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main.rs
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main.rs
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use std::error;
use std::io::{self, Write};
use std::process;
use std::sync::Mutex;
use std::time::Instant;
use ignore::WalkState;
use args::Args;
use subject::Subject;
#[macro_use]
mod messages;
mod app;
mod args;
mod config;
mod logger;
mod path_printer;
mod search;
mod subject;
// Since Rust no longer uses jemalloc by default, ripgrep will, by default,
// use the system allocator. On Linux, this would normally be glibc's
// allocator, which is pretty good. In particular, ripgrep does not have a
// particularly allocation heavy workload, so there really isn't much
// difference (for ripgrep's purposes) between glibc's allocator and jemalloc.
//
// However, when ripgrep is built with musl, this means ripgrep will use musl's
// allocator, which appears to be substantially worse. (musl's goal is not to
// have the fastest version of everything. Its goal is to be small and amenable
// to static compilation.) Even though ripgrep isn't particularly allocation
// heavy, musl's allocator appears to slow down ripgrep quite a bit. Therefore,
// when building with musl, we use jemalloc.
//
// We don't unconditionally use jemalloc because it can be nice to use the
// system's default allocator by default. Moreover, jemalloc seems to increase
// compilation times by a bit.
//
// Moreover, we only do this on 64-bit systems since jemalloc doesn't support
// i686.
#[cfg(all(target_env = "musl", target_pointer_width = "64"))]
#[global_allocator]
static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
type Result<T> = ::std::result::Result<T, Box<dyn error::Error>>;
fn main() {
if let Err(err) = Args::parse().and_then(try_main) {
eprintln!("{}", err);
process::exit(2);
}
}
fn try_main(args: Args) -> Result<()> {
use args::Command::*;
let matched = match args.command()? {
Search => search(&args),
SearchParallel => search_parallel(&args),
SearchNever => Ok(false),
Files => files(&args),
FilesParallel => files_parallel(&args),
Types => types(&args),
PCRE2Version => pcre2_version(&args),
}?;
if matched && (args.quiet() || !messages::errored()) {
process::exit(0)
} else if messages::errored() {
process::exit(2)
} else {
process::exit(1)
}
}
/// The top-level entry point for single-threaded search. This recursively
/// steps through the file list (current directory by default) and searches
/// each file sequentially.
fn search(args: &Args) -> Result<bool> {
let started_at = Instant::now();
let quit_after_match = args.quit_after_match()?;
let subject_builder = args.subject_builder();
let mut stats = args.stats()?;
let mut searcher = args.search_worker(args.stdout())?;
let mut matched = false;
let mut searched = false;
for result in args.walker()? {
let subject = match subject_builder.build_from_result(result) {
Some(subject) => subject,
None => continue,
};
searched = true;
let search_result = match searcher.search(&subject) {
Ok(search_result) => search_result,
Err(err) => {
// A broken pipe means graceful termination.
if err.kind() == io::ErrorKind::BrokenPipe {
break;
}
err_message!("{}: {}", subject.path().display(), err);
continue;
}
};
matched = matched || search_result.has_match();
if let Some(ref mut stats) = stats {
*stats += search_result.stats().unwrap();
}
if matched && quit_after_match {
break;
}
}
if args.using_default_path() && !searched {
eprint_nothing_searched();
}
if let Some(ref stats) = stats {
let elapsed = Instant::now().duration_since(started_at);
// We don't care if we couldn't print this successfully.
let _ = searcher.print_stats(elapsed, stats);
}
Ok(matched)
}
/// The top-level entry point for multi-threaded search. The parallelism is
/// itself achieved by the recursive directory traversal. All we need to do is
/// feed it a worker for performing a search on each file.
fn search_parallel(args: &Args) -> Result<bool> {
use std::sync::atomic::AtomicBool;
use std::sync::atomic::Ordering::SeqCst;
let quit_after_match = args.quit_after_match()?;
let started_at = Instant::now();
let subject_builder = args.subject_builder();
let bufwtr = args.buffer_writer()?;
let stats = args.stats()?.map(Mutex::new);
let matched = AtomicBool::new(false);
let searched = AtomicBool::new(false);
let mut searcher_err = None;
args.walker_parallel()?.run(|| {
let bufwtr = &bufwtr;
let stats = &stats;
let matched = &matched;
let searched = &searched;
let subject_builder = &subject_builder;
let mut searcher = match args.search_worker(bufwtr.buffer()) {
Ok(searcher) => searcher,
Err(err) => {
searcher_err = Some(err);
return Box::new(move |_| WalkState::Quit);
}
};
Box::new(move |result| {
let subject = match subject_builder.build_from_result(result) {
Some(subject) => subject,
None => return WalkState::Continue,
};
searched.store(true, SeqCst);
searcher.printer().get_mut().clear();
let search_result = match searcher.search(&subject) {
Ok(search_result) => search_result,
Err(err) => {
err_message!("{}: {}", subject.path().display(), err);
return WalkState::Continue;
}
};
if search_result.has_match() {
matched.store(true, SeqCst);
}
if let Some(ref locked_stats) = *stats {
let mut stats = locked_stats.lock().unwrap();
*stats += search_result.stats().unwrap();
}
if let Err(err) = bufwtr.print(searcher.printer().get_mut()) {
// A broken pipe means graceful termination.
if err.kind() == io::ErrorKind::BrokenPipe {
return WalkState::Quit;
}
// Otherwise, we continue on our merry way.
err_message!("{}: {}", subject.path().display(), err);
}
if matched.load(SeqCst) && quit_after_match {
WalkState::Quit
} else {
WalkState::Continue
}
})
});
if let Some(err) = searcher_err.take() {
return Err(err);
}
if args.using_default_path() && !searched.load(SeqCst) {
eprint_nothing_searched();
}
if let Some(ref locked_stats) = stats {
let elapsed = Instant::now().duration_since(started_at);
let stats = locked_stats.lock().unwrap();
let mut searcher = args.search_worker(args.stdout())?;
// We don't care if we couldn't print this successfully.
let _ = searcher.print_stats(elapsed, &stats);
}
Ok(matched.load(SeqCst))
}
fn eprint_nothing_searched() {
err_message!(
"No files were searched, which means ripgrep probably \
applied a filter you didn't expect.\n\
Running with --debug will show why files are being skipped."
);
}
/// The top-level entry point for listing files without searching them. This
/// recursively steps through the file list (current directory by default) and
/// prints each path sequentially using a single thread.
fn files(args: &Args) -> Result<bool> {
let quit_after_match = args.quit_after_match()?;
let subject_builder = args.subject_builder();
let mut matched = false;
let mut path_printer = args.path_printer(args.stdout())?;
for result in args.walker()? {
let subject = match subject_builder.build_from_result(result) {
Some(subject) => subject,
None => continue,
};
matched = true;
if quit_after_match {
break;
}
if let Err(err) = path_printer.write_path(subject.path()) {
// A broken pipe means graceful termination.
if err.kind() == io::ErrorKind::BrokenPipe {
break;
}
// Otherwise, we have some other error that's preventing us from
// writing to stdout, so we should bubble it up.
return Err(err.into());
}
}
Ok(matched)
}
/// The top-level entry point for listing files without searching them. This
/// recursively steps through the file list (current directory by default) and
/// prints each path sequentially using multiple threads.
fn files_parallel(args: &Args) -> Result<bool> {
use std::sync::atomic::AtomicBool;
use std::sync::atomic::Ordering::SeqCst;
use std::sync::mpsc;
use std::thread;
let quit_after_match = args.quit_after_match()?;
let subject_builder = args.subject_builder();
let mut path_printer = args.path_printer(args.stdout())?;
let matched = AtomicBool::new(false);
let (tx, rx) = mpsc::channel::<Subject>();
let print_thread = thread::spawn(move || -> io::Result<()> {
for subject in rx.iter() {
path_printer.write_path(subject.path())?;
}
Ok(())
});
args.walker_parallel()?.run(|| {
let subject_builder = &subject_builder;
let matched = &matched;
let tx = tx.clone();
Box::new(move |result| {
let subject = match subject_builder.build_from_result(result) {
Some(subject) => subject,
None => return WalkState::Continue,
};
matched.store(true, SeqCst);
if quit_after_match {
WalkState::Quit
} else {
match tx.send(subject) {
Ok(_) => WalkState::Continue,
Err(_) => WalkState::Quit,
}
}
})
});
drop(tx);
if let Err(err) = print_thread.join().unwrap() {
// A broken pipe means graceful termination, so fall through.
// Otherwise, something bad happened while writing to stdout, so bubble
// it up.
if err.kind() != io::ErrorKind::BrokenPipe {
return Err(err.into());
}
}
Ok(matched.load(SeqCst))
}
/// The top-level entry point for --type-list.
fn types(args: &Args) -> Result<bool> {
let mut count = 0;
let mut stdout = args.stdout();
for def in args.type_defs()? {
count += 1;
stdout.write_all(def.name().as_bytes())?;
stdout.write_all(b": ")?;
let mut first = true;
for glob in def.globs() {
if !first {
stdout.write_all(b", ")?;
}
stdout.write_all(glob.as_bytes())?;
first = false;
}
stdout.write_all(b"\n")?;
}
Ok(count > 0)
}
/// The top-level entry point for --pcre2-version.
fn pcre2_version(args: &Args) -> Result<bool> {
#[cfg(feature = "pcre2")]
fn imp(args: &Args) -> Result<bool> {
use grep::pcre2;
let mut stdout = args.stdout();
let (major, minor) = pcre2::version();
writeln!(stdout, "PCRE2 {}.{} is available", major, minor)?;
if cfg!(target_pointer_width = "64") && pcre2::is_jit_available() {
writeln!(stdout, "JIT is available")?;
}
Ok(true)
}
#[cfg(not(feature = "pcre2"))]
fn imp(args: &Args) -> Result<bool> {
let mut stdout = args.stdout();
writeln!(stdout, "PCRE2 is not available in this build of ripgrep.")?;
Ok(false)
}
imp(args)
}