Clash Royale CLAN TAG#URR8PPP

Parsing a templated string

So I have a string like this

const str = 'map("a")to("b");map("foo")to("bar");map("alpha")to("beta");'


I wanted to parse this string to generate a json something like

[id: 'a', map: 'b',
id: 'foo', map: 'bar',
id: 'alpha', map: 'beta']


I was wondering if regex is the best way to do this or if theres any utility lib I could leverage

2 Answers
2

Here's a regex that should work for your current case:

const str = 'map("a")to("b");map("foo")to("bar");map("alpha")to("beta");';

const res = str.split(";").map(e =>
const k = e.match(/map("(.+?)")to("(.+?)")/);
return k && k.length === 3 ? id: k[1], map: k[2] : null;
).filter(e => e);

console.log(res);

The idea is to split on semicolons (a lookaround could be used to handle cases when semicolons are part of your desired key/value), then map these pairs into the desired object format based on a regex that parses the map("")to("") format.

map

map("")to("")

I'm pretty sure there is a nice regex solution which is shorter and faster, but since i'm bad at regex i solve those things like that:

const str = 'map("a")to("b");map("foo")to("bar");map("alpha")to("beta");'

const result = str.split(';').map(e =>

const parts = e.substring(3).split('to').map(item => item.replace(/W/g, ''));

return
id: parts[0],
map: parts[1]
;
)
console.log(result);


id: "", map: undefined

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