Regular Expression: not standard processing for '-' in character range
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Key: XERCESC-1705
URL: https://issues.apache.org/jira/browse/XERCESC-1705
Project: Xerces-C++
Issue Type: Bug
Components: Validating Parser (Schema) (Xerces 1.5 or up only)
Reporter: Alexey Miroshnichenko
according to
http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/datatypes.html#dt-regex:
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"A single XML character is a - character range- that identifies the set of
characters containing only itself. All XML characters are valid character
ranges, except as follows:
* The [, ], - and \ characters are not valid character ranges;
* The ^ character is only valid at the beginning of a - positive character
group- if it is part of a - negative character group-
* The - character is a valid character range only at the beginning or end
of a - positive character group- .
Note: The grammar for - character range- as given above is ambiguous, but the
second and third bullets above together remove the ambiguity."
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same time ..\xerces-c-src_2_6_0\src\xercesc\util\regx\ParserForXMLSchema.cpp
comment at line 268 says:
// '[', ']', '-' not allowed and should be esacaped
and it looks like follow is applicable to xerces even it was found in jakarta
http://jakarta.apache.org/regexp/apidocs/ :
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NOTE: Incomplete ranges will be interpreted as "starts from zero" or "ends with
last character".
I.e. [-a] is the same as [\\u0000-a], and [a-] is the same as [a-\\uFFFF], [-]
means "all characters".
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PS: What is the reason for "not standard" behavior?
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