private string NextPrefix()
{
if (_usedPrefixes == null)
{
return(_aliasBase + (++_tempNamespacePrefix));
}
while (_usedPrefixes.ContainsKey(++_tempNamespacePrefix))
{
;
}
return(_aliasBase + _tempNamespacePrefix);
}
private InternalHashtable ListUsedPrefixes(InternalHashtable nsList, string prefix)
{
InternalHashtable qnIndexes = new InternalHashtable();
int prefixLength = prefix.Length;
const string MaxInt32 = "2147483647";
foreach (string alias in _namespaces.Namespaces.Keys)
{
string name;
if (alias.Length > prefixLength)
{
name = alias;
if (name.Length > prefixLength && name.Length <= prefixLength + MaxInt32.Length && name.StartsWith(prefix, StringComparison.Ordinal))
{
bool numeric = true;
for (int j = prefixLength; j < name.Length; j++)
{
if (!Char.IsDigit(name, j))
{
numeric = false;
break;
}
}
if (numeric)
{
Int64 index = Int64.Parse(name.Substring(prefixLength), NumberStyles.Integer, CultureInfo.InvariantCulture);
if (index <= Int32.MaxValue)
{
Int32 newIndex = (Int32)index;
if (!qnIndexes.ContainsKey(newIndex))
{
qnIndexes.Add(newIndex, newIndex);
}
}
}
}
}
}
if (qnIndexes.Count > 0)
{
return(qnIndexes);
}
return(null);
}
/// <include file='doc\XmlSerializationWriter.uex' path='docs/doc[@for="XmlSerializationWriter.WriteStartElement5"]/*' />
protected void WriteStartElement(string name, string ns, object o, bool writePrefixed, XmlSerializerNamespaces xmlns)
{
if (o != null && _objectsInUse != null)
{
if (_objectsInUse.ContainsKey(o))
{
throw new InvalidOperationException(SR.Format(SR.XmlCircularReference, o.GetType().FullName));
}
_objectsInUse.Add(o, o);
}
string prefix = null;
bool needEmptyDefaultNamespace = false;
if (_namespaces != null)
{
foreach (string alias in _namespaces.Namespaces.Keys)
{
string aliasNs = (string)_namespaces.Namespaces[alias];
if (alias.Length > 0 && aliasNs == ns)
{
prefix = alias;
}
if (alias.Length == 0)
{
if (aliasNs == null || aliasNs.Length == 0)
{
needEmptyDefaultNamespace = true;
}
if (ns != aliasNs)
{
writePrefixed = true;
}
}
}
_usedPrefixes = ListUsedPrefixes(_namespaces.Namespaces, _aliasBase);
}
if (writePrefixed && prefix == null && ns != null && ns.Length > 0)
{
prefix = _w.LookupPrefix(ns);
if (prefix == null || prefix.Length == 0)
{
prefix = NextPrefix();
}
}
if (prefix == null && xmlns != null)
{
prefix = xmlns.LookupPrefix(ns);
}
if (needEmptyDefaultNamespace && prefix == null && ns != null && ns.Length != 0)
{
prefix = NextPrefix();
}
_w.WriteStartElement(prefix, name, ns);
if (_namespaces != null)
{
foreach (string alias in _namespaces.Namespaces.Keys)
{
string aliasNs = (string)_namespaces.Namespaces[alias];
if (alias.Length == 0 && (aliasNs == null || aliasNs.Length == 0))
{
continue;
}
if (aliasNs == null || aliasNs.Length == 0)
{
if (alias.Length > 0)
{
throw new InvalidOperationException(SR.Format(SR.XmlInvalidXmlns, alias));
}
WriteAttribute("xmlns", alias, null, aliasNs);
}
else
{
if (_w.LookupPrefix(aliasNs) == null)
{
// write the default namespace declaration only if we have not written it already, over wise we just ignore one provided by the user
if (prefix == null && alias.Length == 0)
{
break;
}
WriteAttribute("xmlns", alias, null, aliasNs);
}
}
}
}
WriteNamespaceDeclarations(xmlns);
}
private InternalHashtable ListUsedPrefixes(InternalHashtable nsList, string prefix)
{
InternalHashtable qnIndexes = new InternalHashtable();
int prefixLength = prefix.Length;
const string MaxInt32 = "2147483647";
foreach (string alias in _namespaces.Namespaces.Keys)
{
string name;
if (alias.Length > prefixLength)
{
name = alias;
if (name.Length > prefixLength && name.Length <= prefixLength + MaxInt32.Length && name.StartsWith(prefix, StringComparison.Ordinal))
{
bool numeric = true;
for (int j = prefixLength; j < name.Length; j++)
{
if (!Char.IsDigit(name, j))
{
numeric = false;
break;
}
}
if (numeric)
{
Int64 index = Int64.Parse(name.Substring(prefixLength), NumberStyles.Integer, CultureInfo.InvariantCulture);
if (index <= Int32.MaxValue)
{
Int32 newIndex = (Int32)index;
if (!qnIndexes.ContainsKey(newIndex))
{
qnIndexes.Add(newIndex, newIndex);
}
}
}
}
}
}
if (qnIndexes.Count > 0)
{
return qnIndexes;
}
return null;
}
