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XML_SPLIT(1)		       User Contributed Perl Documentation		     XML_SPLIT(1)

	 xml_split - cut a big XML file into smaller chunks

       "xml_split" takes a (presumably big) XML file and split it in several smaller files. The
       memory used is the memory needed for the biggest chunk (ie memory is reused for each new

       It can split at a given level in the tree (the default, splits children of the root), or
       on a condition (using the subset of XPath understood by XML::Twig, so "section" or

       Each generated file is replaced by a processing instruction that will allow "xml_merge" to
       rebuild the original document. The processing instruction format is "<?merge subdocs=[01]
       :<filename> ?>"

       File names are <file>-<nb>.xml, with <file>-00.xml holding the main document.

       -l <level>
	   level to cut at: 1 generates a file for each child of the root, 2 for each grand child

	   defaults to 1

       -c <condition>
	   generate a file for each element that passes the condition

	   xml_split -c <section> will put each "section" element in its own file (nested
	   sections are handled too)

	   Note that at the moment this option is a lot slower than using "-l"

       -s <size>
	   generates files of (approximately) <size>. The content of each file is enclosed in a
	   new element ("xml_split::root"), so it's well-formed XML.  The size can be given in
	   bytes, Kb, Mb or Gb.

       -g <nb>
	   groups <nb> elements in a single file. The content of each file is enclosed in a new
	   element ("xml_split::root"), so it's well-formed XML.

       -b <name>
	   base name for the output, files will be named <base>-<nb><.ext>

	   <nb> is a sequence number, see below "--nb_digits" <ext> is an extension, see below

	   defaults to the original file name (if available) or "out" (if input comes from the
	   standard input)

       -n <nb>
	   number of digits in the sequence number for each file

	   if more digits than <nb> are needed, then they are used: if "--nb_digits 2" is used
	   and 112 files are generated they will be named "<file>-01.xml" to "<file>-112.xml"

	   defaults to 2

       -e <ext>
	   extension to use for generated files

	   defaults to the original file extension or ".xml"

       -i  use XInclude elements instead of Processing Instructions to mark where sub files need
	   to be included

       -v  verbose output

	   Note that this option can slow down processing considerably (by an order of magnitude)
	   when generating lots of small documents

       -V  outputs version and exit

       -h  short help

       -m  man (requires pod2text to be in the path)

	 xml_split foo.xml	       # split at level 1
	 xml_split -l 2 foo.xml        # split at level 2
	 xml_split -c section foo.xml  # a file is generated for each section element
				       # nested sections are split properly

       XML::Twig, xml_merge

       optimize the code
	   any idea welcome! I have already implemented most of what I thought would improve

       provide other methods that PIs to keep merge information
	   XInclude is a good candidate (alpha support added in 0.04).

	   using entities, which would seem the natural way to do it, doesn't work, as they make
	   it impossible to have both the main document and the sub docs to be well-formed if the
	   sub docs include sub-sub docs (you can't have entity declarations in an entity)

       Michel Rodriguez <mirod@cpan.org>

       This tool is free software; you can redistribute it and/or modify it under the same terms
       as Perl itself.

perl v5.16.3				    2012-05-17				     XML_SPLIT(1)

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