CyberChef/src/core/operations/SetIntersection.mjs

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import Utils from "../Utils";
import Operation from "../Operation";
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/**
* Set Intersection operation
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*/
class SetIntersection extends Operation {
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/**
* Set Intersection constructor
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*/
constructor() {
super();
this.name = "Set Intersection";
this.module = "Default";
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this.description = "Get the intersection of two sets";
this.inputType = "string";
this.outputType = "string";
this.args = [
{
name: "Sample delimiter",
type: "binaryString",
value: Utils.escapeHtml("\\n\\n")
},
{
name: "Item delimiter",
type: "binaryString",
value: ","
},
];
}
/**
* Validate input length
* @param {Object[]} sets
* @throws {Error} if not two sets
*/
validateSampleNumbers(sets) {
if (!sets || (sets.length !== 2)) {
throw "Incorrect number of sets, perhaps you need to modify the sample delimiter or add more samples?";
}
}
/**
* Run the intersection operation
* @param input
* @param args
*/
run(input, args) {
[this.sampleDelim, this.itemDelimiter] = args;
const sets = input.split(this.sampleDelim);
try {
this.validateSampleNumbers(sets);
} catch (e) {
return e;
}
return Utils.escapeHtml(this.runIntersect(...sets.map(s => s.split(this.itemDelimiter))));
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}
/**
* Get the intersection of the two sets.
*
* @param {Object[]} a
* @param {Object[]} b
* @returns {Object[]}
*/
runIntersect(a, b) {
return a
.filter((item) => {
return b.indexOf(item) > -1;
})
.join(this.itemDelimiter);
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}
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}
export default SetIntersection;