yet another feeb attempt to escape quotes in XPaths

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  • Phlip
    #1

    yet another feeb attempt to escape quotes in XPaths

    XMLers:

    Try this failing test:

    assert_xml '<html>
    <form class=\'for_"sa le"\' />
    </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_&quot;sale &quot;" ]

    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
    O'Reilly Media - Technology and Business Training
    http://www.oreilly.com/catalog/9780596510657/

    "Test Driven Ajax (on Rails)"
    assert_xpath, assert_javascri pt, & assert_ajax


    Tags: None
    • Bjoern Hoehrmann
      #2
      Re: yet another feeb attempt to escape quotes in XPaths

      * Phlip wrote in comp.text.xml:
      >Try this failing test:
      >
      assert_xml '<html>
      <form class=\'for_"sa le"\' />
      </html>'
      >
      assert_tag_id :form, :class ='for_"sale"'
      >
      >assert_tag_i d builds the XPath needed to find that for_"sale" sign. Here's
      >what it builds for libxml:
      >
      descendant-or-self::form[ @class = "for_&quot;sale &quot;" ]
      >
      >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:bjoern@h oehrmann.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/

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        • Phlip
          #3
          Re: yet another feeb attempt to escape quotes in XPaths

          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


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