X-Git-Url: http://git.dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fdolda%2Fjsvc%2Fnext%2FDocBuffer.java;fp=src%2Fdolda%2Fjsvc%2Fnext%2FDocBuffer.java;h=432d8171ba7491844c1d855d004fc70454c0bd42;hb=816cbb00faa568491d867a28b9570f8018e088b1;hp=0000000000000000000000000000000000000000;hpb=bce78e9e695e185501a05474b4862fe30a45863f;p=jsvc.git

diff --git a/src/dolda/jsvc/next/DocBuffer.java b/src/dolda/jsvc/next/DocBuffer.java
new file mode 100644
index 0000000..432d817
--- /dev/null
+++ b/src/dolda/jsvc/next/DocBuffer.java
@@ -0,0 +1,73 @@
+package dolda.jsvc.next;
+
+import java.util.*;
+import org.w3c.dom.*;
+
+public class DocBuffer {
+    public final Document doc;
+    private final Map<String, Node> cursors = new HashMap<String, Node>();
+    public static final String ns = "jsvc:next:buffer";
+    
+    public DocBuffer(String ns, String root, String doctype, String pubid, String sysid) {
+	doc = DomUtil.document(ns, root, doctype, pubid, sysid);
+    }
+
+    public DocBuffer(String ns, String root) {
+	this(ns, root, null, null, null);
+    }
+    
+    private Node findcursor(Node c, String name) {
+	if(c instanceof Element) {
+	    Element el = (Element)c;
+	    if(el.getNamespaceURI().equals(ns) && el.getTagName().equals("cursor") && el.getAttributeNS(ns, "name").equals(name))
+		return(c);
+	}
+	for(Node n = c.getFirstChild(); n != null; n = n.getNextSibling()) {
+	    Node r = findcursor(n, name);
+	    if(r != null)
+		return(r);
+	}
+	return(null);
+    }
+
+    private Node cursor(String name) {
+	Node n;
+	if((n = cursors.get(name)) != null) {
+	    return(n);
+	}
+	if((n = findcursor(doc, name)) == null)
+	    return(null);
+	cursors.put(name, n);
+	return(n);
+    }
+    
+    public void insert(String cursor, Node n) {
+	Node c = cursor(cursor);
+	if(c == null)
+	    throw(new RuntimeException("No such cursor: `" + cursor + "'"));
+	c.getParentNode().insertBefore(c, doc.importNode(n, true));
+    }
+    
+    public Element makecursor(String name) {
+	Element el = doc.createElementNS(ns, "cursor");
+	Attr a = doc.createAttributeNS(ns, "name");
+	a.setValue(name);
+	el.setAttributeNodeNS(a);
+	return(el);
+    }
+
+    public Element el(String ns, String nm, Node contents, String... attrs) {
+	Element el = doc.createElementNS(ns, nm);
+	if(contents != null)
+	    el.appendChild(contents);
+	for(String attr : attrs) {
+	    int p = attr.indexOf('=');
+	    el.setAttribute(attr.substring(0, p), attr.substring(p + 1));
+	}
+	return(el);
+    }
+    
+    public Text text(String text) {
+	return(doc.createTextNode(text));
+    }
+}