public ContentReader(Book book, ContentReaderParameters parameters, Log log)
{
string identifier = null;
if (parameters.Index > 0)
identifier = parameters.Index.ToString(CultureInfo.InvariantCulture);
else if (!string.IsNullOrEmpty(parameters.File))
identifier = parameters.File;
else if (!string.IsNullOrEmpty(parameters.Format))
identifier = parameters.Format;
var volume = book.GetVolume(identifier);
var files = new FileSource { Log = log };
Encoding encoding;
Content = files.Open(volume, out encoding);
if (parameters.WasStreamTypeSpecified)
encoding = parameters.GetEncoding();
try {
if (!parameters.UsingByteEncoding)
Reader = new StreamReader(Content, encoding);
} catch {
Content.Close();
throw;
}
}
Volume GetVolume(Book book, ContentReaderParameters parameters)
{
// Every volume can have more formats (MIME types) assigned. Choose the first one
// that starts with the specified value not to have to enter the entire MIME type
// including the charset part.
Volume volume;
if (parameters.Index > 0) {
volume = book.Volumes.ElementAt(parameters.Index);
} else if (!string.IsNullOrEmpty(parameters.File)) {
volume = book.Volumes.FirstOrDefault(item =>
item.URL.EndsWithCI(parameters.File));
if (volume == null)
throw new ApplicationException("File not available.");
} else if (!string.IsNullOrEmpty(parameters.Format)) {
volume = book.Volumes.FirstOrDefault(item => item.Formats.Any(
format => format.StartsWithII(parameters.Format)));
if (volume == null)
throw new ApplicationException("Format not available.");
} else {
volume = book.Volumes.First();
}
return volume;
}
public IContentReader GetContentReader(string path)
{
// If Get-Content receives the item from pipe dynamic parameters will be
// created by the drive provider of the current container.
var parameters = DynamicParameters as ContentReaderParameters;
if (parameters == null) {
parameters = new ContentReaderParameters();
var fileParameters = DynamicParameters as FileSystemContentDynamicParametersBase;
if (fileParameters != null)
parameters.Encoding = fileParameters.Encoding;
}
EnsureLog();
return new ContentReader(Cache.GetBook(path), parameters, Cache.Log);
}
