RGBCube/uutils-coreutils
1
Fork 0
mirror of https://github.com/RGBCube/uutils-coreutils synced 2025-07-29 03:57:44 +00:00
Code Issues Activity

echo: Refactored help message. (#1886)

Browse source
This commit is contained in:
Alessandro Stoltenberg 2021-03-23 11:55:18 +01:00 • committed by GitHub
parent 545fe7d887
commit b54f0b1ff2
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 34 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

57
src/uu/echo/src/echo.rs
View file

@ -9,17 +9,17 @@
#[macro_use]
extern crate uucore;
use clap::{App, Arg};
use clap::{crate_version, App, Arg};
use std::io::{self, Write};
use std::iter::Peekable;
use std::str::Chars;
static VERSION: &str = env!("CARGO_PKG_VERSION");
const NAME: &str = "echo";
const SYNTAX: &str = "[OPTIONS]... [STRING]...";
const SUMMARY: &str = "display a line of text";
const HELP: &str = r#"
static NAME: &str = "echo";
static USAGE: &str = "[OPTIONS]... [STRING]...";
static SUMMARY: &str = "display a line of text";
static AFTER_HELP: &str = r#"
Echo the STRING(s) to standard output.
If -e is in effect, the following sequences are recognized:
\\\\ backslash
@ -37,10 +37,10 @@ const HELP: &str = r#"
"#;
mod options {
pub const STRING: &str = "string";
pub const NEWLINE: &str = "n";
pub const ENABLE_ESCAPE: &str = "e";
pub const DISABLE_ESCAPE: &str = "E";
pub static STRING: &str = "STRING";
pub static NO_NEWLINE: &str = "no_newline";
pub static ENABLE_BACKSLASH_ESCAPE: &str = "enable_backslash_escape";
pub static DISABLE_BACKSLASH_ESCAPE: &str = "disable_backslash_escape";
}
fn parse_code(
@ -122,32 +122,43 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
// Final argument must have multiple(true) or the usage string equivalent.
.setting(clap::AppSettings::TrailingVarArg)
.setting(clap::AppSettings::AllowLeadingHyphen)
.version(VERSION)
.usage(SYNTAX)
.version(crate_version!())
.usage(USAGE)
.about(SUMMARY)
.help(HELP)
.arg(Arg::with_name(options::STRING).hidden(true).multiple(true))
.after_help(AFTER_HELP)
.arg(
Arg::with_name(options::NEWLINE)
Arg::with_name(options::NO_NEWLINE)
.short("n")
.help("do not output the trailing newline"),
.help("do not output the trailing newline")
.takes_value(false)
.display_order(1),
)
.arg(
Arg::with_name(options::ENABLE_ESCAPE)
Arg::with_name(options::ENABLE_BACKSLASH_ESCAPE)
.short("e")
.help("enable interpretation of backslash escapes"),
.help("enable interpretation of backslash escapes")
.takes_value(false)
.display_order(2),
)
.arg(
Arg::with_name(options::DISABLE_ESCAPE)
Arg::with_name(options::DISABLE_BACKSLASH_ESCAPE)
.short("E")
.help("disable interpretation of backslash escapes (default)"),
.help("disable interpretation of backslash escapes (default)")
.takes_value(false)
.display_order(3),
)
.arg(
Arg::with_name(options::STRING)
.hidden(true)
.multiple(true)
.allow_hyphen_values(true),
)
.get_matches_from(args);
let no_newline = matches.is_present("n");
let escaped = matches.is_present("e");
let no_newline = matches.is_present(options::NO_NEWLINE);
let escaped = matches.is_present(options::ENABLE_BACKSLASH_ESCAPE);
let values: Vec<String> = match matches.values_of(options::STRING) {
Some(v) => v.map(|v| v.to_string()).collect(),
Some(s) => s.map(|s| s.to_string()).collect(),
None => vec!["".to_string()],
};