Hi Keith,
> I have a directory structure and a GDML file as follows
> <!DOCTYPE xml [
> <!ENTITY define SYSTEM "DC1_define.xml">
> <!ENTITY materials SYSTEM "DC1_materials.xml">
> <!ENTITY solids SYSTEM "DC1_solids.xml">
> <!ENTITY setup SYSTEM "DC1_setup.xml">
> <!ENTITY struct SYSTEM "DC1_struct.xml">
>]>
>
> <xml xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance xsi:noNamespaceSchemaLocation=http://service-spi.web.cern.ch/service-spi/app/releases/GDML/schema/gdml.xsd>&define;&materials;&solids;&setup;&struct;</xml>
> Where the files labelled with .xml type are not strictlly xml files as they have no <xml> ...content ... </xml> just valid include contents
> It is processed by
> try:
> from lxml import etree
> parser = etree.XMLParser(resolve_entities=True)
> root = etree.parse(filename, parser=parser)
> # print('error log')
> # print(parser.error_log)
>
> except ImportError:
>
> [...]
>
> This all works fine BUT
> I now wish to implement other functions which process the files listed in the Entities as individual xml files, Is there a way to achieve this?
> or alternatively is there a way to use an actual xml file as a include.
(not having actually tried out any of this, but) what comes to mind is:
- Parse with resolve_enttities=False and then handle the unresolved entities yourself.
You should be able to get at the entity references in the tree e.g. using tree.iter(etree.Entity).
The entity definitions can be accessed through a tree's docinfo attribute:
tree.docinfo.internalDTD.entities()
- If you have control over the XML file, maybe switch to XInclude instead of entities to include
separate content? Again, instead of automatically processing inclusions (through tree.xinclude())
iterate the include nodes yourself for full control of what you want to achieve.
- lxml supports custom resolvers. Both the DTD and XInclude approaches might be combinable
with such custom resolvers to hook into the regular mechanics and get
more control over the actual (see https://lxml.de/resolvers.html).
Note: you're probably aware that resolve_entities=True can be a security risk if applied to
untrusted XML input. Handle with care.
Best regards,
Holger
Landesbank Baden-Wuerttemberg
Anstalt des oeffentlichen Rechts
Hauptsitze: Stuttgart, Karlsruhe, Mannheim, Mainz
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HRA 40687
Amtsgericht Mainz
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I have a directory structure and a GDML file as follows
<!DOCTYPE xml [
<!ENTITY define SYSTEM "DC1_define.xml">
<!ENTITY materials SYSTEM "DC1_materials.xml">
<!ENTITY solids SYSTEM "DC1_solids.xml">
<!ENTITY setup SYSTEM "DC1_setup.xml">
<!ENTITY struct SYSTEM "DC1_struct.xml">
]>
<xml xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http://service-spi.web.cern.ch/service-spi/app/releases/GDML/schema/gdml.xsd">&define;&materials;&solids;&setup;&struct;</xml>
Where the files labelled with .xml type are not strictlly xml files as
they have no <xml> ...content ... </xml> just valid include contents
It is processed by
try:
from lxml import etree
parser = etree.XMLParser(resolve_entities=True)
root = etree.parse(filename, parser=parser)
# print('error log')
# print(parser.error_log)
except ImportError:
try:
import xml.etree.ElementTree as etree
FreeCAD.Console.PrintMessage(
"running with etree.ElementTree (import limitations)\n"
)
FreeCAD.Console.PrintMessage(
" for full import add lxml library \n"
)
tree = etree.parse(filename)
This all works fine BUT
I now wish to implement other functions which process the files listed
in the Entities as individual xml files, Is there a way to achieve this?
or alternatively is there a way to use an actual xml file as a include.
--
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