[ILUG] Multi line regular expression help

[Kingsley G. Morse Jr.]

Hi Marcus,

Here's a sample script that may help.

It echos your data into a pipe of two seds.

Maybe you can quickly and easily see it work by
using your mouse to copy and paste it into a
command line.



#!/bin/bash

echo "<tag>(FR) text

<tag> - (FR) text

<tag> (FR)
text

<tag>
(FR) text

<tag>
 - (FR) text

<tag>
othertext - (FR) text

<tag>othertext - (FR) text

<tag>othertext -
(FR) text" | sed -E -n '/<tag>/{N; s/\n//; s/<tag>(.*)\(FR\)/<tag language="FR" attribute=\1>/g;p;}' | sed 's/> \?/>\n/g'



It seems to me that useful examples are at

    http://codesnippets.joyent.com/posts/show/2111

I hope that helps,
Kingsley

On 12/01/11 18:25, Marcus Furlong wrote:
> Hi,
> 
> I'm trying to do a multine regexp that matches the following expressions:
> 
> <tag>(FR) text
> 
> <tag> - (FR) text
> 
> <tag> (FR)
> text
> 
> <tag>
> (FR) text
> 
> <tag>
>  - (FR) text
> 
> <tag>
> othertext - (FR) text
> 
> <tag>othertext - (FR) text
> 
> <tag>othertext -
> (FR) text
> 
> and replaces them with
> 
> <tag language="FR">
> text
> 
> As a bonus, if "othertext" exists, I'd also like to put that into an attribute.
> 
> I have tried egrep, perl and sed but I cannot seem to get it. I can
> match the single line ones fine, but not the multi line ones. None of
> the examples I've seen online help me, apart from removing newlines
> altogether, but I cannot do that, as further processing depends on the
> newlines being there.
> 
> Can anyone give some suggestions for doing such a multi-line regexp?
> 
> Thanks,
> Marcus.
> -- 
> Marcus Furlong
> -- 
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