Do some work on interactables

1 files changed, 38 insertions, 0 deletions

diff --git a/src/main/kotlin/io/dico/parcels2/storage/DataConverters.kt b/src/main/kotlin/io/dico/parcels2/storage/DataConverters.kt
new file mode 100644
index 0000000..80f41b2
--- /dev/null
+++ b/src/main/kotlin/io/dico/parcels2/storage/DataConverters.kt
@@ -0,0 +1,38 @@
+package io.dico.parcels2.storage
+
+import java.lang.IllegalArgumentException
+import java.nio.ByteBuffer
+import java.util.UUID
+
+/* For putting it into the database */
+fun UUID.toByteArray(): ByteArray =
+    ByteBuffer.allocate(16).apply {
+        putLong(mostSignificantBits)
+        putLong(leastSignificantBits)
+    }.array()
+
+/* For getting it out of the database */
+fun ByteArray.toUUID(): UUID =
+    ByteBuffer.wrap(this).run {
+        val mostSignificantBits = getLong()
+        val leastSignificantBits = getLong()
+        UUID(mostSignificantBits, leastSignificantBits)
+    }
+
+/* For putting it into the database */
+fun IntArray.toByteArray(): ByteArray =
+    ByteBuffer.allocate(size * Int.SIZE_BYTES).also { buf ->
+        buf.asIntBuffer().put(this)
+    }.array()
+
+/* For getting it out of the database */
+fun ByteArray.toIntArray(): IntArray {
+    if (this.size % Int.SIZE_BYTES != 0)
+        throw IllegalArgumentException("Size must be divisible by ${Int.SIZE_BYTES}")
+
+    return ByteBuffer.wrap(this).run {
+        IntArray(remaining() / 4).also { array ->
+            asIntBuffer().get(array)
+        }
+    }
+}
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