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include kotlin_module files to final fat aar
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65 changes: 65 additions & 0 deletions
65
grease/src/main/kotlin/io/deepmedia/tools/grease/KotlinModuleShadowTransformer.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,65 @@ | ||
| package io.deepmedia.tools.grease | ||
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| import com.github.jengelman.gradle.plugins.shadow.transformers.CacheableTransformer | ||
| import com.github.jengelman.gradle.plugins.shadow.transformers.Transformer | ||
| import com.github.jengelman.gradle.plugins.shadow.transformers.TransformerContext | ||
| import org.gradle.api.file.FileTreeElement | ||
| import kotlinx.metadata.jvm.KotlinModuleMetadata | ||
| import kotlinx.metadata.jvm.UnstableMetadataApi | ||
| import org.apache.tools.zip.ZipEntry | ||
| import org.apache.tools.zip.ZipOutputStream | ||
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| // from kotlin sources | ||
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| @CacheableTransformer | ||
| @OptIn(UnstableMetadataApi::class) | ||
| internal class KotlinModuleShadowTransformer(private val logger: Logger) : Transformer { | ||
| @Suppress("ArrayInDataClass") | ||
| private data class Entry(val path: String, val bytes: ByteArray) | ||
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| private val data = mutableListOf<Entry>() | ||
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| override fun getName() = "KotlinModuleShadowTransformer" | ||
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| override fun canTransformResource(element: FileTreeElement): Boolean = | ||
| element.path.substringAfterLast(".") == KOTLIN_MODULE | ||
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| override fun transform(context: TransformerContext) { | ||
| fun relocate(content: String): String = | ||
| context.relocators | ||
| .filterNot { it is RClassRelocator } | ||
| .fold(content) { acc, relocator -> relocator.applyToSourceContent(acc) } | ||
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| logger.i { "Transforming kotlin_module ${context.path}" } | ||
| val metadata = KotlinModuleMetadata.read(context.`is`.readBytes()) | ||
| val module = metadata.kmModule | ||
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| val packageParts = module.packageParts.toMap() | ||
| module.packageParts.clear() | ||
| packageParts.map { (fqName, parts) -> | ||
| require(parts.multiFileClassParts.isEmpty()) { parts.multiFileClassParts } // There are no multi-file class parts in core | ||
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| val fileFacades = parts.fileFacades.toList() | ||
| parts.fileFacades.clear() | ||
| fileFacades.mapTo(parts.fileFacades) { relocate(it) } | ||
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| relocate(fqName) to parts | ||
| }.toMap(module.packageParts) | ||
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| data += Entry(context.path, metadata.write()) | ||
| } | ||
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| override fun hasTransformedResource(): Boolean = data.isNotEmpty() | ||
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| override fun modifyOutputStream(os: ZipOutputStream, preserveFileTimestamps: Boolean) { | ||
| for ((path, bytes) in data) { | ||
| os.putNextEntry(ZipEntry(path)) | ||
| os.write(bytes) | ||
| } | ||
| data.clear() | ||
| } | ||
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| companion object { | ||
| const val KOTLIN_MODULE = "kotlin_module" | ||
| } | ||
| } |
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