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comp.lang.ruby

how to match any character with ruby regexp?

Nanyang Zhan

4/27/2008 4:45:00 PM

I am writing a method to strip out <a> (the link tag) from input text,
and I use the gsub method to do the job:
>>str = "please vist <a href=""http://www.abc.com&q... title=""abc"">abc.com</a> for more info."
>>str.gsub(Regexp.new("<\/?a(.)*?>"), "")
>>=>"please vist abc.com for more info."

It seems work well, but I'm not confident that the (.)* will safelly
match all the characters inside a <a> tag, for example, what if there is
a new line?
So, for ruby regex, which symbol can be surely used to represent any
character of a string? Thanks.
--
Posted via http://www.ruby-....
2 Answers

Robert Klemme

4/27/2008 5:02:00 PM

0

On 27.04.2008 18:44, Nanyang Zhan wrote:
> I am writing a method to strip out <a> (the link tag) from input text,
> and I use the gsub method to do the job:
>>> str = "please vist <a href=""http://www.abc.com&q... title=""abc"">abc.com</a> for more info."
>>> str.gsub(Regexp.new("<\/?a(.)*?>"), "")
>>> =>"please vist abc.com for more info."
>
> It seems work well, but I'm not confident that the (.)* will safelly
> match all the characters inside a <a> tag, for example, what if there is
> a new line?

irb(main):004:0> "a\nb".match(/.+/).to_a
=> ["a"]
irb(main):005:0> "a\nb".match(/.+/m).to_a
=> ["a\nb"]

> So, for ruby regex, which symbol can be surely used to represent any
> character of a string? Thanks.

A dot.

robert

Nanyang Zhan

4/27/2008 5:20:00 PM

0

> irb(main):005:0> "a\nb".match(/.+/m).to_a
> => ["a\nb"]
>
Thank you for your help.
--
Posted via http://www.ruby-....