static LoadedAssembly TryReadFromCache(string cacheFileName, DateTime lastWriteTime)
{
if (cacheFileName == null || !File.Exists(cacheFileName))
return null;
//LoggingService.Debug("Deserializing " + cacheFileName);
try {
using (FileStream fs = new FileStream(cacheFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, FileOptions.SequentialScan)) {
using (BinaryReader reader = new BinaryReaderWith7BitEncodedInts(fs)) {
if (reader.ReadInt64() != lastWriteTime.Ticks) {
LoggingService.Debug("Timestamp mismatch, deserialization aborted. (" + cacheFileName + ")");
return null;
}
FastSerializer s = new FastSerializer();
return s.Deserialize(reader) as LoadedAssembly;
}
}
} catch (IOException ex) {
LoggingService.Warn(ex);
return null;
} catch (UnauthorizedAccessException ex) {
LoggingService.Warn(ex);
return null;
} catch (SerializationException ex) {
LoggingService.Warn(ex);
return null;
}
}
static IProjectContent TryReadFromCache(string cacheFileName)
{
if (cacheFileName == null || !File.Exists(cacheFileName))
return null;
LoggingService.Debug("Deserializing " + cacheFileName);
try {
using (FileStream fs = new FileStream(cacheFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete, 4096, FileOptions.SequentialScan)) {
using (BinaryReader reader = new BinaryReaderWith7BitEncodedInts(fs)) {
if (reader.ReadInt32() != cacheMagicNumber) {
LoggingService.Warn("Incorrect magic number");
return null;
}
FastSerializer s = new FastSerializer();
return (IProjectContent)s.Deserialize(reader);
}
}
} catch (IOException ex) {
LoggingService.Warn(ex);
return null;
} catch (UnauthorizedAccessException ex) {
LoggingService.Warn(ex);
return null;
} catch (SerializationException ex) {
LoggingService.Warn(ex);
return null;
} catch (InvalidCastException ex) {
// can happen if serialized types are incompatible to expected types
LoggingService.Warn(ex);
return null;
} catch (FormatException ex) {
// e.g. invalid 7-bit-encoded int
LoggingService.Warn(ex);
return null;
}
}
