public int Execute(WindowsMapperCompilerOptions options)
{
log.Info("Starting compilation of {0}", options.SourceFileName);
DateTimeZone.SetUtcOnly(true);
var inputFile = new FileInfo(options.SourceFileName);
if (!inputFile.Exists)
{
log.Error("Source file {0} does not exist", inputFile.FullName);
return 2;
}
var mappings = ReadInput(inputFile);
using (var output = new ResourceOutput(WindowsToPosixResource.WindowToPosixMapBase, options.OutputType))
{
log.Info("Compiling to {0}", output.OutputFileName);
output.WriteDictionary(WindowsToPosixResource.WindowToPosixMapKey, mappings);
}
log.Info("Finished compiling.", options.SourceFileName);
return 0;
}
/// <summary>
/// Generates the date time zones from the given parsed time zone information object.
/// </summary>
/// <remarks>
/// <para>
/// First we go through the list of time zones and generate an <see cref="DateTimeZone" />
/// object for each one. We create a mapping between the time zone name and itself (for
/// writing out later). Then we write out the time zone as a resource to the current writer.
/// </para>
/// <para>
/// Second we go through all of the alias mappings and find the actual time zone that they
/// map to. we do this by redirecting through aliases until there are no more aliases. This
/// allows for on alias to refer to another. We add the alias mapping to the time zone
/// mapping created in the first step. When done, we write out the entire mapping as a
/// resource. The keys of the mapping can be used as the list of valid time zone ids
/// supported by this resource file.
/// </para>
/// </remarks>
/// <param name="database">The database of parsed zone info records.</param>
/// <param name="output">The output file <see cref="ResourceOutput" />.</param>
private static void GenerateDateTimeZones(TzdbDatabase database, ResourceOutput output)
{
var timeZoneMap = new Dictionary<string, string>();
foreach (var zoneList in database.Zones)
{
var timeZone = CreateTimeZone(zoneList, database.Rules);
timeZoneMap.Add(timeZone.Id, timeZone.Id);
output.WriteTimeZone(timeZone.Id, timeZone);
}
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);
}
output.WriteDictionary(DateTimeZoneResourceProvider.IdMapKey, timeZoneMap);
}
