Create file driver and implement file reader

1 files changed, 38 insertions, 0 deletions

diff --git a/src/file.rs b/src/file.rs
new file mode 100644
index 0000000..f284b98
--- /dev/null
+++ b/src/file.rs
@@ -0,0 +1,38 @@
+use crate::driver::FileDriver;
+use std::io::{Read, Result as IoResult, Seek, Write};
+
+pub struct ArchiveFile<D: FileDriver> {
+    pub(crate) driver: D,
+}
+
+impl<D: FileDriver> ArchiveFile<D> {
+    pub fn new(driver: D) -> Self {
+        Self { driver }
+    }
+
+    pub fn info(&self) -> &D::FileInfo {
+        self.driver.info()
+    }
+}
+
+impl<D: FileDriver + Read> Read for ArchiveFile<D> {
+    fn read(&mut self, buf: &mut [u8]) -> IoResult<usize> {
+        self.driver.read(buf)
+    }
+}
+
+impl<D: FileDriver + Write> Write for ArchiveFile<D> {
+    fn write(&mut self, buf: &[u8]) -> IoResult<usize> {
+        self.driver.write(buf)
+    }
+
+    fn flush(&mut self) -> IoResult<()> {
+        self.driver.flush()
+    }
+}
+
+impl<D: FileDriver + Seek> Seek for ArchiveFile<D> {
+    fn seek(&mut self, pos: std::io::SeekFrom) -> IoResult<u64> {
+        self.driver.seek(pos)
+    }
+}