/// <summary>
/// Tweak old XMP: Move an instance ID from rdf:about to the
/// <em>xmpMM:InstanceID</em> property.
/// </summary>
/// <remarks>
/// Tweak old XMP: Move an instance ID from rdf:about to the
/// <em>xmpMM:InstanceID</em> property. An old instance ID usually looks
/// like "uuid:bac965c4-9d87-11d9-9a30-000d936b79c4", plus InDesign
/// 3.0 wrote them like "bac965c4-9d87-11d9-9a30-000d936b79c4". If
/// the name looks like a UUID simply move it to <em>xmpMM:InstanceID</em>,
/// don't worry about any existing <em>xmpMM:InstanceID</em>. Both will
/// only be present when a newer file with the <em>xmpMM:InstanceID</em>
/// property is updated by an old app that uses <em>rdf:about</em>.
/// </remarks>
/// <param name="tree">the root of the metadata tree</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Thrown if tweaking fails.</exception>
private static void TweakOldXMP(XMPNode tree)
{
if (tree.GetName() != null && tree.GetName().Length >= Utils.UuidLength)
{
string nameStr = tree.GetName().ToLower();
if (nameStr.StartsWith("uuid:"))
{
nameStr = Sharpen.Runtime.Substring(nameStr, 5);
}
if (Utils.CheckUUIDFormat(nameStr))
{
// move UUID to xmpMM:InstanceID and remove it from the root node
XMPPath path = XMPPathParser.ExpandXPath(XMPConstConstants.NsXmpMm, "InstanceID");
XMPNode idNode = XMPNodeUtils.FindNode(tree, path, true, null);
if (idNode != null)
{
idNode.SetOptions(null);
// Clobber any existing xmpMM:InstanceID.
idNode.SetValue("uuid:" + nameStr);
idNode.RemoveChildren();
idNode.RemoveQualifiers();
tree.SetName(null);
}
else
{
throw new XMPException("Failure creating xmpMM:InstanceID", XMPErrorConstants.Internalfailure);
}
}
}
}
/// <seealso cref="Com.Adobe.Xmp.XMPUtils.AppendProperties(Com.Adobe.Xmp.XMPMeta, Com.Adobe.Xmp.XMPMeta, bool, bool)"/>
/// <param name="source">The source XMP object.</param>
/// <param name="destination">The destination XMP object.</param>
/// <param name="doAllProperties">Do internal properties in addition to external properties.</param>
/// <param name="replaceOldValues">Replace the values of existing properties.</param>
/// <param name="deleteEmptyValues">Delete destination values if source property is empty.</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards the Exceptions from the metadata processing</exception>
public static void AppendProperties(XMPMeta source, XMPMeta destination, bool doAllProperties, bool replaceOldValues, bool deleteEmptyValues)
{
ParameterAsserts.AssertImplementation(source);
ParameterAsserts.AssertImplementation(destination);
XMPMetaImpl src = (XMPMetaImpl)source;
XMPMetaImpl dest = (XMPMetaImpl)destination;
for (Iterator it = src.GetRoot().IterateChildren(); it.HasNext();)
{
XMPNode sourceSchema = (XMPNode)it.Next();
// Make sure we have a destination schema node
XMPNode destSchema = XMPNodeUtils.FindSchemaNode(dest.GetRoot(), sourceSchema.GetName(), false);
bool createdSchema = false;
if (destSchema == null)
{
destSchema = new XMPNode(sourceSchema.GetName(), sourceSchema.GetValue(), new PropertyOptions().SetSchemaNode(true));
dest.GetRoot().AddChild(destSchema);
createdSchema = true;
}
// Process the source schema's children.
for (Iterator ic = sourceSchema.IterateChildren(); ic.HasNext();)
{
XMPNode sourceProp = (XMPNode)ic.Next();
if (doAllProperties || !Utils.IsInternalProperty(sourceSchema.GetName(), sourceProp.GetName()))
{
AppendSubtree(dest, sourceProp, destSchema, replaceOldValues, deleteEmptyValues);
}
}
if (!destSchema.HasChildren() && (createdSchema || deleteEmptyValues))
{
// Don't create an empty schema / remove empty schema.
dest.GetRoot().RemoveChild(destSchema);
}
}
}
/// <summary>
/// Tweak old XMP: Move an instance ID from rdf:about to the
/// <em>xmpMM:InstanceID</em> property.
/// </summary>
/// <remarks>
/// Tweak old XMP: Move an instance ID from rdf:about to the
/// <em>xmpMM:InstanceID</em> property. An old instance ID usually looks
/// like "uuid:bac965c4-9d87-11d9-9a30-000d936b79c4", plus InDesign
/// 3.0 wrote them like "bac965c4-9d87-11d9-9a30-000d936b79c4". If
/// the name looks like a UUID simply move it to <em>xmpMM:InstanceID</em>,
/// don't worry about any existing <em>xmpMM:InstanceID</em>. Both will
/// only be present when a newer file with the <em>xmpMM:InstanceID</em>
/// property is updated by an old app that uses <em>rdf:about</em>.
/// </remarks>
/// <param name="tree">the root of the metadata tree</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Thrown if tweaking fails.</exception>
private static void TweakOldXMP(XMPNode tree)
{
if (tree.GetName() != null && tree.GetName().Length >= Utils.UuidLength)
{
string nameStr = tree.GetName().ToLower();
if (nameStr.StartsWith("uuid:"))
{
nameStr = Sharpen.Runtime.Substring(nameStr, 5);
}
if (Utils.CheckUUIDFormat(nameStr))
{
// move UUID to xmpMM:InstanceID and remove it from the root node
XMPPath path = XMPPathParser.ExpandXPath(XMPConstConstants.NsXmpMm, "InstanceID");
XMPNode idNode = XMPNodeUtils.FindNode(tree, path, true, null);
if (idNode != null)
{
idNode.SetOptions(null);
// Clobber any existing xmpMM:InstanceID.
idNode.SetValue("uuid:" + nameStr);
idNode.RemoveChildren();
idNode.RemoveQualifiers();
tree.SetName(null);
}
else
{
throw new XMPException("Failure creating xmpMM:InstanceID", XMPErrorConstants.Internalfailure);
}
}
}
}
/// <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>
/// Searches for a field selector in a node:
/// [fieldName="value] - an element in an array of structs, chosen by a field value.
/// </summary>
/// <remarks>
/// Searches for a field selector in a node:
/// [fieldName="value] - an element in an array of structs, chosen by a field value.
/// No implicit nodes are created by field selectors.
/// </remarks>
/// <param name="arrayNode"/>
/// <param name="fieldName"/>
/// <param name="fieldValue"/>
/// <returns>Returns the index of the field if found, otherwise -1.</returns>
/// <exception cref="Com.Adobe.Xmp.XMPException"></exception>
private static int LookupFieldSelector(XMPNode arrayNode, string fieldName, string fieldValue)
{
int result = -1;
for (int index = 1; index <= arrayNode.GetChildrenLength() && result < 0; index++)
{
XMPNode currItem = arrayNode.GetChild(index);
if (!currItem.GetOptions().IsStruct())
{
throw new XMPException("Field selector must be used on array of struct", XMPErrorConstants.Badxpath);
}
for (int f = 1; f <= currItem.GetChildrenLength(); f++)
{
XMPNode currField = currItem.GetChild(f);
if (!fieldName.Equals(currField.GetName()))
{
continue;
}
if (fieldValue.Equals(currField.GetValue()))
{
result = index;
break;
}
}
}
return(result);
}
/// <summary>Constructor</summary>
/// <param name="parentNode">the node which children shall be iterated.</param>
/// <param name="parentPath">the full path of the former node without the leaf node.</param>
public NodeIteratorChildren(XMPIteratorImpl _enclosing, XMPNode parentNode, string parentPath)
: base(_enclosing)
{
this._enclosing = _enclosing;
if (parentNode.GetOptions().IsSchemaNode())
{
this._enclosing.SetBaseNS(parentNode.GetName());
}
this.parentPath = this.AccumulatePath(parentNode, parentPath, 1);
this.childrenIterator = parentNode.IterateChildren();
}
/// <summary>
/// Undo the denormalization performed by the XMP used in Acrobat 5.<br />
/// If a Dublin Core array had only one item, it was serialized as a simple
/// property.
/// </summary>
/// <remarks>
/// Undo the denormalization performed by the XMP used in Acrobat 5.<br />
/// If a Dublin Core array had only one item, it was serialized as a simple
/// property. <br />
/// The <code>xml:lang</code> attribute was dropped from an
/// <code>alt-text</code> item if the language was <code>x-default</code>.
/// </remarks>
/// <param name="dcSchema">the DC schema node</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Thrown if normalization fails</exception>
private static void NormalizeDCArrays(XMPNode dcSchema)
{
for (int i = 1; i <= dcSchema.GetChildrenLength(); i++)
{
XMPNode currProp = dcSchema.GetChild(i);
PropertyOptions arrayForm = (PropertyOptions)dcArrayForms.Get(currProp.GetName());
if (arrayForm == null)
{
continue;
}
else
{
if (currProp.GetOptions().IsSimple())
{
// create a new array and add the current property as child,
// if it was formerly simple
XMPNode newArray = new XMPNode(currProp.GetName(), arrayForm);
currProp.SetName(XMPConstConstants.ArrayItemName);
newArray.AddChild(currProp);
dcSchema.ReplaceChild(i, newArray);
// fix language alternatives
if (arrayForm.IsArrayAltText() && !currProp.GetOptions().GetHasLanguage())
{
XMPNode newLang = new XMPNode(XMPConstConstants.XmlLang, XMPConstConstants.XDefault, null);
currProp.AddQualifier(newLang);
}
}
else
{
// clear array options and add corrected array form if it has been an array before
currProp.GetOptions().SetOption(PropertyOptions.Array | PropertyOptions.ArrayOrdered | PropertyOptions.ArrayAlternate | PropertyOptions.ArrayAltText, false);
currProp.GetOptions().MergeWith(arrayForm);
if (arrayForm.IsArrayAltText())
{
// applying for "dc:description", "dc:rights", "dc:title"
RepairAltText(currProp);
}
}
}
}
}
/// <summary>
/// Remove all schema children according to the flag
/// <code>doAllProperties</code>.
/// </summary>
/// <remarks>
/// Remove all schema children according to the flag
/// <code>doAllProperties</code>. Empty schemas are automatically remove
/// by <code>XMPNode</code>
/// </remarks>
/// <param name="schemaNode">a schema node</param>
/// <param name="doAllProperties">flag if all properties or only externals shall be removed.</param>
/// <returns>Returns true if the schema is empty after the operation.</returns>
private static bool RemoveSchemaChildren(XMPNode schemaNode, bool doAllProperties)
{
for (Iterator it = schemaNode.IterateChildren(); it.HasNext();)
{
XMPNode currProp = (XMPNode)it.Next();
if (doAllProperties || !Utils.IsInternalProperty(schemaNode.GetName(), currProp.GetName()))
{
it.Remove();
}
}
return(!schemaNode.HasChildren());
}
/// <summary>Constructor for the node iterator.</summary>
/// <param name="visitedNode">the currently visited node</param>
/// <param name="parentPath">the accumulated path of the node</param>
/// <param name="index">the index within the parent node (only for arrays)</param>
public NodeIterator(XMPIteratorImpl _enclosing, XMPNode visitedNode, string parentPath, int index)
{
this._enclosing = _enclosing;
// EMPTY
this.visitedNode = visitedNode;
this.state = XMPIteratorImpl.NodeIterator.IterateNode;
if (visitedNode.GetOptions().IsSchemaNode())
{
this._enclosing.SetBaseNS(visitedNode.GetName());
}
// for all but the root node and schema nodes
this.path = this.AccumulatePath(visitedNode, parentPath, index);
}
/// <summary>Prepares the next node to return if not already done.</summary>
/// <seealso cref="Sharpen.Iterator{E}.HasNext()"/>
public override bool HasNext()
{
if (this.GetReturnProperty() != null)
{
// hasNext has been called before
return(true);
}
else
{
if (this._enclosing.skipSiblings)
{
return(false);
}
else
{
if (this.childrenIterator.HasNext())
{
XMPNode child = (XMPNode)this.childrenIterator.Next();
this.index++;
string path = null;
if (child.GetOptions().IsSchemaNode())
{
this._enclosing.SetBaseNS(child.GetName());
}
else
{
if (child.GetParent() != null)
{
// for all but the root node and schema nodes
path = this.AccumulatePath(child, this.parentPath, this.index);
}
}
// report next property, skip not-leaf nodes in case options is set
if (!this._enclosing.GetOptions().IsJustLeafnodes() || !child.HasChildren())
{
this.SetReturnProperty(this.CreatePropertyInfo(child, this._enclosing.GetBaseNS(), path));
return(true);
}
else
{
return(this.HasNext());
}
}
else
{
return(false);
}
}
}
}
/// <param name="currNode">the node that will be added to the path.</param>
/// <param name="parentPath">the path up to this node.</param>
/// <param name="currentIndex">the current array index if an arrey is traversed</param>
/// <returns>Returns the updated path.</returns>
protected internal virtual string AccumulatePath(XMPNode currNode, string parentPath, int currentIndex)
{
string separator;
string segmentName;
if (currNode.GetParent() == null || currNode.GetOptions().IsSchemaNode())
{
return(null);
}
else
{
if (currNode.GetParent().GetOptions().IsArray())
{
separator = string.Empty;
segmentName = "[" + currentIndex.ToString() + "]";
}
else
{
separator = "/";
segmentName = currNode.GetName();
}
}
if (parentPath == null || parentPath.Length == 0)
{
return(segmentName);
}
else
{
if (this._enclosing.GetOptions().IsJustLeafname())
{
return(!segmentName.StartsWith("?") ? segmentName : Sharpen.Runtime.Substring(segmentName, 1));
}
else
{
// qualifier
return(parentPath + separator + segmentName);
}
}
}
/// <summary>The outermost call is special.</summary>
/// <remarks>
/// The outermost call is special. The names almost certainly differ. The
/// qualifiers (and hence options) will differ for an alias to the x-default
/// item of a langAlt array.
/// </remarks>
/// <param name="aliasNode">the alias node</param>
/// <param name="baseNode">the base node of the alias</param>
/// <param name="outerCall">marks the outer call of the recursion</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards XMP errors</exception>
private static void CompareAliasedSubtrees(XMPNode aliasNode, XMPNode baseNode, bool outerCall)
{
if (!aliasNode.GetValue().Equals(baseNode.GetValue()) || aliasNode.GetChildrenLength() != baseNode.GetChildrenLength())
{
throw new XMPException("Mismatch between alias and base nodes", XMPErrorConstants.Badxmp);
}
if (!outerCall && (!aliasNode.GetName().Equals(baseNode.GetName()) || !aliasNode.GetOptions().Equals(baseNode.GetOptions()) || aliasNode.GetQualifierLength() != baseNode.GetQualifierLength()))
{
throw new XMPException("Mismatch between alias and base nodes", XMPErrorConstants.Badxmp);
}
for (Iterator an = aliasNode.IterateChildren(), bn = baseNode.IterateChildren(); an.HasNext() && bn.HasNext();)
{
XMPNode aliasChild = (XMPNode)an.Next();
XMPNode baseChild = (XMPNode)bn.Next();
CompareAliasedSubtrees(aliasChild, baseChild, false);
}
for (Iterator an_1 = aliasNode.IterateQualifier(), bn_1 = baseNode.IterateQualifier(); an_1.HasNext() && bn_1.HasNext();)
{
XMPNode aliasQual = (XMPNode)an_1.Next();
XMPNode baseQual = (XMPNode)bn_1.Next();
CompareAliasedSubtrees(aliasQual, baseQual, false);
}
}
/// <summary>The outermost call is special.</summary>
/// <remarks>
/// The outermost call is special. The names almost certainly differ. The
/// qualifiers (and hence options) will differ for an alias to the x-default
/// item of a langAlt array.
/// </remarks>
/// <param name="aliasNode">the alias node</param>
/// <param name="baseNode">the base node of the alias</param>
/// <param name="outerCall">marks the outer call of the recursion</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards XMP errors</exception>
private static void CompareAliasedSubtrees(XMPNode aliasNode, XMPNode baseNode, bool outerCall)
{
if (!aliasNode.GetValue().Equals(baseNode.GetValue()) || aliasNode.GetChildrenLength() != baseNode.GetChildrenLength())
{
throw new XMPException("Mismatch between alias and base nodes", XMPErrorConstants.Badxmp);
}
if (!outerCall && (!aliasNode.GetName().Equals(baseNode.GetName()) || !aliasNode.GetOptions().Equals(baseNode.GetOptions()) || aliasNode.GetQualifierLength() != baseNode.GetQualifierLength()))
{
throw new XMPException("Mismatch between alias and base nodes", XMPErrorConstants.Badxmp);
}
for (Iterator an = aliasNode.IterateChildren(), bn = baseNode.IterateChildren(); an.HasNext() && bn.HasNext(); )
{
XMPNode aliasChild = (XMPNode)an.Next();
XMPNode baseChild = (XMPNode)bn.Next();
CompareAliasedSubtrees(aliasChild, baseChild, false);
}
for (Iterator an_1 = aliasNode.IterateQualifier(), bn_1 = baseNode.IterateQualifier(); an_1.HasNext() && bn_1.HasNext(); )
{
XMPNode aliasQual = (XMPNode)an_1.Next();
XMPNode baseQual = (XMPNode)bn_1.Next();
CompareAliasedSubtrees(aliasQual, baseQual, false);
}
}
/// <summary>
/// Searches for a qualifier selector in a node:
/// [?qualName="value"] - an element in an array, chosen by a qualifier value.
/// </summary>
/// <remarks>
/// Searches for a qualifier selector in a node:
/// [?qualName="value"] - an element in an array, chosen by a qualifier value.
/// No implicit nodes are created for qualifier selectors,
/// except for an alias to an x-default item.
/// </remarks>
/// <param name="arrayNode">an array node</param>
/// <param name="qualName">the qualifier name</param>
/// <param name="qualValue">the qualifier value</param>
/// <param name="aliasForm">
/// in case the qual selector results from an alias,
/// an x-default node is created if there has not been one.
/// </param>
/// <returns>Returns the index of th</returns>
/// <exception cref="Com.Adobe.Xmp.XMPException"></exception>
private static int LookupQualSelector(XMPNode arrayNode, string qualName, string qualValue, int aliasForm)
{
if (XMPConstConstants.XmlLang.Equals(qualName))
{
qualValue = Utils.NormalizeLangValue(qualValue);
int index = Com.Adobe.Xmp.Impl.XMPNodeUtils.LookupLanguageItem(arrayNode, qualValue);
if (index < 0 && (aliasForm & AliasOptions.PropArrayAltText) > 0)
{
XMPNode langNode = new XMPNode(XMPConstConstants.ArrayItemName, null);
XMPNode xdefault = new XMPNode(XMPConstConstants.XmlLang, XMPConstConstants.XDefault, null);
langNode.AddQualifier(xdefault);
arrayNode.AddChild(1, langNode);
return(1);
}
else
{
return(index);
}
}
else
{
for (int index = 1; index < arrayNode.GetChildrenLength(); index++)
{
XMPNode currItem = arrayNode.GetChild(index);
for (Iterator it = currItem.IterateQualifier(); it.HasNext();)
{
XMPNode qualifier = (XMPNode)it.Next();
if (qualName.Equals(qualifier.GetName()) && qualValue.Equals(qualifier.GetValue()))
{
return(index);
}
}
}
return(-1);
}
}
/// <summary>
/// Remove all schema children according to the flag
/// <code>doAllProperties</code>.
/// </summary>
/// <remarks>
/// Remove all schema children according to the flag
/// <code>doAllProperties</code>. Empty schemas are automatically remove
/// by <code>XMPNode</code>
/// </remarks>
/// <param name="schemaNode">a schema node</param>
/// <param name="doAllProperties">flag if all properties or only externals shall be removed.</param>
/// <returns>Returns true if the schema is empty after the operation.</returns>
private static bool RemoveSchemaChildren(XMPNode schemaNode, bool doAllProperties)
{
for (Iterator it = schemaNode.IterateChildren(); it.HasNext(); )
{
XMPNode currProp = (XMPNode)it.Next();
if (doAllProperties || !Utils.IsInternalProperty(schemaNode.GetName(), currProp.GetName()))
{
it.Remove();
}
}
return !schemaNode.HasChildren();
}
/// <summary>This is setting the value of a leaf node.</summary>
/// <param name="node">an XMPNode</param>
/// <param name="value">a value</param>
internal static void SetNodeValue(XMPNode node, object value)
{
string strValue = SerializeNodeValue(value);
if (!(node.GetOptions().IsQualifier() && XMPConstConstants.XmlLang.Equals(node.GetName())))
{
node.SetValue(strValue);
}
else
{
node.SetValue(Utils.NormalizeLangValue(strValue));
}
}
/// <summary>Writes all used namespaces of the subtree in node to the output.</summary>
/// <remarks>
/// Writes all used namespaces of the subtree in node to the output.
/// The subtree is recursivly traversed.
/// </remarks>
/// <param name="node">the root node of the subtree</param>
/// <param name="usedPrefixes">a set containing currently used prefixes</param>
/// <param name="indent">the current indent level</param>
/// <exception cref="System.IO.IOException">Forwards all writer exceptions.</exception>
private void DeclareUsedNamespaces(XMPNode node, HashSet<string> usedPrefixes, int indent)
{
if (node.GetOptions().IsSchemaNode())
{
// The schema node name is the URI, the value is the prefix.
string prefix = Sharpen.Runtime.Substring(node.GetValue(), 0, node.GetValue().Length - 1);
DeclareNamespace(prefix, node.GetName(), usedPrefixes, indent);
}
else
{
if (node.GetOptions().IsStruct())
{
for (Iterator it = node.IterateChildren(); it.HasNext(); )
{
XMPNode field = (XMPNode)it.Next();
DeclareNamespace(field.GetName(), null, usedPrefixes, indent);
}
}
}
for (Iterator it_1 = node.IterateChildren(); it_1.HasNext(); )
{
XMPNode child = (XMPNode)it_1.Next();
DeclareUsedNamespaces(child, usedPrefixes, indent);
}
for (Iterator it_2 = node.IterateQualifier(); it_2.HasNext(); )
{
XMPNode qualifier = (XMPNode)it_2.Next();
DeclareNamespace(qualifier.GetName(), null, usedPrefixes, indent);
DeclareUsedNamespaces(qualifier, usedPrefixes, indent);
}
}
/// <summary>
/// 7.2.7 propertyAttributeURIs
/// anyURI - ( coreSyntaxTerms | rdf:Description | rdf:li | oldTerms )
/// 7.2.11 nodeElement
/// start-element ( URI == nodeElementURIs,
/// attributes == set ( ( idAttr | nodeIdAttr | aboutAttr )?, propertyAttr* ) )
/// propertyEltList
/// end-element()
/// Process the attribute list for an RDF node element.
/// </summary>
/// <remarks>
/// 7.2.7 propertyAttributeURIs
/// anyURI - ( coreSyntaxTerms | rdf:Description | rdf:li | oldTerms )
/// 7.2.11 nodeElement
/// start-element ( URI == nodeElementURIs,
/// attributes == set ( ( idAttr | nodeIdAttr | aboutAttr )?, propertyAttr* ) )
/// propertyEltList
/// end-element()
/// Process the attribute list for an RDF node element. A property attribute URI is
/// anything other than an RDF term. The rdf:ID and rdf:nodeID attributes are simply ignored,
/// as are rdf:about attributes on inner nodes.
/// </remarks>
/// <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="isTopLevel">Flag if the node is a top-level node</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">thown on parsing errors</exception>
private static void Rdf_NodeElementAttrs(XMPMetaImpl xmp, XMPNode xmpParent, XmlNode xmlNode, bool isTopLevel)
{
// Used to detect attributes that are mutually exclusive.
int exclusiveAttrs = 0;
for (int i = 0; i < xmlNode.Attributes.Count; i++)
{
XmlNode attribute = xmlNode.Attributes.Item(i);
// quick hack, ns declarations do not appear in C++
// ignore "ID" without namespace
if ("xmlns".Equals(attribute.Prefix) || (attribute.Prefix == null && "xmlns".Equals(attribute.Name)))
{
continue;
}
int attrTerm = GetRDFTermKind(attribute);
switch (attrTerm)
{
case RdftermId:
case RdftermNodeId:
case RdftermAbout:
{
if (exclusiveAttrs > 0)
{
throw new XMPException("Mutally exclusive about, ID, nodeID attributes", XMPErrorConstants.Badrdf);
}
exclusiveAttrs++;
if (isTopLevel && (attrTerm == RdftermAbout))
{
// This is the rdf:about attribute on a top level node. Set
// the XMP tree name if
// it doesn't have a name yet. Make sure this name matches
// the XMP tree name.
if (xmpParent.GetName() != null && xmpParent.GetName().Length > 0)
{
if (!xmpParent.GetName().Equals(attribute.Value))
{
throw new XMPException("Mismatched top level rdf:about values", XMPErrorConstants.Badxmp);
}
}
else
{
xmpParent.SetName(attribute.Value);
}
}
break;
}
case RdftermOther:
{
AddChildNode(xmp, xmpParent, attribute, attribute.Value, isTopLevel);
break;
}
default:
{
throw new XMPException("Invalid nodeElement attribute", XMPErrorConstants.Badrdf);
}
}
}
}
/// <summary>Recursively handles the "value" for a node.</summary>
/// <remarks>
/// Recursively handles the "value" for a node. It does not matter if it is a
/// top level property, a field of a struct, or an item of an array. The
/// indent is that for the property element. An xml:lang qualifier is written
/// as an attribute of the property start tag, not by itself forcing the
/// qualified property form. The patterns below mostly ignore attribute
/// qualifiers like xml:lang. Except for the one struct case, attribute
/// qualifiers don't affect the output form.
/// <blockquote>
/// <pre>
/// <ns:UnqualifiedSimpleProperty>value</ns:UnqualifiedSimpleProperty>
/// <ns:UnqualifiedStructProperty> (If no rdf:resource qualifier)
/// <rdf:Description>
/// ... Fields, same forms as top level properties
/// </rdf:Description>
/// </ns:UnqualifiedStructProperty>
/// <ns:ResourceStructProperty rdf:resource="URI"
/// ... Fields as attributes
/// >
/// <ns:UnqualifiedArrayProperty>
/// <rdf:Bag> or Seq or Alt
/// ... Array items as rdf:li elements, same forms as top level properties
/// </rdf:Bag>
/// </ns:UnqualifiedArrayProperty>
/// <ns:QualifiedProperty>
/// <rdf:Description>
/// <rdf:value> ... Property "value" following the unqualified
/// forms ... </rdf:value>
/// ... Qualifiers looking like named struct fields
/// </rdf:Description>
/// </ns:QualifiedProperty>
/// </pre>
/// </blockquote>
/// </remarks>
/// <param name="node">the property node</param>
/// <param name="emitAsRDFValue">property shall be rendered as attribute rather than tag</param>
/// <param name="useCanonicalRDF">
/// use canonical form with inner description tag or
/// the compact form with rdf:ParseType="resource" attribute.
/// </param>
/// <param name="indent">the current indent level</param>
/// <exception cref="System.IO.IOException">Forwards all writer exceptions.</exception>
/// <exception cref="Com.Adobe.Xmp.XMPException">If "rdf:resource" and general qualifiers are mixed.</exception>
private void SerializeCanonicalRDFProperty(XMPNode node, bool useCanonicalRDF, bool emitAsRDFValue, int indent)
{
bool emitEndTag = true;
bool indentEndTag = true;
// Determine the XML element name. Open the start tag with the name and
// attribute qualifiers.
string elemName = node.GetName();
if (emitAsRDFValue)
{
elemName = "rdf:value";
}
else
{
if (XMPConstConstants.ArrayItemName.Equals(elemName))
{
elemName = "rdf:li";
}
}
WriteIndent(indent);
Write('<');
Write(elemName);
bool hasGeneralQualifiers = false;
bool hasRDFResourceQual = false;
for (Iterator it = node.IterateQualifier(); it.HasNext(); )
{
XMPNode qualifier = (XMPNode)it.Next();
if (!RdfAttrQualifier.Contains(qualifier.GetName()))
{
hasGeneralQualifiers = true;
}
else
{
hasRDFResourceQual = "rdf:resource".Equals(qualifier.GetName());
if (!emitAsRDFValue)
{
Write(' ');
Write(qualifier.GetName());
Write("=\"");
AppendNodeValue(qualifier.GetValue(), true);
Write('"');
}
}
}
// Process the property according to the standard patterns.
if (hasGeneralQualifiers && !emitAsRDFValue)
{
// This node has general, non-attribute, qualifiers. Emit using the
// qualified property form.
// ! The value is output by a recursive call ON THE SAME NODE with
// emitAsRDFValue set.
if (hasRDFResourceQual)
{
throw new XMPException("Can't mix rdf:resource and general qualifiers", XMPErrorConstants.Badrdf);
}
// Change serialization to canonical format with inner rdf:Description-tag
// depending on option
if (useCanonicalRDF)
{
Write(">");
WriteNewline();
indent++;
WriteIndent(indent);
Write(RdfStructStart);
Write(">");
}
else
{
Write(" rdf:parseType=\"Resource\">");
}
WriteNewline();
SerializeCanonicalRDFProperty(node, useCanonicalRDF, true, indent + 1);
for (Iterator it_1 = node.IterateQualifier(); it_1.HasNext(); )
{
XMPNode qualifier = (XMPNode)it_1.Next();
if (!RdfAttrQualifier.Contains(qualifier.GetName()))
{
SerializeCanonicalRDFProperty(qualifier, useCanonicalRDF, false, indent + 1);
}
}
if (useCanonicalRDF)
{
WriteIndent(indent);
Write(RdfStructEnd);
WriteNewline();
indent--;
}
}
else
{
// This node has no general qualifiers. Emit using an unqualified form.
if (!node.GetOptions().IsCompositeProperty())
{
// This is a simple property.
if (node.GetOptions().IsURI())
{
Write(" rdf:resource=\"");
AppendNodeValue(node.GetValue(), true);
Write("\"/>");
WriteNewline();
emitEndTag = false;
}
else
{
if (node.GetValue() == null || string.Empty.Equals(node.GetValue()))
{
Write("/>");
WriteNewline();
emitEndTag = false;
}
else
{
Write('>');
AppendNodeValue(node.GetValue(), false);
indentEndTag = false;
}
}
}
else
{
if (node.GetOptions().IsArray())
{
// This is an array.
Write('>');
WriteNewline();
EmitRDFArrayTag(node, true, indent + 1);
if (node.GetOptions().IsArrayAltText())
{
XMPNodeUtils.NormalizeLangArray(node);
}
for (Iterator it_1 = node.IterateChildren(); it_1.HasNext(); )
{
XMPNode child = (XMPNode)it_1.Next();
SerializeCanonicalRDFProperty(child, useCanonicalRDF, false, indent + 2);
}
EmitRDFArrayTag(node, false, indent + 1);
}
else
{
if (!hasRDFResourceQual)
{
// This is a "normal" struct, use the rdf:parseType="Resource" form.
if (!node.HasChildren())
{
// Change serialization to canonical format with inner rdf:Description-tag
// if option is set
if (useCanonicalRDF)
{
Write(">");
WriteNewline();
WriteIndent(indent + 1);
Write(RdfEmptyStruct);
}
else
{
Write(" rdf:parseType=\"Resource\"/>");
emitEndTag = false;
}
WriteNewline();
}
else
{
// Change serialization to canonical format with inner rdf:Description-tag
// if option is set
if (useCanonicalRDF)
{
Write(">");
WriteNewline();
indent++;
WriteIndent(indent);
Write(RdfStructStart);
Write(">");
}
else
{
Write(" rdf:parseType=\"Resource\">");
}
WriteNewline();
for (Iterator it_1 = node.IterateChildren(); it_1.HasNext(); )
{
XMPNode child = (XMPNode)it_1.Next();
SerializeCanonicalRDFProperty(child, useCanonicalRDF, false, indent + 1);
}
if (useCanonicalRDF)
{
WriteIndent(indent);
Write(RdfStructEnd);
WriteNewline();
indent--;
}
}
}
else
{
// This is a struct with an rdf:resource attribute, use the
// "empty property element" form.
for (Iterator it_1 = node.IterateChildren(); it_1.HasNext(); )
{
XMPNode child = (XMPNode)it_1.Next();
if (!CanBeRDFAttrProp(child))
{
throw new XMPException("Can't mix rdf:resource and complex fields", XMPErrorConstants.Badrdf);
}
WriteNewline();
WriteIndent(indent + 1);
Write(' ');
Write(child.GetName());
Write("=\"");
AppendNodeValue(child.GetValue(), true);
Write('"');
}
Write("/>");
WriteNewline();
emitEndTag = false;
}
}
}
}
// Emit the property element end tag.
if (emitEndTag)
{
if (indentEndTag)
{
WriteIndent(indent);
}
Write("</");
Write(elemName);
Write('>');
WriteNewline();
}
}
/// <summary>Constructor for the node iterator.</summary>
/// <param name="visitedNode">the currently visited node</param>
/// <param name="parentPath">the accumulated path of the node</param>
/// <param name="index">the index within the parent node (only for arrays)</param>
public NodeIterator(XMPIteratorImpl _enclosing, XMPNode visitedNode, string parentPath, int index)
{
this._enclosing = _enclosing;
// EMPTY
this.visitedNode = visitedNode;
this.state = XMPIteratorImpl.NodeIterator.IterateNode;
if (visitedNode.GetOptions().IsSchemaNode())
{
this._enclosing.SetBaseNS(visitedNode.GetName());
}
// for all but the root node and schema nodes
this.path = this.AccumulatePath(visitedNode, parentPath, index);
}
/// <summary>Visit all of the top level nodes looking for aliases.</summary>
/// <remarks>
/// Visit all of the top level nodes looking for aliases. If there is
/// no base, transplant the alias subtree. If there is a base and strict
/// aliasing is on, make sure the alias and base subtrees match.
/// </remarks>
/// <param name="tree">the root of the metadata tree</param>
/// <param name="options">th parsing options</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards XMP errors</exception>
private static void MoveExplicitAliases(XMPNode tree, ParseOptions options)
{
if (!tree.GetHasAliases())
{
return;
}
tree.SetHasAliases(false);
bool strictAliasing = options.GetStrictAliasing();
for (Iterator schemaIt = tree.GetUnmodifiableChildren().Iterator(); schemaIt.HasNext();)
{
XMPNode currSchema = (XMPNode)schemaIt.Next();
if (!currSchema.GetHasAliases())
{
continue;
}
for (Iterator propertyIt = currSchema.IterateChildren(); propertyIt.HasNext();)
{
XMPNode currProp = (XMPNode)propertyIt.Next();
if (!currProp.IsAlias())
{
continue;
}
currProp.SetAlias(false);
// Find the base path, look for the base schema and root node.
XMPAliasInfo info = XMPMetaFactory.GetSchemaRegistry().FindAlias(currProp.GetName());
if (info != null)
{
// find or create schema
XMPNode baseSchema = XMPNodeUtils.FindSchemaNode(tree, info.GetNamespace(), null, true);
baseSchema.SetImplicit(false);
XMPNode baseNode = XMPNodeUtils.FindChildNode(baseSchema, info.GetPrefix() + info.GetPropName(), false);
if (baseNode == null)
{
if (info.GetAliasForm().IsSimple())
{
// A top-to-top alias, transplant the property.
// change the alias property name to the base name
string qname = info.GetPrefix() + info.GetPropName();
currProp.SetName(qname);
baseSchema.AddChild(currProp);
// remove the alias property
propertyIt.Remove();
}
else
{
// An alias to an array item,
// create the array and transplant the property.
baseNode = new XMPNode(info.GetPrefix() + info.GetPropName(), info.GetAliasForm().ToPropertyOptions());
baseSchema.AddChild(baseNode);
TransplantArrayItemAlias(propertyIt, currProp, baseNode);
}
}
else
{
if (info.GetAliasForm().IsSimple())
{
// The base node does exist and this is a top-to-top alias.
// Check for conflicts if strict aliasing is on.
// Remove and delete the alias subtree.
if (strictAliasing)
{
CompareAliasedSubtrees(currProp, baseNode, true);
}
propertyIt.Remove();
}
else
{
// This is an alias to an array item and the array exists.
// Look for the aliased item.
// Then transplant or check & delete as appropriate.
XMPNode itemNode = null;
if (info.GetAliasForm().IsArrayAltText())
{
int xdIndex = XMPNodeUtils.LookupLanguageItem(baseNode, XMPConstConstants.XDefault);
if (xdIndex != -1)
{
itemNode = baseNode.GetChild(xdIndex);
}
}
else
{
if (baseNode.HasChildren())
{
itemNode = baseNode.GetChild(1);
}
}
if (itemNode == null)
{
TransplantArrayItemAlias(propertyIt, currProp, baseNode);
}
else
{
if (strictAliasing)
{
CompareAliasedSubtrees(currProp, itemNode, true);
}
propertyIt.Remove();
}
}
}
}
}
currSchema.SetHasAliases(false);
}
}
/// <summary>Compares two nodes including its children and qualifier.</summary>
/// <param name="leftNode">an <code>XMPNode</code></param>
/// <param name="rightNode">an <code>XMPNode</code></param>
/// <returns>Returns true if the nodes are equal, false otherwise.</returns>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards exceptions to the calling method.</exception>
private static bool ItemValuesMatch(XMPNode leftNode, XMPNode rightNode)
{
PropertyOptions leftForm = leftNode.GetOptions();
PropertyOptions rightForm = rightNode.GetOptions();
if (leftForm.Equals(rightForm))
{
return(false);
}
if (leftForm.GetOptions() == 0)
{
// Simple nodes, check the values and xml:lang qualifiers.
if (!leftNode.GetValue().Equals(rightNode.GetValue()))
{
return(false);
}
if (leftNode.GetOptions().GetHasLanguage() != rightNode.GetOptions().GetHasLanguage())
{
return(false);
}
if (leftNode.GetOptions().GetHasLanguage() && !leftNode.GetQualifier(1).GetValue().Equals(rightNode.GetQualifier(1).GetValue()))
{
return(false);
}
}
else
{
if (leftForm.IsStruct())
{
// Struct nodes, see if all fields match, ignoring order.
if (leftNode.GetChildrenLength() != rightNode.GetChildrenLength())
{
return(false);
}
for (Iterator it = leftNode.IterateChildren(); it.HasNext();)
{
XMPNode leftField = (XMPNode)it.Next();
XMPNode rightField = XMPNodeUtils.FindChildNode(rightNode, leftField.GetName(), false);
if (rightField == null || !ItemValuesMatch(leftField, rightField))
{
return(false);
}
}
}
else
{
// Array nodes, see if the "leftNode" values are present in the
// "rightNode", ignoring order, duplicates,
// and extra values in the rightNode-> The rightNode is the
// destination for AppendProperties.
System.Diagnostics.Debug.Assert(leftForm.IsArray());
for (Iterator il = leftNode.IterateChildren(); il.HasNext();)
{
XMPNode leftItem = (XMPNode)il.Next();
bool match = false;
for (Iterator ir = rightNode.IterateChildren(); ir.HasNext();)
{
XMPNode rightItem = (XMPNode)ir.Next();
if (ItemValuesMatch(leftItem, rightItem))
{
match = true;
break;
}
}
if (!match)
{
return(false);
}
}
}
}
return(true);
}
/// <param name="currNode">the node that will be added to the path.</param>
/// <param name="parentPath">the path up to this node.</param>
/// <param name="currentIndex">the current array index if an arrey is traversed</param>
/// <returns>Returns the updated path.</returns>
protected internal virtual string AccumulatePath(XMPNode currNode, string parentPath, int currentIndex)
{
string separator;
string segmentName;
if (currNode.GetParent() == null || currNode.GetOptions().IsSchemaNode())
{
return null;
}
else
{
if (currNode.GetParent().GetOptions().IsArray())
{
separator = string.Empty;
segmentName = "[" + currentIndex.ToString() + "]";
}
else
{
separator = "/";
segmentName = currNode.GetName();
}
}
if (parentPath == null || parentPath.Length == 0)
{
return segmentName;
}
else
{
if (this._enclosing.GetOptions().IsJustLeafname())
{
return !segmentName.StartsWith("?") ? segmentName : Sharpen.Runtime.Substring(segmentName, 1);
}
else
{
// qualifier
return parentPath + separator + segmentName;
}
}
}
/// <seealso cref="AppendProperties(Com.Adobe.Xmp.XMPMeta, Com.Adobe.Xmp.XMPMeta, bool, bool, bool)"/>
/// <param name="destXMP">The destination XMP object.</param>
/// <param name="sourceNode">the source node</param>
/// <param name="destParent">the parent of the destination node</param>
/// <param name="replaceOldValues">Replace the values of existing properties.</param>
/// <param name="deleteEmptyValues">
/// flag if properties with empty values should be deleted
/// in the destination object.
/// </param>
/// <exception cref="Com.Adobe.Xmp.XMPException"/>
private static void AppendSubtree(XMPMetaImpl destXMP, XMPNode sourceNode, XMPNode destParent, bool replaceOldValues, bool deleteEmptyValues)
{
XMPNode destNode = XMPNodeUtils.FindChildNode(destParent, sourceNode.GetName(), false);
bool valueIsEmpty = false;
if (deleteEmptyValues)
{
valueIsEmpty = sourceNode.GetOptions().IsSimple() ? sourceNode.GetValue() == null || sourceNode.GetValue().Length == 0 : !sourceNode.HasChildren();
}
if (deleteEmptyValues && valueIsEmpty)
{
if (destNode != null)
{
destParent.RemoveChild(destNode);
}
}
else
{
if (destNode == null)
{
// The one easy case, the destination does not exist.
destParent.AddChild((XMPNode)sourceNode.Clone());
}
else
{
if (replaceOldValues)
{
// The destination exists and should be replaced.
destXMP.SetNode(destNode, sourceNode.GetValue(), sourceNode.GetOptions(), true);
destParent.RemoveChild(destNode);
destNode = (XMPNode)sourceNode.Clone();
destParent.AddChild(destNode);
}
else
{
// The destination exists and is not totally replaced. Structs and
// arrays are merged.
PropertyOptions sourceForm = sourceNode.GetOptions();
PropertyOptions destForm = destNode.GetOptions();
if (sourceForm != destForm)
{
return;
}
if (sourceForm.IsStruct())
{
// To merge a struct process the fields recursively. E.g. add simple missing fields.
// The recursive call to AppendSubtree will handle deletion for fields with empty
// values.
for (Iterator it = sourceNode.IterateChildren(); it.HasNext();)
{
XMPNode sourceField = (XMPNode)it.Next();
AppendSubtree(destXMP, sourceField, destNode, replaceOldValues, deleteEmptyValues);
if (deleteEmptyValues && !destNode.HasChildren())
{
destParent.RemoveChild(destNode);
}
}
}
else
{
if (sourceForm.IsArrayAltText())
{
// Merge AltText arrays by the "xml:lang" qualifiers. Make sure x-default is first.
// Make a special check for deletion of empty values. Meaningful in AltText arrays
// because the "xml:lang" qualifier provides unambiguous source/dest correspondence.
for (Iterator it = sourceNode.IterateChildren(); it.HasNext();)
{
XMPNode sourceItem = (XMPNode)it.Next();
if (!sourceItem.HasQualifier() || !XMPConstConstants.XmlLang.Equals(sourceItem.GetQualifier(1).GetName()))
{
continue;
}
int destIndex = XMPNodeUtils.LookupLanguageItem(destNode, sourceItem.GetQualifier(1).GetValue());
if (deleteEmptyValues && (sourceItem.GetValue() == null || sourceItem.GetValue().Length == 0))
{
if (destIndex != -1)
{
destNode.RemoveChild(destIndex);
if (!destNode.HasChildren())
{
destParent.RemoveChild(destNode);
}
}
}
else
{
if (destIndex == -1)
{
// Not replacing, keep the existing item.
if (!XMPConstConstants.XDefault.Equals(sourceItem.GetQualifier(1).GetValue()) || !destNode.HasChildren())
{
sourceItem.CloneSubtree(destNode);
}
else
{
XMPNode destItem = new XMPNode(sourceItem.GetName(), sourceItem.GetValue(), sourceItem.GetOptions());
sourceItem.CloneSubtree(destItem);
destNode.AddChild(1, destItem);
}
}
}
}
}
else
{
if (sourceForm.IsArray())
{
// Merge other arrays by item values. Don't worry about order or duplicates. Source
// items with empty values do not cause deletion, that conflicts horribly with
// merging.
for (Iterator @is = sourceNode.IterateChildren(); @is.HasNext();)
{
XMPNode sourceItem = (XMPNode)@is.Next();
bool match = false;
for (Iterator id = destNode.IterateChildren(); id.HasNext();)
{
XMPNode destItem = (XMPNode)id.Next();
if (ItemValuesMatch(sourceItem, destItem))
{
match = true;
}
}
if (!match)
{
destNode = (XMPNode)sourceItem.Clone();
destParent.AddChild(destNode);
}
}
}
}
}
}
}
}
}
/// <summary>Constructor</summary>
/// <param name="parentNode">the node which children shall be iterated.</param>
/// <param name="parentPath">the full path of the former node without the leaf node.</param>
public NodeIteratorChildren(XMPIteratorImpl _enclosing, XMPNode parentNode, string parentPath)
: base(_enclosing)
{
this._enclosing = _enclosing;
if (parentNode.GetOptions().IsSchemaNode())
{
this._enclosing.SetBaseNS(parentNode.GetName());
}
this.parentPath = this.AccumulatePath(parentNode, parentPath, 1);
this.childrenIterator = parentNode.IterateChildren();
}
/// <summary>This is setting the value of a leaf node.</summary>
/// <param name="node">an XMPNode</param>
/// <param name="value">a value</param>
internal static void SetNodeValue(XMPNode node, object value)
{
string strValue = SerializeNodeValue(value);
if (!(node.GetOptions().IsQualifier() && XMPConstConstants.XmlLang.Equals(node.GetName())))
{
node.SetValue(strValue);
}
else
{
node.SetValue(Utils.NormalizeLangValue(strValue));
}
}
/// <seealso cref="AppendProperties(Com.Adobe.Xmp.XMPMeta, Com.Adobe.Xmp.XMPMeta, bool, bool, bool)"/>
/// <param name="destXMP">The destination XMP object.</param>
/// <param name="sourceNode">the source node</param>
/// <param name="destParent">the parent of the destination node</param>
/// <param name="replaceOldValues">Replace the values of existing properties.</param>
/// <param name="deleteEmptyValues">
/// flag if properties with empty values should be deleted
/// in the destination object.
/// </param>
/// <exception cref="Com.Adobe.Xmp.XMPException"/>
private static void AppendSubtree(XMPMetaImpl destXMP, XMPNode sourceNode, XMPNode destParent, bool replaceOldValues, bool deleteEmptyValues)
{
XMPNode destNode = XMPNodeUtils.FindChildNode(destParent, sourceNode.GetName(), false);
bool valueIsEmpty = false;
if (deleteEmptyValues)
{
valueIsEmpty = sourceNode.GetOptions().IsSimple() ? sourceNode.GetValue() == null || sourceNode.GetValue().Length == 0 : !sourceNode.HasChildren();
}
if (deleteEmptyValues && valueIsEmpty)
{
if (destNode != null)
{
destParent.RemoveChild(destNode);
}
}
else
{
if (destNode == null)
{
// The one easy case, the destination does not exist.
destParent.AddChild((XMPNode)sourceNode.Clone());
}
else
{
if (replaceOldValues)
{
// The destination exists and should be replaced.
destXMP.SetNode(destNode, sourceNode.GetValue(), sourceNode.GetOptions(), true);
destParent.RemoveChild(destNode);
destNode = (XMPNode)sourceNode.Clone();
destParent.AddChild(destNode);
}
else
{
// The destination exists and is not totally replaced. Structs and
// arrays are merged.
PropertyOptions sourceForm = sourceNode.GetOptions();
PropertyOptions destForm = destNode.GetOptions();
if (sourceForm != destForm)
{
return;
}
if (sourceForm.IsStruct())
{
// To merge a struct process the fields recursively. E.g. add simple missing fields.
// The recursive call to AppendSubtree will handle deletion for fields with empty
// values.
for (Iterator it = sourceNode.IterateChildren(); it.HasNext(); )
{
XMPNode sourceField = (XMPNode)it.Next();
AppendSubtree(destXMP, sourceField, destNode, replaceOldValues, deleteEmptyValues);
if (deleteEmptyValues && !destNode.HasChildren())
{
destParent.RemoveChild(destNode);
}
}
}
else
{
if (sourceForm.IsArrayAltText())
{
// Merge AltText arrays by the "xml:lang" qualifiers. Make sure x-default is first.
// Make a special check for deletion of empty values. Meaningful in AltText arrays
// because the "xml:lang" qualifier provides unambiguous source/dest correspondence.
for (Iterator it = sourceNode.IterateChildren(); it.HasNext(); )
{
XMPNode sourceItem = (XMPNode)it.Next();
if (!sourceItem.HasQualifier() || !XMPConstConstants.XmlLang.Equals(sourceItem.GetQualifier(1).GetName()))
{
continue;
}
int destIndex = XMPNodeUtils.LookupLanguageItem(destNode, sourceItem.GetQualifier(1).GetValue());
if (deleteEmptyValues && (sourceItem.GetValue() == null || sourceItem.GetValue().Length == 0))
{
if (destIndex != -1)
{
destNode.RemoveChild(destIndex);
if (!destNode.HasChildren())
{
destParent.RemoveChild(destNode);
}
}
}
else
{
if (destIndex == -1)
{
// Not replacing, keep the existing item.
if (!XMPConstConstants.XDefault.Equals(sourceItem.GetQualifier(1).GetValue()) || !destNode.HasChildren())
{
sourceItem.CloneSubtree(destNode);
}
else
{
XMPNode destItem = new XMPNode(sourceItem.GetName(), sourceItem.GetValue(), sourceItem.GetOptions());
sourceItem.CloneSubtree(destItem);
destNode.AddChild(1, destItem);
}
}
}
}
}
else
{
if (sourceForm.IsArray())
{
// Merge other arrays by item values. Don't worry about order or duplicates. Source
// items with empty values do not cause deletion, that conflicts horribly with
// merging.
for (Iterator @is = sourceNode.IterateChildren(); @is.HasNext(); )
{
XMPNode sourceItem = (XMPNode)@is.Next();
bool match = false;
for (Iterator id = destNode.IterateChildren(); id.HasNext(); )
{
XMPNode destItem = (XMPNode)id.Next();
if (ItemValuesMatch(sourceItem, destItem))
{
match = true;
}
}
if (!match)
{
destNode = (XMPNode)sourceItem.Clone();
destParent.AddChild(destNode);
}
}
}
}
}
}
}
}
}
/// <summary>
/// A node can be serialized as RDF-Attribute, if it meets the following conditions:
/// <ul>
/// <li>is not array item
/// <li>don't has qualifier
/// <li>is no URI
/// <li>is no composite property
/// </ul>
/// </summary>
/// <param name="node">an XMPNode</param>
/// <returns>Returns true if the node serialized as RDF-Attribute</returns>
private bool CanBeRDFAttrProp(XMPNode node)
{
return !node.HasQualifier() && !node.GetOptions().IsURI() && !node.GetOptions().IsCompositeProperty() && !XMPConstConstants.ArrayItemName.Equals(node.GetName());
}