/// <summary>
/// 保存OPF文件。
/// </summary>
private void SaveOPF()
{
//生成OPF文件
var filePath = Path.Combine(_directoryName, "content.opf").DeleteFile();
using (var writer = new XmlTextWriter(filePath, Encoding.UTF8))
{
writer.WriteStartDocument();
writer.WriteStartElement("package", "http://www.idpf.org/2007/opf");
writer.WriteAttributeString("xmlns:dc", "http://purl.org/dc/elements/1.1/");
writer.WriteAttributeString("unique-identifier", BookId);
writer.WriteAttributeString("version", "2.0");
//metadata
writer.WriteStartElement("metadata");
writer.WriteAttributeString("xmlns:opf", "http://www.idpf.org/2007/opf");
writer.WriteAttributeString("xmlns:dc", "http://purl.org/dc/elements/1.1/");
foreach (var property in typeof(DublinCore).GetEntityType().GetProperties())
{
var value = property.Get(DC)?.ToString();
if (!string.IsNullOrEmpty(value))
{
writer.WriteElementText($"dc:{property.Name.ToLower()}", value);
}
}
//默认首页和图片
var coverImage = Manifest.FirstOrDefault(x => x.IsCover && !x.IsSpine);
if (coverImage != null)
{
Metadata["cover"] = coverImage.Id;
}
foreach (var data in Metadata)
{
writer.WriteMetaElement(data.Key, data.Value);
}
writer.WriteEndElement();
//manifest
writer.WriteStartElement("manifest");
foreach (var manifest in Manifest)
{
writer.WriteStartElement("item");
writer.WriteAttributeString("id", manifest.Id);
writer.WriteAttributeString("href", manifest.Href);
writer.WriteAttributeString("media-type", manifest.MediaType);
writer.WriteEndElement();
}
writer.WriteEndElement();
//spine
writer.WriteStartElement("spine");
writer.WriteAttributeString("toc", "ncx");//NCX文件Id
var manifests = LoadSortManifest();
foreach (var manifest in manifests)
{
writer.WriteStartElement("itemref");
writer.WriteAttributeString("idref", manifest.Id);
if (manifest.IsCover)
{
writer.WriteAttributeString("linear", "no");
}
writer.WriteEndElement();
}
writer.WriteEndElement();
//guide
writer.WriteStartElement("guide");
//var guide = manifests.FirstOrDefault(x => x.IsCover);
//writer.WriteReferenceElement(guide, "cover");
var guide = manifests.FirstOrDefault(x => x.IsToc);
writer.WriteReferenceElement(guide, "toc");
writer.WriteEndElement();
//end
writer.WriteEndElement();
writer.WriteEndDocument();
}
}