CODEWITHSUNDEEP
regex
Naguib Ihab
Naguib Ihab

Reputation: 4496

Regex (Do not include digit.digit)

This is a sample text i'm running my regex on:

DuraFlexHose Water 1/2" hex    300mm 30.00

I want to include everything and stop at the 30.00

So what I have in mind is something like [^\d*\.\d*]* but that's not working. What is the query that would help me acheive this?

Upvotes: 1

Views: 51

Answers (2)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626738

If you cannot use any CSV parser and are only limited to regex, I'd suggest 2 regexps.

This one can be used to grab every character from the beginning up to the first pattern of optional spaces + digits(s) + . + digit(s):

^([\s\S]*?)\s*\d+\.\d+

See demo

In case the float value is at the end of string, use a $ anchor (the end of string):

^([\s\S]*?)\s*\d+\.\d+$

See another demo

Note that [\s\S] matches any symbol, even a newline.

Regex breakdown:

  • ^ - Start of string
  • ([\s\S]*?) - (Capture group 1) any symbols, 0 or more, as few as possible otherwise, 3 from 30.45 will be captured)
  • \s* - 0 or more whitespace, as many as possible (so as to trim Group 1)
  • \d+\.\d+ - 1 or more digits followed by a period followed by 1 or more digits
  • $ - end of string.

If you plan to match any floats, like -.05, you will need to replace \d+\.\d+ with [+-]?\d*\.?\d+.

Here is how it can be used:

var str = 'DuraFlexHose Water 1/2" hex    300mm 300.00';
var res = str.match(/^([\s\S]*?)\s*\d+\.\d+/); 
if (res !== null) {
    document.write(res[1]);
}

Upvotes: 1

Kerwin
Kerwin

Reputation: 1212

See Demo

/.*(?=\d{2}\.\d{2})/
    .* matches any character (except newline)
        Quantifier: * Between zero and unlimited times, as many times as possible, giving back as needed [greedy]
    (?=\d{2}\.\d{2}) Positive Lookahead - Assert that the regex below can be matched
        \d{2} match a digit [0-9]
            Quantifier: {2} Exactly 2 times
        \. matches the character . literally
        \d{2} match a digit [0-9]
            Quantifier: {2} Exactly 2 times

Upvotes: 1

Related Questions