/// <summary>
/// Reads the specified file from disk into a StateFileBase derived object.
/// </summary>
/// <param name="stateFile"></param>
/// <returns></returns>
static internal StateFileBase DeserializeCache(string stateFile, TaskLoggingHelper log, Type requiredReturnType)
{
StateFileBase retVal = null;
// First, we read the cache from disk if one exists, or if one does not exist
// then we create one.
try
{
if (stateFile != null && stateFile.Length > 0 && File.Exists(stateFile))
{
using (FileStream s = new FileStream(stateFile, FileMode.Open))
{
BinaryFormatter formatter = new BinaryFormatter();
retVal = (StateFileBase)formatter.Deserialize(s);
if ((retVal != null) && (!requiredReturnType.IsInstanceOfType(retVal)))
{
log.LogWarning("Could not write state file {0} (Incompatible state file type)", stateFile);
retVal = null;
}
}
}
}
catch (Exception e)
{
// The deserialization process seems like it can throw just about
// any exception imaginable. Catch them all here.
// Not being able to deserialize the cache is not an error, but we let the user know anyway.
// Don't want to hold up processing just because we couldn't read the file.
log.LogWarning("Could not read state file {0} ({1})", stateFile, e.Message);
}
return(retVal);
}
/// <summary>
/// Reads the .cache file from disk into a ResGenDependencies object.
/// </summary>
/// <param name="stateFile"></param>
/// <param name="useSourcePath"></param>
/// <returns></returns>
internal static ResGenDependencies DeserializeCache(string stateFile, bool useSourcePath, TaskLoggingHelper log)
{
ResGenDependencies retVal = (ResGenDependencies)StateFileBase.DeserializeCache(stateFile, log, typeof(ResGenDependencies));
if (retVal == null)
{
retVal = new ResGenDependencies();
}
// Ensure that the cache is properly initialized with respect to how resgen will
// resolve linked files within .resx files. ResGen has two different
// ways for resolving relative file-paths in linked files. The way
// that ResGen resolved relative paths before Whidbey was always to
// resolve from the current working directory. In Whidbey a new command-line
// switch "/useSourcePath" instructs ResGen to use the folder that
// contains the .resx file as the path from which it should resolve
// relative paths. So we should base our timestamp/existence checking
// on the same switch & resolve in the same manner as ResGen.
retVal.UseSourcePath = useSourcePath;
return(retVal);
}
