[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

RE: tokenize() for text wrap

Subject: RE: tokenize() for text wrap
From: "Richard Lewis" <richardlewis@xxxxxxxxxxxxxx>
Date: Thu, 10 Feb 2005 16:39:58 +0000
sed tokenize
On Thu, 10 Feb 2005 16:08:34 -0000, "Michael Kay" <mike@xxxxxxxxxxxx>
said:
> The regex in tokenize() is a regular expression that the separator must
> match. There's no way of constraining the tokens, only the separator.
> 
> .{30,} matches any string of 30 characters or more, but .{30,}? also
> matches
> a zero-length string. I'm not sure what this would achieve even if it
> worked!
> 
If you test this with sed you'll need a regex like this:

echo "string..." | sed "s/\(.\{,30\}\) /\1\n/g"

But if you check the wierd regex syntax for XPath:
http://www.w3.org/TR/xpath-functions/#regex-syntax

it says "X{n,}? matches X, at least n times". Bizarre, isn't it?

> I think you can use xsl:analyze-string for this. Use a regex that matches
> the required token together with the following separator; treat these as
> two
> subgroups by parenthesizing the regex, and in the xsl:matching-substring
> child, pick up the token value as regex-group(1).
> 
OK, I've tried this but I can't work out the right regex. I've tried:
(.{30,}?\s+)(\s+)
(.{30,}\s+)(\s+)
.{30,}\s+
.{30,}?\s+

and they all produce no matches.
> 
> > -----Original Message-----
> > From: Richard Lewis [mailto:richardlewis@xxxxxxxxxxxxxx] 
> > Sent: 10 February 2005 15:50
> > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> > Subject:  tokenize() for text wrap
> > 
> > Hello XSL list,
> > 
> > I'm just trying an idea for text wrapping when transforming 
> > XML to SVG.
> > 
> > Inside a named template to which a long string of non-marked up text
> > ($text) and some other bits and pieces is passed I have the following
> > for-each:
> > 
> > <xsl:for-each select="tokenize($text, '.{30,}?\s+')">
> >     <tspan dy="{...}">
> >         <xsl:value-of select="." />
> >     </tspan>
> > </xsl:for-each>
> > 
> > The idea is that it splits the $text string up at the first 
> > space after
> > 30 characters (this number is actually a variable in the real 
> > thing) and
> > then formats each token as a tspan element. The output, however,
> > contains the correct number of tspan elements (which also have the
> > correct 'dy' attributes) but all but the last one is empty. 
> > (I think the
> > text in the last one is the correct, though).
> > 
> > (I'm working with Saxon 8.2B; I've tried different combinations of
> > $flags for the tokenize() function but the result is always the same)
> > 
> > Any ideas what might be wrong with it?
> > 
> > Cheers,
> > Richard

Current Thread

PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.