protected UUID timeUUID(Temporal time, long clockSequence, byte[] node, int offset) {
// TODO add checks
- Duration duration = Duration.between(TimeUuidState.GREGORIAN_START, time);
+ Duration duration = Duration.between(TimeUuid.TIMESTAMP_ZERO, time);
// Number of 100 ns intervals in one second: 1000000000 / 100 = 10000000
long timestamp = duration.getSeconds() * 10000000 + duration.getNano() / 100;
return newTimeUUID(timestamp, clockSequence, node, offset);
Objects.requireNonNull(namespace, "Namespace cannot be null");
Objects.requireNonNull(name, "Name cannot be null");
- byte[] bytes = sha1(toBytes(namespace), name);
+ byte[] bytes = sha1(UuidBinaryUtils.toBytes(namespace), name);
bytes[6] &= 0x0f;
bytes[6] |= 0x50;// v5
bytes[8] &= 0x3f;
bytes[8] |= 0x80;// variant 1
- UUID result = fromBytes(bytes, 0);
+ UUID result = UuidBinaryUtils.fromBytes(bytes, 0);
return result;
}
Objects.requireNonNull(name, "Name cannot be null");
byte[] arr = new byte[name.length + 16];
- copyBytes(namespace, arr, 0);
+ UuidBinaryUtils.copyBytes(namespace, arr, 0);
System.arraycopy(name, 0, arr, 16, name.length);
return UUID.nameUUIDFromBytes(arr);
}
arr[6] |= 0x40;// v4
arr[8] &= 0x3f;
arr[8] |= 0x80;// variant 1
- return fromBytes(arr);
+ return UuidBinaryUtils.fromBytes(arr);
+ }
+
+ /*
+ * SPI UTILITIES
+ */
+ /** Guarantees that a byte array of length 6 will be returned. */
+ protected static byte[] toNodeIdBytes(byte[] source, int offset) {
+ if (source == null)
+ return null;
+ if (offset < 0 || offset + 6 > source.length)
+ throw new ArrayIndexOutOfBoundsException(offset);
+ byte[] nodeId = new byte[6];
+ System.arraycopy(source, offset, nodeId, 0, 6);
+ return nodeId;
+ }
+
+ /**
+ * Force this node id to be identified as no MAC address.
+ *
+ * @see https://datatracker.ietf.org/doc/html/rfc4122#section-4.5
+ */
+ protected static void forceToNoMacAddress(byte[] nodeId, int offset) {
+ assert nodeId != null && offset < nodeId.length;
+ nodeId[offset] = (byte) (nodeId[offset] | 1);
}
/*
private final static String MD5 = "MD5";
private final static String SHA1 = "SHA1";
- protected byte[] sha1(byte[]... bytes) {
+ protected static byte[] sha1(byte[]... bytes) {
MessageDigest digest = getSha1Digest();
for (byte[] arr : bytes)
digest.update(arr);
return checksum;
}
- protected byte[] md5(byte[]... bytes) {
+ protected static byte[] md5(byte[]... bytes) {
MessageDigest digest = getMd5Digest();
for (byte[] arr : bytes)
digest.update(arr);
return checksum;
}
- protected MessageDigest getSha1Digest() {
+ protected static MessageDigest getSha1Digest() {
return getDigest(SHA1);
}
- protected MessageDigest getMd5Digest() {
+ protected static MessageDigest getMd5Digest() {
return getDigest(MD5);
}
- private MessageDigest getDigest(String name) {
+ private static MessageDigest getDigest(String name) {
try {
return MessageDigest.getInstance(name);
} catch (NoSuchAlgorithmException e) {
}
}
- /*
- * UTILITIES
- */
- /**
- * Convert bytes to an UUID. Byte array must not be null and be exactly of
- * length 16.
- */
- protected UUID fromBytes(byte[] data) {
- Objects.requireNonNull(data, "Byte array must not be null");
- if (data.length != 16)
- throw new IllegalArgumentException("Byte array as length " + data.length);
- return fromBytes(data, 0);
- }
-
- /**
- * Convert bytes to an UUID, starting to read the array at this offset.
- */
- protected UUID fromBytes(byte[] data, int offset) {
- Objects.requireNonNull(data, "Byte array cannot be null");
- long msb = 0;
- long lsb = 0;
- for (int i = offset; i < 8 + offset; i++)
- msb = (msb << 8) | (data[i] & 0xff);
- for (int i = 8 + offset; i < 16 + offset; i++)
- lsb = (lsb << 8) | (data[i] & 0xff);
- return new UUID(msb, lsb);
- }
-
- protected long longFromBytes(byte[] data) {
- long msb = 0;
- for (int i = 0; i < data.length; i++)
- msb = (msb << 8) | (data[i] & 0xff);
- return msb;
- }
-
- protected byte[] toBytes(UUID uuid) {
- Objects.requireNonNull(uuid, "UUID cannot be null");
- long msb = uuid.getMostSignificantBits();
- long lsb = uuid.getLeastSignificantBits();
- return toBytes(msb, lsb);
- }
-
- protected void copyBytes(UUID uuid, byte[] arr, int offset) {
- Objects.requireNonNull(uuid, "UUID cannot be null");
- long msb = uuid.getMostSignificantBits();
- long lsb = uuid.getLeastSignificantBits();
- copyBytes(msb, lsb, arr, offset);
- }
-
- /**
- * Converts an UUID hex representation without '-' to the standard form (with
- * '-').
- */
- public String compactToStd(String compact) {
- if (compact.length() != 32)
- throw new IllegalArgumentException(
- "Compact UUID '" + compact + "' has length " + compact.length() + " and not 32.");
- StringBuilder sb = new StringBuilder(36);
- for (int i = 0; i < 32; i++) {
- if (i == 8 || i == 12 || i == 16 || i == 20)
- sb.append('-');
- sb.append(compact.charAt(i));
- }
- String std = sb.toString();
- assert std.length() == 36;
- assert UUID.fromString(std).toString().equals(std);
- return std;
- }
-
- /**
- * Converts an UUID hex representation without '-' to an {@link UUID}.
- */
- public UUID fromCompact(String compact) {
- return UUID.fromString(compactToStd(compact));
- }
-
- /** To a 32 characters hex string without '-'. */
- public String toCompact(UUID uuid) {
- return toHexString(toBytes(uuid));
- }
-
- final protected static char[] hexArray = "0123456789abcdef".toCharArray();
-
- /** Convert two longs to a byte array with length 16. */
- protected byte[] toBytes(long long1, long long2) {
- byte[] result = new byte[16];
- for (int i = 0; i < 8; i++)
- result[i] = (byte) ((long1 >> ((7 - i) * 8)) & 0xff);
- for (int i = 8; i < 16; i++)
- result[i] = (byte) ((long2 >> ((15 - i) * 8)) & 0xff);
- return result;
- }
-
- protected void copyBytes(long long1, long long2, byte[] arr, int offset) {
- assert arr.length >= 16 + offset;
- for (int i = offset; i < 8 + offset; i++)
- arr[i] = (byte) ((long1 >> ((7 - i) * 8)) & 0xff);
- for (int i = 8 + offset; i < 16 + offset; i++)
- arr[i] = (byte) ((long2 >> ((15 - i) * 8)) & 0xff);
- }
-
- /** Converts a byte array to an hex String. */
- protected String toHexString(byte[] bytes) {
- char[] hexChars = new char[bytes.length * 2];
- for (int j = 0; j < bytes.length; j++) {
- int v = bytes[j] & 0xFF;
- hexChars[j * 2] = hexArray[v >>> 4];
- hexChars[j * 2 + 1] = hexArray[v & 0x0F];
- }
- return new String(hexChars);
- }
-
- protected byte[] toNodeIdBytes(byte[] source, int offset) {
- if (source == null)
- return null;
- if (offset < 0 || offset + 6 > source.length)
- throw new ArrayIndexOutOfBoundsException(offset);
- byte[] nodeId = new byte[6];
- System.arraycopy(source, offset, nodeId, 0, 6);
- return nodeId;
- }
-
- /*
- * STATIC UTILITIES
- */
- /**
- * Converts an UUID to a binary string (list of 0 and 1), with a separator to
- * make it more readable.
- */
- public static String toBinaryString(UUID uuid, int charsPerSegment, char separator) {
- Objects.requireNonNull(uuid, "UUID cannot be null");
- String binaryString = toBinaryString(uuid);
- StringBuilder sb = new StringBuilder(128 + (128 / charsPerSegment));
- for (int i = 0; i < binaryString.length(); i++) {
- if (i != 0 && i % charsPerSegment == 0)
- sb.append(separator);
- sb.append(binaryString.charAt(i));
- }
- return sb.toString();
- }
-
- /** Converts an UUID to a binary string (list of 0 and 1). */
- public static String toBinaryString(UUID uuid) {
- Objects.requireNonNull(uuid, "UUID cannot be null");
- String most = zeroTo64Chars(Long.toBinaryString(uuid.getMostSignificantBits()));
- String least = zeroTo64Chars(Long.toBinaryString(uuid.getLeastSignificantBits()));
- String binaryString = most + least;
- assert binaryString.length() == 128;
- return binaryString;
- }
-
- /**
- * Force this node id to be identified as no MAC address.
- *
- * @see https://datatracker.ietf.org/doc/html/rfc4122#section-4.5
- */
- public static void forceToNoMacAddress(byte[] nodeId, int offset) {
- assert nodeId != null && offset < nodeId.length;
- nodeId[offset] = (byte) (nodeId[offset] | 1);
- }
-
- private static String zeroTo64Chars(String str) {
- assert str.length() <= 64;
- if (str.length() < 64) {
- StringBuilder sb = new StringBuilder(64);
- for (int i = 0; i < 64 - str.length(); i++)
- sb.append('0');
- sb.append(str);
- return sb.toString();
- } else
- return str;
- }
-
}
projects / lgpl / argeo-commons.git / blobdiff