Dear creators of libxml2,
I think I found a slight mistake in function xpath.c:xmlXPathStringEvalNumber()
of libxml2 version 2.9.0.
For data type "float" in xml files resp. xml schemas
[1] states "The mantissa must be a decimal number."
[2] contains details:
An optional leading sign is allowed.
If the sign is omitted, "+" is assumed.
and names "+100000.00" as valid example for a decimal.
In contrast when first non-whitespace-character of it's argument is a '+',
xpath.c:xmlXPathStringEvalNumber() stops parsing and return 0.0.
To make libxml2 conform to [1] I suggest the following change:
Replace 3 lines 10098 through 10100 (incl.)
by the following 7 lines
if ((*cur != '.') && ((*cur < '0') || (*cur > '9')) && (*cur != '-') &&
(*cur != '+')) {
return(xmlXPathNAN);
}
if (*cur == '+') {
isneg = 0;
cur++;
}
Please let me know, what you think about my proposal.
References
[1] http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/datatypes.html#float
3.2.4.1 Lexical representation
[2] http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/datatypes.html#decimal
3.2.3.1 Lexical representation
With kind regards
Christoph Kuhnke
Entwicklung Fahrerassistenzsysteme
Elektrobit Automotive GmbH
Am Wolfsmantel 46
91056 Erlangen
Tel.: +49-9131-7701-7142
Mobil +49 (0) 172 8582839
[email protected]
Im Auftrag der AUDI AG
I/EF-56, extern
85045 Ingolstadt
mailto:[email protected]
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