Improved the DocBuffer and DOM writers to where they are kind of usable.

[jsvc.git] / src / dolda / jsvc / next / HtmlWriter.java

diff --git a/src/dolda/jsvc/next/HtmlWriter.java b/src/dolda/jsvc/next/HtmlWriter.java
new file mode 100644 (file)
index 0000000..40e5d53
--- /dev/null
+++ b/src/dolda/jsvc/next/HtmlWriter.java
@@ -0,0 +1,46 @@
+package dolda.jsvc.next;
+
+import java.io.*;
+import org.w3c.dom.*;
+
+public class HtmlWriter extends XHtmlWriter {
+    public HtmlWriter(Document doc) {
+       super(doc);
+    }
+    
+    protected boolean asempty(ColumnWriter out, Element el) {
+       if(!super.asempty(out, el))
+           return(false);
+       String n = el.getTagName();
+       if(n.equals("br") || n.equals("hr") || n.equals("img") ||
+          n.equals("input"))
+           return(true);
+       return(false);
+    }
+    
+    protected void attribute(ColumnWriter out, Attr attr, int indent) throws IOException {
+       if(attr.getNamespaceURI() != null)
+           throw(new RuntimeException("HTML does not support non-null-NS attributes (" + attr.getNamespaceURI() + " encountered)"));
+       super.attribute(out, attr, indent);
+    }
+
+    protected void element(ColumnWriter out, Element el, int indent) throws IOException {
+       if(!el.getNamespaceURI().equals(Html.ns))
+           throw(new RuntimeException("HTML does not support non-HTML elements (namespace " + el.getNamespaceURI() + " encountered)"));
+       super.element(out, el, indent);
+    }
+
+    public void write(Writer out) throws IOException {
+       DocumentType dt = doc.getDoctype();
+       if(dt == null)
+           throw(new RuntimeException("Writing HTML requires an HTML document"));
+       if(!dt.getName().equals("html"))
+           throw(new RuntimeException("Writing HTML requires an HTML document, not `" + dt.getName() + "'"));
+       String pubid = dt.getPublicId();
+       if(pubid.equals("-//W3C//DTD XHTML 1.1//EN")) {
+       } else {
+           throw(new RuntimeException("Unimplemented HTML doctype `" + pubid));
+       }
+       super.write(out);
+    }
+}