added naive html escaper

src/HtmlEscaper/HtmlEscaper.java

@@ -0,0 +1,20 @@
+package j2html.src.HtmlEscaper;
+
+public class HtmlEscaper {
+
+    public static String escape(String s) {
+        StringBuilder out = new StringBuilder(Math.max(16, s.length()));
+        for (int i = 0; i < s.length(); i++) {
+            char c = s.charAt(i);
+            if (c > 127 || c == '"' || c == '<' || c == '>' || c == '&') {
+                out.append("&#");
+                out.append((int) c);
+                out.append(';');
+            } else {
+                out.append(c);
+            }
+        }
+        return out.toString();
+    }
+
+}

src/attributes/Attribute.java

@@ -1,12 +1,14 @@
 package j2html.src.attributes;
 
+import static j2html.src.HtmlEscaper.HtmlEscaper.escape;
+
 public class Attribute {
     private String name;
     private String value;
 
     public Attribute(String name, String value) {
         this.name = name;
-        this.value = value;
+        this.value = escape(value);
     }
 
     public Attribute(String name) {

src/tags/Tag.java

@@ -12,7 +12,7 @@ public abstract class Tag {
 
     protected Tag(String tagType) {
         this.tag = tagType;
-        this.attributes = new ArrayList<Attribute>();
+        this.attributes = new ArrayList<>();
     }
 
     public void setParent(Tag parent) {

src/tags/Text.java

@@ -1,5 +1,7 @@
 package j2html.src.tags;
 
+import static j2html.src.HtmlEscaper.HtmlEscaper.escape;
+
 public class Text extends Tag {
 
 	public Text(String text) {
@@ -8,12 +10,14 @@ public class Text extends Tag {
 	
 	@Override
 	public String render(){
-		return tag;
+		return escape(tag);
 	}
 	
 	@Override
 	public String toString(){
 		return this.render();
 	}
+
+
 	
 }

test/testPerformance/RenderSpeed.java

@@ -0,0 +1,44 @@
+package j2html.test.testPerformance;
+
+import org.junit.Test;
+
+import static j2html.src.tags.TagCreator.*;
+
+public class RenderSpeed {
+
+    private String renderTest(int i) {
+        return html().with(
+                head().with(
+                        title().withText("Test " + i)
+                ),
+                body().with(
+                        header().with(
+                                h1().withText("Test Header")
+                        ),
+                        main().with(
+                                h2().withText("Test Form"),
+                                div().with(
+                                        input().withType("email").withName("email").withPlaceholder("Email"),
+                                        input().withType("password").withName("password").withPlaceholder("password"),
+                                        button().withType("submit").withText("Login")
+                                )
+                        ),
+                        footer().withText("Test Footer"),
+                        script().withSrc("/testScript.js")
+                )
+        ).render();
+    }
+
+    @Test
+    public void testRenderSpeed() {
+        long startTime = System.nanoTime();
+        int pages = 100000;
+        for(int i = 0; i < pages; i++){
+            String testString = renderTest(i);
+        }
+        long endTime = System.nanoTime();
+        long duration = (endTime - startTime)/1000000;
+        System.out.print("Rendered 100000 pages in " + duration + "ms");
+    }
+
+}