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Merged
cakebaker merged 1 commit into from
Apr 6, 2026
Merged

head: split head.rs #11679

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84 changes: 84 additions & 0 deletions src/uu/head/src/cli.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,84 @@
// This file is part of the uutils coreutils package.
//
// For the full copyright and license information, please view the LICENSE
// file that was distributed with this source code.

use clap::{Arg, ArgAction, Command};
use std::ffi::OsString;
use uucore::format_usage;
use uucore::translate;

pub mod options {
pub const BYTES: &str = "BYTES";
pub const LINES: &str = "LINES";
pub const QUIET: &str = "QUIET";
pub const VERBOSE: &str = "VERBOSE";
pub const ZERO: &str = "ZERO";
pub const FILES: &str = "FILE";
pub const PRESUME_INPUT_PIPE: &str = "-PRESUME-INPUT-PIPE";
}

pub fn uu_app() -> Command {
Command::new("head")
.version(uucore::crate_version!())
.help_template(uucore::localized_help_template("head"))
.about(translate!("head-about"))
.override_usage(format_usage(&translate!("head-usage")))
.infer_long_args(true)
.arg(
Arg::new(options::BYTES)
.short('c')
.long("bytes")
.value_name("[-]NUM")
.help(translate!("head-help-bytes"))
.overrides_with_all([options::BYTES, options::LINES])
.allow_hyphen_values(true),
)
.arg(
Arg::new(options::LINES)
.short('n')
.long("lines")
.value_name("[-]NUM")
.help(translate!("head-help-lines"))
.overrides_with_all([options::LINES, options::BYTES])
.allow_hyphen_values(true),
)
.arg(
Arg::new(options::QUIET)
.short('q')
.long("quiet")
.visible_alias("silent")
.help(translate!("head-help-quiet"))
.overrides_with_all([options::VERBOSE, options::QUIET])
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::VERBOSE)
.short('v')
.long("verbose")
.help(translate!("head-help-verbose"))
.overrides_with_all([options::QUIET, options::VERBOSE])
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::PRESUME_INPUT_PIPE)
.long("presume-input-pipe")
.alias("-presume-input-pipe")
.hide(true)
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::ZERO)
.short('z')
.long("zero-terminated")
.help(translate!("head-help-zero-terminated"))
.overrides_with(options::ZERO)
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::FILES)
.action(ArgAction::Append)
.value_parser(clap::value_parser!(OsString))
.value_hint(clap::ValueHint::FilePath),
)
}
81 changes: 5 additions & 76 deletions src/uu/head/src/head.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@

// spell-checker:ignore (vars) seekable memrchr

use clap::{Arg, ArgAction, ArgMatches, Command};
use clap::ArgMatches;
use memchr::memrchr_iter;
use std::ffi::OsString;
use std::fs::File;
Expand All @@ -18,20 +18,14 @@ use thiserror::Error;
use uucore::display::{Quotable, print_verbatim};
use uucore::error::{FromIo, UError, UResult, USimpleError};
use uucore::line_ending::LineEnding;
use uucore::show;
use uucore::translate;
use uucore::{format_usage, show};

const BUF_SIZE: usize = 65536;

mod options {
pub const BYTES: &str = "BYTES";
pub const LINES: &str = "LINES";
pub const QUIET: &str = "QUIET";
pub const VERBOSE: &str = "VERBOSE";
pub const ZERO: &str = "ZERO";
pub const FILES: &str = "FILE";
pub const PRESUME_INPUT_PIPE: &str = "-PRESUME-INPUT-PIPE";
}
mod cli;
use crate::cli::options;
pub use crate::cli::uu_app;

mod parse;
mod take;
Expand Down Expand Up @@ -66,71 +60,6 @@ impl UError for HeadError {

type HeadResult<T> = Result<T, HeadError>;

pub fn uu_app() -> Command {
Command::new("head")
.version(uucore::crate_version!())
.help_template(uucore::localized_help_template("head"))
.about(translate!("head-about"))
.override_usage(format_usage(&translate!("head-usage")))
.infer_long_args(true)
.arg(
Arg::new(options::BYTES)
.short('c')
.long("bytes")
.value_name("[-]NUM")
.help(translate!("head-help-bytes"))
.overrides_with_all([options::BYTES, options::LINES])
.allow_hyphen_values(true),
)
.arg(
Arg::new(options::LINES)
.short('n')
.long("lines")
.value_name("[-]NUM")
.help(translate!("head-help-lines"))
.overrides_with_all([options::LINES, options::BYTES])
.allow_hyphen_values(true),
)
.arg(
Arg::new(options::QUIET)
.short('q')
.long("quiet")
.visible_alias("silent")
.help(translate!("head-help-quiet"))
.overrides_with_all([options::VERBOSE, options::QUIET])
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::VERBOSE)
.short('v')
.long("verbose")
.help(translate!("head-help-verbose"))
.overrides_with_all([options::QUIET, options::VERBOSE])
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::PRESUME_INPUT_PIPE)
.long("presume-input-pipe")
.alias("-presume-input-pipe")
.hide(true)
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::ZERO)
.short('z')
.long("zero-terminated")
.help(translate!("head-help-zero-terminated"))
.overrides_with(options::ZERO)
.action(ArgAction::SetTrue),
)
.arg(
Arg::new(options::FILES)
.action(ArgAction::Append)
.value_parser(clap::value_parser!(OsString))
.value_hint(clap::ValueHint::FilePath),
)
}

#[derive(Debug, PartialEq)]
enum Mode {
FirstLines(u64),
Expand Down
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