<?php
/*************************************************************************************
* ipodder.opml.class.php
* ---------
* Author: Rasheq Rahman (rasheq.rahman@gmail.com)
* Copyright: (c) 2005 Rasheq Rahman
* Release Version: 1.0.0
* Date Started: 2005/05/20
* ipodder.opml.class.php is a PHP class to convert an Ipodder (http://www.ipodder.org) OPML file into a simple HTML table that can be inserted into a web page. More complete documentation can be found at http://www.rasheqrahman.com/.
*
* The orginial code for this class was written by Joe Grossberg. See http://www.joegrossberg.com/archives/001966.html for details.
*
*************************************************************************************
*
*
* ipodder.opml.class.php is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This class is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ipodder.opml.class.php; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
************************************************************************************/
class OPMLtoHTML
{
var $index;
var $vals;
var $html = '';
/* Set the color scheme for alternating podcasts and alternating categories
In the ipodder hierarchy, podcasts are organized into categories. A category might have one, two, etc. podcasts. To make the tables easier to read, I have implemented logic that sets different color schemes for alternating categories and alternating podcasts. You can use Hexadecimal colors or CSS color names. A good list is provided by the W3 Consortium at http://www.w3schools.com/css/css_colornames.asp
*/
var $oddcategory_oddpodcast_color = "#D1CEF2"; // ex: category #1, podcast #1
var $oddcategory_evenpodcast_color = "#E3E1F7"; // ex: category #1, podcast #2
var $evencategory_oddpodcast_color = "#D8EDAF"; //ex: category #2, podcast #1
var $evencategory_evenpodcast_color = "#EEF7DD"; //ex: category #2, podcast #2
function OPMLtoHTML ($file)
{
$this->parse_opml($file);
$this->generate_table();
}
function parse_opml ($file)
{
$fp = fopen($file, 'r');
if (!$fp) return;
$xml = fread($fp, filesize($file));
fclose($fp);
$parser = xml_parser_create('');
$status = xml_parse_into_struct($parser, $xml, $this->vals, $this->index);
xml_parser_free($parser);
if (!$status) return;
return true;
}
function generate_table () // creates table from parsed OPML file
{
$expand = $this->vals[$this->index['EXPANSIONSTATE'][0]]['value'];
$expand = array_flip(preg_split('/,\s*/', $expand));
$category_count = 1; // counter to track category # for color formatting
$count = 0; // Not sure what this is used for but it was in joe's original script
foreach ($this->index['OUTLINE'] as $i)
{
$type = $this->vals[$i]['type'];
if ($type == 'cdata' or $i < $this->index['BODY'][0])
continue; //skips over header informaition in OMPL file
// code below is optional. You can use it create "indents" in the final HTML output so that code is nicely formatted
if (empty($first_depth))
$first_depth = $this->vals[$i]['level'] - 1;
$depth = $this->vals[$i]['level'] - $first_depth;
$indent = str_repeat(' ', $depth);
// when the last podcast is reached in each category, an extra row is added to provide a buffer for the next category.
if ($type == 'close')
{
$category_count++;
$this->html .= "<tr>\n<td height=".'"20px"'."></td>\n<td></td></tr>\n";
continue;
}
$count++;
/*
the text (podcast name or category name) and $feed (rss/xml feed for podcast as parsed from the OPML file
*/
$text = htmlentities($this->vals[$i]['attributes']['TEXT']);
$feed = htmlentities($this->vals[$i]['attributes']['URL']);
if ($type == 'complete')
{
/*
skip over the first entry which is just a link to add a new podcast to the category. This is hardcoded in HTML already.
*/
if ( preg_match("/\bClick to add your show to this listing\b/i", $text, $match))
{
continue;
}
/*
identifies whether a category # is even/odd and the podcast # is even/odd. Apply appropriate formatting based on class variables defined above.
*/
if ($category_count % 2)
($podcast_count % 2) ? $bgcolor = $this->oddcategory_oddpodcast_color : $bgcolor = $this->oddcategory_evenpodcast_color;
else
($podcast_count % 2) ? $bgcolor = $this->evencategory_oddpodcast_color : $bgcolor = $this->evencategory_evenpodcast_color;
//formatting for podcast feed
if ($feed)
{
$this->html .= "<tr> \n";
$this->html .= $indent . $indent . '<td width="50px" align="center" bgcolor ="'. $bgcolor. '"><a href="' . $feed . '"><img alt="Click to select feed" src="http://www.scripting.com/images/xmlIcon2.gif" border="0" height="14" width="36"></a></td>'."\n";
//formatting for podcast name/description
if ($text)
$this->html .= $indent . $indent . '<td width="650px" align="left" bgcolor="' . $bgcolor. '" cellpadding="3"><B>'. $text . '</B>';
$podcast_count++;
}
$this->html .= "</td>\n</tr>\n";
}
//formatting for category name
if ($type == 'open') // This for the section headers
{
$this->html .= '<tr><td colspan="2"><h3 align="left"><b>'. $text . "</b></h3></td></tr>\n";
$podcast_count = 1; // counter to track podcast # for color formatting
}
}
}
}
?>