Move to storage folder

crates/librqbit/src/storage/mod.rs

@@ -0,0 +1,52 @@
+pub mod example;
+pub mod filesystem;
+
+use std::path::Path;
+
+use crate::torrent_state::ManagedTorrentInfo;
+
+pub trait StorageFactory: Send + Sync {
+    fn init_storage(&self, info: &ManagedTorrentInfo) -> anyhow::Result<Box<dyn TorrentStorage>>;
+
+    fn output_folder(&self) -> Option<&Path> {
+        None
+    }
+}
+
+pub trait TorrentStorage: Send + Sync {
+    fn pread_exact(&self, file_id: usize, offset: u64, buf: &mut [u8]) -> anyhow::Result<()>;
+
+    fn pwrite_all(&self, file_id: usize, offset: u64, buf: &[u8]) -> anyhow::Result<()>;
+
+    fn remove_file(&self, file_id: usize, filename: &Path) -> anyhow::Result<()>;
+
+    fn ensure_file_length(&self, file_id: usize, length: u64) -> anyhow::Result<()>;
+
+    fn take(&self) -> anyhow::Result<Box<dyn TorrentStorage>>;
+
+    fn output_folder(&self) -> Option<&Path> {
+        None
+    }
+}
+
+impl TorrentStorage for Box<dyn TorrentStorage> {
+    fn pread_exact(&self, file_id: usize, offset: u64, buf: &mut [u8]) -> anyhow::Result<()> {
+        (**self).pread_exact(file_id, offset, buf)
+    }
+
+    fn pwrite_all(&self, file_id: usize, offset: u64, buf: &[u8]) -> anyhow::Result<()> {
+        (**self).pwrite_all(file_id, offset, buf)
+    }
+
+    fn remove_file(&self, file_id: usize, filename: &Path) -> anyhow::Result<()> {
+        (**self).remove_file(file_id, filename)
+    }
+
+    fn ensure_file_length(&self, file_id: usize, length: u64) -> anyhow::Result<()> {
+        (**self).ensure_file_length(file_id, length)
+    }
+
+    fn take(&self) -> anyhow::Result<Box<dyn TorrentStorage>> {
+        (**self).take()
+    }
+}