pub struct NamedFile(/* private fields */);
Expand description
A Responder
that sends file data with a Content-Type based on its
file extension.
Example
A simple static file server mimicking FileServer
:
use std::path::{PathBuf, Path};
use rocket::fs::{NamedFile, relative};
#[get("/file/<path..>")]
pub async fn second(path: PathBuf) -> Option<NamedFile> {
let mut path = Path::new(relative!("static")).join(path);
if path.is_dir() {
path.push("index.html");
}
NamedFile::open(path).await.ok()
}
Always prefer to use FileServer
which has more functionality and a
pithier API.
Implementations§
source§impl NamedFile
impl NamedFile
sourcepub async fn open<P: AsRef<Path>>(path: P) -> Result<NamedFile>
pub async fn open<P: AsRef<Path>>(path: P) -> Result<NamedFile>
Attempts to open a file in read-only mode.
Errors
This function will return an error if path does not already exist. Other
errors may also be returned according to
OpenOptions::open()
.
Example
use rocket::fs::NamedFile;
#[get("/")]
async fn index() -> Option<NamedFile> {
NamedFile::open("index.html").await.ok()
}
sourcepub fn file(&self) -> &File
pub fn file(&self) -> &File
Retrieve the underlying File
.
Example
use rocket::fs::NamedFile;
let named_file = NamedFile::open("index.html").await?;
let file = named_file.file();
sourcepub fn file_mut(&mut self) -> &mut File
pub fn file_mut(&mut self) -> &mut File
Retrieve a mutable borrow to the underlying File
.
Example
use rocket::fs::NamedFile;
let mut named_file = NamedFile::open("index.html").await?;
let file = named_file.file_mut();
Methods from Deref<Target = File>§
sourcepub async fn sync_all(&self) -> impl Future<Output = Result<(), Error>>
pub async fn sync_all(&self) -> impl Future<Output = Result<(), Error>>
Attempts to sync all OS-internal metadata to disk.
This function will attempt to ensure that all in-core data reaches the filesystem before returning.
Examples
use tokio::fs::File;
use tokio::io::AsyncWriteExt;
let mut file = File::create("foo.txt").await?;
file.write_all(b"hello, world!").await?;
file.sync_all().await?;
The write_all
method is defined on the AsyncWriteExt
trait.
sourcepub async fn sync_data(&self) -> impl Future<Output = Result<(), Error>>
pub async fn sync_data(&self) -> impl Future<Output = Result<(), Error>>
This function is similar to sync_all
, except that it may not
synchronize file metadata to the filesystem.
This is intended for use cases that must synchronize content, but don’t need the metadata on disk. The goal of this method is to reduce disk operations.
Note that some platforms may simply implement this in terms of sync_all
.
Examples
use tokio::fs::File;
use tokio::io::AsyncWriteExt;
let mut file = File::create("foo.txt").await?;
file.write_all(b"hello, world!").await?;
file.sync_data().await?;
The write_all
method is defined on the AsyncWriteExt
trait.
sourcepub async fn set_len(
&self,
size: u64
) -> impl Future<Output = Result<(), Error>>
pub async fn set_len( &self, size: u64 ) -> impl Future<Output = Result<(), Error>>
Truncates or extends the underlying file, updating the size of this file to become size.
If the size is less than the current file’s size, then the file will be shrunk. If it is greater than the current file’s size, then the file will be extended to size and have all of the intermediate data filled in with 0s.
Errors
This function will return an error if the file is not opened for writing.
Examples
use tokio::fs::File;
use tokio::io::AsyncWriteExt;
let mut file = File::create("foo.txt").await?;
file.write_all(b"hello, world!").await?;
file.set_len(10).await?;
The write_all
method is defined on the AsyncWriteExt
trait.
sourcepub async fn metadata(&self) -> impl Future<Output = Result<Metadata, Error>>
pub async fn metadata(&self) -> impl Future<Output = Result<Metadata, Error>>
Queries metadata about the underlying file.
Examples
use tokio::fs::File;
let file = File::open("foo.txt").await?;
let metadata = file.metadata().await?;
println!("{:?}", metadata);
sourcepub async fn try_clone(&self) -> impl Future<Output = Result<File, Error>>
pub async fn try_clone(&self) -> impl Future<Output = Result<File, Error>>
Creates a new File
instance that shares the same underlying file handle
as the existing File
instance. Reads, writes, and seeks will affect both
File instances simultaneously.
Examples
use tokio::fs::File;
let file = File::open("foo.txt").await?;
let file_clone = file.try_clone().await?;
sourcepub async fn set_permissions(
&self,
perm: Permissions
) -> impl Future<Output = Result<(), Error>>
pub async fn set_permissions( &self, perm: Permissions ) -> impl Future<Output = Result<(), Error>>
Changes the permissions on the underlying file.
Platform-specific behavior
This function currently corresponds to the fchmod
function on Unix and
the SetFileInformationByHandle
function on Windows. Note that, this
may change in the future.
Errors
This function will return an error if the user lacks permission change attributes on the underlying file. It may also return an error in other os-specific unspecified cases.
Examples
use tokio::fs::File;
let file = File::open("foo.txt").await?;
let mut perms = file.metadata().await?.permissions();
perms.set_readonly(true);
file.set_permissions(perms).await?;
Trait Implementations§
source§impl<'r> Responder<'r, 'static> for NamedFile
impl<'r> Responder<'r, 'static> for NamedFile
Streams the named file to the client. Sets or overrides the Content-Type in
the response according to the file’s extension if the extension is
recognized. See ContentType::from_extension()
for more information. If
you would like to stream a file with a different Content-Type than that
implied by its extension, use a File
directly.
Auto Trait Implementations§
impl !RefUnwindSafe for NamedFile
impl Send for NamedFile
impl Sync for NamedFile
impl Unpin for NamedFile
impl UnwindSafe for NamedFile
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoCollection<T> for T
impl<T> IntoCollection<T> for T
source§impl<T> Paint for Twhere
T: ?Sized,
impl<T> Paint for Twhere T: ?Sized,
source§fn fg(&self, value: Color) -> Painted<&T>
fn fg(&self, value: Color) -> Painted<&T>
Returns a styled value derived from self
with the foreground set to
value
.
This method should be used rarely. Instead, prefer to use color-specific
builder methods like red()
and
green()
, which have the same functionality but are
pithier.
Example
Set foreground color to white using fg()
:
use yansi::{Paint, Color};
painted.fg(Color::White);
Set foreground color to white using white()
.
use yansi::Paint;
painted.white();
source§fn bright_black(&self) -> Painted<&T>
fn bright_black(&self) -> Painted<&T>
source§fn bright_red(&self) -> Painted<&T>
fn bright_red(&self) -> Painted<&T>
source§fn bright_green(&self) -> Painted<&T>
fn bright_green(&self) -> Painted<&T>
source§fn bright_yellow(&self) -> Painted<&T>
fn bright_yellow(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightYellow
.
Example
println!("{}", value.bright_yellow());
source§fn bright_blue(&self) -> Painted<&T>
fn bright_blue(&self) -> Painted<&T>
source§fn bright_magenta(&self) -> Painted<&T>
fn bright_magenta(&self) -> Painted<&T>
Returns self
with the
fg()
set to
Color::BrightMagenta
.
Example
println!("{}", value.bright_magenta());
source§fn bright_cyan(&self) -> Painted<&T>
fn bright_cyan(&self) -> Painted<&T>
source§fn bright_white(&self) -> Painted<&T>
fn bright_white(&self) -> Painted<&T>
source§fn bg(&self, value: Color) -> Painted<&T>
fn bg(&self, value: Color) -> Painted<&T>
Returns a styled value derived from self
with the background set to
value
.
This method should be used rarely. Instead, prefer to use color-specific
builder methods like on_red()
and
on_green()
, which have the same functionality but
are pithier.
Example
Set background color to red using fg()
:
use yansi::{Paint, Color};
painted.bg(Color::Red);
Set background color to red using on_red()
.
use yansi::Paint;
painted.on_red();
source§fn on_primary(&self) -> Painted<&T>
fn on_primary(&self) -> Painted<&T>
source§fn on_magenta(&self) -> Painted<&T>
fn on_magenta(&self) -> Painted<&T>
source§fn on_bright_black(&self) -> Painted<&T>
fn on_bright_black(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightBlack
.
Example
println!("{}", value.on_bright_black());
source§fn on_bright_red(&self) -> Painted<&T>
fn on_bright_red(&self) -> Painted<&T>
source§fn on_bright_green(&self) -> Painted<&T>
fn on_bright_green(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightGreen
.
Example
println!("{}", value.on_bright_green());
source§fn on_bright_yellow(&self) -> Painted<&T>
fn on_bright_yellow(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightYellow
.
Example
println!("{}", value.on_bright_yellow());
source§fn on_bright_blue(&self) -> Painted<&T>
fn on_bright_blue(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightBlue
.
Example
println!("{}", value.on_bright_blue());
source§fn on_bright_magenta(&self) -> Painted<&T>
fn on_bright_magenta(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightMagenta
.
Example
println!("{}", value.on_bright_magenta());
source§fn on_bright_cyan(&self) -> Painted<&T>
fn on_bright_cyan(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightCyan
.
Example
println!("{}", value.on_bright_cyan());
source§fn on_bright_white(&self) -> Painted<&T>
fn on_bright_white(&self) -> Painted<&T>
Returns self
with the
bg()
set to
Color::BrightWhite
.
Example
println!("{}", value.on_bright_white());
source§fn attr(&self, value: Attribute) -> Painted<&T>
fn attr(&self, value: Attribute) -> Painted<&T>
Enables the styling Attribute
value
.
This method should be used rarely. Instead, prefer to use
attribute-specific builder methods like bold()
and
underline()
, which have the same functionality
but are pithier.
Example
Make text bold using attr()
:
use yansi::{Paint, Attribute};
painted.attr(Attribute::Bold);
Make text bold using using bold()
.
use yansi::Paint;
painted.bold();
source§fn underline(&self) -> Painted<&T>
fn underline(&self) -> Painted<&T>
Returns self
with the
attr()
set to
Attribute::Underline
.
Example
println!("{}", value.underline());
source§fn rapid_blink(&self) -> Painted<&T>
fn rapid_blink(&self) -> Painted<&T>
Returns self
with the
attr()
set to
Attribute::RapidBlink
.
Example
println!("{}", value.rapid_blink());
source§fn quirk(&self, value: Quirk) -> Painted<&T>
fn quirk(&self, value: Quirk) -> Painted<&T>
Enables the yansi
Quirk
value
.
This method should be used rarely. Instead, prefer to use quirk-specific
builder methods like mask()
and
wrap()
, which have the same functionality but are
pithier.
Example
Enable wrapping using .quirk()
:
use yansi::{Paint, Quirk};
painted.quirk(Quirk::Wrap);
Enable wrapping using wrap()
.
use yansi::Paint;
painted.wrap();
source§fn whenever(&self, value: Condition) -> Painted<&T>
fn whenever(&self, value: Condition) -> Painted<&T>
Conditionally enable styling based on whether the Condition
value
applies. Replaces any previous condition.
See the crate level docs for more details.
Example
Enable styling painted
only when both stdout
and stderr
are TTYs:
use yansi::{Paint, Condition};
painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);