Splitting via regex is duplicating arguments NodeJs

Pixel445 0
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I'm splitting code via regular expressions and it's doing (sort of) the right thing... until the string ends. Would this be a problem with my regex? If so, how would I fix it?

Code:

let args = line.split(/\s(?=(([^"]*"){2})*[^"]*$)/);
console.log("LINE: "+line)
console.log("SPLIT: "+JSON.stringify(args))

Output:

LINE: var String: test = "Hello"
SPLIT: ["var","String: test = \"Hello\"","Hello\"","String:","test = \"Hello\"","Hello\"","test","= \"Hello\"","Hello\"","=","\"Hello\"","Hello\"","\"Hello\""]

Expected Output:

LINE: var String: test = "Hello"
SPLIT: ["var", "String:", "test", "=", "\"Hello\""]
regex node.js javascript
1 Answers

I would use String.match(regex) not String.split(regex). I would design a regex that has the following characteristics:

  • Capture =, or
  • Capture quoted string, or
  • Capture unquoted alphabet string
  • And add an optional ':' suffix

e.g.

let line = `var String: test = "Hello"`;
let m = line.match(/(=|"[^"]*"|\w+):?/g);
console.log(m);
// [ "var", "String:", "test", "=", "\"Hello\"" ]

Stephen Quan0
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