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Author:
gwilson
Version:
1.2
Release Date:
6 Jan 2013
Category:
Date & Time

Description

Super simple way (read: rudimentary) to convert plain text strings that contain http:// or https:// URLs into clickable HTML hyperlinks, expanded on code originally from this thread - http://www.stylusstudio.com/xsllist/200305/post81170.html

Could probably do with some Regex instead of matching "http://" or "https://", but its was not necessary for my use.

XSLT

View Raw
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<!-- Converts any number of plain text URL strings into HTML formatted hyperlinks in a passage of text -->
<!-- Made by @george_wilson January 2013, updated December 2013 -->

<xsl:template name="hyperlink">
      <xsl:param name="string" select="string()" />

      <xsl:variable name="http">
        <xsl:choose>
          <xsl:when test="contains($string, 'http://')">
            <xsl:text>http://</xsl:text>
          </xsl:when><xsl:when test="contains($string, 'https://')">
            <xsl:text>https://</xsl:text>
          </xsl:when><xsl:otherwise>
            <xsl:text>false</xsl:text>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:variable>

      <xsl:choose>
        <xsl:when test="$http = 'false'">
          <!-- No links, output string -->
          <xsl:value-of select="$string"/>
        </xsl:when><xsl:otherwise>
          <!-- Links detected, replace them -->

          <!-- Set up variables -->
          <xsl:variable name="before" select="substring-before($string, $http)" />
          <xsl:variable name="after" select="substring-after($string, $http)" />
          <xsl:variable name="url" select="concat($http, substring-before($after,' '))"/>
          <xsl:variable name="rest" select="substring-after($string, $url)" />

          <!-- Output the text -->
          <xsl:value-of select="$before"/>

          <xsl:choose>
            <!-- If the url is at then end, $rest doesn't work -->
            <xsl:when test="substring-after($url,$http) != ''">
              <a href="{$url}" rel="nofollow">
                <xsl:value-of select="$url" />
              </a>
              <!-- Check the remainder for links -->
              <xsl:call-template name="hyperlink">
                <xsl:with-param name="string" select="$rest"/>
              </xsl:call-template>
            </xsl:when><xsl:otherwise>
              <a href="{$url}{$after}" rel="nofollow">
                <xsl:value-of select="$after" />
              </a>
            </xsl:otherwise>
          </xsl:choose>

        </xsl:otherwise>
      </xsl:choose>
</xsl:template>

</xsl:stylesheet>

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Server Requirements

  • PHP 5.3-5.6 or 7.0-7.1
  • PHP's LibXML module, with the XSLT extension enabled (--with-xsl)
  • MySQL 5.5 or above
  • An Apache or Litespeed webserver
  • Apache's mod_rewrite module or equivalent

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