URL parsing and replacing

**Keith Davies** · Jul 20 '05, 08:34 AM

Re: URL parsing and replacing

jamesfin@yahoo. com <jamesfin@yahoo .com> wrote:[color=blue]
> Dear XMLers,
>
>
> Please guide me...
>
>
> I have a simple xml file...
>
>
><URLTest>
> <text1>My favorite news site is http://www.yahoo.com</text1>
> <text2>My favorite software site is
> http://www.microsoft.c om</text2>
></URLTest>
>
>
> Using this XML, how do I extract the url using XSLT so that the
> resulting html contains the following...
>
> My favorite news site is <a
> href="http://www.yahoo.com"> http://www.yahoo.com</a>
>
> My favorite software site is <a
> href="http://www.yahoo.com"> http://www.microsoft.c om</a>
>
> The text entered is free form so I won't know ahead of time if a URL
> exists in the input text field or not. It's not required but it would
> be nice to create the link for them if it is there.
>
> It is essentially replacing the http://... with the href code.[/color]

<xsl:template match='text()'>
<xsl:call-template name='grab-url'>
<xsl:with-param name='s' select='.' />
</xsl:call-template>
</xsl:template>

<xsl:template name='grab-url'>
<xsl:param name='s' />
<xsl:variable name='pre' select='string-before($s,"http ://")' />
<xsl:variable name='test' select='string-after($s,"http://")' />
<xsl:variable name='addr' select='string-before($test," ")' />
<xsl:variable name='post' select='string-after($test," ")' />
<xsl:variable name='url'>
<xsl:choose>
<xsl:when test='$addr'>ht tp://<xsl:value-of select='$addr'
/></xsl:when>
<xsl:when test='$test'>ht tp://<xsl:value-of select='$test'
/></xsl:when>
</xsl:choose>
</xsl:variable>
<xsl:choose>
<xsl:when test='$pre'>
<xsl:value-of select='$pre'>
<a href='{$url}'>< xsl:value-of select='$url' /></a>
<xsl:if test='$post'><x sl:call-template name='grab-url'>
<xsl:with-param name='s' select='concat( " ",$post)' />
</xsl:call-template></xsl:if>
</xsl:when>
<xsl:otherwise> <xsl:value-of select='$s' /></xsl:otherwise>
</xsl:choose>
</xsl:template>

Should do it. I've expanded the elements a bit to make it more
readable; it may be necessary to collapse things and remove whitespace
to ensure you don't get bogus spaces in the output text.

Keith
--
Keith Davies "Trying to sway him from his current kook-
keith.davies@kj davies.org rant with facts is like trying to create
keith.davies@gm ail.com a vacuum in a room by pushing the air
http://www.kjdavies.org/ out with your hands." -- Matt Frisch

**jamesfin@yahoo.com** · Jul 20 '05, 08:34 AM

Re: URL parsing and replacing

Thanks for the code!

Using my existing xslt, how do I integrate this code? The @result in
my code below has the original string to display with the possible URL
embedded in it.

<xsl:styleshe et version="1.0"
xmlns:xsl="http ://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" omit-xml-declaration="ye s" indent="yes"/>
<xsl:template match="/">
<html>
<body>
<div align="center">
<p><img src="logo.gif"> </img></p>
<p><font size="+1" face="Verdana, Arial, Helvetica,
sans-serif"></font></p>
</div>
<table border="0" align="center">
<tr>
<td align="left" bgcolor="638EC3 ">
<div align="center">
<font color="#FFFFFF" size="-1" face="Verdana, Arial,
Helvetica, sans-serif">Step</font>
</div>
</td>
<td align="left" bgcolor="638EC3 ">
<font color="#FFFFFF" size="-1" face="Verdana, Arial, Helvetica,
sans-serif">Test Results</font>
</td>
</tr>
<xsl:for-each select="applica tion/steps/step">
<xsl:choose>
<xsl:when test="(@pass='P ASS')">
<tr >
<td bgcolor="638EC3 ">
<div align="center"> <font color="#FFFFFF" size="-1"
face="Verdana, Arial, Helvetica, sans-serif">
<xsl:value-of select="@id"/>
</font>
</div>
</td>
<td bgcolor="#80FF8 0">
<div align="{@align} ">
<font size="-1" face="Verdana, Arial, Helvetica,
sans-serif">
<xsl:value-of select="@result "
disable-output-escaping="yes"/>
</font>
</div>
</td>
</tr>
</xsl:when>
<xsl:when test="(@pass='P ass')">
<tr >
<td bgcolor="638EC3 ">
<div align="center"> <font color="#FFFFFF" size="-1"
face="Verdana, Arial, Helvetica, sans-serif">
<xsl:value-of select="@id"/>
</font>
</div>
</td>
<td bgcolor="#FFFF8 0">
<div align="{@align} ">
<font size="-1" face="Verdana, Arial, Helvetica, sans-serif">
<xsl:value-of select="@result "/>
</font>
</div>
</td>
</tr>
</xsl:when>
<xsl:when test="(@pass='F ail')">
<tr >
<td bgcolor="638EC3 ">
<div align="center"> <font color="#FFFFFF" size="-1"
face="Verdana, Arial, Helvetica, sans-serif">
<xsl:value-of select="@id"/>
</font>
</div>
</td>
<td bgcolor="#FF808 0">
<div align="{@align} ">
<font size="-1" face="Verdana, Arial, Helvetica, sans-serif">
<xsl:value-of select="@result "/>
</font>
</div>
</td>
</tr>
</xsl:when>
<xsl:otherwis e>
<tr>
<td>
<div align="center">  <font size="-1" face="Verdana,
Arial, Helvetica, sans-serif">
<xsl:value-of select="@id"/>
</font>
</div>
</td>
<td bgcolor="#FFFF8 0">
<div align="{@align} ">
<font size="-1" face="Verdana, Arial, Helvetica, sans-serif">
<xsl:value-of select="@result "/>
</font>
</div>
</td>
</tr>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>

**Keith Davies** · Jul 20 '05, 08:34 AM

Re: URL parsing and replacing

jamesfin@yahoo. com <jamesfin@yahoo .com> wrote:[color=blue]
> Thanks for the code!
>
> Using my existing xslt, how do I integrate this code? The @result in
> my code below has the original string to display with the possible URL
> embedded in it.[/color]

Oh? If that's the case, just call grab-url. What I wrote should work
on *all* text() in the document (but not attribute values).

Where you process @result, do:

<xsl:call-template name='grab-url'>
<xsl:with-param name='s' select='@result ' />
</xsl:call-template>

instead of

<xsl:value-of select='@result ' />

You could instead do

<xsl:template match='@result' >
<xsl:call-template name='grab-url'>
<xsl:with-param name='s' select='.' />
</xsl:call-template>
</xsl:template>

then change

<xsl:value-of select='@result ' />

to

<xsl:apply-templates select='@result ' />

It all depends what you're doing.

Keith
--
Keith Davies "Trying to sway him from his current kook-
keith.davies@kj davies.org rant with facts is like trying to create
keith.davies@gm ail.com a vacuum in a room by pushing the air
http://www.kjdavies.org/ out with your hands." -- Matt Frisch

**jamesfin@yahoo.com** · Jul 20 '05, 08:34 AM

Re: URL parsing and replacing

Getting close!

I'm now getting an 'xsl-value-of may not contain a.' error. Is the
'url' parameter being set or used?

If I remove this section of code, it generates okay.

<xsl:choose>
<xsl:when test='$pre'>
<xsl:value-of select='$pre'>

<a href='{$url}'> <xsl:value-of select='$url' /> </a>
<xsl:if test='$post'>
<xsl:call-template name='grab-url'>
<xsl:with-param name='s' select='concat( " ",$post)' />
</xsl:call-template>
</xsl:if>

</xsl:value-of>
</xsl:when>
<xsl:otherwise> <xsl:value-of select='$s' /></xsl:otherwise>
</xsl:choose>

**Keith Davies** · Jul 20 '05, 08:34 AM

Re: URL parsing and replacing

jamesfin@yahoo. com <jamesfin@yahoo .com> wrote:[color=blue]
> Getting close!
>
> I'm now getting an 'xsl-value-of may not contain a.' error. Is the
> 'url' parameter being set or used?[/color]

Typo on my part.
[color=blue]
> <xsl:choose>
> <xsl:when test='$pre'>
> <xsl:value-of select='$pre'>[/color]

should be
[color=blue]
> <xsl:choose>
> <xsl:when test='$pre'>
> <xsl:value-of select='$pre' />[/color]

Keith
--
Keith Davies "Trying to sway him from his current kook-
keith.davies@kj davies.org rant with facts is like trying to create
keith.davies@gm ail.com a vacuum in a room by pushing the air
http://www.kjdavies.org/ out with your hands." -- Matt Frisch

**jamesfin@yahoo.com** · Jul 20 '05, 08:35 AM

Re: URL parsing and replacing

That fixed it and it works like a champ!

Thanks so much!

**jamesfin@yahoo.com** · Jul 20 '05, 08:35 AM

Re: URL parsing and replacing

I did notice that there must be a space in front of the http://... to
work even if it's the first thing on a line of text. Anyway of getting
around this limitation?

Thanks!

**Keith Davies** · Jul 20 '05, 08:35 AM

Re: URL parsing and replacing

jamesfin@yahoo. com <jamesfin@yahoo .com> wrote:[color=blue]
> I did notice that there must be a space in front of the http://... to
> work even if it's the first thing on a line of text. Anyway of getting
> around this limitation?[/color]

Actually, it doesn't need a space before the http://, it just has to
have *something*.

Look for "test='$pre '". You'll see the instruction to output the $url
value. Move that instruction (and everything after it, to the end of
the "test='$pre '" condition) to immediately following the condition.

That is, it should do

<xsl:if test='$pre'></xsl:if>
<xsl:if test='$url'></xsl:if>
<xsl:if test='$post'></xsl:if>

rather than

<xsl:if test='$pre'>



</xsl:if>

(though I think I used xsl:when there; don't remember and you didn't
quote)

Keith
--
Keith Davies "Trying to sway him from his current kook-
keith.davies@kj davies.org rant with facts is like trying to create
keith.davies@gm ail.com a vacuum in a room by pushing the air
http://www.kjdavies.org/ out with your hands." -- Matt Frisch

URL parsing and replacing

URL parsing and replacing

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