Struct mynewt::Strn

pub struct Strn<'a> {
    pub rep: StrnRep<'a>,
}

Represents a null-terminated string, suitable for passing to Mynewt APIs as * const char. The string could be a null-terminated byte string created in Rust, or a pointer to a null-terminated string returned by C. Pointer may be null.

Fields

rep: StrnRep<'a>

Either a byte string terminated with null, or a pointer to a null-terminated string

Implementations

impl<'a> Strn<'a>

pub fn new(bs: &[u8]) -> Strn<'_>

Create a new Strn with a byte string. Fail if the last byte is not zero.

Strn::new(b"network\0")
strn!("network")

pub fn from_cstr(cstr: *const u8) -> Strn<'a>

Create a new Strn with a null-terminated string pointer returned by C.

pub fn as_ptr(&self) -> *const u8

Return a pointer to the string

pub fn len(&self) -> usize

Return the length of the string, excluding the terminating null. For safety, we limit to 128.

pub fn is_empty(&self) -> bool

Return true if the string is empty

pub fn as_cstr(&self) -> *const u8

Return the byte string as a null-terminated * const char C-style string. Fail if the last byte is not zero.

pub fn as_bytestr(&self) -> &'a [u8]

Return the byte string. Fail if the last byte is not zero.

pub fn validate(&self)

Fail if the last byte is not zero.

pub fn validate_bytestr(bs: &'static [u8])

Fail if the last byte is not zero.

Trait Implementations

impl<'a> Clone for Strn<'a>

fn clone(&self) -> Strn<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Strn<'a>

impl<'a> Send for Strn<'a>

Allow threads to share Strn, since it is static.

impl<'a> Sync for Strn<'a>

Allow threads to share Strn, since it is static.

impl<'a> ToBytesOptionalNull for Strn<'a>

Convert the type to array of bytes that may or may not end with null. Strn always ends with null.

fn to_bytes_optional_nul(&self) -> &[u8]

Convert the type to array of bytes that may or may not end with null. Strn always ends with null.