refactor(rmdir): use clap instead of getopts

Cargo.lock

@@ -1202,7 +1202,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1260,7 +1260,7 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.46"
+version = "1.0.48"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2046,7 +2046,7 @@ dependencies = [
 name = "uu_rmdir"
 version = "0.0.1"
 dependencies = [
- "getopts 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.33.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "uucore 0.0.4 (git+https://github.com/uutils/uucore.git?branch=canary)",
  "uucore_procs 0.0.4 (git+https://github.com/uutils/uucore.git?branch=canary)",
 ]
@@ -2398,7 +2398,7 @@ source = "git+https://github.com/uutils/uucore.git?branch=canary#869573459f00ba0
 dependencies = [
  "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2450,7 +2450,7 @@ dependencies = [
  "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-shared 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2470,7 +2470,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-backend 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-shared 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2684,7 +2684,7 @@ dependencies = [
 "checksum sha3 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "26405905b6a56a94c60109cfda62610507ac14a65be531f5767dec5c5a8dd6a0"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
-"checksum syn 1.0.46 (registry+https://github.com/rust-lang/crates.io-index)" = "5ad5de3220ea04da322618ded2c42233d02baca219d6f160a3e9c87cda16c942"
+"checksum syn 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)" = "cc371affeffc477f42a221a1e4297aedcea33d47d19b61455588bd9d8f6b19ac"
 "checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
 "checksum synstructure 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3a761d12e6d8dcb4dcf952a7a89b475e3a9d69e4a69307e01a470977642914bd"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"

src/uu/rmdir/Cargo.toml

@@ -15,7 +15,7 @@ edition = "2018"
 path = "src/rmdir.rs"
 
 [dependencies]
-getopts = "0.2.18"
+clap = "2.33"
 uucore = { version="0.0.4", package="uucore", git="https://github.com/uutils/uucore.git", branch="canary" }
 uucore_procs = { version="0.0.4", package="uucore_procs", git="https://github.com/uutils/uucore.git", branch="canary" }
 

src/uu/rmdir/src/rmdir.rs

@@ -5,70 +5,76 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate getopts;
+extern crate clap;
 
 #[macro_use]
 extern crate uucore;
 
+use clap::{App, Arg};
 use std::fs;
 use std::path::Path;
 
-static NAME: &str = "rmdir";
 static VERSION: &str = env!("CARGO_PKG_VERSION");
+static ABOUT: &str = "Remove the DIRECTORY(ies), if they are empty.";
+static OPT_IGNORE_FAIL_NON_EMPTY: &str = "ignore-fail-on-non-empty";
+static OPT_PARENTS: &str = "parents";
+static OPT_VERBOSE: &str = "verbose";
+
+static ARG_DIRS: &str = "dirs";
+
+fn get_usage() -> String {
+    format!("{0} [OPTION]... DIRECTORY...", executable!())
+}
 
 pub fn uumain(args: impl uucore::Args) -> i32 {
-    let args = args.collect_str();
+    let usage = get_usage();
 
-    let mut opts = getopts::Options::new();
+    let matches = App::new(executable!())
+        .version(VERSION)
+        .about(ABOUT)
+        .usage(&usage[..])
+        .arg(
+            Arg::with_name(OPT_IGNORE_FAIL_NON_EMPTY)
+                .long(OPT_IGNORE_FAIL_NON_EMPTY)
+                .help("ignore each failure that is solely because a directory is non-empty"),
+        )
+        .arg(
+            Arg::with_name(OPT_PARENTS)
+                .short("p")
+                .long(OPT_PARENTS)
+                .help(
+                    "remove DIRECTORY and its ancestors; e.g.,
+                  'rmdir -p a/b/c' is similar to rmdir a/b/c a/b a",
+                ),
+        )
+        .arg(
+            Arg::with_name(OPT_VERBOSE)
+                .short("v")
+                .long(OPT_VERBOSE)
+                .help("output a diagnostic for every directory processed"),
+        )
+        .arg(
+            Arg::with_name(ARG_DIRS)
+                .multiple(true)
+                .takes_value(true)
+                .min_values(1)
+                .required(true),
+        )
+        .get_matches_from(args);
 
-    opts.optflag(
+    let dirs: Vec<String> = matches
-        "",
+        .values_of(ARG_DIRS)
-        "ignore-fail-on-non-empty",
+        .map(|v| v.map(ToString::to_string).collect())
-        "ignore each failure that is solely because a directory is non-empty",
+        .unwrap_or_default();
-    );
-    opts.optflag("p", "parents", "remove DIRECTORY and its ancestors; e.g., 'rmdir -p a/b/c' is similar to rmdir a/b/c a/b a");
-    opts.optflag(
-        "v",
-        "verbose",
-        "output a diagnostic for every directory processed",
-    );
-    opts.optflag("h", "help", "print this help and exit");
-    opts.optflag("V", "version", "output version information and exit");
 
-    let matches = match opts.parse(&args[1..]) {
+    let ignore = matches.is_present(OPT_IGNORE_FAIL_NON_EMPTY);
-        Ok(m) => m,
+    let parents = matches.is_present(OPT_PARENTS);
-        Err(f) => {
+    let verbose = matches.is_present(OPT_VERBOSE);
-            show_error!("{}", f);
-            return 1;
-        }
-    };
 
-    if matches.opt_present("help") {
+    match remove(dirs, ignore, parents, verbose) {
-        let msg = format!(
-            "{0} {1}
-
-Usage:
-  {0} [OPTION]... DIRECTORY...
-
-Remove the DIRECTORY(ies), if they are empty.",
-            NAME, VERSION
-        );
-        print!("{}", opts.usage(&msg));
-    } else if matches.opt_present("version") {
-        println!("{} {}", NAME, VERSION);
-    } else if matches.free.is_empty() {
-        show_error!("missing an argument");
-        show_error!("for help, try '{0} --help'", NAME);
-        return 1;
-    } else {
-        let ignore = matches.opt_present("ignore-fail-on-non-empty");
-        let parents = matches.opt_present("parents");
-        let verbose = matches.opt_present("verbose");
-        match remove(matches.free, ignore, parents, verbose) {
         Ok(()) => ( /* pass */ ),
         Err(e) => return e,
     }
-    }
 
     0
 }
@@ -115,7 +121,7 @@ fn remove_dir(path: &Path, ignore: bool, verbose: bool) -> Result<(), i32> {
                 show_error!("removing directory '{}': {}", path.display(), e);
                 r = Err(1);
             }
-            Ok(_) if verbose => println!("Removed directory '{}'", path.display()),
+            Ok(_) if verbose => println!("removing directory, '{}'", path.display()),
             _ => (),
         }
     } else if !ignore {