Regex match string between two characters

Question

Let's say I have a string containing a filename that includes width and height.. eg.

"en/text/org-affiliate-250x450.en.gif"

how can I get only the "250" contained by '-' and 'x' and then the "450" containd by 'x' and '.' using regex?

I tried following this answer but with no luck. Regular Expression to find a string included between two characters while EXCLUDING the delimiters

@Utkanos I tried following this stackoverflow.com/questions/1454913/… but with no luck. — itdoesntwork
– itdoesntwork, Commented Aug 13, 2018 at 11:34

girijesh96 · Accepted Answer · 2018-08-13 11:39:05Z

3

If you are using R then you can try following solution

txt = "en/text/org-affiliate-250x450.en.gif"
x <- gregexpr("[0-9]+", txt) 
x2 <- as.numeric(unlist(regmatches(txt, x)))

answered Aug 13, 2018 at 11:39

girijesh96

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Paolo · Accepted Answer · 2018-08-13 11:41:15Z

1

Use a lookbehind and a lookahead:

(?<=-|x)\d+(?=x|\.)

(?<=-|x) Lookbehind for either a - or a x.
\d+ Match digits.
(?=x|\.) Lookahead for either a x or a ..

Try the regex here.

answered Aug 13, 2018 at 11:41

Paolo

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1 Comment

itdoesntwork Over a year ago

worked like a charm... thanks for the explanation too.

Chayim Friedman · Accepted Answer · 2018-08-13 11:42:33Z

1

Use the regex -(\d)+x(\d+)\.:

var str = 'en/text/org-affiliate-250x450.en.gif';
var numbers = /-(\d+)x(\d+)\./.exec(str);
numbers = [parseInt(numbers[1]), parseInt(numbers[2])];
console.log(numbers);

answered Aug 13, 2018 at 11:42

Chayim Friedman

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