// ---------------------------------------------------------------------------------------------
// Namespace Functions
/// <seealso cref="Com.Adobe.Xmp.XMPSchemaRegistry.RegisterNamespace(string, string)"/>
/// <exception cref="Com.Adobe.Xmp.XMPException"/>
public string RegisterNamespace(string namespaceURI, string suggestedPrefix)
{
lock (this)
{
ParameterAsserts.AssertSchemaNS(namespaceURI);
ParameterAsserts.AssertPrefix(suggestedPrefix);
if (suggestedPrefix[suggestedPrefix.Length - 1] != ':')
{
suggestedPrefix += ':';
}
if (!Utils.IsXMLNameNS(Sharpen.Runtime.Substring(suggestedPrefix, 0, suggestedPrefix.Length - 1)))
{
throw new XMPException("The prefix is a bad XML name", XMPErrorConstants.Badxml);
}
string registeredPrefix = (string)namespaceToPrefixMap.Get(namespaceURI);
string registeredNS = (string)prefixToNamespaceMap.Get(suggestedPrefix);
if (registeredPrefix != null)
{
// Return the actual prefix
return(registeredPrefix);
}
else
{
if (registeredNS != null)
{
// the namespace is new, but the prefix is already engaged,
// we generate a new prefix out of the suggested
string generatedPrefix = suggestedPrefix;
for (int i = 1; prefixToNamespaceMap.ContainsKey(generatedPrefix); i++)
{
generatedPrefix = Sharpen.Runtime.Substring(suggestedPrefix, 0, suggestedPrefix.Length - 1) + "_" + i + "_:";
}
suggestedPrefix = generatedPrefix;
}
prefixToNamespaceMap.Put(suggestedPrefix, namespaceURI);
namespaceToPrefixMap.Put(namespaceURI, suggestedPrefix);
// Return the suggested prefix
return(suggestedPrefix);
}
}
}
