Forum: Ruby Substituting with a find counter . . .

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Peter B. (Guest)
on 2006-05-23 18:01
In this gsub block, I'd like to save the searched parenthetical data,
indicated by (.*) in line 2. The script works, but, instead of getting
the parenthetical data, I'm getting "$1." Very literal, but, not what I
want. What am I doing wrong?

Thanks.
Peter


1 counter = 0
2  contents.gsub!(/^%%Page:(.*)[0-9]{1,5}$/)  do |match|
3  counter += 1
4  "%%Page: $1 #{counter}"
Robert K. (Guest)
on 2006-05-23 18:16
(Received via mailing list)
2006/5/23, Peter B. <removed_email_address@domain.invalid>:
> In this gsub block, I'd like to save the searched parenthetical data,
> indicated by (.*) in line 2. The script works, but, instead of getting
> the parenthetical data, I'm getting "$1." Very literal, but, not what I
> want. What am I doing wrong?

You're missing a hash which leads to your $1 being used literally:

> 1 counter = 0
> 2  contents.gsub!(/^%%Page:(.*)[0-9]{1,5}$/)  do |match|
> 3  counter += 1
> 4  "%%Page: $1 #{counter}"

make that last line

"%%Page: #$1 #{counter}"

Kind regards

robert
Jim W. (Guest)
on 2006-05-23 18:23
Peter B. wrote:
> In this gsub block, I'd like to save the searched parenthetical data,
> indicated by (.*) in line 2. The script works, but, instead of getting
> the parenthetical data, I'm getting "$1." Very literal, but, not what I
> want. What am I doing wrong?
>
> Thanks.
> Peter
>
>
> 1 counter = 0
> 2  contents.gsub!(/^%%Page:(.*)[0-9]{1,5}$/)  do |match|
> 3  counter += 1
> 4  "%%Page: $1 #{counter}"

"%%Page: #{$1} #{counter}"

should help.

Also, the .* is gobbling up any digits except the last.  You probably
want a space between .* and [0-9], or make the . match non-greedy with
.*?.  Since your replacement string has a space, I'm guessing that's
what you want.

-- Jim W.
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