Regular expression question

[akrishmohan]

Hi

I am trying to determine the regular exp for finding a comma separated integer pattern with in a string

e.g
Hello++1,2,3++World

There could be just integer (ofcourse without any comma at the end) or many integers (comma separated)>

Let me know.

Thanks
K

 

[travs69]

Does is always start/end with +++ or is that just an example?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;

 

[akrishmohan]

Just to simplify things I would want to match only Comma Separated Integers. I want to match just one integer (with no comma) and I DONT want to match something like this 1,2,3,

This is the summary

1,2,3,..n - ok
1,2,3,...n, - NOT OK
1 - ok

Hope this is clear

Thanks
K

 

[travs69]

Kinda.. do you have have any real data you can show us?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;

 

[akrishmohan]

Below is the right data

12,43,45 - MATCH
12,34,56,77 - MATCH
112,23, - NO MATCH
11,3,45,66,77,88, - NO MATCH
90 - MaTCH
39, - NO MATCH

38,,45,9 - NO MATCH

Thx
K

 

[prex1]

Your request is not yet very clear:
-do you just want to determine whether your string is acceptable (answer:true-false)
-do you want to also extract the integers when the string is OK?
-taking your last request, are you sure that the strings contain only figures and commas (and no plus or minus I suppose, what about end of line?)
Assuming yes-no-yes this is a possible regexp (the string being in [tt]$_[/tt]):
[tt]!/,,|,$/;[/tt]

Franco

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[tchatzi]

I'm not sure if I understood you correctly....
if you file "myfile.txt" looks like this

Hello++12,43,45++World
Hello++12,34,56,77++World
Hello++112,23,++World
Hello++11,3,45,66,77,88,++World
Hello++90++World
Hello++39,++World
Hello++38,,45,9++World

then maybe this is what you need

open (FILE,"myfile.txt");
while (<FILE>) {
    $foo = $_;
    if ( $foo =~ /(\d{1,},?([^,]\d{1,}|,)*)/ ) {
        unless  ( $1 =~ /,$/ ) {
            print "$1\n";
        }
    }
}
close FILE;

this will print

12,43,45
12,34,56,77
90

``The wise man doesn't give the right answers,
he poses the right questions.''
TIMTOWTDI

 

[akrishmohan]

Lets forget about the presence of Hello World in the string.

I have a request string that I need to validate on the server. The request string (ideally) should be comma separated positive integers. If the string is NOT properly formatted, I reject the string. So yes, its a true or false situation.

For reference below is a list of valid strings :

12,43,45 - MATCH - return true
12,34,56,77 - MATCH - return true
112,23, - NO MATCH - return false
11,3,45,66,77,88, - NO MATCH return false
90 - MaTCH return true
39, - NO MATCH return false

38,,45,9 - NO MATCH return false

Hope this helps
Thanks
K

 

[brigmar]

while( <DATA> ) {
	print /^\d+(,\d+)*$/ ? "MATCH " : "NO MATCH ";
	print;
}

__DATA__
12,43,45
12,34,56,77
112,23,
11,3,45,66,77,88,
90
39,
38,,45,9