yet another feeb attempt to escape quotes in XPaths

Phlip

XMLers:

Try this failing test:

assert_xml '<html>
<form class=\'for_"sale"\' />
</html>'

assert_tag_id :form, :class ='for_"sale"'

assert_tag_id builds the XPath needed to find that for_"sale" sign. Here's
what it builds for libxml:

descendant-or-self::form[ @class = "for_"sale"" ]

Yet that doesn't hit the sample XML. No error message, but no hit either.

(I'm going thru libxml-ruby, BTW, and Ruby's native REXML has similar
problems...)

--
Phlip
http://www.oreilly.com/catalog/9780596510657/
"Test Driven Ajax (on Rails)"
assert_xpath, assert_javascript, & assert_ajax

Jun 27 '08 #1

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1602

Bjoern Hoehrmann

* Phlip wrote in comp.text.xml:

>Try this failing test:

assert_xml '<html>
<form class=\'for_"sale"\' />
</html>'

assert_tag_id :form, :class ='for_"sale"'

assert_tag_id builds the XPath needed to find that for_"sale" sign. Here's
what it builds for libxml:

descendant-or-self::form[ @class = "for_"sale"" ]

Yet that doesn't hit the sample XML. No error message, but no hit either.

The entity references would be expanded only inside an XML document like
a XSLT document, XPath itself has no such mechanism. You would have to
use ' for the outer quotes

...[ @class = 'for_"sale"' ]

And if you have to nest the quotes, you have to use concat to build the
string, or variabels if you can.
--
Björn Höhrmann · mailto:bj****@hoehrmann.de · http://bjoern.hoehrmann.de
Weinh. Str. 22 · Telefon: +49(0)621/4309674 · http://www.bjoernsworld.de
68309 Mannheim · PGP Pub. KeyID: 0xA4357E78 · http://www.websitedev.de/

Jun 27 '08 #2

Phlip

Bjoern Hoehrmann wrote:

And if you have to nest the quotes, you have to use concat to build the
string, or variabels if you can.

Tx! I will settle for a sternly worded error message to the user-programmer.
(-;

--
Phlip

Jun 27 '08 #3

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yet another feeb attempt to escape quotes in XPaths

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