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ripgrep/ignore/examples/walk.rs
Andrew Gallant 662a9bc73d
deps: update to crossbeam-channel 0.3
This also requires corresponding updates to both rand and rand_core. Doing
an update of rand without doing an update of rand_core results in
compilation errors because two distinct versions of rand_core are included
in the build, and the traits they expose are distinct and incompatible.

We also switch over to using tempfile instead of tempdir, which drops the
last remaining thing keeping rand 0.4 in the build.

Fixes #1141, Fixes #1142
2018-12-15 08:40:04 -05:00

85 lines
2.1 KiB
Rust

extern crate crossbeam_channel as channel;
extern crate ignore;
extern crate walkdir;
use std::env;
use std::io::{self, Write};
use std::path::Path;
use std::thread;
use ignore::WalkBuilder;
use walkdir::WalkDir;
fn main() {
let mut path = env::args().nth(1).unwrap();
let mut parallel = false;
let mut simple = false;
let (tx, rx) = channel::bounded::<DirEntry>(100);
if path == "parallel" {
path = env::args().nth(2).unwrap();
parallel = true;
} else if path == "walkdir" {
path = env::args().nth(2).unwrap();
simple = true;
}
let stdout_thread = thread::spawn(move || {
let mut stdout = io::BufWriter::new(io::stdout());
for dent in rx {
write_path(&mut stdout, dent.path());
}
});
if parallel {
let walker = WalkBuilder::new(path).threads(6).build_parallel();
walker.run(|| {
let tx = tx.clone();
Box::new(move |result| {
use ignore::WalkState::*;
tx.send(DirEntry::Y(result.unwrap())).unwrap();
Continue
})
});
} else if simple {
let walker = WalkDir::new(path);
for result in walker {
tx.send(DirEntry::X(result.unwrap())).unwrap();
}
} else {
let walker = WalkBuilder::new(path).build();
for result in walker {
tx.send(DirEntry::Y(result.unwrap())).unwrap();
}
}
drop(tx);
stdout_thread.join().unwrap();
}
enum DirEntry {
X(walkdir::DirEntry),
Y(ignore::DirEntry),
}
impl DirEntry {
fn path(&self) -> &Path {
match *self {
DirEntry::X(ref x) => x.path(),
DirEntry::Y(ref y) => y.path(),
}
}
}
#[cfg(unix)]
fn write_path<W: Write>(mut wtr: W, path: &Path) {
use std::os::unix::ffi::OsStrExt;
wtr.write(path.as_os_str().as_bytes()).unwrap();
wtr.write(b"\n").unwrap();
}
#[cfg(not(unix))]
fn write_path<W: Write>(mut wtr: W, path: &Path) {
wtr.write(path.to_string_lossy().as_bytes()).unwrap();
wtr.write(b"\n").unwrap();
}