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Implement random in-crate, remove all dependencies

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This commit is contained in:
Nathan Fisher 2023-08-23 15:57:53 -04:00
parent e021671403
commit abc9af02de
4 changed files with 11 additions and 79 deletions
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1
.gitignore vendored
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@ -1 +1,2 @@
/target /target
*.core

68
Cargo.lock generated
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@ -2,74 +2,6 @@
# It is not intended for manual editing. # It is not intended for manual editing.
version = 3 version = 3
[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "getrandom"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c05aeb6a22b8f62540c194aac980f2115af067bfe15a0734d7277a768d396b31"
dependencies = [
"cfg-if",
"libc",
"wasi",
]
[[package]]
name = "libc"
version = "0.2.140"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
[[package]] [[package]]
name = "liff" name = "liff"
version = "1.0.0" version = "1.0.0"
dependencies = [
"rand",
]
[[package]]
name = "ppv-lite86"
version = "0.2.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
[[package]]
name = "rand"
version = "0.8.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
dependencies = [
"libc",
"rand_chacha",
"rand_core",
]
[[package]]
name = "rand_chacha"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
dependencies = [
"ppv-lite86",
"rand_core",
]
[[package]]
name = "rand_core"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
dependencies = [
"getrandom",
]
[[package]]
name = "wasi"
version = "0.11.0+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

1
Cargo.toml
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@ -10,7 +10,6 @@ path = "src/main.rs"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies] [dependencies]
rand = "0.8"
[profile.release] [profile.release]
codegen-units = 1 codegen-units = 1

20
src/main.rs
View file

@ -1,11 +1,8 @@
use { use std::{
rand::Rng, env,
std::{ fs::{self, DirEntry, File},
env, io::{self, Read, Write},
fs::{self, DirEntry}, path::PathBuf,
io::{self, Write},
path::PathBuf,
},
}; };
fn get_datadirs() -> Vec<PathBuf> { fn get_datadirs() -> Vec<PathBuf> {
@ -57,8 +54,11 @@ fn get_files() -> Vec<PathBuf> {
fn main() -> Result<(), io::Error> { fn main() -> Result<(), io::Error> {
let files = get_files(); let files = get_files();
let len = files.len(); let len = files.len();
let mut rng = rand::thread_rng(); let mut buf = [0; 4];
let idx = rng.gen_range(0..len); let mut fd = File::open("/dev/urandom")?;
fd.read_exact(&mut buf)?;
let idx = u32::from_ne_bytes(buf);
let idx: usize = usize::try_from(idx).unwrap() % len;
if let Some(path) = files.get(idx) { if let Some(path) = files.get(idx) {
let contents = fs::read(path)?; let contents = fs::read(path)?;
io::stdout().write_all(&contents)?; io::stdout().write_all(&contents)?;