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package com.jclark.xsl.om;
import java.util.Hashtable;
public class NameTableImpl implements NameTable {
private final
class NamespacePrefixMapImpl implements NamespacePrefixMap {
final private String[] bindings;
final private String defaultNS;
NamespacePrefixMapImpl() {
this.bindings = new String[0];
this.defaultNS = null;
}
private
NamespacePrefixMapImpl(String[] bindings, String defaultNS) {
this.bindings = bindings;
this.defaultNS = defaultNS;
}
public final
int getSize() {
return bindings.length >> 1;
}
public final
String getPrefix(int i) {
return bindings[i << 1];
}
public final
String getNamespace(int i) {
return bindings[(i << 1) | 1];
}
public final
String getPrefix(String namespace) {
for (int i = 1; i < bindings.length; i += 2) {
if (namespace.equals(bindings[i]))
return bindings[i - 1];
}
return null;
}
public final
String getNamespace(String prefix) {
for (int i = 0; i < bindings.length; i += 2) {
if (prefix.equals(bindings[i]))
return bindings[i + 1];
}
return null;
}
public final
String getDefaultNamespace() {
return defaultNS;
}
public
Name expandAttributeName(String name, Node node) throws XSLException {
int i = name.indexOf(':');
if (i == -1)
return createName(name);
if (i == 3 && name.regionMatches(0, "xml", 0, 3))
return createName(name, Name.XML_NAMESPACE);
for (int j = 0; j < bindings.length; j += 2) {
String prefix = bindings[j];
if (prefix.length() == i && name.regionMatches(0, prefix, 0, i))
return createName(name, bindings[j + 1]);
}
throw new XSLException("no such prefix \"" + name.substring(0, i) + '"', node);
}
public
Name expandElementTypeName(String name, Node node) throws XSLException {
int i = name.indexOf(':');
if (i == -1) {
if (defaultNS != null)
return createName(name, defaultNS);
else
return createName(name);
}
if (i == 3 && name.regionMatches(0, "xml", 0, 3))
return createName(name, Name.XML_NAMESPACE);
for (int j = 0; j < bindings.length; j += 2) {
String prefix = bindings[j];
if (prefix.length() == i && name.regionMatches(0, prefix, 0, i))
return createName(name, bindings[j + 1]);
}
throw new XSLException("no such prefix \"" + name.substring(0, i) + '"', node);
}
public
NamespacePrefixMap unbind(String prefix) {
for (int i = 0; i < bindings.length; i += 2) {
if (prefix.equals(bindings[i])) {
String[] newBindings = new String[bindings.length - 2];
System.arraycopy(bindings, 0, newBindings, 0, i);
System.arraycopy(bindings, i + 2, newBindings, i, bindings.length - i - 2);
return intern(new NamespacePrefixMapImpl(newBindings, defaultNS));
}
}
return this;
}
public
NamespacePrefixMap bind(String prefix, String namespace) {
int i;
for (i = 0; i < bindings.length; i += 2) {
int cmp = prefix.compareTo(bindings[i]);
if (cmp < 0)
break;
if (cmp == 0) {
if (namespace.equals(bindings[i + 1]))
return this;
String[] newBindings = (String[])bindings.clone();
newBindings[i + 1] = namespace;
return intern(new NamespacePrefixMapImpl(newBindings, defaultNS));
}
}
String[] newBindings = new String[bindings.length + 2];
System.arraycopy(bindings, 0, newBindings, 0, i);
newBindings[i] = prefix;
newBindings[i + 1] = namespace;
System.arraycopy(bindings, i, newBindings, i + 2, bindings.length - i);
return intern(new NamespacePrefixMapImpl(newBindings, defaultNS));
}
public
NamespacePrefixMap bindDefault(String namespace) {
if (namespace.equals(defaultNS))
return this;
return intern(new NamespacePrefixMapImpl(bindings, namespace));
}
public
NamespacePrefixMap unbindDefault() {
if (defaultNS == null)
return this;
return intern(new NamespacePrefixMapImpl(bindings, null));
}
public NameTable getNameTable() {
return NameTableImpl.this;
}
public
int hashCode() {
int h = defaultNS != null ? defaultNS.hashCode() : 0;
for (int i = 0; i < bindings.length; i++)
h ^= bindings[i].hashCode();
return h;
}
public
boolean equals(Object obj) {
if (obj == null || !(obj instanceof NamespacePrefixMapImpl))
return false;
NamespacePrefixMapImpl map = (NamespacePrefixMapImpl)obj;
if (defaultNS == null) {
if (map.defaultNS != null)
return false;
}
else if (!defaultNS.equals(map.defaultNS))
return false;
if (bindings.length != map.bindings.length)
return false;
for (int i = 0; i < bindings.length; i++) {
if (!bindings[i].equals(map.bindings[i]))
return false;
}
return true;
}
}
private
class NameImpl implements Name {
private String qName;
private String namespace;
private NameImpl canon;
NameImpl(String qName, String namespace) {
this.qName = qName;
this.namespace = namespace;
this.canon = this;
}
NameImpl(String qName, String namespace, NameImpl canon) {
this.qName = qName;
this.namespace = namespace;
this.canon = canon;
}
public String getNamespace() {
return namespace;
}
public String getLocalPart() {
return canon.qName;
}
public String getPrefix() {
int i = qName.indexOf(':');
if (i < 0)
return null;
return qName.substring(0, i);
}
public boolean equals(Object obj) {
if (obj != null && (obj instanceof NameImpl))
return ((NameImpl)obj).canon == canon;
return false;
}
public String toString() {
return qName;
}
public int hashCode() {
return System.identityHashCode(canon);
}
public Object getCreator() {
return NameTableImpl.this;
}
}
public Name createName(String qName, String namespace) {
Hashtable ns;
synchronized (namespaces) {
ns = (Hashtable)namespaces.get(namespace);
if (ns == null) {
ns = new Hashtable();
namespaces.put(namespace, ns);
}
}
return createName(ns, qName, namespace);
}
public Name createName(String nonQName) {
return createName(docNamespace, nonQName, null);
}
NameImpl createName(Hashtable ns, String qName, String namespace) {
synchronized (ns) {
NameImpl nm = (NameImpl)ns.get(qName);
if (nm == null) {
int i = qName.indexOf(':');
if (i == -1)
nm = new NameImpl(qName, namespace);
else
nm = new NameImpl(qName,
namespace,
createName(ns, qName.substring(i + 1), namespace));
ns.put(qName, nm);
}
return nm;
}
}
public NamespacePrefixMap getEmptyNamespacePrefixMap() {
return emptyMap;
}
NamespacePrefixMap intern(NamespacePrefixMap prefixMap) {
synchronized (prefixMaps) {
Object obj = prefixMaps.get(prefixMap);
if (obj != null)
return (NamespacePrefixMap)obj;
prefixMaps.put(prefixMap, prefixMap);
return prefixMap;
}
}
public NameTableImpl() {
prefixMaps.put(emptyMap, emptyMap);
}
private NamespacePrefixMap emptyMap = new NamespacePrefixMapImpl();
private Hashtable prefixMaps = new Hashtable();
private Hashtable namespaces = new Hashtable();
private Hashtable docNamespace = new Hashtable();
}
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