public bool IsResource(IFileSystemResourceAccessor baseResourceAccessor, string path)
{
string resourceName = baseResourceAccessor.ResourceName;
if (string.IsNullOrEmpty(resourceName) || !baseResourceAccessor.IsFile)
{
return(false);
}
// Test if we have already an ISO proxy for that ISO file...
lock (_syncObj)
{
string key = baseResourceAccessor.CanonicalLocalResourcePath.Serialize();
try
{
IsoResourceProxy proxy;
if (_isoUsages.TryGetValue(key, out proxy))
{
lock (proxy.SyncObj)
return(IsoResourceAccessor.IsResource(proxy.DiskFileSystem, path));
}
}
catch (Exception)
{
return(false);
}
}
// ... if not, test the resource in a new disk file system instance
using (Stream underlayingStream = baseResourceAccessor.OpenRead())
{
try
{
IFileSystem diskFileSystem = IsoResourceProxy.GetFileSystem(underlayingStream);
using (diskFileSystem as IDisposable)
return(IsoResourceAccessor.IsResource(diskFileSystem, path));
}
catch
{
return(false);
}
}
}
