private List <XElement> GetNccElements(MergeEntry me, List <XElement> smilElements)
{
var nccElements = me.NccElements.Select(Utils.CloneWithBaseUri).ToList();
//Set new id attributes on ncc elements, fixing references from smil <text> elements
foreach (var idAttr in nccElements
.SelectMany(e => e.DescendantsAndSelf())
.Select(e => e.Attribute("id"))
.Where(attr => attr != null))
{
var newId = $"NCCID{nccIdIndex:D5}";
nccIdIndex++;
//Find and fix smil <text> elements src attributes, that link to ncc elements
foreach (var textSrcAttr in smilElements
.Select(e => e.Element("text")?.Attribute("src"))
.Where(attr => Utils.IsSameFile(Utils.GetUri(attr), new Uri(me.Ncc.BaseUri))))
{
var textSrcUri = Utils.GetUri(textSrcAttr);
if (textSrcUri.Fragment == $"#{idAttr.Value}")
{
textSrcAttr.Value = $"{NccDocumentName}#{newId}";
}
}
idAttr.Value = newId;
}
//Fix <a> element descendants of ncc elements, that point to the smil file
foreach (var nccAHrefAttr in nccElements
.SelectMany(e => e.DescendantsAndSelf(e.Name.Namespace + "a"))
.Select(a => a.Attribute("href"))
.Where(href => href != null))
{
var uri = Utils.GetUri(nccAHrefAttr);
if (Utils.IsSameFile(uri, new Uri(me.Smil.BaseUri)))
{
nccAHrefAttr.Value = $"{GetSmilFileName(entryIndex)}{uri.Fragment}";
}
}
//Fix heading depth
foreach (var hd in nccElements.Where(Utils.IsHeading))
{
hd.Name = hd.Name.Namespace + $"h{Math.Min(me.Depth, 6)}";
}
return(nccElements);
}
private List <XElement> GetContentElements(MergeEntry me, List <XElement> smilElements)
{
var contentElements = me.TextElements.Select(Utils.CloneWithBaseUri).ToList();
if (contentElements.Any())
{
//Set new id attributes on content elements, fixing references from smil <text> elements
foreach (var idAttr in contentElements
.SelectMany(e => e.DescendantsAndSelf())
.Select(e => e.Attribute("id"))
.Where(attr => attr != null))
{
var newId = $"TEXTID{contentIdIndex:D5}";
contentIdIndex++;
//Find and fix smil <text> elements src attributes, that link to content elements
foreach (var textSrcAttr in smilElements
.Select(e => e.Element("text")?.Attribute("src"))
.Where(attr => me.ContentDocuments.Values.Any(cd =>
Utils.IsSameFile(Utils.GetUri(attr), new Uri(cd.BaseUri)))))
{
var textSrcUri = Utils.GetUri(textSrcAttr);
if (textSrcUri.Fragment == $"#{idAttr.Value}")
{
textSrcAttr.Value = $"{ContentDocumentName}#{newId}";
}
}
idAttr.Value = newId;
}
//Fix <a> element descendants of ncc elements, that point to the smil file
foreach (var contentAHrefAttr in contentElements
.SelectMany(e => e.DescendantsAndSelf(e.Name.Namespace + "a"))
.Select(a => a.Attribute("href"))
.Where(href => href != null))
{
var uri = Utils.GetUri(contentAHrefAttr);
if (Utils.IsSameFile(uri, new Uri(me.Smil.BaseUri)))
{
contentAHrefAttr.Value = $"{GetSmilFileName(entryIndex)}{uri.Fragment}";
}
}
}
return(contentElements);
}
/// <summary>
/// Gets macro <see cref="XElement"/>s representing an entire DTB
/// </summary>
/// <param name="ncc">The ncc <see cref="XDocument"/> of the DTB - must have <see cref="XObject.BaseUri"/> set</param>
/// <returns>The macro <see cref="XElement"/>s representing the DTB</returns>
public static IEnumerable <XElement> GetMacroElementsFromNcc(XDocument ncc)
{
return(MergeEntry.LoadMergeEntriesFromNcc(ncc).Select(me => me.MacroElement));
}
