Add LZMA compression algorithm

Signed-off-by: Graham <gpe@openrs2.dev>

buildSrc/src/main/java/Versions.kt

@@ -24,4 +24,5 @@ object Versions {
     const val openrs2Natives = "2.0.1"
     const val shadowPlugin = "6.0.0"
     const val versionsPlugin = "0.29.0"
+    const val xz = "1.8"
 }

compress-cli/build.gradle.kts

@@ -24,7 +24,7 @@ publishing {
             description.set(
                 """
                 Tools for compressing and uncompressing headerless bzip2,
-                DEFLATE and gzip files.
+                DEFLATE, gzip and LZMA files.
             """.trimIndent()
             )
         }

compress-cli/src/main/java/dev/openrs2/compress/cli/CompressCommand.kt

@@ -8,6 +8,8 @@ import dev.openrs2.compress.cli.deflate.DeflateCommand
 import dev.openrs2.compress.cli.deflate.InflateCommand
 import dev.openrs2.compress.cli.gzip.GunzipCommand
 import dev.openrs2.compress.cli.gzip.GzipCommand
+import dev.openrs2.compress.cli.lzma.LzmaCommand
+import dev.openrs2.compress.cli.lzma.UnlzmaCommand
 
 fun main(args: Array<String>) = CompressCommand().main(args)
 
@@ -19,7 +21,9 @@ class CompressCommand : NoOpCliktCommand(name = "compress") {
             DeflateCommand(),
             InflateCommand(),
             GzipCommand(),
-            GunzipCommand()
+            GunzipCommand(),
+            LzmaCommand(),
+            UnlzmaCommand()
         )
     }
 }

compress-cli/src/main/java/dev/openrs2/compress/cli/lzma/LzmaCommand.kt

@@ -0,0 +1,31 @@
+package dev.openrs2.compress.cli.lzma
+
+import com.github.ajalt.clikt.core.CliktCommand
+import com.github.ajalt.clikt.parameters.options.default
+import com.github.ajalt.clikt.parameters.options.option
+import com.github.ajalt.clikt.parameters.options.validate
+import com.github.ajalt.clikt.parameters.types.defaultStdin
+import com.github.ajalt.clikt.parameters.types.defaultStdout
+import com.github.ajalt.clikt.parameters.types.inputStream
+import com.github.ajalt.clikt.parameters.types.int
+import com.github.ajalt.clikt.parameters.types.outputStream
+import dev.openrs2.compress.lzma.Lzma
+import org.tukaani.xz.LZMA2Options
+
+class LzmaCommand : CliktCommand(name = "lzma") {
+    private val input by option().inputStream().defaultStdin()
+    private val output by option().outputStream().defaultStdout()
+    private val level by option().int().default(LZMA2Options.PRESET_MAX).validate {
+        require(it >= LZMA2Options.PRESET_MIN && it <= LZMA2Options.PRESET_MAX) {
+            "--level must be between ${LZMA2Options.PRESET_MIN} and ${LZMA2Options.PRESET_MAX} inclusive"
+        }
+    }
+
+    override fun run() {
+        input.use { input ->
+            Lzma.createHeaderlessOutputStream(output, LZMA2Options(level)).use { output ->
+                System.err.println(input.copyTo(output))
+            }
+        }
+    }
+}

compress-cli/src/main/java/dev/openrs2/compress/cli/lzma/UnlzmaCommand.kt

@@ -0,0 +1,25 @@
+package dev.openrs2.compress.cli.lzma
+
+import com.github.ajalt.clikt.core.CliktCommand
+import com.github.ajalt.clikt.parameters.options.option
+import com.github.ajalt.clikt.parameters.options.required
+import com.github.ajalt.clikt.parameters.types.defaultStdin
+import com.github.ajalt.clikt.parameters.types.defaultStdout
+import com.github.ajalt.clikt.parameters.types.inputStream
+import com.github.ajalt.clikt.parameters.types.long
+import com.github.ajalt.clikt.parameters.types.outputStream
+import dev.openrs2.compress.lzma.Lzma
+
+class UnlzmaCommand : CliktCommand(name = "unlzma") {
+    private val input by option().inputStream().defaultStdin()
+    private val length by option().long().required()
+    private val output by option().outputStream().defaultStdout()
+
+    override fun run() {
+        Lzma.createHeaderlessInputStream(input, length).use { input ->
+            output.use { output ->
+                input.copyTo(output)
+            }
+        }
+    }
+}

compress/build.gradle.kts

@@ -4,7 +4,10 @@ plugins {
 }
 
 dependencies {
+    api("org.tukaani:xz:${Versions.xz}")
+
     implementation(project(":util"))
+    implementation("com.google.guava:guava:${Versions.guava}")
     implementation("org.apache.commons:commons-compress:${Versions.commonsCompress}")
 }
 
@@ -17,7 +20,7 @@ publishing {
             name.set("OpenRS2 Compression")
             description.set(
                 """
-                Provides headerless implementations of bzip2 and gzip.
+                Provides headerless implementations of bzip2, gzip and LZMA.
             """.trimIndent()
             )
         }

compress/src/main/java/dev/openrs2/compress/lzma/Lzma.kt

@@ -0,0 +1,28 @@
+package dev.openrs2.compress.lzma
+
+import com.google.common.io.LittleEndianDataInputStream
+import com.google.common.io.LittleEndianDataOutputStream
+import org.tukaani.xz.LZMA2Options
+import org.tukaani.xz.LZMAInputStream
+import org.tukaani.xz.LZMAOutputStream
+import java.io.InputStream
+import java.io.OutputStream
+
+object Lzma {
+    fun createHeaderlessInputStream(input: InputStream, length: Long): InputStream {
+        val headerInput = LittleEndianDataInputStream(input)
+
+        val properties = headerInput.readByte()
+        val dictionarySize = headerInput.readInt()
+
+        return LZMAInputStream(input, length, properties, dictionarySize)
+    }
+
+    fun createHeaderlessOutputStream(output: OutputStream, options: LZMA2Options): OutputStream {
+        val headerOutput = LittleEndianDataOutputStream(output)
+        headerOutput.writeByte((options.pb * 5 + options.lp) * 9 + options.lc)
+        headerOutput.writeInt(options.dictSize)
+
+        return LZMAOutputStream(output, options, false)
+    }
+}