graft_sqlite/
file.rs

1use std::fmt::Debug;
2
3use culprit::Result;
4use enum_dispatch::enum_dispatch;
5use mem_file::MemFile;
6use sqlite_plugin::{flags::LockLevel, vfs::VfsHandle};
7use vol_file::VolFile;
8
9use crate::vfs::ErrCtx;
10
11pub mod mem_file;
12pub mod vol_file;
13
14#[enum_dispatch]
15pub trait VfsFile: Debug {
16    fn readonly(&self) -> bool;
17    fn in_memory(&self) -> bool;
18
19    fn lock(&mut self, level: LockLevel) -> Result<(), ErrCtx>;
20    fn unlock(&mut self, level: LockLevel) -> Result<(), ErrCtx>;
21
22    fn file_size(&mut self) -> Result<usize, ErrCtx>;
23    fn truncate(&mut self, size: usize) -> Result<(), ErrCtx>;
24
25    fn write(&mut self, offset: usize, data: &[u8]) -> Result<usize, ErrCtx>;
26    fn read(&mut self, offset: usize, data: &mut [u8]) -> Result<usize, ErrCtx>;
27}
28
29#[enum_dispatch(VfsFile)]
30#[derive(Debug)]
31pub enum FileHandle {
32    MemFile,
33    VolFile,
34}
35
36impl VfsHandle for FileHandle {
37    fn readonly(&self) -> bool {
38        VfsFile::readonly(self)
39    }
40
41    fn in_memory(&self) -> bool {
42        VfsFile::in_memory(self)
43    }
44}
graft_sqlite/file.rs

graft_sqlite/
file.rs
