xsl highlight function breaking html tags 1

[werD420]

hello,
Ive come across a highlight function that i was able to add to a search feature i have on a page. however the current method it uses will wrap text that is found even inside of html so its making the tags no longer work. has anyone dealt with this type of thing before?

here's the highlighter template
example of problem
$text = <a href="

http://www.walkthroughs.com">Simple

steps to walkthrough</a>
$what = walk
output=<a href="

http://www.<font

style...>walk</font>throughs.com">Simple steps to <font style...>walk</font>through</a>

<xsl:template name="highlighter">
    <xsl:param name="text"/>
    <xsl:param name="what"/>
    <xsl:variable name="test-text">
      <xsl:call-template name="lower">
        <xsl:with-param name="tolower" select="$text" />
      </xsl:call-template>      
    </xsl:variable>
    <xsl:variable name="test-what">
      <xsl:call-template name="lower">
        <xsl:with-param name="tolower" select="$what" />
      </xsl:call-template>      
    </xsl:variable>
    <xsl:choose>
      <xsl:when test="contains($test-text, $test-what)">
        <xsl:variable name="before" select="substring-before($test-text,$test-what)"/>
        <xsl:variable name="after" select="substring-after($test-text,$test-what)"/>
        <xsl:variable name="real-before" select="substring($text, 1,string-length($before))"/>
        <xsl:variable name="real-after" select="substring($text,string-length($before) + string-length($what) + 1)"/>
        <xsl:value-of select="$real-before" disable-output-escaping="yes"/>
        <font style="background-color:#66FF66"><xsl:value-of select="$what" disable-output-escaping="yes"/></font>
        <xsl:call-template name="highlighter">
          <xsl:with-param name="text" select="$real-after"/>
          <xsl:with-param name="what" select="$what"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$text" disable-output-escaping="yes"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

Id appreciate any insight on this. i thought that perhaps i could examine for an unclosed < in before variable and unopened > in after but im not sure what the best way to do this would be

Thanks in advance


MCP, .Net Solutions Development <%_%>

 

[werD420]

this is what im thinking.

the higlighter template uses before term and after

so
$text = <a href="

http://www.walkthroughs.com">Simple

steps to walkthrough</a>
$what = walk

before1 = <a href="

http://www.

term1 = walk
after1 =throughs.com">Simple steps to walkthrough</a>



im thinking that i can use a reverse function and have
before1rev = .

http://www//:ptth"=ferh

a<
after1rev = >a/<hguorhtklaw ot spets elpmiS>"moc.shguorht

i was thinking i could run some logic off of that to get an intended result but now im just dizzy :S

any thoughts?

  <xsl:template name="nonhtmlreplace">
    <xsl:param name="before" />
    <xsl:param name="before-reversed"/>
    <xsl:param name="after" />
    <xsl:param name="after-reversed" />
    <xsl:param name="what" />
    <xsl:choose>
      <xsl:when test="contains($before-reversed,'&lt;') and not(contains($before-reversed,'&gt;'))">
        /\<xsl:value-of select="$before" disable-output-escaping="yes"/><xsl:value-of select="$what" disable-output-escaping="yes"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:choose>
          <xsl:when test="string-length(substring-before($before-reversed,'&lt;')) &lt; string-length(substring-before($before-reversed,'&gt;'))">
            <xsl:value-of select="$before" disable-output-escaping="yes"/>
            <font style="background-color:#66FF66">
              <xsl:value-of select="$what" disable-output-escaping="yes"/>
            </font>
          </xsl:when>
          <xsl:otherwise>
            -<xsl:value-of select="$before" disable-output-escaping="yes"/>
            <xsl:value-of select="$what" disable-output-escaping="yes"/>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:otherwise>
    </xsl:choose>
    
  </xsl:template>

here's the reverse function im using

<xsl:template name="reverse">
    <xsl:param name="theString"/>

    <xsl:variable name="thisLength" select="string-length($theString)"/>
    <xsl:choose>
      <xsl:when test="$thisLength = 1">
        <xsl:value-of select="$theString"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:variable name="restReverse">
          <xsl:call-template name="reverse">
            <xsl:with-param name="theString"
				 select="substring($theString, 1, $thisLength -1)"/>
          </xsl:call-template>
        </xsl:variable>
        <xsl:value-of
          select="concat(substring($theString,
                                                   $thisLength, 
                                                   1
                                                   ) 
                                                    ,$restReverse
                                         )"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

MCP, .Net Solutions Development <%_%>

 

[tsuji]

Using xslt 2.0 would simplify the task. The general look of the renderment would be something like this.
[tt]
<xsl:template name="highlighter">
<xslaram name="text"/>
<xslaram name="what"/>
<xsl:variable name="test-text">
<xsl:call-template name="lower">
<xsl:with-param name="tolower" select="$text" />
</xsl:call-template>
</xsl:variable>
<xsl:variable name="test-what">
<xsl:call-template name="lower">
<xsl:with-param name="tolower" select="$what" />
</xsl:call-template>
</xsl:variable>
[blue]<xsl:analyze-string select="$test-text" regex="&lt;[^&gt;]*?&gt;">
<xsl:matching-substring>
<xsl:value-of select="." disable-output-escaping="yes" />
</xsl:matching-substring>
<xsl:non-matching-substring>
<xsl:analyze-string select="." regex="{$test-what}">
<xsl:matching-substring>
<font style="background-color:#66FF66"><xsl:value-of select="$test-what" disable-output-escaping="yes"/></font>
</xsl:matching-substring>
<xsl:non-matching-substring>
<xsl:value-of select="." />
</xsl:non-matching-substring>
</xsl:analyze-string>
</xsl:non-matching-substring>
</xsl:analyze-string>[/blue]
</xsl:template>
[/tt]