// EMPTY
/// <summary>Normalizes a raw parsed XMPMeta-Object</summary>
/// <param name="xmp">the raw metadata object</param>
/// <param name="options">the parsing options</param>
/// <returns>Returns the normalized metadata object</returns>
/// <exception cref="Com.Adobe.Xmp.XMPException">Collects all severe processing errors.</exception>
internal static XMPMeta Process(XMPMetaImpl xmp, ParseOptions options)
{
XMPNode tree = xmp.GetRoot();
TouchUpDataModel(xmp);
MoveExplicitAliases(tree, options);
TweakOldXMP(tree);
DeleteEmptySchemas(tree);
return xmp;
}
/// <summary>Utility to find or create the array used by <code>SeparateArrayItems()</code>.</summary>
/// <param name="schemaNS">a the namespace fo the array</param>
/// <param name="arrayName">the name of the array</param>
/// <param name="arrayOptions">the options for the array if newly created</param>
/// <param name="xmp">the xmp object</param>
/// <returns>Returns the array node.</returns>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards exceptions</exception>
private static XMPNode SeparateFindCreateArray(string schemaNS, string arrayName, PropertyOptions arrayOptions, XMPMetaImpl xmp)
{
arrayOptions = XMPNodeUtils.VerifySetOptions(arrayOptions, null);
if (!arrayOptions.IsOnlyArrayOptions())
{
throw new XMPException("Options can only provide array form", XMPErrorConstants.Badoptions);
}
// Find the array node, make sure it is OK. Move the current children
// aside, to be readded later if kept.
XMPPath arrayPath = XMPPathParser.ExpandXPath(schemaNS, arrayName);
XMPNode arrayNode = XMPNodeUtils.FindNode(xmp.GetRoot(), arrayPath, false, null);
if (arrayNode != null)
{
// The array exists, make sure the form is compatible. Zero
// arrayForm means take what exists.
PropertyOptions arrayForm = arrayNode.GetOptions();
if (!arrayForm.IsArray() || arrayForm.IsArrayAlternate())
{
throw new XMPException("Named property must be non-alternate array", XMPErrorConstants.Badxpath);
}
if (arrayOptions.EqualArrayTypes(arrayForm))
{
throw new XMPException("Mismatch of specified and existing array form", XMPErrorConstants.Badxpath);
}
}
else
{
// *** Right error?
// The array does not exist, try to create it.
// don't modify the options handed into the method
arrayNode = XMPNodeUtils.FindNode(xmp.GetRoot(), arrayPath, true, arrayOptions.SetArray(true));
if (arrayNode == null)
{
throw new XMPException("Failed to create named array", XMPErrorConstants.Badxpath);
}
}
return arrayNode;
}
/// <summary>Visit all schemas to do general fixes and handle special cases.</summary>
/// <param name="xmp">the metadata object implementation</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Thrown if the normalisation fails.</exception>
private static void TouchUpDataModel(XMPMetaImpl xmp)
{
// make sure the DC schema is existing, because it might be needed within the normalization
// if not touched it will be removed by removeEmptySchemas
XMPNodeUtils.FindSchemaNode(xmp.GetRoot(), XMPConstConstants.NsDc, true);
// Do the special case fixes within each schema.
for (Iterator it = xmp.GetRoot().IterateChildren(); it.HasNext(); )
{
XMPNode currSchema = (XMPNode)it.Next();
if (XMPConstConstants.NsDc.Equals(currSchema.GetName()))
{
NormalizeDCArrays(currSchema);
}
else
{
if (XMPConstConstants.NsExif.Equals(currSchema.GetName()))
{
// Do a special case fix for exif:GPSTimeStamp.
FixGPSTimeStamp(currSchema);
XMPNode arrayNode = XMPNodeUtils.FindChildNode(currSchema, "exif:UserComment", false);
if (arrayNode != null)
{
RepairAltText(arrayNode);
}
}
else
{
if (XMPConstConstants.NsDm.Equals(currSchema.GetName()))
{
// Do a special case migration of xmpDM:copyright to
// dc:rights['x-default'].
XMPNode dmCopyright = XMPNodeUtils.FindChildNode(currSchema, "xmpDM:copyright", false);
if (dmCopyright != null)
{
MigrateAudioCopyright(xmp, dmCopyright);
}
}
else
{
if (XMPConstConstants.NsXmpRights.Equals(currSchema.GetName()))
{
XMPNode arrayNode = XMPNodeUtils.FindChildNode(currSchema, "xmpRights:UsageTerms", false);
if (arrayNode != null)
{
RepairAltText(arrayNode);
}
}
}
}
}
}
}
/// <summary>Constructor with optionsl initial values.</summary>
/// <remarks>
/// Constructor with optionsl initial values. If <code>propName</code> is provided,
/// <code>schemaNS</code> has also be provided.
/// </remarks>
/// <param name="xmp">the iterated metadata object.</param>
/// <param name="schemaNS">the iteration is reduced to this schema (optional)</param>
/// <param name="propPath">the iteration is redurce to this property within the <code>schemaNS</code></param>
/// <param name="options">
/// advanced iteration options, see
/// <see cref="Com.Adobe.Xmp.Options.IteratorOptions"/>
/// </param>
/// <exception cref="Com.Adobe.Xmp.XMPException">If the node defined by the paramters is not existing.</exception>
public XMPIteratorImpl(XMPMetaImpl xmp, string schemaNS, string propPath, IteratorOptions options)
{
// make sure that options is defined at least with defaults
this.options = options != null ? options : new IteratorOptions();
// the start node of the iteration depending on the schema and property filter
XMPNode startNode = null;
string initialPath = null;
bool baseSchema = schemaNS != null && schemaNS.Length > 0;
bool baseProperty = propPath != null && propPath.Length > 0;
if (!baseSchema && !baseProperty)
{
// complete tree will be iterated
startNode = xmp.GetRoot();
}
else
{
if (baseSchema && baseProperty)
{
// Schema and property node provided
XMPPath path = XMPPathParser.ExpandXPath(schemaNS, propPath);
// base path is the prop path without the property leaf
XMPPath basePath = new XMPPath();
for (int i = 0; i < path.Size() - 1; i++)
{
basePath.Add(path.GetSegment(i));
}
startNode = XMPNodeUtils.FindNode(xmp.GetRoot(), path, false, null);
baseNS = schemaNS;
initialPath = basePath.ToString();
}
else
{
if (baseSchema && !baseProperty)
{
// Only Schema provided
startNode = XMPNodeUtils.FindSchemaNode(xmp.GetRoot(), schemaNS, false);
}
else
{
// !baseSchema && baseProperty
// No schema but property provided -> error
throw new XMPException("Schema namespace URI is required", XMPErrorConstants.Badschema);
}
}
}
// create iterator
if (startNode != null)
{
if (!this.options.IsJustChildren())
{
nodeIterator = new XMPIteratorImpl.NodeIterator(this, startNode, initialPath, 1);
}
else
{
nodeIterator = new XMPIteratorImpl.NodeIteratorChildren(this, startNode, initialPath);
}
}
else
{
// create null iterator
nodeIterator = Sharpen.Collections.EmptyList().Iterator();
}
}
/// <summary>
/// Each of these parsing methods is responsible for recognizing an RDF
/// syntax production and adding the appropriate structure to the XMP tree.
/// </summary>
/// <remarks>
/// Each of these parsing methods is responsible for recognizing an RDF
/// syntax production and adding the appropriate structure to the XMP tree.
/// They simply return for success, failures will throw an exception.
/// </remarks>
/// <param name="xmp">the xmp metadata object that is generated</param>
/// <param name="rdfRdfNode">the top-level xml node</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">thown on parsing errors</exception>
internal static void Rdf_RDF(XMPMetaImpl xmp, XmlNode rdfRdfNode)
{
if (rdfRdfNode.HasAttributes())
{
Rdf_NodeElementList(xmp, xmp.GetRoot(), rdfRdfNode);
}
else
{
throw new XMPException("Invalid attributes of rdf:RDF element", XMPErrorConstants.Badrdf);
}
}
/// <summary>Adds a child node.</summary>
/// <param name="xmp">the xmp metadata object that is generated</param>
/// <param name="xmpParent">the parent xmp node</param>
/// <param name="xmlNode">the currently processed XML node</param>
/// <param name="value">Node value</param>
/// <param name="isTopLevel">Flag if the node is a top-level node</param>
/// <returns>Returns the newly created child node.</returns>
/// <exception cref="Com.Adobe.Xmp.XMPException">thown on parsing errors</exception>
private static XMPNode AddChildNode(XMPMetaImpl xmp, XMPNode xmpParent, XmlNode xmlNode, string value, bool isTopLevel)
{
XMPSchemaRegistry registry = XMPMetaFactory.GetSchemaRegistry();
string @namespace = xmlNode.NamespaceURI;
string childName;
if (@namespace != null)
{
if (XMPConstConstants.NsDcDeprecated.Equals(@namespace))
{
// Fix a legacy DC namespace
@namespace = XMPConstConstants.NsDc;
}
string prefix = registry.GetNamespacePrefix(@namespace);
if (prefix == null)
{
prefix = xmlNode.Prefix != null ? xmlNode.Prefix : DefaultPrefix;
prefix = registry.RegisterNamespace(@namespace, prefix);
}
childName = prefix + xmlNode.LocalName;
}
else
{
throw new XMPException("XML namespace required for all elements and attributes", XMPErrorConstants.Badrdf);
}
// create schema node if not already there
PropertyOptions childOptions = new PropertyOptions();
bool isAlias = false;
if (isTopLevel)
{
// Lookup the schema node, adjust the XMP parent pointer.
// Incoming parent must be the tree root.
XMPNode schemaNode = XMPNodeUtils.FindSchemaNode(xmp.GetRoot(), @namespace, DefaultPrefix, true);
schemaNode.SetImplicit(false);
// Clear the implicit node bit.
// need runtime check for proper 32 bit code.
xmpParent = schemaNode;
// If this is an alias set the alias flag in the node
// and the hasAliases flag in the tree.
if (registry.FindAlias(childName) != null)
{
isAlias = true;
xmp.GetRoot().SetHasAliases(true);
schemaNode.SetHasAliases(true);
}
}
// Make sure that this is not a duplicate of a named node.
bool isArrayItem = "rdf:li".Equals(childName);
bool isValueNode = "rdf:value".Equals(childName);
// Create XMP node and so some checks
XMPNode newChild = new XMPNode(childName, value, childOptions);
newChild.SetAlias(isAlias);
// Add the new child to the XMP parent node, a value node first.
if (!isValueNode)
{
xmpParent.AddChild(newChild);
}
else
{
xmpParent.AddChild(1, newChild);
}
if (isValueNode)
{
if (isTopLevel || !xmpParent.GetOptions().IsStruct())
{
throw new XMPException("Misplaced rdf:value element", XMPErrorConstants.Badrdf);
}
xmpParent.SetHasValueChild(true);
}
if (isArrayItem)
{
if (!xmpParent.GetOptions().IsArray())
{
throw new XMPException("Misplaced rdf:li element", XMPErrorConstants.Badrdf);
}
newChild.SetName(XMPConstConstants.ArrayItemName);
}
return newChild;
}
