use clap::{crate_version, Arg, ArgAction, Command};
use std::path::{is_separator, PathBuf};
use uucore::display::Quotable;
use uucore::error::{UResult, UUsageError};
use uucore::line_ending::LineEnding;
use uucore::{format_usage, help_about, help_usage};
static ABOUT: &str = help_about!("basename.md");
const USAGE: &str = help_usage!("basename.md");
pub mod options {
pub static MULTIPLE: &str = "multiple";
pub static NAME: &str = "name";
pub static SUFFIX: &str = "suffix";
pub static ZERO: &str = "zero";
}
#[uucore::main]
pub fn uumain(args: impl uucore::Args) -> UResult<()> {
let args = args.collect_lossy();
let matches = uu_app().try_get_matches_from(args)?;
let line_ending = LineEnding::from_zero_flag(matches.get_flag(options::ZERO));
let mut name_args = matches
.get_many::<String>(options::NAME)
.unwrap_or_default()
.collect::<Vec<_>>();
if name_args.is_empty() {
return Err(UUsageError::new(1, "missing operand".to_string()));
}
let multiple_paths =
matches.get_one::<String>(options::SUFFIX).is_some() || matches.get_flag(options::MULTIPLE);
let suffix = if multiple_paths {
matches
.get_one::<String>(options::SUFFIX)
.cloned()
.unwrap_or_default()
} else {
match name_args.len() {
0 => panic!("already checked"),
1 => String::default(),
2 => name_args.pop().unwrap().clone(),
_ => {
return Err(UUsageError::new(
1,
format!("extra operand {}", name_args[2].quote(),),
));
}
}
};
for path in name_args {
print!("{}{}", basename(path, &suffix), line_ending);
}
Ok(())
}
pub fn uu_app() -> Command {
Command::new(uucore::util_name())
.version(crate_version!())
.about(ABOUT)
.override_usage(format_usage(USAGE))
.infer_long_args(true)
.arg(
Arg::new(options::MULTIPLE)
.short('a')
.long(options::MULTIPLE)
.help("support multiple arguments and treat each as a NAME")
.action(ArgAction::SetTrue)
.overrides_with(options::MULTIPLE),
)
.arg(
Arg::new(options::NAME)
.action(clap::ArgAction::Append)
.value_hint(clap::ValueHint::AnyPath)
.hide(true)
.trailing_var_arg(true),
)
.arg(
Arg::new(options::SUFFIX)
.short('s')
.long(options::SUFFIX)
.value_name("SUFFIX")
.help("remove a trailing SUFFIX; implies -a")
.overrides_with(options::SUFFIX),
)
.arg(
Arg::new(options::ZERO)
.short('z')
.long(options::ZERO)
.help("end each output line with NUL, not newline")
.action(ArgAction::SetTrue)
.overrides_with(options::ZERO),
)
}
fn basename(fullname: &str, suffix: &str) -> String {
let path = fullname.trim_end_matches(is_separator);
let path = if path.is_empty() { fullname } else { path };
let pb = PathBuf::from(path);
match pb.components().last() {
Some(c) => {
let name = c.as_os_str().to_str().unwrap();
if name == suffix {
name.to_string()
} else {
name.strip_suffix(suffix).unwrap_or(name).to_string()
}
}
None => String::new(),
}
}