Saxon » SaxonC

For the current release of 12.1 I manage to compile your file by setting a parser property e.g.

from saxonche import *

with PySaxonProcessor(license=False) as proc:
    print(proc.version)

    proc.set_configuration_property('http://saxon.sf.net/feature/parserProperty?uri=http%3A//www.oracle.com/xml/jaxp/properties/entityExpansionLimit', '128000')

    xslt_processor = proc.new_xslt30_processor()

    xdm_doc = proc.parse_xml(xml_file_name='C:/Users/marti/Downloads/entity-expansion-size.xsl')

    xslt_executable = xslt_processor.compile_stylesheet(stylesheet_node=xdm_doc)

Note also that https://saxonica.plan.io/issues/5885 might be relevant.

Thanks @Martin Honnen. I finally got it to run, but firstly ran into issues.

The following shows the code that works:¶

SaxonProcessor* processor = new SaxonProcessor(false);
processor->setConfigurationProperty("http://saxon.sf.net/feature/parserProperty?uri=http://www.oracle.com/xml/jaxp/properties/entityExpansionLimit", "0");

Xslt30Processor* trans = processor->newXslt30Processor();

// This works:
XdmNode *res = processor->parseXmlFromFile(xslFile.c_str());
XsltExecutable* exe = trans->compileFromXdmNode(res);
exe->transformFileToFile(sourceFile.c_str(), outputFile.c_str());

What does not work is if you use compileFromFile directly, instead of parseXmlFromFile:¶

XsltExecutable* exe = trans->compileFromFile(xslFile.c_str());
exe->transformFileToFile(sourceFile.c_str(), outputFile.c_str());

I have a strange feeling that this failure is caused because the configuration property seems be be set too late, e.g. after the entity expansion. To show this, try the following:

call "setConfigurationProperty" with an "invalid" property:

processor->setConfigurationProperty("http://saxon.sf.net/feature/parserProperty?uri=gurkensalat", "0");

Case 1: use an "simple" xslFile with no large entity expansion --> Error¶

Selected XML parser com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser
    does not recognize the property gurkensalat

Case 2: use an xslFile with a large entity expansion --> Error¶

SaxonApiException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; JAXP00010001: 
    The parser has encountered more than "64000" entity expansions in this document; 
    this is the limit imposed by the JDK.

To me, this two different errors clearly show that the entity expansion seems to be performed before any (in this case invaild) configuration property is set to the SAXParser.

No, I think it's because properties set using http://saxon.sf.net/feature/parserProperty affect how source documents are parsed, not how stylesheets are parsed. So it will affect parseXmlFromFile (because we don't know we're dealing with a stylesheet here), but not compileFromFile, because when we know we're parsing a stylesheet, we configure the parser for that purpose.