[Rdfapi-php-svn] SF.net SVN: rdfapi-php: [516] trunk/rdfapi-php/api/syntax/N3Serializer.php

[<cw...@us...>]

Revision: 516
          http://rdfapi-php.svn.sourceforge.net/rdfapi-php/?rev=516&view=rev
Author:   cweiske
Date:     2007-08-13 08:59:46 -0700 (Mon, 13 Aug 2007)

Log Message:
-----------
Make serializing a bit more intelligent when quoting

Modified Paths:
--------------
    trunk/rdfapi-php/api/syntax/N3Serializer.php

Modified: trunk/rdfapi-php/api/syntax/N3Serializer.php
===================================================================
--- trunk/rdfapi-php/api/syntax/N3Serializer.php	2007-08-13 15:43:35 UTC (rev 515)
+++ trunk/rdfapi-php/api/syntax/N3Serializer.php	2007-08-13 15:59:46 UTC (rev 516)
@@ -410,11 +410,26 @@
 
             if (is_a($o, 'Literal')) {
                 $l = $o->getLabel();
-                if ( strpos($l, LINEFEED) === FALSE ) {
-                    $out.="\"$l\"";
+                if (strpos($l, LINEFEED) === false) {
+                    $long = false;
                 } else {
-                    $out.="\"\"\"$l\"\"\"";
+                    $long = true;
                 }
+
+                //try to be intelligent
+                $quoteSingle = strpos($l, '\'') !== false;
+                $quoteDouble = strpos($l, '"')  !== false;
+                if ($quoteSingle && !$quoteDouble) {
+                    $quoteChar = $long ? '"""' : '"';
+                } else if ($quoteDouble && !$quoteSingle) {
+                    $quoteChar = $long ? '\'\'\'' : '\'';
+                } else {
+                    //both quotation chars inside
+                    $quoteChar = $long ? '"""' : '"';
+                    $l = addslashes($l);
+                }
+                $out .= $quoteChar . $l . $quoteChar;
+
                 if ( $o->getLanguage()!='' ) {
                     $out.='@'.$o->getLanguage();
                 }


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