Struct OpenOptions 

pub struct OpenOptions {
    pub read: bool,
    pub write: bool,
    pub create: bool,
    pub create_new: bool,
    pub truncate: bool,
    pub append: bool,
}

Options for opening a file.

This struct provides a builder-style API for configuring how a file should be opened, similar to std::fs::OpenOptions.

Fields

read: bool

Open file for reading.

write: bool

Open file for writing.

create: bool

Create the file if it doesn’t exist.

create_new: bool

Create a new file, failing if it already exists.

truncate: bool

Truncate the file to zero length.

append: bool

Append to the end of the file.

Implementations

impl OpenOptions

pub fn new() -> Self

Create new open options with all flags set to false.

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

Set the read flag.

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

Set the write flag.

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

Set the create flag.

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

Set the create_new flag.

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

Set the truncate flag.

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

Set the append flag.

pub fn read_only() -> Self

Create options for read-only access.

pub fn create_write() -> Self

Create options for creating and writing a new file (truncating if exists).

pub fn read_write() -> Self

Create options for read and write access.

pub fn create_new_write() -> Self

Create options for creating a new file for writing (fails if exists).

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() -> OpenOptions

Returns the “default value” for a type.