initial commit
This commit is contained in:
commit
3d032fee4b
4 changed files with 422 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
|
|||
/target
|
||||
290
Cargo.lock
generated
Normal file
290
Cargo.lock
generated
Normal file
|
|
@ -0,0 +1,290 @@
|
|||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
version = 3
|
||||
|
||||
[[package]]
|
||||
name = "anstream"
|
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|
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|
||||
checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
|
||||
dependencies = [
|
||||
"anstyle",
|
||||
"anstyle-parse",
|
||||
"anstyle-query",
|
||||
"anstyle-wincon",
|
||||
"colorchoice",
|
||||
"is_terminal_polyfill",
|
||||
"utf8parse",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "anstyle"
|
||||
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|
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|
||||
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|
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|
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|
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|
||||
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|
||||
"utf8parse",
|
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|
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|
||||
[[package]]
|
||||
name = "anstyle-query"
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|
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|
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|
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|
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|
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[[package]]
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|
||||
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|
||||
"anstyle",
|
||||
"windows-sys",
|
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|
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|
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|
||||
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|
||||
"clap_builder",
|
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"clap_derive",
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||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clap_builder"
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||||
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|
||||
dependencies = [
|
||||
"anstream",
|
||||
"anstyle",
|
||||
"clap_lex",
|
||||
"strsim",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clap_derive"
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||||
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|
||||
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|
||||
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|
||||
dependencies = [
|
||||
"heck",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clap_lex"
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||||
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[[package]]
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||||
name = "colorchoice"
|
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
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||||
|
||||
[[package]]
|
||||
name = "heck"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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[[package]]
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[[package]]
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[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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"hermit-abi",
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"libc",
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]
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[[package]]
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[[package]]
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"proc-macro2",
|
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[[package]]
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name = "read-time"
|
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|
||||
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||||
"clap",
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||||
"clap-stdin",
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"num_cpus",
|
||||
]
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||||
|
||||
[[package]]
|
||||
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[[package]]
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dependencies = [
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"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
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]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
||||
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|
||||
"thiserror-impl",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror-impl"
|
||||
version = "1.0.69"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
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|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "utf8parse"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
|
||||
|
||||
[[package]]
|
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name = "windows-sys"
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|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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|
||||
dependencies = [
|
||||
"windows-targets",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_gnullvm",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
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version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
|
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|
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[[package]]
|
||||
name = "windows_i686_msvc"
|
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version = "0.52.6"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.52.6"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
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checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
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version = "0.52.6"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
|
||||
|
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[[package]]
|
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name = "windows_x86_64_msvc"
|
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version = "0.52.6"
|
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
9
Cargo.toml
Normal file
9
Cargo.toml
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
[package]
|
||||
name = "read-time"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
[dependencies]
|
||||
clap = { version = "4.5.23", features = ["derive"] }
|
||||
clap-stdin = "0.5.1"
|
||||
num_cpus = "1.16.0"
|
||||
122
src/main.rs
Normal file
122
src/main.rs
Normal file
|
|
@ -0,0 +1,122 @@
|
|||
use clap::{command, Parser};
|
||||
use clap_stdin::FileOrStdin;
|
||||
use std::{
|
||||
fs::{self, File},
|
||||
io::{self, BufRead, BufReader, Read, Seek, SeekFrom},
|
||||
os::linux::fs::MetadataExt,
|
||||
path::Path,
|
||||
thread, usize,
|
||||
};
|
||||
|
||||
fn modf(value: f64) -> (f64, f64) {
|
||||
(value.trunc(), value.fract().trunc())
|
||||
}
|
||||
|
||||
fn count_words(input: &mut impl BufRead) -> io::Result<usize> {
|
||||
let mut was_ws = true;
|
||||
let mut count = 0usize;
|
||||
|
||||
loop {
|
||||
let buf = input.fill_buf()?;
|
||||
let len = buf.len();
|
||||
if len == 0 {
|
||||
break;
|
||||
}
|
||||
|
||||
for &b in buf {
|
||||
let is_ws = matches!(b, b' ' | b'\t' | b'\r' | b'\n');
|
||||
count += usize::from(!was_ws && is_ws);
|
||||
was_ws = is_ws;
|
||||
}
|
||||
|
||||
input.consume(len);
|
||||
}
|
||||
|
||||
count += usize::from(!was_ws);
|
||||
Ok(count)
|
||||
}
|
||||
|
||||
fn count_file<P: AsRef<Path>>(path: P) -> io::Result<usize> {
|
||||
fs::read(path).and_then(|v| count_words(&mut v.as_slice()))
|
||||
}
|
||||
|
||||
fn count_file2<P: AsRef<Path> + std::marker::Send + Copy>(
|
||||
path: P,
|
||||
threads: usize,
|
||||
) -> io::Result<usize> {
|
||||
let md = fs::metadata(path)?;
|
||||
let blksize = md.st_blksize() as usize;
|
||||
let len: usize = md.len().try_into().expect("could not read file length");
|
||||
let div = ((len / threads) as f64).ceil() as usize;
|
||||
|
||||
let scope = thread::scope(|scope| {
|
||||
let mut handles = Vec::with_capacity(threads);
|
||||
|
||||
for i in 0..threads {
|
||||
let handle = scope.spawn(move || {
|
||||
let mut file = File::open(&path).expect("unable to open file");
|
||||
let mut buf = vec![0u8; blksize];
|
||||
let mut read_len = 1usize;
|
||||
let mut total = 0usize;
|
||||
|
||||
let offset = (i * div) as u64;
|
||||
|
||||
file.seek(SeekFrom::Start(offset))
|
||||
.expect("could not seek to position");
|
||||
|
||||
while total < div && read_len != 0 {
|
||||
if total + blksize > div {
|
||||
buf.truncate(div - total);
|
||||
}
|
||||
|
||||
read_len = file.read(&mut buf).expect("could not read file");
|
||||
total += read_len;
|
||||
}
|
||||
|
||||
count_words(&mut BufReader::new(buf.as_slice())).expect("could not read input")
|
||||
});
|
||||
|
||||
handles.push(handle);
|
||||
}
|
||||
|
||||
let mut count = 0usize;
|
||||
for handle in handles {
|
||||
count += handle.join().expect("failed to read from thread handle");
|
||||
}
|
||||
|
||||
count
|
||||
});
|
||||
|
||||
Ok(scope)
|
||||
}
|
||||
|
||||
#[derive(Parser)]
|
||||
#[command(version, about, long_about = None)]
|
||||
struct Cli {
|
||||
#[arg(short, long, default_value_t = 200)]
|
||||
speed: usize,
|
||||
#[arg(short, long, default_value_t = num_cpus::get())]
|
||||
threads: usize,
|
||||
input: FileOrStdin,
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let cli = Cli::parse();
|
||||
|
||||
let count = if cli.input.is_file() {
|
||||
//count_file(&cli.input.filename()).expect("could not read file")
|
||||
count_file2(&cli.input.filename(), cli.threads).expect("could not read file")
|
||||
} else {
|
||||
let mut buf = cli
|
||||
.input
|
||||
.into_reader()
|
||||
.map(BufReader::new)
|
||||
.expect("could not read from stdin");
|
||||
|
||||
count_words(&mut buf).expect("could not read from stdin")
|
||||
};
|
||||
let time = count as f64 / cli.speed as f64;
|
||||
let (mins, secs) = modf(time);
|
||||
|
||||
println!("{count} words {mins}m{secs}s");
|
||||
}
|
||||
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