Struct holochain::prelude::kitsune_p2p::dependencies::kitsune_p2p_types::dependencies::lair_keystore_api::dependencies::base64::write::EncoderStringWriter
source · pub struct EncoderStringWriter<S>where
S: StrConsumer,{ /* private fields */ }
Expand description
A Write
implementation that base64-encodes data using the provided config and accumulates the
resulting base64 in memory, which is then exposed as a String via into_inner()
.
Examples
Buffer base64 in a new String:
use std::io::Write;
let mut enc = base64::write::EncoderStringWriter::new(base64::STANDARD);
enc.write_all(b"asdf").unwrap();
// get the resulting String
let b64_string = enc.into_inner();
assert_eq!("YXNkZg==", &b64_string);
Or, append to an existing String:
use std::io::Write;
let mut buf = String::from("base64: ");
let mut enc = base64::write::EncoderStringWriter::from(&mut buf, base64::STANDARD);
enc.write_all(b"asdf").unwrap();
// release the &mut reference on buf
let _ = enc.into_inner();
assert_eq!("base64: YXNkZg==", &buf);
Panics
Calling write()
(or related methods) or finish()
after finish()
has completed without
error is invalid and will panic.
Performance
Because it has to validate that the base64 is UTF-8, it is about 80% as fast as writing plain
bytes to a io::Write
.
Implementations§
source§impl<S> EncoderStringWriter<S>where
S: StrConsumer,
impl<S> EncoderStringWriter<S>where S: StrConsumer,
sourcepub fn from(str_consumer: S, config: Config) -> EncoderStringWriter<S> ⓘ
pub fn from(str_consumer: S, config: Config) -> EncoderStringWriter<S> ⓘ
Create a EncoderStringWriter that will append to the provided StrConsumer
.
sourcepub fn into_inner(self) -> S
pub fn into_inner(self) -> S
Encode all remaining buffered data, including any trailing incomplete input triples and associated padding.
Once this succeeds, no further writes or calls to this method are allowed.
Returns the base64-encoded form of the accumulated written data.
Trait Implementations§
source§impl<S> Write for EncoderStringWriter<S>where
S: StrConsumer,
impl<S> Write for EncoderStringWriter<S>where S: StrConsumer,
source§fn write(&mut self, buf: &[u8]) -> Result<usize, Error>
fn write(&mut self, buf: &[u8]) -> Result<usize, Error>
source§fn flush(&mut self) -> Result<(), Error>
fn flush(&mut self) -> Result<(), Error>
source§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
can_vector
)1.0.0 · source§fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
source§fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
write_all_vectored
)Auto Trait Implementations§
impl<S> RefUnwindSafe for EncoderStringWriter<S>where S: RefUnwindSafe,
impl<S> Send for EncoderStringWriter<S>where S: Send,
impl<S> Sync for EncoderStringWriter<S>where S: Sync,
impl<S> Unpin for EncoderStringWriter<S>where S: Unpin,
impl<S> UnwindSafe for EncoderStringWriter<S>where S: UnwindSafe,
Blanket Implementations§
§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata
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
§impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,
impl<F, W, T, D> Deserialize<With<T, W>, D> for Fwhere W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,
§fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>
fn deserialize( &self, deserializer: &mut D ) -> Result<With<T, W>, <D as Fallible>::Error>
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> 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> ⓘ
§impl<T> Pointable for T
impl<T> Pointable for T
§impl<SS, SP> SupersetOf<SS> for SPwhere
SS: SubsetOf<SP>,
impl<SS, SP> SupersetOf<SS> for SPwhere SS: SubsetOf<SP>,
§fn to_subset(&self) -> Option<SS>
fn to_subset(&self) -> Option<SS>
self
from the equivalent element of its
superset. Read more§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
self
is actually part of its subset T
(and can be converted to it).§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
self.to_subset
but without any property checks. Always succeeds.§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
self
to the equivalent element of its superset.