On Thu, Oct 26, 2006 at 08:15:31PM +0200, Cindy-Jane Armbruster wrote:
> In one of my projects I have named and numbered "items" (in this case
> it's definitions, propositions, and remarks on a website on
> mathematics). The numbering is consecutive, according to a certain
> system. I have now added an "item" - and need the numbers of the
> items following the new item increment by one.
>
> Example of original data:
> definition_b.12
> remark_b.13
> remark_b.14
> proposition_b.15
>
> Here is as far that I got with my grep find/replace:
>
> ([ngzk])([_ ])([bB])\.14
> \1\2\3\.15
>
> The problem is, I currently have 40 "items" - which translates into
> up to 40 find/replaces - which is a lot of work by hand. I'm sure
> there must be a smarter way. But I'm new to Grep, and BBedit - so,
> I'm hoping someone here might be able to help me?
GREP's not well suited for this, because you can't put expressions in the
replacement. A filter would be easier, such as this one in Perl, which
does allow expressions in the replacement:
#!/usr/local/bin/perl -w
use strict;
while (<>) {
s/([ngzk][_ ][bB]\.)(\d+)/$1 . ($2 + 1)/e;
print;
}
__END__
Save that as a filter. Then, select just the lines you want to update and
run the filter.
You could also write it to filter and renumber the whole document at once:
#!/usr/local/bin/perl -w
use strict;
my $num = 0;
while (<>) {
s/([ngzk][_ ][bB]\.)\d+/$1 . ++$num/e;
print;
}
__END__
HTH,
Ronald
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