public Book Load(Stream stream)
{
// attempt validation if we are sure it won't interfere
if (stream.CanSeek)
{
// validate the
Stream schema = Assembly.GetExecutingAssembly().GetManifestResourceStream("Medius.Model.book.xsd");
var v = new XmlValidator();
if (!v.Validate(schema, stream))
{
throw new InvalidDataException(
"Could not load book XML.\r\nCause(s):\r\n" +
string.Join("\r\n", v.Errors.Select(
e => string.Format(
"Line {0} Col {1}: {2}", e.Line, e.Column, e.Message
)
)
)
);
}
// rewind the stream
stream.Seek(0, SeekOrigin.Begin);
}
// I am aware that this is embarrasingly simple.
// it's called code reuse. (it's also called error-prone.)
return (Book)new XmlSerializer(typeof(Book)).Deserialize(stream);
}
public Project Import(string inputFilename)
{
Book book;
using (Stream output = new MemoryStream())
{
// read WP XML file
using (Stream wpFile = new FileStream(inputFilename, FileMode.Open))
using (Stream xslt = Assembly.GetExecutingAssembly().GetManifestResourceStream("Medius.Controllers.wp2book.xsl"))
{
// transform stream to stream
XmlTransformer.Transform(xslt, wpFile, output);
}
// rewind and validate
output.Seek(0, SeekOrigin.Begin);
using (Stream xsd = Assembly.GetExecutingAssembly().GetManifestResourceStream("Medius.Model.book.xsd"))
{
XmlValidator validator = new XmlValidator();
if (!validator.Validate(xsd, output))
{
throw new InvalidDataException(
"Could not load book XML.\r\nCause(s):\r\n" +
string.Join("\r\n", validator.Errors.Select(
e => string.Format(
"Line {0} Col {1}: {2}", e.Line, e.Column, e.Message
)
)
)
);
}
}
// rewind again and deserialize
output.Seek(0, SeekOrigin.Begin);
book = books.Load(output);
}
Project project = new Project();
project.Book = book;
return project;
}