exa/src/exa.rs
Benjamin Sago 5b1966d261 Move filter and dir_action from options to fs
This commit moves the definitions of Filter and DirAction from the options module to the fs module, but leaves the parts that actually have to do with option parsing alone.

Now, the options module shouldn’t define any types that get used elsewhere in the program: it only adds functionality to types that already exist.
2017-07-24 08:34:50 +01:00

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6.4 KiB
Rust
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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, PathBuf};
use ansi_term::{ANSIStrings, Style};
use fs::{Dir, File};
use options::Options;
pub use options::Misfire;
use output::{escape, lines, grid, grid_details, details, View, Mode};
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 thats
/// `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 isnt an option).
pub args: Vec<String>,
}
impl<'w, W: Write + 'w> Exa<'w, W> {
pub fn new<C>(args: C, writer: &'w mut W) -> Result<Exa<'w, W>, Misfire>
where C: IntoIterator, C::Item: AsRef<OsStr> {
Options::getopts(args).map(move |(options, args)| {
Exa { options, writer, args }
})
}
pub fn run(&mut self) -> IOResult<i32> {
let mut files = Vec::new();
let mut dirs = Vec::new();
let mut exit_status = 0;
// List the current directory by default, like ls.
if self.args.is_empty() {
self.args.push(".".to_owned());
}
for file_name in &self.args {
match File::new(PathBuf::from(file_name), None, None) {
Err(e) => {
exit_status = 2;
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) => writeln!(stderr(), "{}: {}", file_name, e)?,
}
}
else {
files.push(f);
}
},
}
}
// We want to print a directorys name before we list it, *except* in
// the case where its the only directory, *except* if there are any
// files to print as well. (Its 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);
self.print_files(None, files)?;
self.print_dirs(dirs, no_files, is_only_dir, exit_status)
}
fn print_dirs(&mut self, dir_files: Vec<Dir>, mut first: bool, is_only_dir: bool, exit_status: i32) -> IOResult<i32> {
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 {
write!(self.writer, "\n")?;
}
if !is_only_dir {
let mut bits = Vec::new();
escape(dir.path.display().to_string(), &mut bits, Style::default(), Style::default());
writeln!(self.writer, "{}:", ANSIStrings(&bits))?;
}
let mut children = Vec::new();
for file in dir.files(self.options.filter.dot_filter) {
match file {
Ok(file) => children.push(file),
Err((path, e)) => 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) => writeln!(stderr(), "{}: {}", child_dir.path.display(), e)?,
}
}
self.print_files(Some(&dir), children)?;
match self.print_dirs(child_dirs, false, false, exit_status) {
Ok(_) => (),
Err(e) => return Err(e),
}
continue;
}
}
self.print_files(Some(&dir), children)?;
}
Ok(exit_status)
}
/// 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() {
let View { ref mode, ref colours, ref style } = self.options.view;
match *mode {
Mode::Lines => lines::Render { files, colours, style }.render(self.writer),
Mode::Grid(ref opts) => grid::Render { files, colours, style, opts }.render(self.writer),
Mode::Details(ref opts) => details::Render { dir, files, colours, style, opts, filter: &self.options.filter, recurse: self.options.dir_action.recurse_options() }.render(self.writer),
Mode::GridDetails(ref grid, ref details) => grid_details::Render { dir, files, colours, style, grid, details, filter: &self.options.filter }.render(self.writer),
}
}
else {
Ok(())
}
}
}