[][src]Struct sequoia_openpgp::serialize::stream::Message

pub struct Message<'a>(_);

Streams an OpenPGP message.

Wraps an io::Writer for use with the streaming subsystem. The Message is a stack of filters that create the desired message structure. Literal data must be framed using the LiteralWriter filter. Once all the has been written, the Message must be finalized using Message::finalize.

Implementations

impl<'a> Message<'a>[src]

pub fn new<W: 'a + Write>(w: W) -> Message<'a>[src]

Starts streaming an OpenPGP message.

Examples

use sequoia_openpgp as openpgp;
use openpgp::serialize::stream::{Message, LiteralWriter};

let message = Message::new(&mut sink);
// Construct the writer stack here.
let mut message = LiteralWriter::new(message).build()?;
// Write literal data to `message` here.
// ...
// Finalize the message.
message.finalize()?;

pub fn finalize_one(self) -> Result<Option<Message<'a>>>[src]

Finalizes the topmost writer, returning the underlying writer.

Finalizes the topmost writer, i.e. flushes any buffered data, and pops it of the stack. This allows for fine-grained control of the resulting message, but must be done with great care. If done improperly, the resulting message may be malformed.

Examples

This demonstrates how to create a compressed, signed message from a detached signature.

use std::io::Write;
use std::convert::TryFrom;
use sequoia_openpgp as openpgp;
use openpgp::packet::{Packet, Signature, one_pass_sig::OnePassSig3};
use openpgp::serialize::Serialize;
use openpgp::serialize::stream::{Message, Compressor, LiteralWriter};

let data: &[u8] = // ...
let sig: Signature = // ...

let message = Message::new(&mut sink);
let mut message = Compressor::new(message).build()?;

// First, write a one-pass-signature packet.
Packet::from(OnePassSig3::try_from(&sig)?)
    .serialize(&mut message)?;

// Then, add the literal data.
let mut message = LiteralWriter::new(message).build()?;
message.write_all(data)?;

// Finally, pop the `LiteralWriter` off the stack to write the
// signature.
let mut message = message.finalize_one()?.unwrap();
Packet::from(sig).serialize(&mut message)?;

// Finalize the message.
message.finalize()?;

pub fn finalize(self) -> Result<()>[src]

Finalizes the message.

Finalizes all writers on the stack, flushing any buffered data.

Note

Failing to finalize the message may result in corrupted messages.

Examples

use sequoia_openpgp as openpgp;
use openpgp::serialize::stream::{Message, LiteralWriter};

let message = Message::new(&mut sink);
// Construct the writer stack here.
let mut message = LiteralWriter::new(message).build()?;
// Write literal data to `message` here.
// ...
// Finalize the message.
message.finalize()?;

Trait Implementations

impl<'a> Debug for Message<'a>[src]

impl<'a> From<&'a mut (dyn Write + 'a)> for Message<'a>[src]

impl<'a> From<Message<'a>> for Box<dyn Stackable<'a, Cookie> + 'a>[src]

impl<'a> Write for Message<'a>[src]

Auto Trait Implementations

impl<'a> !RefUnwindSafe for Message<'a>

impl<'a> !Send for Message<'a>

impl<'a> !Sync for Message<'a>

impl<'a> Unpin for Message<'a>

impl<'a> !UnwindSafe for Message<'a>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.