public static List <EpubChapterRef> GetChapters(EpubBookRef bookRef, List <EpubNavigationPoint> navigationPoints)
{
List <EpubChapterRef> result = new List <EpubChapterRef>();
foreach (EpubNavigationPoint navigationPoint in navigationPoints)
{
string contentFileName;
string anchor;
int contentSourceAnchorCharIndex = navigationPoint.Content.Source.IndexOf('#');
if (contentSourceAnchorCharIndex == -1)
{
contentFileName = navigationPoint.Content.Source;
anchor = null;
}
else
{
contentFileName = navigationPoint.Content.Source.Substring(0, contentSourceAnchorCharIndex);
anchor = navigationPoint.Content.Source.Substring(contentSourceAnchorCharIndex + 1);
}
EpubTextContentFileRef htmlContentFileRef;
if (!bookRef.Content.Html.TryGetValue(contentFileName, out htmlContentFileRef))
{
throw new Exception(String.Format("Incorrect EPUB manifest: item with href = \"{0}\" is missing.", contentFileName));
}
EpubChapterRef chapterRef = new EpubChapterRef(htmlContentFileRef);
chapterRef.ContentFileName = contentFileName;
chapterRef.Anchor = anchor;
chapterRef.Title = navigationPoint.NavigationLabels.First().Text;
chapterRef.SubChapters = GetChapters(bookRef, navigationPoint.ChildNavigationPoints);
result.Add(chapterRef);
}
return(result);
}
public static List <EpubChapterRef> GetChapters(EpubBookRef bookRef, EpubSpine spine,
List <EpubNavigationPoint> navigationPoints)
{
var result = new List <EpubChapterRef>();
for (var s = 0; s < spine.Count; s++)
{
var itemRef = spine[s];
string contentFileName;
string anchor;
contentFileName = WebUtility.UrlDecode(bookRef.Schema.Package.Manifest
.FirstOrDefault(e => e.Id == itemRef.IdRef)?.Href);
anchor = null;
if (!bookRef.Content.Html.TryGetValue(contentFileName, out var htmlContentFileRef))
{
throw new Exception(string.Format("Incorrect EPUB manifest: item with href = \"{0}\" is missing.",
contentFileName));
}
var chapterRef = new EpubChapterRef(htmlContentFileRef);
chapterRef.ContentFileName = contentFileName;
chapterRef.Anchor = anchor;
chapterRef.Parent = null;
var navPoint = navigationPoints.LastOrDefault(nav =>
spine.Take(s + 1)
.Select(sp => bookRef.Schema.Package.Manifest.FirstOrDefault(e => e.Id == sp.IdRef)?.Href)
.Contains(nav.Content.Source.Split('#')[0]));
if (navPoint != null)
{
chapterRef.Title = navPoint.NavigationLabels.First().Text;
}
else
{
chapterRef.Title = $"Chapter {s + 1}";
}
chapterRef.SubChapters = new List <EpubChapterRef>();
result.Add(chapterRef);
}
return(result);
}
