Rails - Sep 2009 - regular expression matching date, author and agency in string

Hello All,

I wanted regular expression for the following patterns like

Nauzer Bharucha, TNN 10 September 2009, 12:01am IST

IANS 3 September 2009, 02:57pm IST

regular expression should return
*date* in first group
*author* in second group
and *agency* in third group

for below pattern it should return
Nauzer Bharucha, TNN 10 September 2009, 12:01am IST

$1 = 10 September 2009
$2 = Nauzer Bharucha
$3 = TNN

In second case author is nil

Any ideas ?

Sandip

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Not to sound rude, but you should do it yourself. It will help you in your
programming career. Moreover, it''s not a rails related issue.

You can use Internet search for learning more about regex. This is first
result I got on Google: http://www.regular-expressions.info/reference.html

Thanks,
Abhinav

PS: Please don''t outsource your work to this mailing list, and if you
do,
please do tell us what all you tried.
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On Fri, Sep 11, 2009 at 5:06 PM, Sandip Ransing
<san2821-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hello All,
>
> I wanted regular expression for the following patterns like
>
> Nauzer Bharucha, TNN 10 September 2009, 12:01am IST
>
> IANS 3 September 2009, 02:57pm IST
>
> regular expression should return
> *date* in first group
> *author* in second group
> and *agency* in third group
>
> for below pattern it should return
> Nauzer Bharucha, TNN 10 September 2009, 12:01am IST
>
> $1 = 10 September 2009
> $2 = Nauzer Bharucha
> $3 = TNN
>
> In second case author is nil
>
> Any ideas ?
>
> Sandip
>
>
>
> >
>
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Hi --

On Fri, 11 Sep 2009, Sandip Ransing wrote:
> Hello All,
> 
> I wanted regular expression for the following patterns like
> 
> Nauzer Bharucha, TNN 10 September 2009, 12:01am IST
> 
> IANS 3 September 2009, 02:57pm IST
> 
> regular expression should return
> date in first group
> author in second group
> and agency in third group
> 
> for below pattern it should return
> Nauzer Bharucha, TNN 10 September 2009, 12:01am IST
> 
> $1 = 10 September 2009
> $2 = Nauzer Bharucha
> $3 = TNN
> 
> In second case author is nil
> 
> Any ideas ?
I''m in a "teaching to fish" mood :-)

If you''re not yet thinking in regex terms, you need to dissect and
describe your pattern, and then translate it into a regular
expression. Here''s a description, as I understand it.

     zero or one of
       (one or more non-comma characters)
       a comma
       one or more spaces
     (three uppercase letters)
     one or more spaces
     (one or more non-comma characters)

etc.

Also, note that you can''t choose which capture will be $1, $2, etc.
They are assigned strictly in the order in which the left parentheses
appear, left to right (unless you use (?:) to suppress inclusion of a
particular group).


David

-- 
David A. Black / Ruby Power and Light, LLC / http://www.rubypal.com
Ruby/Rails training, mentoring, consulting, code-review
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