[redland-dev] [Raptor RDF Parsing and Serializing Library 0000337]: raptor/turtle outputs invalid qnames which cause syntax errors on parsing

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.librdf.org/mantis/view.php?id=337 
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Reported By:                sree
Assigned To:                
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Project:                    Raptor RDF Parsing and Serializing Library
Issue ID:                   337
Category:                   api
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Syntax Name:                 
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Date Submitted:             2010-01-29 16:28
Last Modified:              2010-01-29 16:28
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Summary:                    raptor/turtle outputs invalid qnames which cause
syntax errors on parsing
Description: 
When serializing data to turtle, Raptor incorrectly allows "." as part of
nameChar (AFAICT, "." is valid in XML and SPARQL, but not in Turtle. from
<http://www.w3.org/TeamSubmission/turtle/#sec-grammar-grammar>).

This produces qnames that may contain "." as their final character like
this triple:

<http://example.org> foaf:page dbpedia:Babylon_A.D. .

However, the lexer in turtle_lexer.c does not allow a "." as the last
character:

NCCHAR1 [A-Za-z\\\x80-\xff]
NCCHAR {NCCHAR1}|"-"|"_"|[0-9]
NCNAME_PREFIX {NCCHAR1}(({NCCHAR}|".")*{NCCHAR})?
NCNAME ("_"|{NCCHAR1})(({NCCHAR}|".")*{NCCHAR})?
QNAME {NCNAME_PREFIX}?":"{NCNAME}?

As a result, raptor parses only upto:

<http://example.org> <http://xmlns.com/foaf/0.1/page>
<http://dbpedia.org/resource/Babylon_A.D>

and reports a syntax error on the second ".".


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Issue History 
Date Modified    Username       Field                    Change               
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2010-01-29 16:28 sree           New Issue                                    
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