Merge pull request #128 from sauravbhattacharya001/refactor/deduplicate-escapeXml

refactor: deduplicate escapeXml across 5 layout/animator classes

Author: sauravbhattacharya001

Gvisual/src/gvisual/CircularLayout.java

@@ -515,8 +515,7 @@ public String toSvg() {
     }
 
     private String escapeXml(String s) {
-        return s.replace("&", "&amp;").replace("<", "&lt;")
-                .replace(">", "&gt;").replace("\"", "&quot;");
+        return ExportUtils.escapeXml(s);
     }
 
     private void ensureComputed() {

Gvisual/src/gvisual/ForceDirectedLayout.java

@@ -974,12 +974,8 @@ void applyRepulsion(int i, double px, double py,
      * Escapes special XML characters.
      */
     private static String escapeXml(String s) {
-        if (s == null) return "";
-        return s.replace("&", "&")
-                .replace("<", "&lt;")
-                .replace(">", "&gt;")
-                .replace("\"", "&quot;")
-                .replace("'", "&apos;");
+        return ExportUtils.escapeXml(s);
+    }
     }
 
 }

Gvisual/src/gvisual/GraphAlgorithmAnimator.java

@@ -824,9 +824,7 @@ private static String fmt(double v) {
     }
 
     private static String escapeXml(String s) {
-        if (s == null) return "";
-        return s.replace("&", "&amp;").replace("<", "&lt;")
-                .replace(">", "&gt;").replace("\"", "&quot;");
+        return ExportUtils.escapeXml(s);
     }
 
     private static String escapeJS(String s) {

Gvisual/src/gvisual/HierarchicalLayout.java

@@ -900,9 +900,6 @@ private void ensureComputed() {
     }
 
     private static String escapeXml(String s) {
-        return s.replace("&", "&")
-                .replace("<", "&lt;")
-                .replace(">", "&gt;")
-                .replace("\"", "&quot;");
+        return ExportUtils.escapeXml(s);
     }
 }

Gvisual/src/gvisual/SpectralLayout.java

@@ -345,8 +345,7 @@ public String toSvg(Graph<String, Edge> graph) {
     }
 
     private String escapeXml(String s) {
-        return s.replace("&", "&amp;").replace("<", "&lt;")
-                .replace(">", "&gt;").replace("\"", "&quot;");
+        return ExportUtils.escapeXml(s);
     }
 
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