Trait VfsStore

pub trait VfsStore<File, AppData> {
    // Required methods
    fn add_file(vfs: *mut sqlite3_vfs, file: &str, flags: i32) -> VfsResult<()>;
    fn contains_file(vfs: *mut sqlite3_vfs, file: &str) -> VfsResult<bool>;
    fn delete_file(vfs: *mut sqlite3_vfs, file: &str) -> VfsResult<()>;
    fn with_file<F: Fn(&File) -> i32>(
        vfs_file: &SQLiteVfsFile,
        f: F,
    ) -> VfsResult<i32>;
    fn with_file_mut<F: Fn(&mut File) -> i32>(
        vfs_file: &SQLiteVfsFile,
        f: F,
    ) -> VfsResult<i32>;

    // Provided methods
    unsafe fn app_data(vfs: *mut sqlite3_vfs) -> &'static VfsAppData<AppData> { ... }
    fn name2path(vfs: *mut sqlite3_vfs, file: &str) -> VfsResult<String> { ... }
}

Make changes to files

Required Methods

fn add_file(vfs: *mut sqlite3_vfs, file: &str, flags: i32) -> VfsResult<()>

Adding files to the Store, use for xOpen and xAccess

fn contains_file(vfs: *mut sqlite3_vfs, file: &str) -> VfsResult<bool>

Checks if the specified file exists in the Store, use for xOpen and xAccess

fn delete_file(vfs: *mut sqlite3_vfs, file: &str) -> VfsResult<()>

Delete the specified file in the Store, use for xClose and xDelete

fn with_file<F: Fn(&File) -> i32>( vfs_file: &SQLiteVfsFile, f: F, ) -> VfsResult<i32>

Read the file contents, use for xRead, xFileSize

fn with_file_mut<F: Fn(&mut File) -> i32>( vfs_file: &SQLiteVfsFile, f: F, ) -> VfsResult<i32>

Write the file contents, use for xWrite, xTruncate and xSync

Provided Methods

unsafe fn app_data(vfs: *mut sqlite3_vfs) -> &'static VfsAppData<AppData>

Convert pAppData to the type we need

Safety

As long as it is set through the abstract VFS interface, it is safe

fn name2path(vfs: *mut sqlite3_vfs, file: &str) -> VfsResult<String>

Get file path, use for xOpen

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors