public CacheableDataProvider(string storagePath)
{
Debug.WriteLine($"{nameof(storagePath)}: [{storagePath}]");
StoragePath = storagePath;
PortableDirectory.CreateDirectory(storagePath);
}
/// <inheritdoc />
public Stream FetchData(string url)
{
var cachedFilePath = Path.Combine(StoragePath, GetCachedFileName(url));
var cachedFilePathExists = PortableFile.Exists(cachedFilePath);
if ((FetchMode == FetchMode.Online) ||
((FetchMode == FetchMode.OnlineIfMissing) && !cachedFilePathExists))
{
var directoryName = Path.GetDirectoryName(cachedFilePath);
if (!String.IsNullOrWhiteSpace(directoryName))
{
PortableDirectory.CreateDirectory(directoryName);
}
using (var binaryReader = new BinaryReader(dataProvider.FetchData(url)))
{
using (var fileStream = PortableFile.Create(cachedFilePath))
{
binaryReader.BaseStream.CopyTo(fileStream);
}
}
}
cachedFilePathExists = PortableFile.Exists(cachedFilePath);
if (!cachedFilePathExists)
{
throw new FileNotInCacheException();
}
return(PortableFile.Open(cachedFilePath, PortableFileMode.Open));
}
public CacheableDataProvider()
{
#if PORTABLE
PortableDirectory.CreateDirectory(@"cache");
#else
Directory.CreateDirectory(@"cache");
#endif
}
public Stream FetchData(string url)
{
var cachedFilePath = GetCacheStoragePath() + GetCachedFileName(url);
#if PORTABLE
var cachedFilePathExists = PortableFile.Exists(cachedFilePath);
#else
var cachedFilePathExists = File.Exists(cachedFilePath);
#endif
if ((FetchMode == FetchMode.Online) ||
((FetchMode == FetchMode.OnlineIfMissing) && !cachedFilePathExists))
{
var directoryName = Path.GetDirectoryName(cachedFilePath);
if (!String.IsNullOrWhiteSpace(directoryName))
{
#if PORTABLE
PortableDirectory.CreateDirectory(directoryName);
#else
Directory.CreateDirectory(directoryName);
#endif
}
using (var binaryReader = new BinaryReader(dataProvider.FetchData(url)))
{
#if PORTABLE
using (var fileStream = PortableFile.Create(cachedFilePath))
#else
using (var fileStream = File.Create(cachedFilePath))
#endif
{
binaryReader.BaseStream.CopyTo(fileStream);
}
}
}
#if PORTABLE
cachedFilePathExists = PortableFile.Exists(cachedFilePath);
#else
cachedFilePathExists = File.Exists(cachedFilePath);
#endif
if (!cachedFilePathExists)
{
throw new FileNotInCacheException();
}
#if PORTABLE
return(PortableFile.Open(cachedFilePath, PortableFileMode.Open));
#else
return(new FileStream(cachedFilePath, FileMode.Open));
#endif
}
public CacheableDataProvider(string storagePath)
{
StoragePath = storagePath;
PortableDirectory.CreateDirectory(storagePath);
}