Re: whitespaces, need a help !

[Serdar Kilic <serdar@skilic.com>]

Hey there,
  This is out of the MSXML docs.
"XSL Transformations (XSLT) provides a built-in function, normalize-space(),
that strips leading and trailing white space from a string and normalizes
multiple successive white space characters to a single space. It takes one
argument, a string or node-set (the latter being converted to a string as
necessary); if the argument is omitted, normalize-space() assumes the
context node."

samples:
------------- in your xml doc -------------
<generouswhitespace>
There is a l     o    t of white         space here!
</generouswhitespace>

------------- in your xsl doc -------------
<xsl:template match="generouswhitespace">
[<xsl:value-of select="normalize-space(.)" />]
</xsl:template>

hth.,
Serdar

----- Original Message -----
From: "Saxena, Saurabh" <saurabh.saxena@intel.com>
To: "'Rick Jelliffe'" <ricko@allette.com.au>; <xml-dev@lists.xml.org>
Sent: Wednesday, May 23, 2001 8:36 PM
Subject: RE: whitespaces, need a help !


> HI
> Even i am facing the same problem.Actually i have a tag in XML file as
> <NAME>ABCD></NAME>
> Later i am storing this in the database.Now the maximum length for this is
> 8.(As defined in the schema file)
> What is happening if there is a TAG value like
> <NAME>ABCD                   </NAME>
> Then also the validator validates this file successfully and this got
> bounced when it goes to the database.Is there any way to trim these
> leading/trailing whitespaces.
> I can't add anything(extra code) in my XML file as they are
> autogenerated.Can something be done at the schema file or in the code
where
> i am validating the file
> regards
> saurabh
>
>
> -----Original Message-----
> From: Rick Jelliffe [mailto:ricko@allette.com.au]
> Sent: Wednesday, May 23, 2001 5:29 PM
> To: xml-dev@lists.xml.org
> Subject: Re: whitespaces, need a help !
>
>
>  From: Vladimir V. Popov <vladimir.popov@arcadia.it>
>
> >  I have a xml data with elements which contain only whitespace(s).
> >  Does anybody know how can I check and constrain these elements for
> >  using, for example, only such chars (UTF-16): #x0020, "I", "E"?
>
> There are several issues here. For a start, be warned that the regular
> expression matching of XML Schema implementations may not be satisfactory
> yet: it is too early to have confidence so you should test the particular
> tools.
>
> For the XML document, use xml:space="preserve" on the elements that must
> preserve whitespace. This probably won't have any effect, but it is good
> practise.
> (Xml:space was developed because the default SGML system (remove first
> leading and trailing newline) was violated by html:pre and a bit tricky
for
> people. )
>
> In the XML Schema, use datatypes derived from "string" not from "token".
> The token datatype (which include most string types) will strip leading
and
> trailing whitespace characters (following the rules in XML s. 3.3.3).
Check
> whether "string" or "normalizedString" is appropriate: perhaps
> "normalizedString" might be bad if newlines are changed to spaces.
>
> Now for the particular datatypes. You have three choices, I think.
> (I have not tried these: no flames please.)
>
> The first is merely to make a regular expression such as
>   ( '&#x20;' | 'I' | 'E' )
> That is the preferred option.  If it doesn't work, try
>   ( '\&#x20;' | 'I' | 'E' )
> as a workaround. If it still doesn't work, you could settle for using
>   ( '\s' | 'I' | 'E' )
> which will allow any single whitespace.
>
> The second choice is to make explicit types for "string containing single
> space only", "string containing I only", etc. then defining a union.  I
> would be surprised if current schema implementations have tested for this,
> so good luck if you use it!
>
> The third choice is to use a String, but then use enumerations. Again, I
bet
> this has not been tested by implementers.
>
> Cheers
> Rick Jelliffe
>
>
>
>
>
>
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