#![feature(collections, convert, core, exit_status, file_type, fs_ext, fs_mode, fs_time, io, libc, metadata_ext, os, scoped, std_misc, symlink_metadata)] #![allow(deprecated)] // Other platforms than macos don't need std_misc but you can't // use #[cfg] on features. #![allow(unused_features)] extern crate ansi_term; extern crate datetime; extern crate getopts; extern crate locale; extern crate natord; extern crate num_cpus; extern crate number_prefix; extern crate pad; extern crate users; extern crate unicode_width; #[cfg(feature="git")] extern crate git2; use std::env; use std::fs; use std::path::{Component, Path, PathBuf}; use std::sync::mpsc::{channel, sync_channel}; use std::thread; use dir::Dir; use file::File; use options::{Options, View}; use output::lines_view; pub mod column; pub mod dir; pub mod feature; pub mod file; pub mod filetype; pub mod options; pub mod output; pub mod term; #[cfg(not(test))] struct Exa<'a> { count: usize, options: Options, dirs: Vec, files: Vec>, } #[cfg(not(test))] impl<'a> Exa<'a> { fn new(options: Options) -> Exa<'a> { Exa { count: 0, options: options, dirs: Vec::new(), files: Vec::new(), } } fn load(&mut self, files: &[String]) { // Separate the user-supplied paths into directories and files. // Files are shown first, and then each directory is expanded // and listed second. let is_tree = self.options.dir_action.is_tree() || self.options.dir_action.is_as_file(); let total_files = files.len(); // Denotes the maxinum number of concurrent threads let (thread_capacity_tx, thread_capacity_rs) = sync_channel(8 * num_cpus::get()); // Communication between consumer thread and producer threads enum StatResult<'a> { File(File<'a>), Path(PathBuf), Error } let (results_tx, results_rx) = channel(); // Spawn consumer thread let _consumer = thread::scoped(move || { for _ in 0..total_files { // Make room for more producer threads let _ = thread_capacity_rs.recv(); // Receive a producer's result match results_rx.recv() { Ok(result) => match result { StatResult::File(file) => self.files.push(file), StatResult::Path(path) => self.dirs.push(path), StatResult::Error => () }, Err(_) => unreachable!(), } self.count += 1; } }); for file in files.iter() { let file = file.clone(); let results_tx = results_tx.clone(); // Block until there is room for another thread let _ = thread_capacity_tx.send(()); // Spawn producer thread thread::spawn(move || { let path = Path::new(&*file); let _ = results_tx.send(match fs::metadata(&path) { Ok(stat) => { if !stat.is_dir() { StatResult::File(File::with_stat(stat, &path, None, false)) } else if is_tree { StatResult::File(File::with_stat(stat, &path, None, true)) } else { StatResult::Path(path.to_path_buf()) } } Err(e) => { println!("{}: {}", file, e); StatResult::Error } }); }); } } fn print_files(&self) { if !self.files.is_empty() { self.print(None, &self.files[..]); } } fn print_dirs(&mut self) { let mut first = self.files.is_empty(); // Directories are put on a stack rather than just being iterated through, // as the vector can change as more directories are added. loop { let dir_path = match self.dirs.pop() { None => break, Some(f) => f, }; // Put a gap between directories, or between the list of files and the // first directory. if first { first = false; } else { print!("\n"); } match Dir::readdir(&dir_path) { Ok(ref dir) => { let mut files = dir.files(false); self.options.transform_files(&mut files); // When recursing, add any directories to the dirs stack // backwards: the *last* element of the stack is used each // time, so by inserting them backwards, they get displayed in // the correct sort order. if let Some(recurse_opts) = self.options.dir_action.recurse_options() { let depth = dir_path.components().filter(|&c| c != Component::CurDir).count() + 1; if !recurse_opts.tree && !recurse_opts.is_too_deep(depth) { for dir in files.iter().filter(|f| f.is_directory()).rev() { self.dirs.push(dir.path.clone()); } } } if self.count > 1 { println!("{}:", dir_path.display()); } self.count += 1; self.print(Some(dir), &files[..]); } Err(e) => { println!("{}: {}", dir_path.display(), e); return; } }; } } fn print(&self, dir: Option<&Dir>, files: &[File]) { match self.options.view { View::Grid(g) => g.view(files), View::Details(d) => d.view(dir, files), View::Lines => lines_view(files), } } } #[cfg(not(test))] fn main() { let args: Vec = env::args().collect(); match Options::getopts(args.tail()) { Ok((options, paths)) => { let mut exa = Exa::new(options); exa.load(&paths); exa.print_files(); exa.print_dirs(); }, Err(e) => { println!("{}", e); env::set_exit_status(e.error_code()); }, }; }