[issue2818] pulldom cannot handle xml file with large external entity properly

[Jeffrey Kintscher]

Change by Jeffrey Kintscher :


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nosy: +Jeffrey.Kintscher

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[issue2818] pulldom cannot handle xml file with large external entity properly

[Cheryl Sabella]

Change by Cheryl Sabella :


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nosy: +scoder
versions: +Python 3.8 -Python 3.2, Python 3.3, Python 3.4

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[issue2818] pulldom cannot handle xml file with large external entity properly

[M. Volz]

Changes by M. Volz marie...@gmail.com:


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nosy: +mvolz

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[issue2818] pulldom cannot handle xml file with large external entity properly

[Antoine Pitrou]

Changes by Antoine Pitrou pit...@free.fr:


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nosy: +christian.heimes

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[issue2818] pulldom cannot handle xml file with large external entity properly

[Ezio Melotti]

Changes by Ezio Melotti ezio.melo...@gmail.com:


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stage:  - needs patch
versions: +Python 3.3, Python 3.4 -Python 3.1

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[issue2818] pulldom cannot handle xml file with large external entity properly

[Terry J. Reedy]

Changes by Terry J. Reedy tjre...@udel.edu:


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versions: +Python 2.7, Python 3.1, Python 3.2 -Python 2.5

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[issue2818] pulldom cannot handle xml file with large external entity properly

[Luyang Han]

New submission from Luyang Han [EMAIL PROTECTED]:

when use xml.dom.pulldom module to parse a large xml file, if all the 
information is saved in one xml file, the module can handle it in the 
following way without construction the whole DOM:

events = xml.dom.pulldom.parse('file.xml')
for (event, node) in events:
process(event, node)

But if 'file.xml' contains some large external entities, for example:

!ENTITY file_external SYSTEM others.xml
bodyfile_external;/body

Then using the same python snippet above leads to enormous memory 
usage. I did not perform a concrete benchmark, in one case a 3M 
external xml file drained about 1 GB memory. I think in this case it 
might be the whole DOM structure is constructed.

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components: XML
messages: 66628
nosy: hanselda
severity: normal
status: open
title: pulldom cannot handle xml file with large external entity properly
type: resource usage
versions: Python 2.5

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