/// <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 <c>xml:lang</c> attribute was dropped from an
/// <c>alt-text</c> item if the language was <c>x-default</c>.
/// </remarks>
/// <param name="dcSchema">the DC schema node</param>
/// <exception cref="XmpException">Thrown if normalization fails</exception>
private static void NormalizeDcArrays(XmpNode dcSchema)
{
for (var i = 1; i <= dcSchema.GetChildrenLength(); i++)
{
var currProp = dcSchema.GetChild(i);
var arrayForm = (PropertyOptions)_dcArrayForms[currProp.Name];
if (arrayForm == null)
{
continue;
}
if (currProp.Options.IsSimple)
{
// create a new array and add the current property as child,
// if it was formerly simple
var newArray = new XmpNode(currProp.Name, arrayForm);
currProp.Name = XmpConstants.ArrayItemName;
newArray.AddChild(currProp);
dcSchema.ReplaceChild(i, newArray);
// fix language alternatives
if (arrayForm.IsArrayAltText && !currProp.Options.HasLanguage)
{
var newLang = new XmpNode(XmpConstants.XmlLang, XmpConstants.XDefault, null);
currProp.AddQualifier(newLang);
}
}
else
{
// clear array options and add corrected array form if it has been an array before
currProp.Options.SetOption(PropertyOptions.ArrayFlag | PropertyOptions.ArrayOrderedFlag | PropertyOptions.ArrayAlternateFlag | PropertyOptions.ArrayAltTextFlag, false);
currProp.Options.MergeWith(arrayForm);
if (arrayForm.IsArrayAltText)
{
// applying for "dc:description", "dc:rights", "dc:title"
RepairAltText(currProp);
}
}
}
}
