private Stream FindStreamFromPath(string path, out string storeLocalPath, out IFileStore fileStore)
{
var pathEnumerator = new PathFragmentEnumerator(path);
try { return(FindStream(path, pathEnumerator, out storeLocalPath, out fileStore)); }
catch (Exception) { throw new Exception($"The file '{path}' could not be found"); }
}
private IEnumerable <string> EnumerateFilesInNestedFilestores(string path)
{
var pathEnumerator = new PathFragmentEnumerator(path);
return(EnumerateNestedFilestores(path, pathEnumerator)
.SelectMany(s => s.EnumerateFiles(null))
.Select(s => FormatRootPath(path) + s));
}
private Stream FindStream(string fullPath, PathFragmentEnumerator fragmentEnumerator, out string storeLocalPath, out IFileStore fileStore, List <IFileStore> fileStoresToSearch = null)
{
fileStoresToSearch = fileStoresToSearch ?? fileStores;
var search = new List <IFileStore>(fileStoresToSearch.Count);
search.AddRange(fileStoresToSearch);
var localPath = string.Empty;
while (fragmentEnumerator.MoveNext())
{
localPath += fragmentEnumerator.Current;
var dirFrontier = search
.Where(s => s.DirectoryExists(localPath))
.ToList();
if (dirFrontier.Count == 0)
{
// no FileStore found that includes this path as a directory, but it might be a file
var fileFrontier = search
.Where(s => s.FileExists(localPath))
.ToList();
// none of our FileStores have this file
if (fileFrontier.Count == 0)
{
throw new Exception("Couldn't find the file");
}
if (fragmentEnumerator.HasNext)
{
// there's still more to the path
// recurse and try to find it inside the file we've found
var newFileStoreFrontier = fileFrontier
.Select(s => s.OpenFileEntryStream(localPath))
.Select(s => EstablishFileStore(localPath, s))
.ToList();
return(FindStream(fullPath, fragmentEnumerator, out storeLocalPath, out fileStore, newFileStoreFrontier));
}
else
{
storeLocalPath = localPath;
fileStore = fileFrontier.Last();
return(fileStore.OpenFileEntryStream(localPath));
}
}
localPath += "/";
}
throw new Exception("Couldn't find the file");
}
private IEnumerable <IFileStore> EnumerateNestedFilestores(string fullPath, PathFragmentEnumerator fragmentEnumerator, List <IFileStore> fileStoresToSearch = null)
{
fileStoresToSearch = fileStoresToSearch ?? fileStores;
var search = new List <IFileStore>(fileStoresToSearch.Count);
search.AddRange(fileStoresToSearch);
var localPath = string.Empty;
while (fragmentEnumerator.MoveNext())
{
localPath += fragmentEnumerator.Current;
var fileFrontier = search
.Where(s => s.FileExists(localPath))
.ToList();
if (fileFrontier.Count == 0)
{
var dirFrontier = search
.Where(s => s.DirectoryExists(localPath))
.ToList();
// no FileStore found that includes this path as a file, but it might be a directory
if (dirFrontier.Count == 0)
{
return(Enumerable.Empty <IFileStore>());
}
}
else
{
var newFileStoreFrontier = fileFrontier
.Select(s => s.OpenFileEntryStream(localPath))
.Select(s => EstablishFileStore(localPath, s))
.ToList();
if (fragmentEnumerator.HasNext)
{
// there's still more to the path
// recurse and try to find it inside the file we've found
return(EnumerateNestedFilestores(fullPath, fragmentEnumerator, newFileStoreFrontier));
}
else
{
return(newFileStoreFrontier);
}
}
localPath += "/";
}
return(Enumerable.Empty <IFileStore>());
}
