Qt and regular expressions

Question

I would like to write simple regexp with Qt QRegExp

I want to fetch all substring of a Qstring with table(i, d), without the quotes, with i "hard written" and d representing any integer. And then using cap, to retrieve value for d. I propose

 qREgExp reg ( "table(i,\\s*(\\d+)\\s*)") ;

I cherrish the hope that then

 reg.cap(2)

gives me the d in question here.

How would you put it?

Ωmega · Accepted Answer · 2012-10-17 13:16:31Z

2

Try to use

qREgExp reg ( "\\btable\\(i,\\s*(\\d+)\\s*\\)" );

with

reg.cap(1)

answered Oct 17, 2012 at 13:16

Ωmega

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4 Comments

Spidey Over a year ago

Exactly. The parenthesis on the table "call" aren't escaped, and then they are parsed as operators of the regular expression. Escaping them makes them part of the text to match.

kiriloff Over a year ago

@Spidey thanks!! then "\\btable\\(i,\\s*(\\.+)\\s*\\)" should match data(i,1), isnt it ? it is not.

kiriloff Over a year ago

@Spidey maybe this is better "\\btable\\(i,\\s*(.+)\\s*\\)" !? this is matching, but i cannot retrieve the . with cap

Spidey Over a year ago

Try "\\btable\(i,([^\)]+)\)".

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