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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.xml
import Utility.sbToString
import collection.mutable.StringBuilder
/** 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.
*
* @author Burak Emir
* @version 1.0
*/
@SerialVersionUID(0 - 2518644165573446725L)
case class NamespaceBinding(prefix: String, uri: String, parent: NamespaceBinding) extends AnyRef
{
if (prefix == "")
throw new IllegalArgumentException("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 URI.
*
* @param _uri the input URI
* @return the prefix that is mapped to the input URI, or null
* if no prefix is mapped to the URI.
*/
def getPrefix(_uri: String): String =
if (_uri == uri) prefix else parent getPrefix _uri
override def toString(): String = sbToString(buildString(_, TopScope))
def buildString(stop: NamespaceBinding): String = sbToString(buildString(_, stop))
def buildString(sb: StringBuilder, stop: NamespaceBinding): Unit = {
if (this eq stop) return // contains?
val s = " xmlns%s=\"%s\"".format(
(if (prefix != null) ":" + prefix else ""),
(if (uri != null) uri else "")
)
parent.buildString(sb append s, stop) // copy(ignore)
}
}
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