#string #connection #parser #net #wasm #jdbc


Connection string parsing in Rust (and WebAssembly)

16 releases

0.2.0 Mar 31, 2023
0.1.14 Feb 4, 2022
0.1.13 Feb 10, 2021
0.1.12 Jan 25, 2021
0.1.10 Oct 27, 2020

#2 in #net

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Used in 51 crates (2 directly)


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ADO.net and JDBC connection string parsing in Rust and JavaScript

Installation for Rust

$ cargo add connection-string

Usage for JavaScript

The crate is available in npm as @pimeys/connection-string. Usage patters try to follow the Rust version as close as possible. Please see the Rust docs for more information.


const j = new JdbcString("jdbc:sqlserver://localhost\\INSTANCE:1433;database=master;user=SA;password={my_password;123}");

console.log(j.server_name()); // "localhost"
console.log(j.port()); // 1433
console.log(j.instance_name()); // "INSTANCE"
console.log(j.get("database")); // "master"
console.log(j.get("password")); // "my_password;123" (see escaping)
console.log(j.keys()); // ["database", "user", "password"]
console.log(j.set("password", "a;;new;;password")); // "my_password;123" (returns the old value, if available)

// "jdbc:sqlserver://localhost\INSTANCE:1433;user=SA;database=master;password=a{;;}new{;;}password"


const a = new AdoNetString("server=tcp:localhost,1433;user=SA;password=a{;;}new{;;}password");

console.log(a.get("password")); // a;;new;;password
console.log(a.set("user", "john")); // "SA" (returns the old value, if available)

// "server=tcp:localhost,1433;user=john;password=a{;;}new{;;}password"


This crate uses #![deny(unsafe_code)] to ensure everything is implemented in 100% Safe Rust.


Want to join us? Check out our "Contributing" guide and take a look at some of these issues:


The build procedure and dependencies are defined in the provided flake.nix file. Please install the unstable Nix with flakes support (Linux, macOS).

The WASM module can be built with:

nix build

This creates a link result to the current directory, containing a NodeJS package with the Rust code compiled as WASM bytecode.


Run the tests with the nix subcommand:

nix run .#test


The updatePackageVersion command changes the package version to the Rust Cargo.toml and JavaScript package.json at the same time:

nix run .#updatePackageVersion 0.1.14

Don't forget to add the tag before publishing the library:

git tag v0.1.14

The publishing can be done separately or together with the publish command:

nix run .#publishRust
nix run .#publishJavascript


nix run .#publish

Please be sure you have the corresponding publishing rights in crates and npmjs.


Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

No runtime deps