Trait VfsFile 

pub trait VfsFile {
    // Required methods
    fn read(&self, buf: &mut [u8], offset: usize) -> Result<bool, VfsError>;
    fn write(&mut self, buf: &[u8], offset: usize) -> Result<(), VfsError>;
    fn truncate(&mut self, size: usize) -> Result<(), VfsError>;
    fn flush(&mut self) -> Result<(), VfsError>;
    fn size(&self) -> Result<usize, VfsError>;
}

A trait defining the basic I/O capabilities required for a VFS file implementation.

Required Methods

fn read(&self, buf: &mut [u8], offset: usize) -> Result<bool, VfsError>

Abstraction of xRead, returns true for SQLITE_OK and false for SQLITE_IOERR_SHORT_READ

fn write(&mut self, buf: &[u8], offset: usize) -> Result<(), VfsError>

Abstraction of xWrite

fn truncate(&mut self, size: usize) -> Result<(), VfsError>

Abstraction of xTruncate

fn flush(&mut self) -> Result<(), VfsError>

Abstraction of xSync

fn size(&self) -> Result<usize, VfsError>

Abstraction of xFileSize

Implementors

impl VfsFile for MemFile

impl VfsFile for MemChunksFile