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#![warn(trivial_casts, trivial_numeric_casts)]
#![warn(unused_results)]
extern crate ansi_term;
extern crate datetime;
extern crate getopts;
extern crate glob;
extern crate libc;
extern crate locale;
extern crate natord;
extern crate num_cpus;
extern crate number_prefix;
extern crate scoped_threadpool;
extern crate term_grid;
extern crate unicode_width;
extern crate users;
extern crate zoneinfo_compiled;
#[cfg(feature="git")] extern crate git2;
#[macro_use] extern crate lazy_static;
use std::ffi::OsStr;
use std::io::{stderr, Write, Result as IOResult};
use std::path::{Component, Path};
use fs::{Dir, File};
use options::{Options, View};
pub use options::Misfire;
mod fs;
mod info;
mod options;
mod output;
mod term;
/// The main program wrapper.
pub struct Exa<'w, W: Write + 'w> {
/// List of command-line options, having been successfully parsed.
pub options: Options,
/// The output handle that we write to. When running the program normally,
/// this will be `std::io::Stdout`, but it can accept any struct that’s
/// `Write` so we can write into, say, a vector for testing.
pub writer: &'w mut W,
/// List of the free command-line arguments that should correspond to file
/// names (anything that isn’t an option).
pub args: Vec<String>,
}
impl<'w, W: Write + 'w> Exa<'w, W> {
pub fn new<S>(args: &[S], writer: &'w mut W) -> Result<Exa<'w, W>, Misfire>
where S: AsRef<OsStr> {
Options::getopts(args).map(move |(opts, args)| Exa {
options: opts,
writer: writer,
args: args,
})
}
pub fn run(&mut self) -> IOResult<()> {
let mut files = Vec::new();
let mut dirs = Vec::new();
// List the current directory by default, like ls.
if self.args.is_empty() {
self.args.push(".".to_owned());
}
for file_name in self.args.iter() {
match File::from_path(Path::new(&file_name), None) {
Err(e) => {
try!(writeln!(stderr(), "{}: {}", file_name, e));
},
Ok(f) => {
if f.is_directory() && !self.options.dir_action.treat_dirs_as_files() {
match f.to_dir(self.options.should_scan_for_git()) {
Ok(d) => dirs.push(d),
Err(e) => try!(writeln!(stderr(), "{}: {}", file_name, e)),
}
}
else {
files.push(f);
}
},
}
}
// We want to print a directory’s name before we list it, *except* in
// the case where it’s the only directory, *except* if there are any
// files to print as well. (It’s a double negative)
let no_files = files.is_empty();
let is_only_dir = dirs.len() == 1 && no_files;
self.options.filter.filter_argument_files(&mut files);
try!(self.print_files(None, files));
self.print_dirs(dirs, no_files, is_only_dir)
}
fn print_dirs(&mut self, dir_files: Vec<Dir>, mut first: bool, is_only_dir: bool) -> IOResult<()> {
for dir in dir_files {
// Put a gap between directories, or between the list of files and
// the first directory.
if first {
first = false;
}
else {
try!(write!(self.writer, "\n"));
}
if !is_only_dir {
try!(writeln!(self.writer, "{}:", dir.path.display()));
}
let mut children = Vec::new();
for file in dir.files() {
match file {
Ok(file) => children.push(file),
Err((path, e)) => try!(writeln!(stderr(), "[{}: {}]", path.display(), e)),
}
};
self.options.filter.filter_child_files(&mut children);
self.options.filter.sort_files(&mut children);
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) {
let mut child_dirs = Vec::new();
for child_dir in children.iter().filter(|f| f.is_directory()) {
match child_dir.to_dir(false) {
Ok(d) => child_dirs.push(d),
Err(e) => try!(writeln!(stderr(), "{}: {}", child_dir.path.display(), e)),
}
}
try!(self.print_files(Some(&dir), children));
try!(self.print_dirs(child_dirs, false, false));
continue;
}
}
try!(self.print_files(Some(&dir), children));
}
Ok(())
}
/// Prints the list of files using whichever view is selected.
/// For various annoying logistical reasons, each one handles
/// printing differently...
fn print_files(&mut self, dir: Option<&Dir>, files: Vec<File>) -> IOResult<()> {
if !files.is_empty() {
match self.options.view {
View::Grid(ref g) => g.view(&files, self.writer),
View::Details(ref d) => d.view(dir, files, self.writer),
View::GridDetails(ref gd) => gd.view(dir, files, self.writer),
View::Lines(ref l) => l.view(files, self.writer),
}
}
else {
Ok(())
}
}
}
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