CODEWITHSUNDEEP
regexawk
user2753544
user2753544

Reputation: 23

Problem in matching string with awk regex

I´m trying to match the following sentence

ldcValue = 0.00

The regex i´m trying to create must match:

I have tried this regex:

if(match(line, "/(\<(ldc)\w*)(\t| )+(\=|>|<|>=|<=)\(\t| )*(\<(ldc)\w*)|\w*") > 0){ 
        print "match: "substr($0, RSTART, RLENGTH);
    }

but didn't match.

Input examples

ldcValue > 0.00
ldcValue = 0
ldblValue = ad_value / llDias
ldcValue = ad_Value * ldblFator

Expected output matched:

   ldcValue > 0.00
   ldcValue = 0

What is the correct regex?

Thanks.

Upvotes: 0

Views: 69

Answers (1)

tripleee
tripleee

Reputation: 189317

In Awk, put either quotes or slashes around your regex, but not both. Your current attempt requires a literal slash before the first ldc.

Also, traditional Awk does not typically support \w which is a Perl extension.

Try

/\<ldc[A-Za-z0-9_]+[ \t]*([><]=|[<>=])[ \t]*(ldc[A-Za-z0-9_]|[0-9]+(\.[0-9]*)?d?)/

Your problem statement vaguely sounds like you need a proper parser, not just a regex, though.

Upvotes: 1

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