This library provides a GVariant parser in pure Java.
jgvariant-core
provides Decoder<T>
, which read a given type of GVariant-encoded value from a ByteBuffer. The class also contains factory methods to acquire those instances.
The various subclasses of Decoder
together implement the GVariant serialization specification.
jgvariant-ostree
provides instances of Decoder<T>
for various GVariant types used in OSTree repositories.
To parse a GVariant value of type "a(si)"
, which is an array of pairs of String and int
, you can use the following code:
record ExampleRecord(String s, int i) {} var decoder = Decoder.ofArray( Decoder.ofStructure( ExampleRecord.class, Decoder.ofString(StandardCharsets.UTF_8), Decoder.ofInt().withByteOrder(ByteOrder.LITTLE_ENDIAN))); byte[] bytes = ...; List<ExampleRecord> example = decoder.decode(ByteBuffer.wrap(bytes));
<project> ... <dependencyManagement> ... <dependencies> <dependency> <groupId>eu.mulk.jgvariant</groupId> <artifactId>jgvariant-bom</artifactId> <version>0.1.4</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> ... </dependencyManagement> <dependencies> ... <dependency> <groupId>eu.mulk.jgvariant</groupId> <artifactId>jgvariant-core</artifactId> </dependency> <dependency> <groupId>eu.mulk.jgvariant</groupId> <artifactId>jgvariant-ostree</artifactId> </dependency> ... </dependencies> ... </project>
dependencies { ... implementation(platform("eu.mulk.jgvariant:jgvariant-bom:0.1.4") implementation("eu.mulk.jgvariant:jgvariant-core") implementation("eu.mulk.jgvariant:jgvariant-ostree") ... }