Drafts Directory: Total

Action

Posted by dchar, Last update about 6 years ago

Add lines of a draft.

Action directory: https://actions.getdrafts.com/a/1Pu

This action adds up each line of a draft and displays the total. It’s handy for those cases in between “I should use a calculator” and “I should use a spreadsheet”. Some use cases: adding up receipts, keeping track of per diem, splitting a bill.

Numbers can be integers or decimal:

10
3.75

Text, and everything after it, is ignored which is handy for adding notes:

# Twelve Days of Christmas

3  French hens
2  Turtle dovers
1  Partridge in a pear tree

Simple calculations can be done on each line:

5.00 * 2   multiplication
4.25 x 3   quicker than find multiply
100 / 2    division

Trusted member

Install

Steps

script

// Evaluate lines and accumulate the total

(() => {

  const lines = () => {
    return editor.getText().split('\n');
  };

  const sum = (acc, l) => {
    try {
      l = l.replace(/\$/g, "");

      // Convert `2x3` to `2*3`
      l = l.replace(/[xX]+/g, "*");
  
      // Text to comments before eval
      l = l.replace(/[a-zA-Z]/,"//");

      l = l.replace(/#/,"//");
  
      let f = eval(l);
      if (!Number.isFinite(f)) {
        f = parseFloat(l);
      }

      if (Number.isFinite(f)) {
        acc += f;
      }
    }
    catch(e) {
    }

    return acc;
  };

  const t = lines().reduce(sum, 0);
  alert("total: " + t.toFixed(2));
})();

Options

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