Subject: [xsl] Implementing Conditional Text From: Craig Sampson <Craig.Sampson@xxxxxxx> Date: Tue, 12 Jun 2012 20:39:28 +0000 |
Hello, We, our publications XML support group, are being asked to support conditional text in our source documents. We've come up with an idea but before going any further I thought I'd run it by this group to see if anyone had done this before or if anyone had a better solution. We plan to use processing-instructions (PIs) entered by the authors that would indicate which conditions were on or off. These PIs would be inserted near the top of the documents. There would be additional PIs identifying the beginning and end of conditional text strings. We would use a XSL transform to preprocess these documents and convert the PIs into pseudo elements that could then be processed in a second XSLT preprocessor would keep or discard the strings based on the conditions set in the PIs at the top of the document. The resulting document would not have any of the PIs or pseudo elements just the content that was kept. We want to use PIs so we don't have to dirty up our DTD with conditional elements that would be allowed everywhere. I can't think of any way to eliminate the conversion to pseudo elements which solves the problem of identifying and controlling the conditional text. We are not allowing the conditional text to break existing element boundaries or to be nested within other conditions so the following example should represent what we're trying to do: <topic> <p>Mary had a little <?condStart normal:true?>lamb<?condStop normal:true?><?condStart special:true?>pony<?condStop special:true?>...</p> In the example if the PIs at the top of the document set "normal" to "true" and "special" to "false" then Mary had a little lamb. If both conditions are set to true then Mary will have both the lamb and the pony. Can anyone poke holes in this solution or suggest a better way to accomplish this. Thanks, Craig -------------------------------------------------------------------- Craig R. Sampson SAS Institute Inc. email: craig.sampson@xxxxxxx XML Technologies SAS Campus Drive phone: (919) 531-7417 Cary, NC. 27513 FAX: (919) 677-4444 -------------------------------------------------------------------- Please consider the environment before printing this email
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