/// <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>Moves an alias node of array form to another schema into an array</summary>
/// <param name="propertyIt">the property iterator of the old schema (used to delete the property)</param>
/// <param name="childNode">the node to be moved</param>
/// <param name="baseArray">the base array for the array item</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards XMP errors</exception>
private static void TransplantArrayItemAlias(Iterator propertyIt, XMPNode childNode, XMPNode baseArray)
{
if (baseArray.GetOptions().IsArrayAltText())
{
if (childNode.GetOptions().GetHasLanguage())
{
throw new XMPException("Alias to x-default already has a language qualifier", XMPErrorConstants.Badxmp);
}
XMPNode langQual = new XMPNode(XMPConstConstants.XmlLang, XMPConstConstants.XDefault, null);
childNode.AddQualifier(langQual);
}
propertyIt.Remove();
childNode.SetName(XMPConstConstants.ArrayItemName);
baseArray.AddChild(childNode);
}
/// <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>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>
/// 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>Moves an alias node of array form to another schema into an array</summary>
/// <param name="propertyIt">the property iterator of the old schema (used to delete the property)</param>
/// <param name="childNode">the node to be moved</param>
/// <param name="baseArray">the base array for the array item</param>
/// <exception cref="Com.Adobe.Xmp.XMPException">Forwards XMP errors</exception>
private static void TransplantArrayItemAlias(Iterator propertyIt, XMPNode childNode, XMPNode baseArray)
{
if (baseArray.GetOptions().IsArrayAltText())
{
if (childNode.GetOptions().GetHasLanguage())
{
throw new XMPException("Alias to x-default already has a language qualifier", XMPErrorConstants.Badxmp);
}
XMPNode langQual = new XMPNode(XMPConstConstants.XmlLang, XMPConstConstants.XDefault, null);
childNode.AddQualifier(langQual);
}
propertyIt.Remove();
childNode.SetName(XMPConstConstants.ArrayItemName);
baseArray.AddChild(childNode);
}
/// <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>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;
}
