/// <summary>
/// Register the standard aliases.
/// Note: This method is not lock because only called by the constructor.
/// </summary>
/// <exception cref="XmpException"> If the registrations of at least one alias fails. </exception>
private void RegisterStandardAliases() {
AliasOptions aliasToArrayOrdered = new AliasOptions();
aliasToArrayOrdered.ArrayOrdered = true;
AliasOptions aliasToArrayAltText = new AliasOptions();
aliasToArrayAltText.ArrayAltText = true;
// Aliases from XMP to DC.
RegisterAlias(NS_XMP, "Author", NS_DC, "creator", aliasToArrayOrdered);
RegisterAlias(NS_XMP, "Authors", NS_DC, "creator", null);
RegisterAlias(NS_XMP, "Description", NS_DC, "description", null);
RegisterAlias(NS_XMP, "Format", NS_DC, "format", null);
RegisterAlias(NS_XMP, "Keywords", NS_DC, "subject", null);
RegisterAlias(NS_XMP, "Locale", NS_DC, "language", null);
RegisterAlias(NS_XMP, "Title", NS_DC, "title", null);
RegisterAlias(NS_XMP_RIGHTS, "Copyright", NS_DC, "rights", null);
// Aliases from PDF to DC and XMP.
RegisterAlias(NS_PDF, "Author", NS_DC, "creator", aliasToArrayOrdered);
RegisterAlias(NS_PDF, "BaseURL", NS_XMP, "BaseURL", null);
RegisterAlias(NS_PDF, "CreationDate", NS_XMP, "CreateDate", null);
RegisterAlias(NS_PDF, "Creator", NS_XMP, "CreatorTool", null);
RegisterAlias(NS_PDF, "ModDate", NS_XMP, "ModifyDate", null);
RegisterAlias(NS_PDF, "Subject", NS_DC, "description", aliasToArrayAltText);
RegisterAlias(NS_PDF, "Title", NS_DC, "title", aliasToArrayAltText);
// Aliases from PHOTOSHOP to DC and XMP.
RegisterAlias(NS_PHOTOSHOP, "Author", NS_DC, "creator", aliasToArrayOrdered);
RegisterAlias(NS_PHOTOSHOP, "Caption", NS_DC, "description", aliasToArrayAltText);
RegisterAlias(NS_PHOTOSHOP, "Copyright", NS_DC, "rights", aliasToArrayAltText);
RegisterAlias(NS_PHOTOSHOP, "Keywords", NS_DC, "subject", null);
RegisterAlias(NS_PHOTOSHOP, "Marked", NS_XMP_RIGHTS, "Marked", null);
RegisterAlias(NS_PHOTOSHOP, "Title", NS_DC, "title", aliasToArrayAltText);
RegisterAlias(NS_PHOTOSHOP, "WebStatement", NS_XMP_RIGHTS, "WebStatement", null);
// Aliases from TIFF and EXIF to DC and XMP.
RegisterAlias(NS_TIFF, "Artist", NS_DC, "creator", aliasToArrayOrdered);
RegisterAlias(NS_TIFF, "Copyright", NS_DC, "rights", null);
RegisterAlias(NS_TIFF, "DateTime", NS_XMP, "ModifyDate", null);
RegisterAlias(NS_TIFF, "ImageDescription", NS_DC, "description", null);
RegisterAlias(NS_TIFF, "Software", NS_XMP, "CreatorTool", null);
// Aliases from PNG (Acrobat ImageCapture) to DC and XMP.
RegisterAlias(NS_PNG, "Author", NS_DC, "creator", aliasToArrayOrdered);
RegisterAlias(NS_PNG, "Copyright", NS_DC, "rights", aliasToArrayAltText);
RegisterAlias(NS_PNG, "CreationTime", NS_XMP, "CreateDate", null);
RegisterAlias(NS_PNG, "Description", NS_DC, "description", aliasToArrayAltText);
RegisterAlias(NS_PNG, "ModificationTime", NS_XMP, "ModifyDate", null);
RegisterAlias(NS_PNG, "Software", NS_XMP, "CreatorTool", null);
RegisterAlias(NS_PNG, "Title", NS_DC, "title", aliasToArrayAltText);
}
public XmpAliasInfoImpl(string @namespace, string prefix, string propName, AliasOptions aliasForm) {
_namespace = @namespace;
_prefix = prefix;
_propName = propName;
_aliasForm = aliasForm;
}
private void RegisterAlias(string aliasNs, string aliasProp, string actualNs, string actualProp,
AliasOptions aliasForm) {
ParameterAsserts.AssertSchemaNs(aliasNs);
ParameterAsserts.AssertPropName(aliasProp);
ParameterAsserts.AssertSchemaNs(actualNs);
ParameterAsserts.AssertPropName(actualProp);
// Fix the alias options
AliasOptions aliasOpts = aliasForm != null
? new AliasOptions(
XmpNodeUtils.VerifySetOptions(aliasForm.ToPropertyOptions(), null).
Options)
: new AliasOptions();
if (_regex.IsMatch(aliasProp) || _regex.IsMatch(actualProp)) {
throw new XmpException("Alias and actual property names must be simple", XmpError.BADXPATH);
}
// check if both namespaces are registered
string aliasPrefix = GetNamespacePrefix(aliasNs);
string actualPrefix = GetNamespacePrefix(actualNs);
if (aliasPrefix == null) {
throw new XmpException("Alias namespace is not registered", XmpError.BADSCHEMA);
}
if (actualPrefix == null) {
throw new XmpException("Actual namespace is not registered", XmpError.BADSCHEMA);
}
string key = aliasPrefix + aliasProp;
// check if alias is already existing
if (_aliasMap.Contains(key)) {
throw new XmpException("Alias is already existing", XmpError.BADPARAM);
}
if (_aliasMap.Contains(actualPrefix + actualProp)) {
throw new XmpException("Actual property is already an alias, use the base property",
XmpError.BADPARAM);
}
IXmpAliasInfo aliasInfo = new XmpAliasInfoImpl(actualNs, actualPrefix, actualProp, aliasOpts);
_aliasMap[key] = aliasInfo;
}
