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mat ess 2023-04-17 18:22:35 -04:00
commit 3c0df12b50
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1
.envrc Normal file
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use flake

11
.gitignore vendored Normal file
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/.direnv
/result
/target
/.pre-commit-config.yaml
# Added by cargo
#
# already existing elements were commented out
#/target

25
Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "cover"
version = "0.1.0"
dependencies = [
"nanoserde",
]
[[package]]
name = "nanoserde"
version = "0.1.32"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "755e7965536bc54d7c9fba2df5ada5bf835b0443fd613f0a53fa199a301839d3"
dependencies = [
"nanoserde-derive",
]
[[package]]
name = "nanoserde-derive"
version = "0.1.19"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed7a94da6c6181c35d043fc61c43ac96d3a5d739e7b8027f77650ba41504d6ab"

9
Cargo.toml Normal file
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[package]
name = "cover"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
nanoserde = "0.1.32"

237
flake.lock Normal file
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{
"nodes": {
"crane": {
"inputs": {
"flake-compat": "flake-compat",
"flake-utils": "flake-utils",
"nixpkgs": [
"nixpkgs"
],
"rust-overlay": "rust-overlay"
},
"locked": {
"lastModified": 1681680516,
"narHash": "sha256-EB8Adaeg4zgcYDJn9sR6UMjN/OHdIiMMK19+3LmmXQY=",
"owner": "ipetkov",
"repo": "crane",
"rev": "54b63c8eae4c50172cb50b612946ff1d2bc1c75c",
"type": "github"
},
"original": {
"owner": "ipetkov",
"repo": "crane",
"type": "github"
}
},
"flake-compat": {
"flake": false,
"locked": {
"lastModified": 1673956053,
"narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
"owner": "edolstra",
"repo": "flake-compat",
"rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
"type": "github"
},
"original": {
"owner": "edolstra",
"repo": "flake-compat",
"type": "github"
}
},
"flake-compat_2": {
"flake": false,
"locked": {
"lastModified": 1673956053,
"narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
"owner": "edolstra",
"repo": "flake-compat",
"rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
"type": "github"
},
"original": {
"owner": "edolstra",
"repo": "flake-compat",
"type": "github"
}
},
"flake-parts": {
"inputs": {
"nixpkgs-lib": "nixpkgs-lib"
},
"locked": {
"lastModified": 1680392223,
"narHash": "sha256-n3g7QFr85lDODKt250rkZj2IFS3i4/8HBU2yKHO3tqw=",
"owner": "hercules-ci",
"repo": "flake-parts",
"rev": "dcc36e45d054d7bb554c9cdab69093debd91a0b5",
"type": "github"
},
"original": {
"owner": "hercules-ci",
"repo": "flake-parts",
"type": "github"
}
},
"flake-utils": {
"locked": {
"lastModified": 1678901627,
"narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"flake-utils_2": {
"locked": {
"lastModified": 1667395993,
"narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"gitignore": {
"inputs": {
"nixpkgs": [
"pre-commit",
"nixpkgs"
]
},
"locked": {
"lastModified": 1660459072,
"narHash": "sha256-8DFJjXG8zqoONA1vXtgeKXy68KdJL5UaXR8NtVMUbx8=",
"owner": "hercules-ci",
"repo": "gitignore.nix",
"rev": "a20de23b925fd8264fd7fad6454652e142fd7f73",
"type": "github"
},
"original": {
"owner": "hercules-ci",
"repo": "gitignore.nix",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1681648924,
"narHash": "sha256-pzi3HISK8+7mpEtv08Yr80wswyHKsz+RP1CROG1Qf6s=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "f294325aed382b66c7a188482101b0f336d1d7db",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs-lib": {
"locked": {
"dir": "lib",
"lastModified": 1680213900,
"narHash": "sha256-cIDr5WZIj3EkKyCgj/6j3HBH4Jj1W296z7HTcWj1aMA=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "e3652e0735fbec227f342712f180f4f21f0594f2",
"type": "github"
},
"original": {
"dir": "lib",
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs-stable": {
"locked": {
"lastModified": 1678872516,
"narHash": "sha256-/E1YwtMtFAu2KUQKV/1+KFuReYPANM2Rzehk84VxVoc=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "9b8e5abb18324c7fe9f07cb100c3cd4a29cda8b8",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-22.11",
"repo": "nixpkgs",
"type": "github"
}
},
"pre-commit": {
"inputs": {
"flake-compat": "flake-compat_2",
"flake-utils": "flake-utils_2",
"gitignore": "gitignore",
"nixpkgs": [
"nixpkgs"
],
"nixpkgs-stable": "nixpkgs-stable"
},
"locked": {
"lastModified": 1681413034,
"narHash": "sha256-/t7OjNQcNkeWeSq/CFLYVBfm+IEnkjoSm9iKvArnUUI=",
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"rev": "d3de8f69ca88fb6f8b09e5b598be5ac98d28ede5",
"type": "github"
},
"original": {
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"type": "github"
}
},
"root": {
"inputs": {
"crane": "crane",
"flake-parts": "flake-parts",
"nixpkgs": "nixpkgs",
"pre-commit": "pre-commit"
}
},
"rust-overlay": {
"inputs": {
"flake-utils": [
"crane",
"flake-utils"
],
"nixpkgs": [
"crane",
"nixpkgs"
]
},
"locked": {
"lastModified": 1680488274,
"narHash": "sha256-0vYMrZDdokVmPQQXtFpnqA2wEgCCUXf5a3dDuDVshn0=",
"owner": "oxalica",
"repo": "rust-overlay",
"rev": "7ec2ff598a172c6e8584457167575b3a1a5d80d8",
"type": "github"
},
"original": {
"owner": "oxalica",
"repo": "rust-overlay",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

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flake.nix Normal file
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{
description = "FILL-ME-IN";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-parts.url = "github:hercules-ci/flake-parts";
crane.url = "github:ipetkov/crane";
crane.inputs.nixpkgs.follows = "nixpkgs";
pre-commit.url = "github:cachix/pre-commit-hooks.nix";
pre-commit.inputs.nixpkgs.follows = "nixpkgs";
};
outputs = inputs@{ self, flake-parts, crane, pre-commit, ... }:
flake-parts.lib.mkFlake { inherit inputs; } {
imports = [ pre-commit.flakeModule ];
systems = [
"aarch64-darwin"
"aarch64-linux"
"x86_64-darwin"
"x86_64-linux"
];
perSystem = { config, pkgs, system, ... }:
let
crane-lib = crane.lib.${system};
package = crane-lib.buildPackage {
src = crane-lib.cleanCargoSource ./.;
nativeBuildInputs = pkgs.lib.optionals pkgs.stdenv.isDarwin [ pkgs.libiconv ];
};
in
{
pre-commit.settings.hooks = {
rustfmt.enable = true;
clippy.enable = true;
cargo-check.enable = true;
};
checks = { inherit package; };
packages.default = package;
devShells.default = pkgs.mkShell {
shellHook = ''
${config.pre-commit.installationScript}
echo "welcome to your rust project ミ(・・)ミ" 1>&2
'';
inputsFrom = builtins.attrValues self.checks;
RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
nativeBuildInputs = builtins.attrValues ({
inherit (pkgs)
cargo
rustc
;
} // pkgs.lib.optionalAttrs pkgs.stdenv.isDarwin {
inherit (pkgs) libiconv;
inherit (pkgs.darwin.apple_sdk.frameworks) Security;
});
buildInputs = builtins.attrValues {
inherit (pkgs)
rust-analyzer
# rustfmt
clippy
;
rustfmt = pkgs.rustfmt.overrideAttrs (old: {
preFixup = pkgs.lib.optionalString pkgs.stdenv.isDarwin ''
install_name_tool -add_rpath "${pkgs.rustc}/lib" "$out/bin/rustfmt"
'';
});
};
};
};
};
}

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library.json Normal file
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{
"Taylor Swift": [
{
"title": "Love Story",
"composer": "Taylor Swift",
"performer": "Taylor Swift"
}
],
"black midi": [
{
"title": "Love Story",
"composer": "Taylor Swift",
"performer": "black midi"
},
{
"title": "Love Story",
"composer": "black midi",
"performer": "black midi"
}
]
}

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src/main.rs Normal file
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use nanoserde::DeJson;
use std::{
collections::{HashMap, HashSet},
env, fs,
hash::Hash,
};
fn main() {
let file_path = env::args()
.nth(1)
.expect("Usage: cover path/to/library.json");
let data = fs::read_to_string(file_path).expect("Failed to open library file");
let json: HashMap<String, Vec<Song>> =
DeJson::deserialize_json(&data).expect("Failed to deserialize library");
let library = Library::new(json);
for cover in library.find_covers() {
println!("Found cover!");
println!(
"{}, by {}, covered by {}",
cover.title, cover.composer, cover.performer
)
}
}
#[derive(Debug, Clone)]
struct Library {
artists: HashSet<Artist>,
}
impl Library {
fn new(json: HashMap<String, Vec<Song>>) -> Self {
let artists = json
.into_iter()
.map(|(name, catalog)| Artist {
name,
catalog: catalog.into_iter().collect(),
})
.collect();
Library { artists }
}
}
impl Library {
fn find_covers(&self) -> HashSet<&Song> {
let names = self
.artists
.iter()
.map(|artist| artist.name.clone())
.collect::<HashSet<_>>();
self.artists
.iter()
.fold(HashSet::new(), |mut covers, artist| {
covers.extend(artist.covered_songs());
covers
})
.into_iter()
.filter(|song| names.contains(&song.composer))
.collect()
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
struct Artist {
name: String,
catalog: HashSet<Song>,
}
impl Hash for Artist {
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
self.name.hash(state);
}
}
impl Artist {
fn covered_songs(&self) -> HashSet<&Song> {
self.catalog
.iter()
.filter(|song| song.composer != self.name)
.collect()
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash, DeJson)]
struct Song {
title: String,
performer: String,
composer: String,
}