var bestFitness = -1, bestFitQ = 0, target = this.parseMediaRange(mimeType);
var targetType = target[0], targetSubtype = target[1], targetParams = target[2];
for (var i=0; i < parsedRanges.length; i++) {
var parsed = parsedRanges[i];
var type = parsed[0], subtype = parsed[1], params = parsed[2];
if ((type == targetType || type == "*" || targetType == "*") &&
(subtype == targetSubtype || subtype == "*" || targetSubtype == "*")) {
var matchCount = 0;
for (var param in targetParams) {
if (param != 'q' && params[param] && params[param] == targetParams[param]) {
matchCount += 1;
}
}
var fitness = (type == targetType) ? 100 : 0;
fitness += (subtype == targetSubtype) ? 10 : 0;
fitness += matchCount;
if (fitness > bestFitness) {
bestFitness = fitness;
bestFitQ = params["q"];
}
}
};
return [bestFitness, parseFloat(bestFitQ)];
},