private static void TZif_ParseRaw(Byte[] data, out TZifHead t, out DateTime[] dts, out Byte[] typeOfLocalTime, out TZifType[] transitionType,
out String zoneAbbreviations, out Boolean[] StandardTime, out Boolean[] GmtTime)
{
// initialize the out parameters in case the TZifHead ctor throws
dts = null;
typeOfLocalTime = null;
transitionType = null;
zoneAbbreviations = String.Empty;
StandardTime = null;
GmtTime = null;
// read in the 44-byte TZ header containing the count/length fields
//
t = new TZifHead(data, 0);
int index = TZifHead.Length;
// initialize the containers for the rest of the TZ data
dts = new DateTime[t.TimeCount];
typeOfLocalTime = new Byte[t.TimeCount];
transitionType = new TZifType[t.TypeCount];
zoneAbbreviations = String.Empty;
StandardTime = new Boolean[t.TypeCount];
GmtTime = new Boolean[t.TypeCount];
// read in the 4-byte UTC transition points and convert them to Windows
//
for (int i = 0; i < t.TimeCount; i++)
{
int unixTime = TZif_ToInt32(data, index);
dts[i] = TZif_UnixTimeToWindowsTime(unixTime);
index += 4;
}
// read in the Type Indices; there is a 1:1 mapping of UTC transition points to Type Indices
// these indices directly map to the array index in the transitionType array below
//
for (int i = 0; i < t.TimeCount; i++)
{
typeOfLocalTime[i] = data[index];
index += 1;
}
// read in the Type table. Each 6-byte entry represents
// {UtcOffset, IsDst, AbbreviationIndex}
//
// each AbbreviationIndex is a character index into the zoneAbbreviations string below
//
for (int i = 0; i < t.TypeCount; i++)
{
transitionType[i] = new TZifType(data, index);
index += 6;
}
// read in the Abbreviation ASCII string. This string will be in the form:
// "PST\0PDT\0PWT\0\PPT"
//
System.Text.Encoding enc = new System.Text.UTF8Encoding();
zoneAbbreviations = enc.GetString(data, index, (int)t.CharCount);
index += (int)t.CharCount;
// skip ahead of the Leap-Seconds Adjustment data. In a future release, consider adding
// support for Leap-Seconds
//
index += (int)(t.LeapCount * 8); // skip the leap second transition times
// read in the Standard Time table. There should be a 1:1 mapping between Type-Index and Standard
// Time table entries.
//
// TRUE = transition time is standard time
// FALSE = transition time is wall clock time
// ABSENT = transition time is wall clock time
//
for (int i = 0; i < t.IsStdCount && i < t.TypeCount && index < data.Length; i++)
{
StandardTime[i] = (data[index++] != 0);
}
// read in the GMT Time table. There should be a 1:1 mapping between Type-Index and GMT Time table
// entries.
//
// TRUE = transition time is UTC
// FALSE = transition time is local time
// ABSENT = transition time is local time
//
for (int i = 0; i < t.IsGmtCount && i < t.TypeCount && index < data.Length; i++)
{
GmtTime[i] = (data[index++] != 0);
}
}
private static void TZif_ParseRaw(Byte[] data, out TZifHead t, out DateTime[] dts, out Byte[] typeOfLocalTime, out TZifType[] transitionType,
out String zoneAbbreviations, out Boolean[] StandardTime, out Boolean[] GmtTime)
{
// initialize the out parameters in case the TZifHead ctor throws
dts = null;
typeOfLocalTime = null;
transitionType = null;
zoneAbbreviations = String.Empty;
StandardTime = null;
GmtTime = null;
// read in the 44-byte TZ header containing the count/length fields
//
t = new TZifHead(data, 0);
int index = TZifHead.Length;
// initialize the containers for the rest of the TZ data
dts = new DateTime[t.TimeCount];
typeOfLocalTime = new Byte[t.TimeCount];
transitionType = new TZifType[t.TypeCount];
zoneAbbreviations = String.Empty;
StandardTime = new Boolean[t.TypeCount];
GmtTime = new Boolean[t.TypeCount];
// read in the 4-byte UTC transition points and convert them to Windows
//
for (int i = 0; i < t.TimeCount; i++)
{
int unixTime = TZif_ToInt32(data, index);
dts[i] = TZif_UnixTimeToWindowsTime(unixTime);
index += 4;
}
// read in the Type Indices; there is a 1:1 mapping of UTC transition points to Type Indices
// these indices directly map to the array index in the transitionType array below
//
for (int i = 0; i < t.TimeCount; i++)
{
typeOfLocalTime[i] = data[index];
index += 1;
}
// read in the Type table. Each 6-byte entry represents
// {UtcOffset, IsDst, AbbreviationIndex}
//
// each AbbreviationIndex is a character index into the zoneAbbreviations string below
//
for (int i = 0; i < t.TypeCount; i++)
{
transitionType[i] = new TZifType(data, index);
index += 6;
}
// read in the Abbreviation ASCII string. This string will be in the form:
// "PST\0PDT\0PWT\0\PPT"
//
System.Text.Encoding enc = new System.Text.UTF8Encoding();
zoneAbbreviations = enc.GetString(data, index, (int)t.CharCount);
index += (int)t.CharCount;
// skip ahead of the Leap-Seconds Adjustment data. In a future release, consider adding
// support for Leap-Seconds
//
index += (int)(t.LeapCount * 8); // skip the leap second transition times
// read in the Standard Time table. There should be a 1:1 mapping between Type-Index and Standard
// Time table entries.
//
// TRUE = transition time is standard time
// FALSE = transition time is wall clock time
// ABSENT = transition time is wall clock time
//
for (int i = 0; i < t.IsStdCount && i < t.TypeCount && index < data.Length; i++)
{
StandardTime[i] = (data[index++] != 0);
}
// read in the GMT Time table. There should be a 1:1 mapping between Type-Index and GMT Time table
// entries.
//
// TRUE = transition time is UTC
// FALSE = transition time is local time
// ABSENT = transition time is local time
//
for (int i = 0; i < t.IsGmtCount && i < t.TypeCount && index < data.Length; i++)
{
GmtTime[i] = (data[index++] != 0);
}
}
private static void TZif_ParseRaw(byte[] data, out TZifHead t, out DateTime[] dts, out byte[] typeOfLocalTime, out TZifType[] transitionType,
out string zoneAbbreviations, out bool[] StandardTime, out bool[] GmtTime, out string?futureTransitionsPosixFormat)
{
throw new NotImplementedException();
}
