Splitting huge XML Files into fixsized wellformed parts


 
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Old 03-17-2008
Splitting huge XML Files into fixsized wellformed parts

Hi,

I need to split xml-files with sizes greater than 2 gb into smaler chunks. As I dont want to end up with billions of files, I want those splitted files to have configurable sizes like 250 MB. Each file should be well formed having an exact copy of the header (and footer as the closing of the header) from the original file. Forthermore, a table should be generated were I can see, that the File X is seperated into Part N with timestamp:

The Original XML-Files look like this:

<?xml ...>
<Headerelement with some infos to be copied 1to1>
<OfferInfo>
<OfferID></OfferID>
...
</OfferInfo>
<OfferInfo>
<OfferID></OfferID>
...
</OfferInfo>
<OfferInfo>
<OfferID></OfferID>
...
</OfferInfo>
</Headerelement>

-------------------------
Protocol Table:

Orginalfilename|Name of PartN|Size of PartN|Timestamp

-------------------------

All in all I ended up with reading the XML processing docus of gawk,
but as it seems I am lacking some deeper programming skills.. Could
someone please help?

Thx
Malapha
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GETHUGEPAGESIZES(3)					     Library Functions Manual					       GETHUGEPAGESIZES(3)

NAME
gethugepagesizes - Get the system supported huge page sizes SYNOPSIS
#include <hugetlbfs.h> int gethugepagesizes(long pagesizes[], int n_elem); DESCRIPTION
The gethugepagesizes() function returns either the number of system supported huge page sizes or the sizes themselves. If pagesizes is NULL and n_elem is 0, then the number of huge pages the system supports is returned. Otherwise, pagesizes is filled with at most n_elem page sizes. RETURN VALUE
On success, either the number of huge page sizes supported by the system or the number of huge page sizes stored in pagesizes is returned. On failure, -1 is returned and errno is set appropriately. ERRORS
EINVAL n_elem is less than zero or n_elem is greater than zero and pagesizes is NULL. Also see opendir(3) for other possible values for errno. This error occurs when the sysfs directory exists but cannot be opened. NOTES
This call will return all huge page sizes as reported by the kernel. Not all of these sizes may be usable by the programmer since mount points may not be available for all sizes. To test whether a size will be usable by libhugetlbfs, hugetlbfs_find_path_for_size() can be called on a specific size to see if a mount point is configured. SEE ALSO
oprofile(1), opendir(3), hugetlbfs_find_path_for_size(3), libhugetlbfs(7) AUTHORS
libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list. October 10, 2008 GETHUGEPAGESIZES(3)