mirror of
https://github.com/uutils/coreutils
synced 2024-07-21 09:54:42 +00:00
Merge pull request #845 from peschkaj/master
Basic implementation of ls
This commit is contained in:
commit
1fafde8c27
20
Cargo.lock
generated
20
Cargo.lock
generated
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@ -35,6 +35,7 @@ dependencies = [
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"link 0.0.1",
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"ln 0.0.1",
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"logname 0.0.1",
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"ls 0.0.1",
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"memchr 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
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"mkdir 0.0.1",
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"mkfifo 0.0.1",
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@ -444,6 +445,16 @@ dependencies = [
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"uucore 0.0.1",
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]
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[[package]]
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name = "ls"
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version = "0.0.1"
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dependencies = [
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"getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
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"libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
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"pretty-bytes 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"uucore 0.0.1",
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]
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[[package]]
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name = "memchr"
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version = "0.1.7"
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@ -567,6 +578,15 @@ dependencies = [
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"uucore 0.0.1",
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]
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[[package]]
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name = "pretty-bytes"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
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"libc 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "primal"
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version = "0.2.3"
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@ -50,6 +50,7 @@ generic = [
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"head",
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"link",
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"ln",
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"ls",
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"mkdir",
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"nl",
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"nproc",
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@ -119,6 +120,7 @@ id = { optional=true, path="src/id" }
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kill = { optional=true, path="src/kill" }
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link = { optional=true, path="src/link" }
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ln = { optional=true, path="src/ln" }
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ls = { optional=true, path="src/ls" }
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logname = { optional=true, path="src/logname" }
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mkdir = { optional=true, path="src/mkdir" }
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mktemp = { optional=true, path="src/mktemp" }
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2
Makefile
2
Makefile
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@ -58,6 +58,7 @@ PROGS := \
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head \
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link \
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ln \
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ls \
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mkdir \
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mktemp \
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nl \
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@ -145,6 +146,7 @@ TEST_PROGS := \
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head \
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link \
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ln \
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ls \
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mkdir \
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mktemp \
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mv \
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18
src/ls/Cargo.toml
Normal file
18
src/ls/Cargo.toml
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@ -0,0 +1,18 @@
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[package]
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name = "ls"
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version = "0.0.1"
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authors = ["Jeremiah Peschka <jeremiah.peschka@gmail.com>"]
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[lib]
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name = "uu_ls"
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path = "ls.rs"
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[dependencies]
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getopts = "*"
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libc = "*"
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uucore = { path="../uucore" }
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pretty-bytes = "0.1.0"
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[[bin]]
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name = "ls"
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path = "main.rs"
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227
src/ls/ls.rs
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227
src/ls/ls.rs
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@ -0,0 +1,227 @@
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#![crate_name = "uu_ls"]
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/*
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* This file is part of the uutils coreutils package.
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*
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* (c) Jeremiah Peschka <jeremiah.peschka@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE file
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* that was distributed with this source code.
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*/
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extern crate getopts;
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extern crate pretty_bytes;
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use pretty_bytes::converter::convert;
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#[macro_use]
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extern crate uucore;
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use getopts::Options;
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use std::fs;
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use std::fs::{ReadDir, DirEntry, FileType, Metadata};
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use std::ffi::{OsString};
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use std::path::Path;
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use std::io::Write;
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#[derive(Copy, Clone, PartialEq)]
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enum Mode {
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Help,
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Version,
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List
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}
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static NAME: &'static str = "ls";
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static VERSION: &'static str = env!("CARGO_PKG_VERSION");
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pub fn uumain(args: Vec<String>) -> i32 {
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let mut opts = Options::new();
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opts.optflag("", "help", "display this help and exit");
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opts.optflag("", "version", "output version information and exit");
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opts.optflag("a", "all", "Do not ignore hidden files (files with names that start with '.').");
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opts.optflag("A", "almost-all", "In a directory, do not ignore all file names that start with '.', only ignore '.' and '..'.");
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opts.optflag("B", "ignore-backups", "Ignore files that end with ~. Equivalent to using `--ignore='*~'` or `--ignore='.*~'.");
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opts.optflag("d", "directory", "Only list the names of directories, rather than listing directory contents. This will not follow symbolic links unless one of `--dereference-command-line (-H)`, `--dereference (-L)`, or `--dereference-command-line-symlink-to-dir` is specified.");
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opts.optflag("H", "dereference-command-line", "If a command line argument specifies a symbolic link, show information about the linked file rather than the link itself.");
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opts.optflag("h", "human-readable", "Print human readable file sizes (e.g. 1K 234M 56G).");
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let matches = match opts.parse(&args[1..]) {
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Ok(m) => m,
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Err(e) => {
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show_error!("{}", e);
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panic!()
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},
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};
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let mode = if matches.opt_present("version") {
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Mode::Version
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} else if matches.opt_present("help") {
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Mode::Help
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} else {
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Mode::List
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};
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match mode {
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Mode::Version => version(),
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Mode::Help => help(),
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Mode::List => list(matches)
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}
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0
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}
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fn version() {
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println!("{} {}", NAME, VERSION);
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}
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fn help() {
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let msg = format!("{0} {1}\n\n\
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Usage: {0} [OPTION]... DIRECTORY \n \
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or: {0} [OPTION]... [FILE]... \n \
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\n \
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By default, ls will list the files and contents of any directories on \
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the command line, expect that it will ignore files and directories \
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whose names start with '.'. \n\
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\n", NAME, VERSION);
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println!("{}", msg);
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}
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fn list(options: getopts::Matches) {
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let locs: Vec<String> = if options.free.is_empty() {
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vec![String::from(".")]
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} else {
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options.free.iter().cloned().collect()
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};
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for loc in locs {
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let p = Path::new(&loc);
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if !p.exists() {
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show_error!("Cannot find path '{}' because it does not exist.", loc);
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panic!();
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}
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if p.is_dir() {
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match fs::read_dir(p) {
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Err(e) => {
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show_error!("Cannot read directory '{}'. \n Reason: {}", loc, e);
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panic!();
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},
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Ok(entries) => enter_directory(entries, &options),
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};
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}
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if p.is_file() {
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display_item(Path::new(p), &options)
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}
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}
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}
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fn enter_directory(contents: ReadDir, options: &getopts::Matches) {
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for entry in contents {
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let entry = match entry {
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Err(err) => {
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show_error!("{}", err);
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panic!();
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},
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Ok(en) => en
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};
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// Currently have a DirEntry that we can believe in.
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display_dir_entry(entry, options);
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}
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}
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fn display_dir_entry(entry: DirEntry, options: &getopts::Matches) {
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let md = match entry.metadata() {
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Err(e) => {
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show_error!("Unable to retrieve metadata for {}. \n Error: {}",
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display_file_name(entry.file_name()), e);
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panic!();
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},
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Ok(md) => md
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};
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println!(" {}{} {} somebody somegroup {: >9} {}",
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display_file_type(entry.file_type()),
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display_permissions(&md),
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display_symlink_count(&md),
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display_file_size(&md, options),
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display_file_name(entry.file_name())
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);
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}
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fn display_file_size(metadata: &Metadata, options: &getopts::Matches) -> String {
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if options.opt_present("human-readable") {
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convert(metadata.len() as f64)
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} else {
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metadata.len().to_string()
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}
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}
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fn display_file_type(file_type: Result<FileType, std::io::Error>) -> String {
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let file_type = match file_type {
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Err(e) => {
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show_error!("{}", e);
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panic!()
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},
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Ok(ft) => ft
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};
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if file_type.is_dir() {
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"d".to_string()
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} else if file_type.is_symlink() {
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"l".to_string()
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} else {
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"-".to_string()
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}
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}
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fn display_file_name(name: OsString) -> String {
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name.to_string_lossy().into_owned()
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}
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#[cfg(target_family = "windows")]
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#[allow(unused_variables)]
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fn display_symlink_count(metadata: &Metadata) -> String {
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// Currently not sure of how to get this on Windows, so I'm punting.
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// Git Bash looks like it may do the same thing.
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String::from("1")
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}
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#[cfg(target_family = "unix")]
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fn display_symlink_count(metadata: &Metadata) -> String {
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use std::os::unix::fs::MetadataExt;
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metadata.nlink().to_string()
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}
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#[cfg(target_family = "windows")]
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#[allow(unused_variables)]
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fn display_permissions(metadata: &Metadata) -> String {
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String::from("---------")
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}
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#[cfg(target_family = "unix")]
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fn display_permissions(metadata: &Metadata) -> String {
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use std::os::unix::fs::PermissionsExt;
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"xxxxxxxxx".to_string()
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}
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fn display_item(item: &Path, options: &getopts::Matches) {
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// let fileType = item.file
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// let mut fileMeta = String::new();
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// fileMeta = fileMeta + if item.is_dir() {
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// "d"
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// } else if item.sy
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// } else {
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// "-"
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// };
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// println!("{}{}", displayString, item.display());
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}
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5
src/ls/main.rs
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5
src/ls/main.rs
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extern crate uu_ls;
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fn main() {
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std::process::exit(uu_ls::uumain(std::env::args().collect()));
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}
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16
tests/ls.rs
Normal file
16
tests/ls.rs
Normal file
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@ -0,0 +1,16 @@
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#[macro_use]
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mod common;
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use common::util::*;
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static UTIL_NAME: &'static str = "ls";
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#[test]
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fn test_ls_ls() {
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let (at, mut ucmd) = testing(UTIL_NAME);
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let result = ucmd.run();
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let exit_success = result.success;
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assert_eq!(exit_success, true);
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}
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