/// <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));
}
/// <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());
}
public void Write(TzdbDatabase database, WindowsZones cldrWindowsZones)
{
var timeZoneMap = new Dictionary <string, string>();
foreach (var zone in database.GenerateDateTimeZones())
{
timeZoneMap.Add(zone.Id, zone.Id);
WriteTimeZone(zone);
}
// Normalize the aliases
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);
}
resourceWriter.AddResource(TzdbResourceData.VersionKey, database.Version);
WriteDictionary(TzdbResourceData.IdMapKey, timeZoneMap);
WriteDictionary(TzdbResourceData.WindowsToPosixMapKey, cldrWindowsZones.PrimaryMapping);
resourceWriter.AddResource(TzdbResourceData.WindowsToPosixMapVersionKey, cldrWindowsZones.Version);
resourceWriter.Close();
}
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);
}
private TzdbResourceData(ResourceSet source)
{
this.source = source;
tzdbIdMap = CheckKey(LoadDictionary(source, IdMapKey), IdMapKey);
tzdbVersion = CheckKey(source.GetString(VersionKey), VersionKey);
var windowsMappingVersion = CheckKey(source.GetString(WindowsToPosixMapVersionKey), WindowsToPosixMapVersionKey);
var windowsMapping = CheckKey(LoadDictionary(source, WindowsToPosixMapKey), WindowsToPosixMapKey);
this.windowsMapping = WindowsZones.FromPrimaryMapping(windowsMappingVersion, windowsMapping);
}
public void Properties()
{
var zones = new WindowsZones("version", "tzdbVersion", "windowsVersion", new[] { MapZone1, MapZone2, MapZone3 });
Assert.AreEqual("version", zones.Version);
Assert.AreEqual("tzdbVersion", zones.TzdbVersion);
Assert.AreEqual("windowsVersion", zones.WindowsVersion);
Assert.AreEqual("primaryId2", zones.PrimaryMapping["windowsId2"]);
Assert.AreEqual("primaryId3", zones.PrimaryMapping["windowsId3"]);
Assert.AreEqual(new[] { MapZone1, MapZone2, MapZone3 }, zones.MapZones);
}
private static void ReadWindowsZones(DateTimeZoneReader reader)
{
var zones = WindowsZones.Read(reader);
Console.WriteLine($" Version: {zones.Version}");
Console.WriteLine($" TZDB version: {zones.TzdbVersion}");
Console.WriteLine($" Windows version: {zones.WindowsVersion}");
Console.WriteLine($" Mappings: {zones.MapZones.Count}");
foreach (var mapZone in zones.MapZones)
{
Console.WriteLine($" {mapZone}");
}
}
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);
}
private TzdbStreamData(Builder builder)
{
stringPool = CheckNotNull(builder.stringPool, "string pool");
tzdbIdMap = CheckNotNull(builder.tzdbIdMap, "TZDB alias map");
tzdbVersion = CheckNotNull(builder.tzdbVersion, "TZDB version");
windowsMapping = CheckNotNull(builder.windowsMapping, "CLDR Supplemental Windows Zones");
zoneFields = builder.zoneFields;
zoneLocations = builder.zoneLocations;
// Add in the canonical IDs as mappings to themselves.
foreach (var id in zoneFields.Keys)
{
tzdbIdMap[id] = id;
}
windowsAdditionalStandardNameToIdMapping = CheckNotNull(builder.windowsAdditionalStandardNameToIdMapping,
"Windows additional standard name to ID mapping");
}
public void ReadWrite()
{
var zones = new WindowsZones("version", "tzdbVersion", "windowsVersion", new[] { MapZone1, MapZone2, MapZone3 });
var stream = new MemoryStream();
var writer = new DateTimeZoneWriter(stream, null);
zones.Write(writer);
stream.Position = 0;
var reader = new DateTimeZoneReader(stream, null);
var zones2 = WindowsZones.Read(reader);
Assert.AreEqual("version", zones2.Version);
Assert.AreEqual("tzdbVersion", zones2.TzdbVersion);
Assert.AreEqual("windowsVersion", zones2.WindowsVersion);
Assert.AreEqual("primaryId2", zones2.PrimaryMapping["windowsId2"]);
Assert.AreEqual("primaryId3", zones2.PrimaryMapping["windowsId3"]);
Assert.AreEqual(new[] { MapZone1, MapZone2, MapZone3 }, zones2.MapZones);
}
internal void HandleSupplementalWindowsZonesField(TzdbStreamField field)
{
CheckSingleField(field, windowsMapping);
windowsMapping = field.ExtractSingleValue(WindowsZones.Read, stringPool);
}
public void Write(TzdbDatabase database, WindowsZones cldrWindowsZones)
{
FieldCollection fields = new FieldCollection();
var zones = database.GenerateDateTimeZones().ToList();
var stringPool = CreateOptimizedStringPool(zones, database.ZoneLocations, 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
(PclSupport.StandardNameToIdMap.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);
}
}
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);
stream.Close();
}
