1 files changed, 70 insertions, 0 deletions
diff --git a/src/library/scala/xml/NamespaceBinding.scala b/src/library/scala/xml/NamespaceBinding.scala
new file mode 100644
index 0000000000..3ad7c49957
--- /dev/null
+++ b/src/library/scala/xml/NamespaceBinding.scala
@@ -0,0 +1,70 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2002-2005, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |                                         **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id$
+
+package scala.xml;
+
+import Predef._;
+
+/** The class <code>NamespaceBinding</code> represents namespace bindings
+ *  and scopes. The binding for the default namespace is treated as a null
+ *  prefix. the absent namespace is represented with the null uri. Neither
+ *  prefix nor uri may be empty, which is not checked.
+ *
+ *  @version 1.0
+ *  @author Burak Emir
+ */
+[serializable]
+class NamespaceBinding(val prefix: String,
+                       val uri: String,
+                       val parent: NamespaceBinding) extends AnyRef {
+
+  private val serialVersionUID = 0 -  2518644165573446725L;
+
+  if (null != prefix && 0 == prefix.length())
+    error("zero length prefix not allowed");
+
+  def getURI(_prefix: String): String =
+    if (prefix == _prefix) uri else parent.getURI(_prefix);
+
+  /** Returns some prefix that is mapped to the prefix.
+   *
+   *  @param _uri
+   *  @return
+   */
+  def getPrefix(_uri: String): String =
+    if (_uri == uri) uri else parent.getURI(_uri);
+
+  override def toString(): String = {
+    val sb = new StringBuffer();
+    toString(sb, TopScope);
+    sb.toString();
+  }
+
+  def toString(stop: NamespaceBinding): String = {
+    val sb = new StringBuffer();
+    toString(sb, stop);
+    sb.toString();
+  }
+
+  def toString(sb:StringBuffer, stop:NamespaceBinding): Unit = {
+    if (this ne stop) { // contains?
+      sb.append(" xmlns");
+      if (prefix != null) {
+        sb.append(':').append(prefix)
+      }
+      sb.append('=')
+      .append('"')
+      .append(uri)
+      .append('"');
+      parent.toString(sb, stop); // copy(ignore)
+    }
+  }
+
+}