adac903818
Using `impl AsRef<str>` as the argument instead of `&str` makes it possible to call the function with `&str`, `String` and other types that implement `AsRef` trait. The cost of it is that compiled binary contains mulitple versions of the same function, one for each variant of types. If function contains multiple generic `impl AsRef` arguments, the number of versions possibly compiled into binary grows exponentially with the number of arguments. Simple way to avoid it is to call `.as_ref()` on the caller side to convert the argument to `&str`. In most cases even adding a `&` and relying on `Deref` coercion is sufficient. This patch changes many functions that accepted `impl AsRef<str>` and `impl AsRef<Path>` to accept `&str` and `&Path` instead. In some places `.clone()` calls are removed. Calling `.clone()` on `String` and passing `String` to a function accepting `impl AsRef<str>` is completely unnecessary as `&str` reference could be passed instead. There is no clippy warning against it yet, but changing argument type to `&str` allowed to find these cases. The result of debloating is not impressive, several hundred kilobytes are saved, which is about 3% of the `.so` binary, but the code is cleaner too.
Delta Chat Rust
Deltachat-core written in Rust
Installing Rust and Cargo
To download and install the official compiler for the Rust programming language, and the Cargo package manager, run the command in your user environment:
$ curl https://sh.rustup.rs -sSf | sh
Using the CLI client
Compile and run Delta Chat Core command line utility, using cargo:
$ RUST_LOG=repl=info cargo run --example repl --features repl -- ~/deltachat-db
where ~/deltachat-db is the database file. Delta Chat will create it if it does not exist.
Configure your account (if not already configured):
Delta Chat Core is awaiting your commands.
> set addr your@email.org
> set mail_pw yourpassword
> configure
Connect to your mail server (if already configured):
> connect
Create a contact:
> addcontact yourfriends@email.org
Command executed successfully.
List contacts:
> listcontacts
Contact#10: <name unset> <yourfriends@email.org>
Contact#1: Me √√ <your@email.org>
Create a chat with your friend and send a message:
> createchat 10
Single#10 created successfully.
> chat 10
Single#10: yourfriends@email.org [yourfriends@email.org]
> send hi
Message sent.
If yourfriend@email.org uses DeltaChat, but does not receive message just
sent, it is advisable to check Spam folder. It is known that at least
gmx.com treat such test messages as spam, unless told otherwise with web
interface.
List messages when inside a chat:
> chat
For more commands type:
> help
Development
# run tests
$ cargo test --all
# build c-ffi
$ cargo build -p deltachat_ffi --release
Debugging environment variables
-
DCC_IMAP_DEBUG: if set IMAP protocol commands and responses will be printed -
DCC_MIME_DEBUG: if set outgoing and incoming message will be printed -
RUST_LOG=repl=info,async_imap=trace,async_smtp=trace: enable IMAP and SMTP tracing in addition to info messages.
Expensive tests
Some tests are expensive and marked with #[ignore], to run these
use the --ignored argument to the test binary (not to cargo itself):
$ cargo test -- --ignored
Features
vendored: When using Openssl for TLS, this bundles a vendored version.nightly: Enable nightly only performance and security related features.
Language bindings and frontend projects
Language bindings are available for:
- C
- Node.js
- Python
- Go
- Free Pascal
- Java and Swift (contained in the Android/iOS repos)
The following "frontend" projects make use of the Rust-library or its language bindings: