compact stringify

compact_stringify.js

const p=require('./protocol.json');


const json_string_of_jarray=(a,lb,t) => '['+(lb ? "\n" : "")+(a.map((v,i) => {
  const withoutBreak=(lb ? t+"  " : "")+json_string_of_jvalue(v,false);
  return withoutBreak.length+(i!=(a.length-1) ? 1 : 0)>80 && lb ? (lb ? t+"  " : "")+json_string_of_jvalue(v,lb,t+"  ") : withoutBreak;
})).join(lb ? ",\n" :  ", ")+(lb ? "\n"+t : "")+']';

const json_string_of_jobject=(o,lb,t) => '{'+(lb ? "\n" : "")+Object.keys(o).map((k,i) => {
 const withoutBreak=(lb ? t+'  ' : '')+'"'+k+'": '+json_string_of_jvalue(o[k],false);
 return withoutBreak.length+(i!=(o.length-1) ? 1 : 0)>80 && lb ? (lb ? t+'  ' : '')+'"'+k+'": '+json_string_of_jvalue(o[k],true,t+"  ") : withoutBreak;
}).join(lb ? ",\n" : ", ")+(lb ? "\n"+t : "")+'}';

const json_string_of_jvalue=(v,lb=true,t="") => {
  if(v===null)
    return "NULL";
  if(v.constructor===Array)
    return json_string_of_jarray(v,lb,t);
  if(typeof v === 'object')
    return json_string_of_jobject(v,lb,t);
  if(typeof v === 'string')
    return '"'+v+'"';
  if(typeof v === 'boolean')
    return v ? "true" : "false";
  if(typeof v === 'number')
    return v;
  throw Error("unexpected type !");
}

console.log(json_string_of_jvalue(p));