Struct ScopedFile 

pub struct ScopedFile<'f> { /* private fields */ }

The FILE lent to the closure passed to StringFile::with_file.

The FILE points back at its StringFile, so it must not outlive the with_file call. Safe code only ever gets a &mut ScopedFile<'f> whose 'f is unique to one with_file call, and can never get a &mut FILE, so the FILE can be neither moved out nor swapped with the FILE of another (possibly shorter-lived) StringFile.

Implementations

impl ScopedFile<'_>

pub fn write(&self, bytes: &[u8]) -> c_int

Writes bytes to the StringFile, like FILE::write.

pub fn as_mut_ptr(&mut self) -> *mut FILE

Returns a pointer to the FILE, for passing to C++ routines that take a FILE*.

The pointer must not be used after the with_file closure returns.

Trait Implementations

impl Write for ScopedFile<'_>

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a [char] into this writer, returning whether the write succeeded.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Glue for usage of the [write!] macro with implementors of this trait.