unix-permissions/build/src/types/octal/parse.js

Swiss Army knife for Unix permissions

import{parse as parseNumber}from"../number/parse.js";

import{EQUAL,MINUS,OCTAL_BASE,PLUS}from"./constants.js";
import{tokenize}from"./tokenize.js";


export const parse=(octal,category)=>{
const{operator,string}=tokenize(octal);

if(string===undefined){
return
}

const integer=octalToDecimal({string});

const nodes=parseNumber(integer);

const nodesA=parseOperator[operator]({nodes,category});
return nodesA
};


const octalToDecimal=({string})=>Number.parseInt(string,OCTAL_BASE);

const parsePlus=({nodes})=>nodes.filter(hasAdd);

const parseMinus=({nodes})=>nodes.filter(hasAdd).map(invertAdd);

const invertAdd=(node)=>({...node,add:false});

const hasAdd=({add})=>add===true;


const parseEqual=({nodes})=>nodes;

const parseOperator={
[PLUS]:parsePlus,
[MINUS]:parseMinus,
[EQUAL]:parseEqual
};