Search and Replace in XML

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: Search and Replace in XML by toolic (Bishop) on Sep 14, 2009 at 15:21 UTC
XML::Twig should be suitable for your problem. It will be well worth your time to work through the examples in the tutorial. In the future, it would be easier to understand your question if you posted your XML code inside 'code' tags. See Writeup Formatting Tips	[reply]
Re^2: Search and Replace in XML by Anonymous Monk on Sep 14, 2009 at 16:36 UTC
but having something like this: `<DOC> <S Sid='1'> <REF ID='1' TYPE='ANAPHOR' EXT='NAME'>he</REF>is hardworking guy. </S> <S Sid='2'> <REF ID='2' TYPE='ANAPHOR' EXT='FAMILY'>he</REF> </S> </DOC>` [download] how can I replace the REF value with it's @EXT value using XML::TWIG and output as the same xml just replacing those for all documents? Thanks again for your clue.	[reply] [d/l]
Re^3: Search and Replace in XML by toolic (Bishop) on Sep 14, 2009 at 17:02 UTC
Set up a Twig handler to find all the REF elements. Parse the XML file. In the handler routine, get the text of the EXT attribute. Set the text of the REF element to be the text of the EXT attribute. Print out the modified XML. After you have written some code, if you are still having trouble, post your code along with the expected output.	[reply]
Re^4: Search and Replace in XML by Anonymous Monk on Sep 15, 2009 at 11:07 UTC
Re^5: Search and Replace in XML by toolic (Bishop) on Sep 16, 2009 at 00:35 UTC
Some notes below your chosen depth have not been shown here
Re: Search and Replace in XML by Jenda (Abbot) on Sep 14, 2009 at 17:12 UTC
Looks like a perfect task for XML::Rules in the filter mode. Create a new XML::Rules object with `style => 'filter'` and a custom rule for <REF> tags replacing the _content by the value of the EXT attribute and use the filter() or filterfile() method. Jenda Enoch was right! Enjoy the last years of Rome.	[reply] [d/l]
Re^2: Search and Replace in XML by Anonymous Monk on Sep 14, 2009 at 17:39 UTC
seems easy using the rules. but never worked with XML::RULES, would it be simple to learn fast?	[reply]
Re^3: Search and Replace in XML by Jenda (Abbot) on Sep 14, 2009 at 22:50 UTC
Depends. If you are used to passing subroutine references around or to a declarative style of programming it should be a no-brainer. If you are set on the procedural thinking, it takes some brain rewiring. In this particular case the implementation really is simple. You load the module, you define the object with just a single custom rule that copies the `$_[1]->{EXT}` to `$_[1]->{_content}` and returns the `$_[0] => $_[1]` pair and then call the filter() or filterfile() method. It's all documented. Try and ask if you do not understand something or if something does something unexpected. Jenda Enoch was right! Enjoy the last years of Rome.	[reply] [d/l] [select]