internal bool IsUpToDate(OutputWindowLogger logger, bool testing)
{
logger.WriteLine("Checking whether {0} needs to be rebuilt:", ProjectMgr.Caption);
// in batch build it is possible that config is out of sync.
// in this case, don't assume we are up to date
ConfigCanonicalName activeConfig = default(ConfigCanonicalName);
if(!Utilities.TryGetActiveConfigurationAndPlatform(ServiceProvider.GlobalProvider, this.project.ProjectIDGuid, out activeConfig) ||
activeConfig != this.ConfigCanonicalName)
{
logger.WriteLine("Not up to date: active confic does not match project config. Active: {0} Project: {1}", activeConfig, this.ConfigCanonicalName);
if (!testing)
return false;
}
var inputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
if (!GetUTDCheckInputs(inputs))
return false;
var outputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
List<Tuple<string, string>> preserveNewestOutputs;
GetUTDCheckOutputs(inputs, outputs, out preserveNewestOutputs);
// determine the oldest output timestamp
DateTime stalestOutputTime = DateTime.MaxValue.ToUniversalTime();
foreach (var output in outputs)
{
var timeStamp = TryGetLastWriteTimeUtc(output, logger);
if (!timeStamp.HasValue)
{
logger.WriteLine("Declaring project NOT up to date, can't find expected output {0}", output);
return false;
}
logger.WriteLine(" Output: {0} {1}", timeStamp.Value.ToLocalTime(), output);
if (stalestOutputTime > timeStamp.Value)
stalestOutputTime = timeStamp.Value;
}
// determine the newest input timestamp
DateTime freshestInputTime = DateTime.MinValue.ToUniversalTime();
foreach (var input in inputs)
{
var timeStamp = TryGetLastWriteTimeUtc(input, logger);
if (!timeStamp.HasValue)
{
logger.WriteLine("Declaring project NOT up to date, can't find expected input {0}", input);
return false;
}
logger.WriteLine(" Input: {0} {1}", timeStamp.Value.ToLocalTime(), input);
if (freshestInputTime < timeStamp.Value)
freshestInputTime = timeStamp.Value;
}
// check 1-1 Preserve Newest mappings
foreach (var kv in preserveNewestOutputs)
{
if (!IsUpToDatePreserveNewest(logger, TryGetLastWriteTimeUtc, kv.Item1, kv.Item2))
return false;
}
logger.WriteLine("Freshest input: {0}", freshestInputTime.ToLocalTime());
logger.WriteLine("Stalest output: {0}", stalestOutputTime.ToLocalTime());
logger.WriteLine("Up to date: {0}", freshestInputTime <= stalestOutputTime);
// if all outputs are younger than all inputs, we are up to date
return freshestInputTime <= stalestOutputTime;
}
public static bool IsUpToDatePreserveNewest(OutputWindowLogger logger, Func<string, OutputWindowLogger, DateTime?> tryGetLastWriteTimeUtc, string input, string output)
{
var inputTime = tryGetLastWriteTimeUtc(input, logger);
if (!inputTime.HasValue)
{
logger.WriteLine("Declaring project NOT up to date, can't find expected input {0}", input);
return false;
}
var outputTime = tryGetLastWriteTimeUtc(output, logger);
if (!outputTime.HasValue)
{
logger.WriteLine("Declaring project NOT up to date, can't find expected output {0}", output);
return false;
}
var inputTimeValue = inputTime.Value;
var outputTimeValue = outputTime.Value;
if (outputTimeValue < inputTimeValue)
{
logger.WriteLine("Declaring project NOT up to date, ouput {0} is stale", output);
return false;
}
return true;
}
private static DateTime? TryGetLastWriteTimeUtc(string path, OutputWindowLogger logger)
{
Exception exn = null;
try
{
if (File.Exists(path))
return File.GetLastWriteTimeUtc(path);
}
catch (Exception ex)
{
exn = ex;
}
if (exn != null)
{
logger.WriteLine("Failed to access {0}: {1}", path, exn.Message);
logger.WriteLine(exn.ToString());
}
return null;
}