155 lines
4.8 KiB
PHTML
155 lines
4.8 KiB
PHTML
<?
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gobal $IP;
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include( "./LocalSettings.php" );
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include( "$IP/Setup.php" );
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header( "Content-type: text/xml; charset={$wgInputEncoding}" );
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print "<";
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print "?xml version=\"1.0\" encoding=\"utf-8\"?";
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print ">";
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?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>texvc</title></head><body>
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<?
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print "<form method=\"post\" action=\"{$wgServer}{$wgScriptPath}/texvc_cgi.phtml\">"
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?>
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<textarea name='math' rows='10' cols='80'><?
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global $math;
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$math = preg_replace ("/\\\\\\\\/", '\\', $math);
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print $math;
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?></textarea><br /><input type="submit" value="Preview" name="preview" /></form>
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<?
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function xlinkToMathImage ( $tex, $outputhash )
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{
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global $wgMathPath;
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return "<img src=\"".$wgMathPath."/".$outputhash.".png\" alt=\"".wfEscapeHTML($tex)."\" />";
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}
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function texvc_cgi_renderMath( $tex )
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{
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global $wgMathDirectory, $wgTmpDirectory, $wgInputEncoding;
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$mf = wfMsg( "math_failure" );
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$munk = wfMsg( "math_unknown_error" );
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$image = "";
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$outhtml = "";
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$outtex = "";
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$fname = "texvc_cgi_renderMath";
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$md5 = md5($tex);
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$md5_sql = mysql_escape_string(pack("H32", $md5));
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$sql = "SELECT math_outputhash,math_html_conservativeness,math_html,math_mathml FROM math WHERE math_inputhash = '".$md5_sql."'";
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$res = wfQuery( $sql, $fname );
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if ( wfNumRows( $res ) == 0 )
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{
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$cmd = "./math/texvc ".escapeshellarg($wgTmpDirectory)." ".
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escapeshellarg($wgMathDirectory)." ".escapeshellarg($tex)." ".escapeshellarg($wgInputEncoding);
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$contents = `$cmd`;
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if (strlen($contents) == 0)
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return "<h3>".$mf." (".$munk."): ".wfEscapeHTML($tex)."</h3>";
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$retval = substr ($contents, 0, 1);
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if (($retval == "C") || ($retval == "M") || ($retval == "L")) {
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if ($retval == "C")
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$conservativeness = 2;
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else if ($retval == "M")
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$conservativeness = 1;
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else
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$conservativeness = 0;
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$outdata = substr ($contents, 33);
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$i = strpos($outdata, "\000");
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$outhtml = substr($outdata, 0, $i);
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$mathml = substr($outdata, $i+1);
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$sql_html = "'".mysql_escape_string($outhtml)."'";
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$sql_mathml = "'".mysql_escape_string($mathml)."'";
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} else if (($retval == "c") || ($retval == "m") || ($retval == "l")) {
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$outhtml = substr ($contents, 33);
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if ($retval == "c")
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$conservativeness = 2;
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else if ($retval == "m")
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$conservativeness = 1;
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else
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$conservativeness = 0;
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$sql_html = "'".mysql_escape_string($outhtml)."'";
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$mathml = '';
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$sql_mathml = 'NULL';
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} else if ($retval == "X") {
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$outhtml = '';
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$mathml = substr ($contents, 33);
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$sql_html = 'NULL';
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$sql_mathml = "'".mysql_escape_string($mathml)."'";
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$conservativeness = 0;
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} else if ($retval == "+") {
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$outhtml = '';
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$mathml = '';
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$sql_html = 'NULL';
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$sql_mathml = 'NULL';
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$conservativeness = 0;
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} else {
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if ($retval == "E")
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$errmsg = wfMsg( "math_lexing_error" );
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else if ($retval == "S")
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$errmsg = wfMsg( "math_syntax_error" );
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else if ($retval == "F")
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$errmsg = wfMsg( "math_unknown_function" );
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else
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$errmsg = $munk;
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return "<h3>".$mf." (".$errmsg.substr($contents, 1)."): ".wfEscapeHTML($tex)."</h3>";
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}
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$outmd5 = substr ($contents, 1, 32);
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if (!preg_match("/^[a-f0-9]{32}$/", $outmd5))
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return "<h3>".$mf." (".$munk."): ".wfEscapeHTML($tex)."</h3>";
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$outmd5_sql = mysql_escape_string(pack("H32", $outmd5));
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$sql = "INSERT INTO math VALUES ('".$md5_sql."', '".$outmd5_sql."', ".$conservativeness.", ".$sql_html.", ".$sql_mathml.")";
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$res = wfQuery( $sql, $fname );
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// we don't really care if it fails
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} else {
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$rpage = wfFetchObject ( $res );
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$outmd5 = unpack ("H32md5", $rpage->math_outputhash);
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$outmd5 = $outmd5 ['md5'];
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$outhtml = $rpage->math_html;
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$conservativeness = $rpage->math_html_conservativeness;
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$mathml = $rpage->math_mathml;
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}
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if ($mathml == '')
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$mathml = "<h3>Failed to generate MathML</h3>";
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else
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$mathml = "<h3>MathML</h3><math xmlns=\"http://www.w3.org/1998/Math/MathML\">$mathml</math>";
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$image = "<h3>Image</h3>" . xlinkToMathImage ( $tex, $outmd5 );
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$cmd = "./math/texvc_tex ".escapeshellarg($tex)." ".escapeshellarg($wgInputEncoding);
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$outtex = `$cmd`;
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if ( $outhtml == '' )
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$outhtml = "<h3>Failed to generate HTML</h3>";
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else
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if ( $conservativeness == 2)
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$outhtml = "<h3>HTML (conservative)</h3>" . $outhtml;
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else if ( $conservativeness == 1)
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$outhtml = "<h3>HTML (moderate)</h3>" . $outhtml;
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else
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$outhtml = "<h3>HTML (liberal)</h3>" . $outhtml;
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if ( $outtex == '' )
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$outtex = "<h3>Failed to generate TeX</h3>";
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else
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$outtex = "<h3>TeX</h3>" . wfEscapeHTML($outtex);
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return $outtex . $outhtml . $mathml . $image;
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}
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global $math;
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if ($math != '')
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print texvc_cgi_renderMath($math);
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?>
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</body></html>
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