heavily based on an example file distributed with XML_FOAF 0.2
* HTTP GET vars:
* foaf=uri - Used to determine the URI of a FOAF file.
* original=true - Simply dumps contents of $foaf
*
* @author Daniel O'Connor
* @author Davey Shafik
* @date 2004-06-07
* @version 0.0.2
* @bug XML_FOAF 0.2 has problems with named RDF nodes (ie, http://www.ahsonline.com.au/dod/FOAF.rdf).
* Davey knows, will be fixing this soon.
* @todo "Friends" component
* @todo Named URLs (DC metadata)
* @todo "View in FOAFNAUT/foafexplorer/other"
* @bug Full name !available incorrectly handled.
*/
/**
* FoafViewer: Parse an RDF FOAF file and extract information to render as HTML
* usage: <?plugin FoafViewer foaf=http://www.ahsonline.com.au/dod/rawksuga.rdf original=true?>
* author: Daniel O'Connor
*
* phpwiki version based on version 0.0.2 by Daniel O'Connor
*
* TODO:
* - use a template.
* - use the phpwiki internal user foaf data (stored by a UserPreferences extension)
* - fix the pear FOAF Parser or we'll write our own (based on our XmlParser)
*/
class WikiPlugin_FoafViewer
extends WikiPlugin
{
// The handler is handled okay. The only problem is that it still
// throws a fatal.
private function _error_handler($error)
{
if (strstr($error->errstr, "Failed opening required 'XML/FOAF/Parser.php'"))
return true;
elseif (strstr($error->errstr, 'No such file or directory'))
return true;
return false;
}
function getName()
{
return _("FoafViewer");
}
function getDescription()
{
return _("Parse an RDF FOAF file and extract information to render as HTML.");
}
function getDefaultArguments()
{
return array('foaf' => false, // the URI to parse
//'userid' => false,
'original' => false
);
}
function run($dbi, $argstr, &$request, $basepage)
{
/* ignore fatal on loading */
/*
global $ErrorManager;
$ErrorManager->pushErrorHandler(new WikiMethodCb($this,'_error_handler'));
*/
// Require the XML_FOAF_Parser class. This is a PEAR library not included with phpwiki.
// see doc/README.foaf
if (findFile('XML/FOAF/Parser.php', 'missing_ok'))
require_once 'XML/FOAF/Parser.php';
//$ErrorManager->popErrorHandler();
if (!class_exists('XML_FOAF_Parser'))
return $this->error(_("required PEAR library XML/FOAF/Parser.php not found in include_path"));
extract($this->getArgs($argstr, $request));
// Get our FOAF File from the foaf plugin argument or $_GET['foaf']
if (empty($foaf)) $foaf = $request->getArg('foaf');
$chooser = HTML::form(array('method' => 'get', 'action' => $request->getURLtoSelf()),
HTML::h4(_("FOAF File URI")),
HTML::input(array('id' => 'foaf', 'name' => 'foaf', 'type' => 'text', 'size' => '80', 'value' => $foaf)),
HTML::br(),
//HTML::p("Pretty HTML"),
HTML::input(array('id' => 'pretty', 'name' => 'pretty', 'type' => 'radio', 'checked' => 'checked'), _("Pretty HTML")),
//HTML::p("Original URL (Redirect)"),
HTML::input(array('id' => 'original', 'name' => 'original', 'type' => 'radio'), _("Original URL (Redirect)")),
HTML::br(),
HTML::input(array('type' => 'submit', 'value' => _("Parse FOAF")))
//HTML::label(array('for'=>'foaf'),"FOAF File URI"),
);
if (empty($foaf)) {
return $chooser;
} else {
//Error Checking
if (substr($foaf, 0, 7) != "http://") {
return $this->error(_("foaf must be a URI starting with http://"));
}
// Start of output
if (!empty($original)) {
$request->redirect($foaf);
} else {
$foaffile = url_get_contents($foaf);
if (!$foaffile) {
//TODO: get errormsg
return HTML(HTML::p("Resource isn't available: Something went wrong, probably a 404!"));
}
// Create new Parser object
$parser = new XML_FOAF_Parser;
// Parser FOAF into $foaffile
$parser->parseFromMem($foaffile);
$a = $parser->toArray();
$html = HTML(HTML::h1(@$a[0]["name"]),
HTML::table(
HTML::thead(),
HTML::tbody(
@$a[0]["title"] ?
HTML::tr(HTML::td(_("Title")),
HTML::td($a[0]["title"])) : null,
(@$a[0]["homepage"][0]) ?
$this->iterateHTML($a[0], "homepage", $a["dc"]) : null,
(@$a[0]["weblog"][0]) ?
$this->iterateHTML($a[0], "weblog", $a["dc"]) : null,
//This seems broken?
/*
HTML::tr(HTML::td("Full Name"),
(@$a[0]["name"][0]) ?
HTML::td(@$a[0]["name"]) :
(@$a[0]["firstname"][0] && @$a[0]["surname"][0]) ?
HTML::td(@$a[0]["firstname"][0] . " " . @$a[0]["surname"][0])
: null
*/
HTML::tr(HTML::td("Full Name"),
(@$a[0]["name"][0]) ?
HTML::td(@$a[0]["name"]) : null
),
(@$a[0]["nick"][0]) ?
$this->iterateHTML($a[0], "nick", $a["dc"])
: null,
(@$a[0]["mboxsha1sum"][0]) ?
$this->iterateHTML($a[0], "mboxsha1sum", $a["dc"])
: null,
(@$a[0]["depiction"][0]) ?
$this->iterateHTML($a[0], "depiction", $a["dc"])
: null,
(@$a[0]["seealso"][0]) ?
$this->iterateHTML($a[0], "seealso", $a["dc"])
: null,
HTML::tr(HTML::td("Source"),
HTML::td(
HTML::a(array('href' => @$foaf), "RDF")
)
)
)
)
);
if (DEBUG) {
$html->pushContent(HTML::hr(), $chooser);
}
return $html;
}
}
}
/**
* Renders array elements as HTML. May be used recursively.
*
* @param $array Source array
* @param $index Element Index to use.
* @param null $dc
* @return \RawXml
* @todo Make sure it can look more than 1 layer deep
* @todo Pass in dublincore metadata
*/
function iterateHTML($array, $index, $dc = NULL)
{
for ($i = 0; $i < count($array[$index]); $i++) {
//Cater for different types
$string = $array[$index][$i];
if ($index == "mboxsha1sum") {
$string = ''
. '![Plink - ' . $array[$index][$i] . '](http://beta.plink.org/images/plink.png)
';
} elseif ($index == "depiction") {
$string = '
';
} elseif ((substr($array[$index][$i], 0, 7) == "http://") || (substr($array[$index][$i], 0, 7) == "mailto:")) {
$string = '" . $string . " | ";
}
return HTML::raw($html);
}
}
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End: