Re: How to convert XML doc from UTF-8 to ISO-8859-1 ch
Assume I have a XML doc which is UTF-8 encoded.
And how to encode it the opposite direction?
Normally the encoding is defined in an attribute in the top most <xml> tag.
The XML Declaration at the beginning of XML documents informs an XML processor about the syntax of the XML document. It is not a tag. It does not have attributes.
The XML Declaration has the same syntax as a processing instruction, and the parameters of the declaration borrow the same syntax as attributes, but the XML Declaration does not show up in the XPath data model for XML because it isn't data ... it is syntax.
Is there a way to detect if this declaration is true and corresponds with the real encoding in the full XML doc? Or if it is faked/misplaced by mistake?
For example, if you have ever seen a capital A with diaeresis "D" followed by a copyright symbol, that is because the UTF-8 encoded copyright symbol has been successfully interpreted as two ISO-8859-1 characters. Which is wrong, but it is not in error in the ISO-8859-1 encoding, so you get wrong data with no error message.
Character encoding integrity is not the XML processor's responsibility, but the creator's responsibility. The XML processor must take the XML Declaration at face value.
I hope this helps.
. . . . . . . . . . . . . Ken
-- UBL and Code List training: Copenhagen, Denmark 2010-02-08/10 XSLT/XQuery/XPath training after http://XMLPrague.cz 2010-03-15/19 XSLT/XQuery/XPath training: San Carlos, California 2010-04-26/30 Vote for your XML training: http://www.CraneSoftwrights.com/s/i/ Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ Training tools: Comprehensive interactive XSLT/XPath 1.0/2.0 video Video lesson: http://www.youtube.com/watch?v=PrNjJCh7Ppg&fmt=18 Video overview: http://www.youtube.com/watch?v=VTiodiij6gE&fmt=18 G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx Male Cancer Awareness Nov'07 http://www.CraneSoftwrights.com/s/bc Legal business disclaimers: http://www.CraneSoftwrights.com/legal
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