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Make UUID Identfier only a distinct byte array

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This commit is contained in:
Feoramund
2024-06-22 18:21:31 -04:00
parent 31873ed466
commit 6da99b888a
5 changed files with 40 additions and 50 deletions
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core/encoding/uuid/generation.odin
+18 -17
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@@ -29,15 +29,15 @@ generate_v3_bytes :: proc(
ctx: md5.Context
md5.init(&ctx)
md5.update(&ctx, namespace.bytes[:])
md5.update(&ctx, namespace[:])
md5.update(&ctx, name)
md5.final(&ctx, result.bytes[:])
md5.final(&ctx, result[:])
result.bytes[VERSION_BYTE_INDEX] &= 0x0F
result.bytes[VERSION_BYTE_INDEX] |= 0x30
result[VERSION_BYTE_INDEX] &= 0x0F
result[VERSION_BYTE_INDEX] |= 0x30
result.bytes[VARIANT_BYTE_INDEX] &= 0x3F
result.bytes[VARIANT_BYTE_INDEX] |= 0x80
result[VARIANT_BYTE_INDEX] &= 0x3F
result[VARIANT_BYTE_INDEX] |= 0x80
return
}
@@ -79,13 +79,14 @@ Returns:
- result: The generated UUID.
*/
generate_v4 :: proc() -> (result: Identifier) {
result.integer = transmute(u128be)rand.uint128()
bytes_generated := rand.read(result[:])
assert(bytes_generated == 16, "RNG failed to generate 16 bytes for UUID v4.")
result.bytes[VERSION_BYTE_INDEX] &= 0x0F
result.bytes[VERSION_BYTE_INDEX] |= 0x40
result[VERSION_BYTE_INDEX] &= 0x0F
result[VERSION_BYTE_INDEX] |= 0x40
result.bytes[VARIANT_BYTE_INDEX] &= 0x3F
result.bytes[VARIANT_BYTE_INDEX] |= 0x80
result[VARIANT_BYTE_INDEX] &= 0x3F
result[VARIANT_BYTE_INDEX] |= 0x80
return
}
@@ -115,17 +116,17 @@ generate_v5_bytes :: proc(
ctx: sha1.Context
sha1.init(&ctx)
sha1.update(&ctx, namespace.bytes[:])
sha1.update(&ctx, namespace[:])
sha1.update(&ctx, name)
sha1.final(&ctx, digest[:])
mem.copy_non_overlapping(&result.bytes, &digest, 16)
mem.copy_non_overlapping(&result, &digest, 16)
result.bytes[VERSION_BYTE_INDEX] &= 0x0F
result.bytes[VERSION_BYTE_INDEX] |= 0x50
result[VERSION_BYTE_INDEX] &= 0x0F
result[VERSION_BYTE_INDEX] |= 0x50
result.bytes[VARIANT_BYTE_INDEX] &= 0x3F
result.bytes[VARIANT_BYTE_INDEX] |= 0x80
result[VARIANT_BYTE_INDEX] &= 0x3F
result[VARIANT_BYTE_INDEX] |= 0x80
return
}