Differential D7974 Diff 27253 native/expo-modules/comm-expo-package/android/src/main/java/app/comm/android/utils/BlobUtilsModule.kt
Changeset View
Changeset View
Standalone View
Standalone View
native/expo-modules/comm-expo-package/android/src/main/java/app/comm/android/utils/BlobUtilsModule.kt
- This file was added.
| package app.comm.android.utils | |||||
| import com.facebook.react.bridge.ReactApplicationContext | |||||
| import com.facebook.react.modules.blob.BlobModule | |||||
| import expo.modules.kotlin.exception.CodedException | |||||
| import expo.modules.kotlin.modules.Module | |||||
| import expo.modules.kotlin.modules.ModuleDefinition | |||||
| import expo.modules.kotlin.records.Field | |||||
| import expo.modules.kotlin.records.Record | |||||
| import expo.modules.kotlin.records.Required | |||||
| import expo.modules.kotlin.typedarray.TypedArray | |||||
| import expo.modules.kotlin.typedarray.Uint8Array | |||||
| // This type corresponds to the BlobData interface in react-native | |||||
| class BlobMetadata: Record { | |||||
| @Required @Field val blobId: String = "" | |||||
| @Required @Field val size: Int = -1 | |||||
| @Required @Field val offset: Int = 0 | |||||
| } | |||||
| class BlobUtilsModule : Module() { | |||||
| override fun definition() = ModuleDefinition { | |||||
| Name("BlobUtils") | |||||
| Function("copyBlobToTypedArray") { blob: BlobMetadata, | |||||
| destination: Uint8Array -> | |||||
| val blobBytes = blobManager.resolve(blob.blobId, blob.offset, blob.size) | |||||
| ?: throw NoSuchBlobException(blob.blobId) | |||||
| destination.write(blobBytes, 0, blob.size) | |||||
| } | |||||
| Function("blobFromTypedArray") { source: TypedArray -> | |||||
| val bytes = ByteArray(source.byteLength).also { | |||||
| source.read(it, 0, source.byteLength) | |||||
| } | |||||
| val blobID = blobManager.store(bytes) | |||||
| ?: throw BlobCreationFailedException() | |||||
| return@Function blobID | |||||
| } | |||||
| } | |||||
| private val reactContext | |||||
| get() = requireNotNull( | |||||
| this.appContext.reactContext as? ReactApplicationContext | |||||
| ) { "React context is null or is not a ReactApplicationContext" } | |||||
| private val blobManager: BlobModule | |||||
| get() = requireNotNull( | |||||
| this.reactContext.getNativeModule(BlobModule::class.java) | |||||
| ) { "Couldn't load react-native's BlobModule" } | |||||
| } | |||||
| // region Exception definitions | |||||
| private class NoSuchBlobException(blobID: String) : | |||||
| CodedException("No blob data found for blob id=$blobID") | |||||
| private class BlobCreationFailedException : | |||||
| CodedException("Failed to store blob") | |||||
| // endregion | |||||