Struct oc_wasm_opencomputers::filesystem::LockedWriteHandle

pub struct LockedWriteHandle<'handle, 'invoker, 'buffer, B: Buffer> { /* private fields */ }

A writeable file handle on which methods can be invoked.

This type combines a writeable file handle, an Invoker that can be used to make method calls, and a scratch buffer used to perform CBOR encoding and decoding. A value of this type can be created by calling WriteHandle::lock, and it can be dropped to return the borrow of the invoker and buffer to the caller so they can be reused for other purposes.

The 'handle lifetime is the lifetime of the original file handle. The 'invoker lifetime is the lifetime of the invoker. The 'buffer lifetime is the lifetime of the buffer. The B type is the type of scratch buffer to use.

Implementations

impl<'handle, 'invoker, 'buffer, B: Buffer> LockedWriteHandle<'handle, 'invoker, 'buffer, B>

pub async fn seek(&mut self, basis: Seek, offset: i64) -> Result<u64, Error>

Seeks to a position in the file and returns the resulting absolute byte position.

Errors

• BadComponent
• NegativeSeek

pub async fn write(&mut self, bytes: &[u8]) -> Result<(), Error>

Writes bytes to the file.

Errors

• BadComponent
• DataTooLarge if the disk is out of space
• NotEnoughEnergy