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

Swiss Army knife for Unix permissions

import{NODES_MAP}from"../../nodes.js";
import{serialize as serializeNumber}from"../number/serialize.js";

import{MINUS,NONE,OCTAL_BASE,PLUS}from"./constants.js";


export const serialize=(nodes)=>{
const operator=serializeOperator({nodes});
const string=serializeInteger({operator,nodes});
const octal=`${operator}${string}`;
return octal
};



const serializeOperator=({nodes})=>{
if(!isPartial({nodes})){
return NONE
}

if(nodes.every(isAdded)){
return PLUS
}

if(nodes.every(isRemoved)){
return MINUS
}

return NONE
};

const isPartial=({nodes})=>
Object.keys(nodes).length!==Object.keys(NODES_MAP).length;

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

const isRemoved=({add})=>add===false;


const serializeInteger=({operator,nodes})=>{
const nodesA=serializeMinus({operator,nodes});
const integer=serializeNumber(nodesA);

const string=integer.
toString(OCTAL_BASE).
padStart(SERIALIZE_LENGTH,SERIALIZE_PAD);
return string
};

const SERIALIZE_LENGTH=4;
const SERIALIZE_PAD="0";


const serializeMinus=({operator,nodes})=>{
if(operator!==MINUS){
return nodes
}

return nodes.map((node)=>({...node,add:true}))
};