Has anyone invented this wheel already?
not the whole wheel but you may be able to borrow a few spokes from the
xml file and stylesheets in
http://www.w3.org/203/entities/2007xml
http://www.w3.org/2003/entities/2007xml/
unicode.xml has some xml with the unicode block ranges, which
characters.xsl uses to make table headings in tables such as
http://www.w3.org/2003/entities/2007doc/020.html
rather than use lots of xsl:choose coding you can just take firs 5 hex
value of the character code, ten just pick up the last block with a
start value (lexicographically) less than that in a sequence pulled from
this fragent of unicode.xml
<unicodeblocks>
<block start="00000" end="0007F" name="C0 Controls and Basic Latin"/>
<block start="00080" end="000FF" name="C1 Controls and Latin-1
Supplement"/>
<block start="00100" end="0017F" name="Latin Extended-A"/>
<block start="00180" end="0024F" name="Latin Extended-B"/>
<block start="00250" end="002AF" name="IPA Extensions"/>
...
characters.xsl has variious utility functions for getting to and from
hex strings
David
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