Struct OpenOptions 

pub struct OpenOptions(/* private fields */);

How to open a file: the options of std’s OpenOptions, opened on the blocking pool into a Handle.

Implementations

impl OpenOptions

pub fn new() -> Self

No option set: neither read nor write.

pub fn read(&mut self, read: bool) -> &mut Self

Opens for reading.

pub fn write(&mut self, write: bool) -> &mut Self

Opens for writing.

pub fn append(&mut self, append: bool) -> &mut Self

Opens for writing at the end, whatever the cursor.

pub fn truncate(&mut self, truncate: bool) -> &mut Self

Cuts an existing file down to nothing when it opens.

pub fn create(&mut self, create: bool) -> &mut Self

Creates the file if it does not exist.

pub fn create_new(&mut self, create_new: bool) -> &mut Self

Creates the file, failing if it exists.

pub fn mode(&mut self, mode: u32) -> &mut Self

The mode bits a created file gets (before the umask).

pub fn custom_flags(&mut self, flags: i32) -> &mut Self

Flags passed to open beside the ones the options set.

pub async fn open(&self, path: impl AsRef<Path>) -> Result<Handle<File>>

Opens the file at path with these options.

Trait Implementations

impl Clone for OpenOptions

fn clone(&self) -> OpenOptions

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OpenOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for OpenOptions

fn default() -> Self

Returns the “default value” for a type.

impl From<OpenOptions> for OpenOptions

fn from(options: OpenOptions) -> Self

Converts to this type from the input type.