Take a look at Saxon (my favorite XSLT processor). Saxon includes an
extension function called evaluate-node. That function reads an XPath
expression from a source document and then evaluates it at runtime - very
handy for this sort of thing.
HTH
Jay Bryant
Bryant Communication Services
----- Original Message -----
From: "Liron" <magilam(_at_)netvision(_dot_)net(_dot_)il>
To: <xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com>
Sent: Monday, January 30, 2006 3:19 PM
Subject: [xsl] Automatically generate xpath
Hello all,
I'm looing for some tool (an open source library would be better) that can
generate a xpath out of a set of xpaths with some rules like exclusion and
inclusion
I want to provide an example to what I mean. consider the following html:
<html>
<body>
<table>
<tr><td><font>
<a href="about:blank"><b>Text1</b></a>
<a href="about:blank"><b>Text2</b></a>
<a href="about:blank"><b>Text3</b></a>
</font></td></tr>
<tr><td><font>
<a href="about:blank"><b>Text4</b></a>
<a href="about:blank"><b>Text5</b></a>
<a href="about:blank"><b>Text6</b></a>
</font></td></tr>
</table>
<table>
<tr><td><font>
<a href="about:blank"><b>Text7</b></a>
<a href="about:blank"><b>Text8</b></a>
<a href="about:blank"><b>Text9</b></a>
</font></td></tr>
<tr><td><font>
<a href="about:blank"><b>Text10</b></a>
<a href="about:blank"><b>Text11</b></a>
<a href="about:blank"><b>Text12</b></a>
</font></td></tr>
</table>
</body>
</html>
I want to provide this tool the following xpaths:
/html/body/table[1]/tr[1]/td/font/a[1]/b/text() (this selects Text1) and
/html/body/table[2]/tr[2]/td/font/a[3]/b/text() (this selects Text12)
and get an output that looks something like:
/html/body/table/tbody/tr/td/font/a[((count(preceding-sibling::a) = 0) and
(ancestor::table[1][count(preceding-sibling::table)=0]) and
(ancestor::tr[1][count(preceding-sibling::tr)=0])) or
((count(preceding-sibling::a) = 2) and
(ancestor::table[1][count(preceding-sibling::table)=1]) and
(ancestor::tr[1][count(preceding-sibling::tr)=1]))]/b/text()
which will return me Text1 and Text12 (I have no idea how to make this
simpler, if someone know of a way, I'd appreciate it)
I'd also like to have the ability to exclude certain elements from a
supplied xpath in a kind of a reversed way.
If anyone knows of a solution or such a tool I'd really appreciate it
Thank you
Liron
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