How can you transfer values from one set of key/value pairs to keys of another?

Question

How can you transfer values from one set of key/value pairs to keys of another?

I am currently dealing with the outputs of a system within my organization that I do not have control over.

Here is a sample string:

let structure = 'LAWYER=|FIRM=|SUIT_DESCRIPTION=|DEF_COMMENT=|PLF_COMMENT=|';

This string continues on, but follows this pattern.

Now, there is another string similar to the first one, but with actual data assigned to it, like in this example:

let currentData = 'FIRM=Smith and Wesson LLP|SUIT_DESCRIPTION=It\'s a royal mess|PLF_COMMENT=some freeform text|LAWYER=Bob Smith';

It should be noted that not all elements from structure may necessarily be found in currentData, and the order might vary (if the sequence is crucial, I can ensure they match).

My goal is to extract every element present in currentData and populate the corresponding item in structure, if it exists. Alternatively, I can add any non-matching elements from structure into currentData, ideally maintaining the same order as in structure.

Based on the provided data, the desired outcome would be:

result = 'LAWYER=Bob Smith|FIRM=Smith and Wesson LLP|SUIT_DESCRIPTION=It\'s a royal mess|DEF_COMMENT=|PLF_COMMENT=some freeform text|';

I am not very experienced with JavaScript :(

I attempted various methods in JSFiddle using split() and match(), but it only resulted in confusion for me.

javascript arrays

Answer 1

Answer №1

// Function to transform a template into an array of keys
const getKeys = str => str.split('|').map(entry => entry.split('=')[0]);

// Function to convert data into an object
const toObj = str => Object.fromEntries(str.split('|').map(entry => entry.split('=')));

// Function to reconcile data with the template
const compile = (templateStr, dataStr) => {
  const keys = getKeys(templateStr);
  const data = toObj(dataStr);
  return keys.reduce((results, key) => {
    if(key) results.push([key, data[key] ?? '']);
    return results;
  }, []);
};

// Function to convert the results back into a string
const toString = data => data.map(entry => entry.join('=')).join('|') + '|';

// Test scenario
let template = 'LAWYER=|FIRM=|SUIT_DESCRIPTION=|DEF_COMMENT=|PLF_COMMENT=|';
let current = 'FIRM=Smith and Wesson LLP|SUIT_DESCRIPTION=It\'s a royal mess|PLF_COMMENT=some freeform text|LAWYER=Bob Smith';

console.log(toString(compile(template, current)));

Answer 2

// Function to transform a template into an array of keys
const getKeys = str => str.split('|').map(entry => entry.split('=')[0]);

// Function to convert data into an object
const toObj = str => Object.fromEntries(str.split('|').map(entry => entry.split('=')));

// Function to reconcile data with the template
const compile = (templateStr, dataStr) => {
  const keys = getKeys(templateStr);
  const data = toObj(dataStr);
  return keys.reduce((results, key) => {
    if(key) results.push([key, data[key] ?? '']);
    return results;
  }, []);
};

// Function to convert the results back into a string
const toString = data => data.map(entry => entry.join('=')).join('|') + '|';

// Test scenario
let template = 'LAWYER=|FIRM=|SUIT_DESCRIPTION=|DEF_COMMENT=|PLF_COMMENT=|';
let current = 'FIRM=Smith and Wesson LLP|SUIT_DESCRIPTION=It\'s a royal mess|PLF_COMMENT=some freeform text|LAWYER=Bob Smith';

console.log(toString(compile(template, current)));

How can you transfer values from one set of key/value pairs to keys of another?

Answer №1

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