Gleb Koval
e2764a5473
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- [x] Implements library according to instructions, with tests. - [x] GitHub Actions workflow to lint and test library. Reviewed-on: #1
34 lines
816 B
Kotlin
34 lines
816 B
Kotlin
package tinyvm
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import java.security.MessageDigest
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import java.time.Instant
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abstract class Object(
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val type: String,
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) {
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abstract val data: String
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fun hash(): String =
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MessageDigest
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.getInstance("SHA-1")
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.digest("$type ${data.length}\u0000$data".toByteArray())
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.toHex()
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}
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class Commit(
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val tree: Tree,
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val author: Author,
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val message: String,
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val timestamp: Instant,
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) : Object("commit") {
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// Use \n\n for end of header in-case additional metadata is implemented in the future.
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override val data: String
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get() = "tree ${tree.hash()}\nauthor $author\ntimestamp ${timestamp.epochSecond}\n\n$message"
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}
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data class Author(
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val name: String,
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val email: String,
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) {
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override fun toString(): String = "$name <$email>"
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} |