private bool AcquireCoverPage()
{
// Find the corresponding chapter
// NOTE: Logically, one would assume that the cover should
// be found when the chapter type is "frontmatter", but not every
// book has a chapter as such. Therefore, we are going to use the first
// image we find, as the cover image.
for (int i = 0; i < Book.Chapters.Length; ++i)
{
// Find the first image
foreach (var block in Book.Chapters[i].Content.Blocks)
{
if (block.Type != "image")
{
continue;
}
Helper.Debug("Adding cover page");
// Obtain image path and filename
var image_path = Book.Directory +
Path.DirectorySeparatorChar +
Book.Chapters[i].FilePath +
Path.DirectorySeparatorChar +
block.Src;
var image_name = Path.GetFileName(image_path);
var image_content = File.ReadAllBytes(image_path);
// Shouldn't happen
if (IsCorruptImage(image_content))
{
Helper.Warning("You should redownload the book. Found corrupt image: " + image_name);
}
Helper.Debug("Adding image as cover: " + image_name);
Book.Images.Add(image_name, new HtmlImage
{
AbsoluteFilePath = image_path,
Content = image_content,
ID = "cover"
});
using var string_writer = new UTF8StringWriter();
using var writer = XmlWriter.Create(string_writer, Helper.XmlWriterSettings);
var title = "Cover Page";
var html = new HtmlGenerator(writer, title);
html.AddImage(image_name, block.Alt ?? image_name, true);
writer.Close();
// Only HTML and Title fields are populated for the cover page
Book.CoverPage = new Chapter
{
HTML = string_writer.ToString(),
Title = title
};
// We found the cover, return from function
return(true);
}
}
return(false);
}