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Diffstat (limited to 'core/src/main/j2me/org/spongycastle/asn1/DateFormatter.java')
| -rw-r--r-- | core/src/main/j2me/org/spongycastle/asn1/DateFormatter.java | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/core/src/main/j2me/org/spongycastle/asn1/DateFormatter.java b/core/src/main/j2me/org/spongycastle/asn1/DateFormatter.java new file mode 100644 index 00000000..7201a2a4 --- /dev/null +++ b/core/src/main/j2me/org/spongycastle/asn1/DateFormatter.java @@ -0,0 +1,272 @@ +package org.spongycastle.asn1; + +import java.util.Calendar; +import java.util.Date; +import java.util.TimeZone; + +class DateFormatter +{ + // YYMMDDHHMMSSZ + static String toUTCDateString(Date date) + { + Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT")); + + calendar.setTime(date); + + return format2Year(calendar.get(Calendar.YEAR)) + format2(calendar.get(Calendar.MONTH) + 1) + format2(calendar.get(Calendar.DAY_OF_MONTH)) + + format2(calendar.get(Calendar.HOUR_OF_DAY)) + format2(calendar.get(Calendar.MINUTE)) + format2(calendar.get(Calendar.SECOND)) + "Z"; + } + + static Date adjustedFromUTCDateString(byte[] date) + { + Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT")); + + int year = toInt2(date, 0); + + if (year < 50) + { + year += 2000; + } + else + { + year += 1900; + } + + calendar.setTimeZone(TimeZone.getTimeZone("GMT")); + + calendar.set(Calendar.YEAR, year); + calendar.set(Calendar.MONTH, toInt2(date, 2) - 1); + calendar.set(Calendar.DAY_OF_MONTH, toInt2(date, 4)); + calendar.set(Calendar.HOUR_OF_DAY, toInt2(date, 6)); + calendar.set(Calendar.MINUTE, toInt2(date, 8)); + + int tzChar = 10; + + if (isNumber(date, tzChar)) + { + calendar.set(Calendar.SECOND, toInt2(date, 10)); + tzChar = 12; + } + else + { + calendar.set(Calendar.SECOND, 0); + } + + calendar.set(Calendar.MILLISECOND, 0); + + if (date[tzChar] != 'Z') + { + int hoursOff = 0; + int minutesOff = 0; + + hoursOff = toInt2(date, tzChar + 1) * 60 * 60 * 1000; + + if (date.length > tzChar + 3) + { + minutesOff = toInt2(date, tzChar + 3) * 60 * 1000; + } + + if (date[tzChar] == '-') + { + return new Date(calendar.getTime().getTime() + hoursOff + minutesOff); + } + else + { + return new Date(calendar.getTime().getTime() - (hoursOff + minutesOff)); + } + } + + return calendar.getTime(); + } + + static String getGeneralizedTimeDateString(Date date, boolean includeMillis) + { + Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT")); + + calendar.setTime(date); + + String time = format4Year(calendar.get(Calendar.YEAR)) + format2(calendar.get(Calendar.MONTH) + 1) + format2(calendar.get(Calendar.DAY_OF_MONTH)) + + format2(calendar.get(Calendar.HOUR_OF_DAY)) + format2(calendar.get(Calendar.MINUTE)) + format2(calendar.get(Calendar.SECOND)); + + if (includeMillis) + { + time += "." + format3(calendar.get(Calendar.MILLISECOND)); + } + + return time + "Z"; + } + + static Date fromGeneralizedTimeString(byte[] date) + { + Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT")); + + int year = toInt4(date, 0); + + if (isLocalTime(date)) + { + calendar.setTimeZone(TimeZone.getTimeZone("GMT")); + } + + calendar.set(Calendar.YEAR, year); + calendar.set(Calendar.MONTH, toInt2(date, 4) - 1); + calendar.set(Calendar.DAY_OF_MONTH, toInt2(date, 6)); + calendar.set(Calendar.HOUR_OF_DAY, toInt2(date, 8)); + calendar.set(Calendar.MINUTE, toInt2(date, 10)); + + int tzChar = 12; + + if (isNumber(date, tzChar)) + { + calendar.set(Calendar.SECOND, toInt2(date, 12)); + tzChar = 14; + } + else + { + calendar.set(Calendar.SECOND, 0); + } + + if (tzChar != date.length && date[tzChar] == '.') + { + int millis = 0; + tzChar++; + if (isNumber(date, tzChar)) + { + millis = (date[tzChar] - '0') * 100; + tzChar++; + } + if (tzChar != date.length && isNumber(date, tzChar)) + { + millis += (date[tzChar] - '0') * 10; + tzChar++; + } + if (tzChar != date.length && isNumber(date, tzChar)) + { + millis += (date[tzChar] - '0'); + tzChar++; + } + calendar.set(Calendar.MILLISECOND, millis); + } + else + { + calendar.set(Calendar.MILLISECOND, 0); + } + + // skip nano-seconds + while (tzChar != date.length && isNumber(date, tzChar)) + { + tzChar++; + } + + if (tzChar != date.length && date[tzChar] != 'Z') + { + int hoursOff = 0; + int minutesOff = 0; + + hoursOff = toInt2(date, tzChar + 1) * 60 * 60 * 1000; + + if (date.length > tzChar + 3) + { + minutesOff = toInt2(date, tzChar + 3) * 60 * 1000; + } + + if (date[tzChar] == '-') + { + return new Date(calendar.getTime().getTime() + hoursOff + minutesOff); + } + else + { + return new Date(calendar.getTime().getTime() - (hoursOff + minutesOff)); + } + } + + return calendar.getTime(); + } + + private static String format2(int v) + { + if (v < 10) + { + return "0" + v; + } + + return Integer.toString(v); + } + + private static String format2Year(int v) + { + if (v > 2000) + { + v = v - 2000; + } + else + { + v = v - 1900; + } + + return format2(v); + } + + private static String format3(int v) + { + if (v < 10) + { + return "00" + v; + } + + if (v < 100) + { + return "0" + v; + } + + return Integer.toString(v); + } + + private static String format4Year(int v) + { + if (v < 10) + { + return "000" + v; + } + + if (v < 100) + { + return "00" + v; + } + + if (v < 1000) + { + return "0" + v; + } + + return Integer.toString(v); + } + + private static boolean isNumber(byte[] input, int off) + { + byte b = input[off]; + return (b >= '0') && (b <= '9'); + } + + private static boolean isLocalTime(byte[] date) + { + for (int i = date.length - 1; i > date.length - 6; i--) + { + if (date[i] == 'Z' || date[i] == '-' || date[i] == '+') + { + return false; + } + } + + return true; + } + + private static int toInt2(byte[] input, int off) + { + return (input[off] - '0') * 10 + (input[off + 1] - '0'); + } + + private static int toInt4(byte[] input, int off) + { + return toInt2(input, off) * 100 + toInt2(input, off + 2) ; + } +} |