feat: android implementation for hardlinks and symlinks

Author: mjmasn

android/src/main/java/com/alpha0010/fs/FileAccessModule.kt

@@ -25,6 +25,7 @@ import java.io.OutputStream
 import java.lang.ref.WeakReference
 import java.security.MessageDigest
 import java.util.zip.ZipInputStream
+import java.nio.file.Files
 
 class FileAccessModule internal constructor(context: ReactApplicationContext) :
   FileAccessSpec(context) {
@@ -275,6 +276,40 @@ class FileAccessModule internal constructor(context: ReactApplicationContext) :
     promise.reject("ERR", "App group unavailable on Android.")
   }
 
+  @ReactMethod
+  override fun hardlink(source: String, target: String, promise: Promise) {
+    ioScope.launch {
+      try {
+        if (source.isContentUri() || target.isContentUri()) {
+          promise.reject("ERR", "Hard links are not supported for content URIs")
+          return@launch
+        }
+
+        val sourceFile = parsePathToFile(source)
+        val targetFile = parsePathToFile(target)
+
+        if (!sourceFile.exists()) {
+          promise.reject("ENOENT", "Source file '$source' does not exist")
+          return@launch
+        }
+
+        if (targetFile.exists()) {
+          promise.reject("EEXIST", "Target file '$target' already exists")
+          return@launch
+        }
+
+        try {
+          Files.createLink(targetFile.toPath(), sourceFile.toPath())
+          promise.resolve(null)
+        } catch (e: IOException) {
+          promise.reject("ERR", "Failed to create hard link: ${e.message}")
+        }
+      } catch (e: Throwable) {
+        promise.reject(e)
+      }
+    }
+  }
+
   @ReactMethod
   override fun hash(path: String, algorithm: String, promise: Promise) {
     ioScope.launch {
@@ -455,6 +490,40 @@ class FileAccessModule internal constructor(context: ReactApplicationContext) :
     }
   }
 
+  @ReactMethod
+  override fun symlink(source: String, target: String, promise: Promise) {
+    ioScope.launch {
+      try {
+        if (source.isContentUri() || target.isContentUri()) {
+          promise.reject("ERR", "Symbolic links are not supported for content URIs")
+          return@launch
+        }
+
+        val sourceFile = parsePathToFile(source)
+        val targetFile = parsePathToFile(target)
+
+        if (!sourceFile.exists()) {
+          promise.reject("ENOENT", "Source file '$source' does not exist")
+          return@launch
+        }
+
+        if (targetFile.exists()) {
+          promise.reject("EEXIST", "Target file '$target' already exists")
+          return@launch
+        }
+
+        try {
+          Files.createSymbolicLink(targetFile.toPath(), sourceFile.toPath())
+          promise.resolve(null)
+        } catch (e: IOException) {
+          promise.reject("ERR", "Failed to create symbolic link: ${e.message}")
+        }
+      } catch (e: Throwable) {
+        promise.reject(e)
+      }
+    }
+  }
+
   @ReactMethod
   override fun unlink(path: String, promise: Promise) {
     ioScope.launch {

android/src/oldarch/FileAccessSpec.kt

@@ -24,6 +24,7 @@ abstract class FileAccessSpec internal constructor(context: ReactApplicationCont
   abstract fun exists(path: String, promise: Promise)
   abstract fun fetch(requestId: Double, resource: String, init: ReadableMap)
   abstract fun getAppGroupDir(groupName: String, promise: Promise)
+  abstract fun hardlink(source: String, target: String, promise: Promise)
   abstract fun hash(path: String, algorithm: String, promise: Promise)
   abstract fun isDir(path: String, promise: Promise)
   abstract fun ls(path: String, promise: Promise)
@@ -33,6 +34,7 @@ abstract class FileAccessSpec internal constructor(context: ReactApplicationCont
   abstract fun readFileChunk(path: String, offset: Double, length: Double, encoding: String, promise: Promise)
   abstract fun stat(path: String, promise: Promise)
   abstract fun statDir(path: String, promise: Promise)
+  abstract fun symlink(source: String, target: String, promise: Promise)
   abstract fun unlink(path: String, promise: Promise)
   abstract fun unzip(source: String, target: String, promise: Promise)
   abstract fun writeFile(path: String, data: String, encoding: String, promise: Promise)