index.php

<?php

# calculate base path
$path = explode("/", __FILE__);
array_pop( $path ); # lose filename
$base_dir = join( "/", $path );

require_once( "$base_dir/lib/TripleChecker.php" );

$prefs = array( 
	"cache"=>"$base_dir/cache",
	"namespaces"=>"$base_dir/etc/namespaces.tsv",
	"cacheUnknownNamespaces"=>false,
	"reloadCache"=>false,
	"cacheAge"=>14*24*60*60, # seconds,
);

require_once( "$base_dir/etc/template.php" );
#$_GET['uri'] = 'https://raw.github.com/structureddynamics/Bibliographic-Ontology-BIBO/1.3/bibo.xml.owl';
if( !isset( $_GET['uri'] ) )
{
	render_header("front","RDF Triple-Checker");
	print "<h1>RDF Triple-Checker</h1>";
	?>
<p>This tool helps find typos and common errors in RDF data.</p>

<p>Enter a URI or URL which will resolve to some RDF Triples.</p>
<form>
<table width='80%' style='margin:auto'>
<tr>
<td align='right'>URI/URL:</td><td width='100%'><input id='uri' name='uri' value='' style='width:100%' /></td></tr>
</table>
<div style='margin-top:0.5em'>Output: <label><input checked='checked' type='radio' name='output' value='html' /> HTML</label> <label><input type='radio' name='output' value='json'/> JSON</label></div>
<div><input style='margin-top:0.5em' value='Check' type='submit' /></div>
</form>

<p>Drag this <a class="bookmarklet" href="javascript:window.location = &quot;http://graphite.ecs.soton.ac.uk/checker/?uri=&quot;+encodeURIComponent(window.location.href);">3-Check</a> bookmarklet to your bookmarks to create a quick button for sending your current URL to triple-checker.</p>

	<?php
	render_footer();
	# lazy but workable solution to autoselect the input form, and if it doesn't work it's
	# nott he end of the world, just the end of this HTML document.
	print "<script type='text/javascript'>document.getElementById('uri').focus()</script>";
	exit;
}


$check_uri = $_GET["uri"];
$tc = new TripleChecker($prefs);
$result = $tc->checkURI( $check_uri );
if( @$_GET["output"]=="json" )
{
	header( "Content-type: application/json" );
	#print json_encode( $result, JSON_PRETTY_PRINT );
	print json_encode( $result );
	exit;
}


render_header( "results", htmlspecialchars( $result["uri"] )." - RDF Triple-Checker");
print "<h1>RDF Triple-Checker</h1>";
print "<form>
<table width='80%' style='margin:auto'>
<tr>
<td align='right'>URI/URL:</td><td width='100%'><input id='uri' name='uri' value='".htmlspecialchars($result["uri"])."' style='width:100%' /></td></tr>

</table>
<div style='margin-top:0.5em'>Output: <label><input checked='checked' type='radio' name='output' value='html' /> HTML</label> <label><input type='radio' name='output' value='json'/> JSON</label></div>
<div><input style='margin-top:0.5em' value='Check Again' type='submit' /></div>
</form>";

if( !$result["loaded"] )
{
	print "<div class='error'><h3>Error loading: ".htmlspecialchars($result["uri"])."</h3><ul><li>".join( "</li><li>",$result["load_errors"])."</li></ul></div>";
	render_footer();
	exit;
}

print "<div class='message'>Loaded ".$result["triples_count"]." triples</div>";
######################################################
# Compare namespaces to dictionary
######################################################

print "<h2>Namespaces</h2>";
print "<table class='results'>";
print "<tr>";
print "<th>Namespace</th>";
print "<th>Looks Legit?</th>";
print "</tr>";
foreach ( $result["namespaces"] as $ns=>$info )
{
	$nscell = "<td><a href='$ns'>".htmlspecialchars( $ns )."</a></td>";

	if( $info["found"] )
	{
		print "<tr class='good'>";
		print $nscell;
		print "<td>Matched common namespace. Prefix <strong>".$info["prefix"]."</strong></td>";
		print "</tr>";
		continue;
	}
	
	$nearest = $info["nearest"];
	if( $nearest["distance"] <= 3 )
	{
		print "<tr class='bad'>";
		print $nscell;
		print "<td>VERY close match to &lt;".$nearest["namespace"]."&gt; .. probable typo? <span class='diff'>[diff=".$nearest["distance"]."]</span></td>";
		print "</tr>";
		continue;
	}

	if( $nearest["distance"] <= 8 )
	{
		print "<tr class='bad'>";
		print $nscell;
		print "<td>Somewhat similar to &lt;".$nearest["namespace"]."&gt; .. possible typo? <span class='diff'>[diff=".$nearest["distance"]."]</span></td>";
		print "</tr>";
		continue;
	}

	print "<tr class='unknown'>";
	print $nscell;
	print "<td>No match to common namespaces</td>";
	print "</tr>";
}
print "</table>";

	
	
######################################################
# Check terms in namespaces
######################################################

	

print "<h2>Terms</h2>";

print "<table class='results'>";
print "<tr>";
print "<th>Count</th>";
print "<th>Type</th>";
print "<th style='text-align:right'>Namespace</th>";
print "<th>Term</th>";
print "<th colspan='2'>Looks Legit?</th>";
print "</tr>";
foreach ( $result["namespaces"] as $ns=>$nsinfo )
{	
	foreach( $nsinfo["terms"] as $term=>$terminfo )
	{
		if( !$nsinfo["loaded"] ) 
		{
			print "<tr class='unknown'>";
		}
		elseif( $terminfo["found"] )
		{
			print "<tr class='good'>";
		}
		else
		{
			print "<tr class='bad'>";
		}
		print "<td class='count'>".$terminfo["count"]."</td>";
		print "<td class='type'>".$terminfo["type"]."</td>";
		print "<td class='ns' style='text-align:right;font-size:80%'>".$ns."</td>";
		print "<td class='term'><a href='$ns$term'>$term</a></td>";
		if( !$nsinfo["loaded"] ) 
		{
			print "<td class='legit'>?</td>";
			print "<td class='comment'> - Namespace not loaded</td>";
		}
		elseif( $terminfo["found"] )
		{
			print "<td class='legit'>OK</td>";
			print "<td class='comment'> - Looks good.</td>";
		}
		elseif( $terminfo["nearest"]["distance"] <= 3 )
		{
			print "<td class='legit'>ERROR</td>";
			print "<td class='comment'> - VERY close match to &quot;".$terminfo["nearest"]["term"]."&quot; .. probable typo? <span class='diff'>[diff=".$terminfo["nearest"]["distance"]."]</span></td>";
		}
		elseif( $terminfo["nearest"]["distance"] <= 8 )
		{
			print "<td class='legit'>ERROR</td>";
			print "<td class='comment'> - Possible match to &quot;".$terminfo["nearest"]["term"]."&quot; .. probable typo? <span class='diff'>[diff=".$terminfo["nearest"]["distance"]."]</span></td>";
		}
		else
		{
			print "<td class='legit'>ERROR</td>";
			print "<td class='comment'> - No near matches found</td>";
		}

			
		print "</tr>";
	}

}
print "</table>";
#print "<pre style='text-align:left'>".htmlspecialchars( print_r( $result ,true))."</pre>";

if( sizeof( $result["datatype_errors"] ) )
{
	print "<h2>Literals</h2>";

	print "<table class='results'>";
	print "<tr>";
	print "<th>Datatype</th>";
	print "<th>Value</th>";
	print "<th>Issues</th>";
	print "</tr>";

	foreach( $result["datatype_errors"] as $datatype=>$datatype_errors )
	{
		$rows = 0;
		foreach( $datatype_errors as $literal=>$issues ) { $rows+=sizeof($issues); }
		print "<tr class='bad'>";
		print "<td class='datatype' rowspan='$rows'>".$datatype."</td>";
		$first_value = true;
		foreach( $datatype_errors as $literal=>$issues )
		{
			if( !$first_value ) { print "</tr><tr class='bad'>"; }
			print "<td rowspan='".sizeof($issues)."'>\"".htmlspecialchars($literal)."\"</td>";
			$first_issue = true;
			foreach( $issues as $issue=>$count )
			{
				if( !$first_issue ) { print "</tr><tr class='bad'>"; }
				print "<td>";
				print $issue;
				if( $count > 1 ) { print " ($count counts)"; }
				print "</td>";
				print "</tr>";
				$first_issue = false;
			}
			$first_value = false;
		}
	}
	print "</table>";
}


render_footer();

exit;