Is there something like Regexp#match_all

ruby-talk
1

Hi,

is there a possibility to return all the matches of a regexp? or in
other words is there a way to apply a block to all matches at once?
Something like String#gsub but where I can specifiy what to do with the
matches...

Thanks
Andi

···

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Posted via http://www.ruby-forum.com/.

2

These things are actually two different things.

1. Look at String#scan
2. Look at String#gsub with the block form and use Regexp::last_match
(it's a thread-local value, IIRC).

-austin

···

On 12/11/06, Andi Schacke <memberships.andi@gmail.com> wrote:

is there a possibility to return all the matches of a regexp? or in
other words is there a way to apply a block to all matches at once?
Something like String#gsub but where I can specifiy what to do with the
matches...

--
Austin Ziegler * halostatue@gmail.com * http://www.halostatue.ca/
               * austin@halostatue.ca * You are in a maze of twisty little passages, all alike. // halo • statue
               * austin@zieglers.ca

3

What exactly do you want to do with matches?

  robert

···

On 11.12.2006 22:26, Andi Schacke wrote:

is there a possibility to return all the matches of a regexp? or in
other words is there a way to apply a block to all matches at once?
Something like String#gsub but where I can specifiy what to do with the
matches...

4

Robert Klemme wrote:

···

On 11.12.2006 22:26, Andi Schacke wrote:

is there a possibility to return all the matches of a regexp? or in
other words is there a way to apply a block to all matches at once?
Something like String#gsub but where I can specifiy what to do with the
matches...

What exactly do you want to do with matches?

  robert

I'd like to build a small web-tool for myself to highlight all the
matches of a regexp against a specified string (e.g. the matches should
be in a different color). But I think I found a solution:

source_string.gsub(regexp) {|match| "<span
style=\"color:red;\">#{match}</span>"}

--
Posted via http://www.ruby-forum.com/\.

5

You don't really need the block form for such a simple replacement. This is the same thing:

source_string.gsub(regexp, '<span color="red">\&</span>')

James Edward Gray II

···

On Dec 11, 2006, at 4:50 PM, Andi Schacke wrote:

Robert Klemme wrote:

On 11.12.2006 22:26, Andi Schacke wrote:

is there a possibility to return all the matches of a regexp? or in
other words is there a way to apply a block to all matches at once?
Something like String#gsub but where I can specifiy what to do with the
matches...

What exactly do you want to do with matches?

  robert

I'd like to build a small web-tool for myself to highlight all the
matches of a regexp against a specified string (e.g. the matches should
be in a different color). But I think I found a solution:

source_string.gsub(regexp) {|match| "<span
style=\"color:red;\">#{match}</span>"}

6

... and in fact more efficient IIRC.

  robert

···

On 11.12.2006 23:56, James Edward Gray II wrote:

On Dec 11, 2006, at 4:50 PM, Andi Schacke wrote:

I'd like to build a small web-tool for myself to highlight all the
matches of a regexp against a specified string (e.g. the matches should
be in a different color). But I think I found a solution:

source_string.gsub(regexp) {|match| "<span
style=\"color:red;\">#{match}</span>"}

You don't really need the block form for such a simple replacement. This is the same thing:

source_string.gsub(regexp, '<span color="red">\&</span>')