Subject: Changing text "in place" From: Michel Goossens <Michel.Goossens@xxxxxxx> Date: Sat, 1 May 1999 19:21:23 +0200 (METDST) |
I am presently working on writing an XSL stylesheet translating an XML document (the XML spec, in fact) into LaTeX. However, I have a problem to get some characters that are "special" for LaTeX into a form that is acceptable (e.g., $, %, #, &, etc. have a special meaning). So the easiest would be to escape such characters when they get transferred to the result tree, _if necessary_. The latter is important, since inside verbatim-like environments the characters can be used as-is, so I have to handle the text nodes depending on their parents. Before I go off and write a set of Java routines using xt's extension mechanism, I wonder wether something simpler is possible. As an example, consider the following extract from the XML spec: <scrap> .... <prod id="NT-PubidLiteral"><lhs>PubidLiteral</lhs> <rhs>'"' <nt def='NT-PubidChar'>PubidChar</nt>* '"' | "'" (<nt def='NT-PubidChar'>PubidChar</nt> - "'")* "'"</rhs> </prod> <prod id="NT-PubidChar"><lhs>PubidChar</lhs> <rhs>#x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]</rhs> </prod> </scrap> Inside a scrap element (but not inside, for instance, an eg element) I would like to escape #, $, %, _, amongst others, by preceding them with a \ escape character. I have tried to see how to use the translate function on a text node, but that maps only characters one-to-one. Also, I have not found how to stream the content of the input (source) tree text note through a "filter" to the output (result) tree text node. Any help would be appreciated. m ---------------------------------------------------- Dr. Michel Goossens Phone: (+41 22) 767-5028 IT Division Fax: (+41 22) 767-8630 CERN Email: goossens@xxxxxxx CH-1211 Geneva 23 F-01631 CERN Cedex Switzerland France XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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