APT Parser

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apt-parser is a library for parsing APT list files.
An APT repository normally consists of a Release file, Packages file, and compressed binary packages.
The library is able to parse these files and return them as serde serialized structs.

Installation

Make sure you have a modern version of Rust (1.56+) using rustup.
Then, add the following to your Cargo.toml:

[dependencies]
# You can also use the latest version
apt-parser = "1.0.0"

Release Parsing

Release files are the main entry point for an APT repository.
The Release struct has strict types for all documented fields in the Release file.
If you need to access a field that isn't defined, you can use the get method.
Here's a simple example:

use apt_parser::Release;
use surf::get;

let data = get("http://archive.ubuntu.com/ubuntu/dists/jammy/Release")
    .await?
    .body_string()
    .await?;

let release = match Release::from(data) {
    Ok(release) => release,
    Err(err) => panic!("Failed to parse Release file: {}", err),
}

assert_eq!(release.origin, "Ubuntu");
assert_eq!(release.version, "22.04");
assert_eq!(release.get("InvalidKey"), None);

struct Release {
    architectures: Vec<String>, // => Architectures
    no_support_for_architecture_all: Option<bool>, // => No-Support-For-Architecture-All
    description: Option<String>, // => Description
    origin: Option<String>, // => Origin
    label: Option<String>, // => Label
    suite: Option<String>, // => Suite
    version: Option<String>, // => Version
    codename: Option<String>, // => Codename
    date: Option<String>, // => Date
    valid_until: Option<String>, // => Valid-Until
    components: Vec<String>, // => Components
    md5sum: Option<Vec<ReleaseHash>>, // => MD5Sum
    sha1sum: Option<Vec<ReleaseHash>>, // => SHA1
    sha256sum: Option<Vec<ReleaseHash>>, // => SHA256
    sha512sum: Option<Vec<ReleaseHash>>, // => SHA512
    not_automatic: Option<bool>, // => NotAutomatic
    but_automatic_upgrades: Option<bool>, // => ButAutomaticUpgrades
    acquire_by_hash: Option<bool>, // => Acquire-By-Hash
    signed_by: Option<String>, // => Signed-By
    packages_require_authorization: Option<bool>, // => Packages-Require-Authorization

    fn from(data: &str) -> Result<Self, APTError>; // => Parse a Release file
    fn get(&self, key: &str) -> Option<&str>; // => Retrieve a raw field value
}

// A struct for holding the hash information for a Release file
struct ReleaseHash {
    filename: String,
    hash: String,
    size: u64,
}

Control File Parsing

Control files are used to describe the contents of a binary package.
The Control struct has strict types for all documented fields in the control file.
If you need to access a field that isn't defined, you can use the get method.
Here's a simple example:

use apt_parser::Control;

let data = "
Package: com.amywhile.signalreborn
Architecture: iphoneos-arm
Description: Visualise your nearby cell towers
Depends: firmware (>= 12.2) | org.swift.libswift
Maintainer: Amy While <support@anamy.gay>
Section: Applications
Version: 2.2.1-2
Installed-Size: 1536
Custom-Key: cool-value
";

let control = match Control::from(data) {
    Ok(control) => control,
    Err(err) => panic!("Failed to parse Control file: {}", err),
}

assert_eq!(control.version, "2.2.1-2");
assert_eq!(control.package, "com.amywhile.signalreborn");
assert_eq!(control.get("Custom-Key"), Some("cool-value"));
assert_eq!(control.get("Invalid-Key"), None);

struct Control {
    package: String, // => Package
    source: Option<String>, // => Source
    version: String, // => Version
    section: Option<String>, // => Section
    priority: Option<String>, // => Priority
    architecture: String, // => Architecture
    is_essential: Option<bool>, // => Essential
    depends: Option<Vec<String>>, // => Depends
    pre_depends: Option<Vec<String>>, // => Pre-Depends
    recommends: Option<Vec<String>>, // => Recommends
    suggests: Option<Vec<String>>, // => Suggests
    replaces: Option<Vec<String>>, // => Replaces
    enhances: Option<Vec<String>>, // => Enhances
    breaks: Option<Vec<String>>, // => Breaks
    conflicts: Option<Vec<String>>, // => Conflicts
    installed_size: Option<i64>, // => Installed-Size
    maintainer: Option<String>, // => Maintainer
    description: Option<String>, // => Description
    homepage: Option<String>, // => Homepage
    built_using: Option<String>, // => Built-Using
    package_type: Option<String>, // => Package-Type
    tags: Option<Vec<String>>, // => Tags

    fn from(data: &str) -> Result<Self, APTError>; // => Parse a Control file
    fn get(&self, key: &str) -> Option<&str>; // => Retrieve a raw field value
}

Packages Parsing

Packages files are used to describe the contents of a repository.
The Packages struct implements an iterator and has methods for accessing the packages.
The Package struct has strict types for all documented fields in the Packages file.
If you need to access a field that isn't defined, you can use the get method.
Here's a simple example:

use apt_parser::Packages;
use surf::get;

let data = get("https://repo.chariz.com/Packages")
    .await?
    .body_string()
    .await?;

let packages = match Packages::from(&data) {
    Ok(packages) => packages,
    Err(err) => panic!("Failed to parse Packages file: {}", err),
}

assert_eq!(packages.len(), 419);

for package in packages {
    println!("{}: {}", package.package, package.version);
}

struct Packages {
    packages: Vec<Package>,

    fn from(data: &str) -> Result<Self, APTError>; // => Parse a Packages file
    fn len(&self) -> usize; // => Get the number of packages
}

impl Iterator for Packages;
impl Index for Packages;

struct Package {
    package: String, // => Package
    source: Option<String>, // => Source
    version: String, // => Version
    section: Option<String>, // => Section
    priority: Option<String>, // => Priority
    architecture: String, // => Architecture
    is_essential: Option<bool>, // => Essential
    depends: Option<Vec<String>>, // => Depends
    pre_depends: Option<Vec<String>>, // => Pre-Depends
    recommends: Option<Vec<String>>, // => Recommends
    suggests: Option<Vec<String>>, // => Suggests
    replaces: Option<Vec<String>>, // => Replaces
    enhances: Option<Vec<String>>, // => Enhances
    breaks: Option<Vec<String>>, // => Breaks
    conflicts: Option<Vec<String>>, // => Conflicts
    installed_size: Option<i64>, // => Installed-Size
    maintainer: Option<String>, // => Maintainer
    description: Option<String>, // => Description
    homepage: Option<String>, // => Homepage
    built_using: Option<String>, // => Built-Using
    package_type: Option<String>, // => Package-Type
    tags: Option<Vec<String>>, // => Tags
    filename: String, // => Filename
    size: i64, // => Size
    md5sum: Option<String>, // => MD5sum
    sha1sum: Option<String>, // => SHA1
    sha256sum: Option<String>, // => SHA256
    sha512sum: Option<String>, // => SHA512
    description_md5sum: Option<String>, // => Description-md5

    fn get(&self, key: &str) -> Option<&str>; // => Retrieve a raw field value
}

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