private static void LogWindowsZonesSummary(WindowsZones windowsZones)
{
Console.WriteLine("Windows Zones:");
Console.WriteLine(" Version: {0}", windowsZones.Version);
Console.WriteLine(" TZDB version: {0}", windowsZones.TzdbVersion);
Console.WriteLine(" Windows version: {0}", windowsZones.WindowsVersion);
Console.WriteLine(" {0} MapZones", windowsZones.MapZones.Count);
Console.WriteLine(" {0} primary mappings", windowsZones.PrimaryMapping.Count);
}
public void MergeWindowsZones()
{
var originalZones = new WindowsZones("orig-version", "orig-tzdb-version", "orig-win-version",
new[]
{
new MapZone("ID1", "001", new[] { "A" }),
new MapZone("ID1", "T1-1", new[] { "B", "C" }),
new MapZone("ID1", "T1-2", new[] { "D" }),
new MapZone("ID2", "001", new[] { "E" }),
new MapZone("ID2", "T2-1", new[] { "F" })
});
var overrideZones = new WindowsZones("override-version", "", "",
new[]
{
// Replace ID1 / 001
new MapZone("ID1", "001", new[] { "A1" }),
// Delete ID1 / T1-1
new MapZone("ID1", "T1-1", new string[0]),
// (Leave ID1 / T1-2)
// Add ID1 / T1-3
new MapZone("ID1", "T1-3", new[] { "B1", "C1", "G1" }),
// (Leave ID2 / 001)
// Replace ID2 / T2-1
new MapZone("ID2", "T2-1", new[] { "H1" }),
// Add ID3 / 001
new MapZone("ID3", "001", new[] { "I1" })
});
var actual = Program.MergeWindowsZones(originalZones, overrideZones);
var expected = new WindowsZones("override-version", "orig-tzdb-version", "orig-win-version",
new[]
{
new MapZone("ID1", "001", new[] { "A1" }),
new MapZone("ID1", "T1-2", new[] { "D" }),
new MapZone("ID1", "T1-3", new[] { "B1", "C1", "G1" }),
new MapZone("ID2", "001", new[] { "E" }),
new MapZone("ID2", "T2-1", new[] { "H1" }),
new MapZone("ID3", "001", new[] { "I1" })
});
// Could implement IEquatable<WindowsZones>, but it doesn't seem worth it right now.
Assert.AreEqual(expected.Version, actual.Version);
Assert.AreEqual(expected.TzdbVersion, actual.TzdbVersion);
Assert.AreEqual(expected.WindowsVersion, actual.WindowsVersion);
Assert.AreEqual(expected.MapZones, actual.MapZones);
}
public void Write(
TzdbDatabase database,
WindowsZones cldrWindowsZones,
IDictionary<string, string> additionalWindowsNameToIdMappings,
Stream stream)
{
FieldCollection fields = new FieldCollection();
var zones = database.GenerateDateTimeZones().ToList();
var stringPool = CreateOptimizedStringPool(zones, database.ZoneLocations, database.Zone1970Locations, cldrWindowsZones);
// First assemble the fields (writing to the string pool as we go)
foreach (var zone in zones)
{
var zoneField = fields.AddField(TzdbStreamFieldId.TimeZone, stringPool);
WriteZone(zone, zoneField.Writer);
}
fields.AddField(TzdbStreamFieldId.TzdbVersion, null).Writer.WriteString(database.Version);
// Normalize the aliases
var timeZoneMap = new Dictionary<string, string>();
foreach (var key in database.Aliases.Keys)
{
var value = database.Aliases[key];
while (database.Aliases.ContainsKey(value))
{
value = database.Aliases[value];
}
timeZoneMap.Add(key, value);
}
fields.AddField(TzdbStreamFieldId.TzdbIdMap, stringPool).Writer.WriteDictionary(timeZoneMap);
// Windows mappings
cldrWindowsZones.Write(fields.AddField(TzdbStreamFieldId.CldrSupplementalWindowsZones, stringPool).Writer);
fields.AddField(TzdbStreamFieldId.WindowsAdditionalStandardNameToIdMapping, stringPool).Writer.WriteDictionary
(additionalWindowsNameToIdMappings.ToDictionary(pair => pair.Key, pair => cldrWindowsZones.PrimaryMapping[pair.Value]));
// Zone locations, if any.
var zoneLocations = database.ZoneLocations;
if (zoneLocations != null)
{
var field = fields.AddField(TzdbStreamFieldId.ZoneLocations, stringPool);
field.Writer.WriteCount(zoneLocations.Count);
foreach (var zoneLocation in zoneLocations)
{
zoneLocation.Write(field.Writer);
}
}
// Zone 1970 locations, if any.
var zone1970Locations = database.Zone1970Locations;
if (zone1970Locations != null)
{
var field = fields.AddField(TzdbStreamFieldId.Zone1970Locations, stringPool);
field.Writer.WriteCount(zone1970Locations.Count);
foreach (var zoneLocation in zone1970Locations)
{
zoneLocation.Write(field.Writer);
}
}
var stringPoolField = fields.AddField(TzdbStreamFieldId.StringPool, null);
stringPoolField.Writer.WriteCount(stringPool.Count);
foreach (string value in stringPool)
{
stringPoolField.Writer.WriteString(value);
}
// Now write all the fields out, in the right order.
new BinaryWriter(stream).Write(Version);
fields.WriteTo(stream);
}
/// <summary>
/// Creates a string pool which contains the most commonly-used strings within the given set
/// of zones first. This will allow them to be more efficiently represented when we write them out for real.
/// </summary>
private static List<string> CreateOptimizedStringPool(
IEnumerable<DateTimeZone> zones,
IEnumerable<TzdbZoneLocation> zoneLocations,
IEnumerable<TzdbZone1970Location> zone1970Locations,
WindowsZones cldrWindowsZones)
{
var optimizingWriter = new StringPoolOptimizingFakeWriter();
foreach (var zone in zones)
{
optimizingWriter.WriteString(zone.Id);
WriteZone(zone, optimizingWriter);
}
if (zoneLocations != null)
{
foreach (var location in zoneLocations)
{
location.Write(optimizingWriter);
}
}
if (zone1970Locations != null)
{
foreach (var location in zone1970Locations)
{
location.Write(optimizingWriter);
}
}
cldrWindowsZones.Write(optimizingWriter);
return optimizingWriter.CreatePool();
}
/// <summary>
/// Merge two WindowsZones objects together. The result has versions present in override,
/// but falling back to the original for versions absent in the override. The set of MapZones
/// in the result is the union of those in the original and override, but any ID/Territory
/// pair present in both results in the override taking priority, unless the override has an
/// empty "type" entry, in which case the entry is removed entirely.
///
/// While this method could reasonably be in WindowsZones class, it's only needed in
/// TzdbCompiler - and here is as good a place as any.
///
/// The resulting MapZones will be ordered by Windows ID followed by territory.
/// </summary>
/// <param name="windowsZones">The original WindowsZones</param>
/// <param name="overrideFile">The WindowsZones to override entries in the original</param>
/// <returns>A merged zones object.</returns>
internal static WindowsZones MergeWindowsZones(WindowsZones originalZones, WindowsZones overrideZones)
{
var version = overrideZones.Version == "" ? originalZones.Version : overrideZones.Version;
var tzdbVersion = overrideZones.TzdbVersion == "" ? originalZones.TzdbVersion : overrideZones.TzdbVersion;
var windowsVersion = overrideZones.WindowsVersion == "" ? originalZones.WindowsVersion : overrideZones.WindowsVersion;
// Work everything out using dictionaries, and then sort.
var mapZones = originalZones.MapZones.ToDictionary(mz => new { mz.WindowsId, mz.Territory });
foreach (var overrideMapZone in overrideZones.MapZones)
{
var key = new { overrideMapZone.WindowsId, overrideMapZone.Territory };
if (overrideMapZone.TzdbIds.Count == 0)
{
mapZones.Remove(key);
}
else
{
mapZones[key] = overrideMapZone;
}
}
var mapZoneList = mapZones
.OrderBy(pair => pair.Key.WindowsId)
.ThenBy(pair => pair.Key.Territory)
.Select(pair => pair.Value)
.ToList();
return new WindowsZones(version, tzdbVersion, windowsVersion, mapZoneList);
}
