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-rw-r--r--jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/Checksum.java14
-rw-r--r--jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaMetaEntry.java4
-rw-r--r--jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaOperation.java17
-rw-r--r--jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaPartPayload.java2
-rw-r--r--jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaSuperblock.java29
5 files changed, 22 insertions, 44 deletions
diff --git a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/Checksum.java b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/Checksum.java
index 829664e..e9bdf84 100644
--- a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/Checksum.java
+++ b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/Checksum.java
@@ -18,7 +18,11 @@ public record Checksum(ByteString byteString) {
private static final int SIZE = 32;
private static final Decoder<Checksum> DECODER =
- ByteString.decoder().map(Checksum::new, Checksum::byteString);
+ ByteString.decoder().map(Checksum::new, Checksum::optimizedByteString);
+
+ private static final ByteString NULL_BYTESTRING = new ByteString(new byte[0]);
+
+ private static final Checksum ZERO = new Checksum(new ByteString(new byte[SIZE]));
public Checksum {
if (byteString.size() == 0) {
@@ -47,7 +51,11 @@ public record Checksum(ByteString byteString) {
* @return a checksum whose bits are all zero.
*/
public static Checksum zero() {
- return new Checksum(new ByteString(new byte[SIZE]));
+ return ZERO;
+ }
+
+ public ByteString optimizedByteString() {
+ return isEmpty() ? NULL_BYTESTRING : byteString;
}
/**
@@ -56,7 +64,7 @@ public record Checksum(ByteString byteString) {
* @return {@code true} if the byte string is equal to {@link #zero()}, {@code false} otherwise.
*/
public boolean isEmpty() {
- return equals(zero());
+ return equals(ZERO);
}
/**
diff --git a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaMetaEntry.java b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaMetaEntry.java
index 2be0426..71419c6 100644
--- a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaMetaEntry.java
+++ b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaMetaEntry.java
@@ -67,8 +67,8 @@ public record DeltaMetaEntry(
var output = new ByteArrayOutputStream();
for (var deltaObject : deltaObjects) {
- output.write(deltaObject.objectType.byteValue());
- output.writeBytes(deltaObject.checksum.byteString().bytes());
+ output.write(deltaObject.objectType().byteValue());
+ output.writeBytes(deltaObject.checksum().byteString().bytes());
}
return output.toByteArray();
diff --git a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaOperation.java b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaOperation.java
index d753a48..42b7056 100644
--- a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaOperation.java
+++ b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaOperation.java
@@ -69,16 +69,16 @@ public sealed interface DeltaOperation {
}
default void writeTo(ByteArrayOutputStream output) {
- if (this instanceof OpenSpliceAndCloseMeta openSpliceAndCloseMeta) {
- output.write(DeltaOperationType.OPEN_SPLICE_AND_CLOSE.byteValue());
- writeVarint64(output, openSpliceAndCloseMeta.offset);
- writeVarint64(output, openSpliceAndCloseMeta.size);
- } else if (this instanceof OpenSpliceAndCloseReal openSpliceAndCloseReal) {
+ if (this instanceof OpenSpliceAndCloseReal openSpliceAndCloseReal) {
output.write(DeltaOperationType.OPEN_SPLICE_AND_CLOSE.byteValue());
writeVarint64(output, openSpliceAndCloseReal.modeOffset);
writeVarint64(output, openSpliceAndCloseReal.xattrOffset);
writeVarint64(output, openSpliceAndCloseReal.size);
writeVarint64(output, openSpliceAndCloseReal.offset);
+ } else if (this instanceof OpenSpliceAndCloseMeta openSpliceAndCloseMeta) {
+ output.write(DeltaOperationType.OPEN_SPLICE_AND_CLOSE.byteValue());
+ writeVarint64(output, openSpliceAndCloseMeta.size);
+ writeVarint64(output, openSpliceAndCloseMeta.offset);
} else if (this instanceof Open open) {
output.write(DeltaOperationType.OPEN.byteValue());
writeVarint64(output, open.modeOffset);
@@ -130,16 +130,13 @@ public sealed interface DeltaOperation {
* @see #readVarint64
*/
private static void writeVarint64(ByteArrayOutputStream output, long value) {
- while (value != 0) {
+ do {
byte b = (byte) (value & 0x7F);
value >>= 7;
if (value != 0) {
b |= (byte) 0x80;
}
output.write(b);
- if (value == 0) {
- break;
- }
- }
+ } while (value != 0);
}
}
diff --git a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaPartPayload.java b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaPartPayload.java
index 31c192d..ccd5630 100644
--- a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaPartPayload.java
+++ b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaPartPayload.java
@@ -156,7 +156,7 @@ public record DeltaPartPayload(
Decoder.ofByteArray()
.map(
bytes -> parseDeltaOperationList(bytes, objectTypes),
- deltaOperations -> serializeDeltaOperationList(deltaOperations)))
+ DeltaPartPayload::serializeDeltaOperationList))
.contramap(DeltaPartPayload::decompress, DeltaPartPayload::compress);
}
}
diff --git a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaSuperblock.java b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaSuperblock.java
index 9513fa0..b8143af 100644
--- a/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaSuperblock.java
+++ b/jgvariant-ostree/src/main/java/eu/mulk/jgvariant/ostree/DeltaSuperblock.java
@@ -5,16 +5,11 @@
package eu.mulk.jgvariant.ostree;
import eu.mulk.jgvariant.core.Decoder;
-import eu.mulk.jgvariant.core.Signature;
-import eu.mulk.jgvariant.core.Variant;
import java.io.ByteArrayOutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
-import java.text.ParseException;
import java.util.ArrayList;
-import java.util.HashMap;
import java.util.List;
-import java.util.Map;
/**
* A static delta.
@@ -78,29 +73,7 @@ public record DeltaSuperblock(
DeltaSuperblock::parseDeltaNameList, DeltaSuperblock::serializeDeltaNameList),
Decoder.ofArray(DeltaMetaEntry.decoder()).withByteOrder(ByteOrder.LITTLE_ENDIAN),
Decoder.ofArray(DeltaFallback.decoder()).withByteOrder(ByteOrder.LITTLE_ENDIAN))
- .map(DeltaSuperblock::byteSwappedIfBigEndian, DeltaSuperblock::withSpecifiedByteOrder);
-
- private DeltaSuperblock withSpecifiedByteOrder() {
- Map<String, Variant> extendedMetadataMap = new HashMap<>(metadata().fields());
-
- try {
- extendedMetadataMap.putIfAbsent(
- "ostree.endianness", new Variant(Signature.parse("y"), (byte) 'l'));
- } catch (ParseException e) {
- // impossible
- throw new IllegalStateException(e);
- }
-
- return new DeltaSuperblock(
- new Metadata(extendedMetadataMap),
- timestamp,
- fromChecksum,
- toChecksum,
- commit,
- dependencies,
- entries,
- fallbacks);
- }
+ .map(DeltaSuperblock::byteSwappedIfBigEndian, DeltaSuperblock::byteSwappedIfBigEndian);
private DeltaSuperblock byteSwappedIfBigEndian() {
// Fix up the endianness of the 'entries' and 'fallbacks' fields, which have