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refactor(truncate): Move to clap

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Sylvestre Ledru 2020-10-23 00:33:58 +02:00
parent f888616c0b
commit 8ad2fd3534
3 changed files with 145 additions and 118 deletions
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Cargo.lock generated
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2
src/uu/truncate/Cargo.toml
View file

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

125
src/uu/truncate/src/truncate.rs
View file

@ -7,11 +7,12 @@
// spell-checker:ignore (ToDO) RFILE refsize rfilename fsize tsize // spell-checker:ignore (ToDO) RFILE refsize rfilename fsize tsize
extern crate getopts; extern crate clap;
#[macro_use] #[macro_use]
extern crate uucore; extern crate uucore;
use clap::{App, Arg};
use std::fs::{metadata, File, OpenOptions}; use std::fs::{metadata, File, OpenOptions};
use std::io::Result; use std::io::Result;
use std::path::Path; use std::path::Path;
@ -27,78 +28,100 @@ enum TruncateMode {
RoundUp, RoundUp,
} }
static NAME: &str = "truncate"; static ABOUT: &str = "Shrink or extend the size of each file to the specified size.";
static VERSION: &str = env!("CARGO_PKG_VERSION"); static VERSION: &str = env!("CARGO_PKG_VERSION");
pub fn uumain(args: impl uucore::Args) -> i32 { static OPT_NO_CREATE: &str = "no-create";
let args = args.collect_str(); static OPT_REFERENCE: &str = "reference";
static OPT_IO_BLOCKS: &str = "io-blocks";
static OPT_SIZE: &str = "size";
static OPT_FILES: &str = "files";
let mut opts = getopts::Options::new(); fn get_usage() -> String {
format!("{0} [OPTION]... [FILE]...", executable!())
}
opts.optflag("c", "no-create", "do not create files that do not exist"); fn get_long_usage() -> String {
opts.optflag( format!(
"o",
"io-blocks",
"treat SIZE as the number of I/O blocks of the file rather than bytes (NOT IMPLEMENTED)",
);
opts.optopt(
"r",
"reference",
"base the size of each file on the size of RFILE",
"RFILE",
);
opts.optopt("s", "size", "set or adjust the size of each file according to SIZE, which is in bytes unless --io-blocks is specified", "SIZE");
opts.optflag("h", "help", "display this help and exit");
opts.optflag("V", "version", "output version information and exit");
let matches = match opts.parse(&args[1..]) {
Ok(m) => m,
Err(f) => crash!(1, "{}", f),
};
if matches.opt_present("help") {
println!("{} {}", NAME, VERSION);
println!();
println!("Usage:");
println!(" {} [OPTION]... FILE...", NAME);
println!();
print!(
"{}",
opts.usage("Shrink or extend the size of each file to the specified size.")
);
println!(
" "
SIZE is an integer with an optional prefix and optional unit. SIZE is an integer with an optional prefix and optional unit.
The available units (K, M, G, T, P, E, Z, and Y) use the following format: The available units (K, M, G, T, P, E, Z, and Y) use the following format:
'KB' => 1000 (kilobytes) 'KB' => 1000 (kilobytes)
'K' => 1024 (kibibytes) 'K' => 1024 (kibibytes)
'MB' => 1000*1000 (megabytes) 'MB' => 1000*1000 (megabytes)
'M' => 1024*1024 (mebibytes) 'M' => 1024*1024 (mebibytes)
'GB' => 1000*1000*1000 (gigabytes) 'GB' => 1000*1000*1000 (gigabytes)
'G' => 1024*1024*1024 (gibibytes) 'G' => 1024*1024*1024 (gibibytes)
SIZE may also be prefixed by one of the following to adjust the size of each SIZE may also be prefixed by one of the following to adjust the size of each
file based on its current size: file based on its current size:
'+' => extend by '+' => extend by
'-' => reduce by '-' => reduce by
'<' => at most '<' => at most
'>' => at least '>' => at least
'/' => round down to multiple of '/' => round down to multiple of
'%' => round up to multiple of" '%' => round up to multiple of"
); )
} else if matches.opt_present("version") { }
println!("{} {}", NAME, VERSION);
} else if matches.free.is_empty() { pub fn uumain(args: impl uucore::Args) -> i32 {
show_error!("missing an argument"); /*
let args = args.collect_str();
let mut opts = getopts::Options::new();*/
let usage = get_usage();
let long_usage = get_long_usage();
let matches = App::new(executable!())
.version(VERSION)
.about(ABOUT)
.usage(&usage[..])
.after_help(&long_usage[..])
.arg(
Arg::with_name(OPT_NO_CREATE)
.short("c")
.long(OPT_NO_CREATE)
.help("do not create files that do not exist")
)
.arg(
Arg::with_name(OPT_IO_BLOCKS)
.short("o")
.long(OPT_IO_BLOCKS)
.help("treat SIZE as the number of I/O blocks of the file rather than bytes (NOT IMPLEMENTED)")
)
.arg(
Arg::with_name(OPT_REFERENCE)
.short("r")
.long(OPT_REFERENCE)
.help("base the size of each file on the size of RFILE")
.value_name("RFILE")
)
.arg(
Arg::with_name(OPT_SIZE)
.short("s")
.long("size")
.help("set or adjust the size of each file according to SIZE, which is in bytes unless --io-blocks is specified")
.value_name("SIZE")
)
.arg(Arg::with_name(OPT_FILES).multiple(true).takes_value(true).min_values(1))
.get_matches_from(args);
let files: Vec<String> = matches
.values_of(OPT_FILES)
.map(|v| v.map(ToString::to_string).collect())
.unwrap_or_default();
if files.is_empty() {
show_error!("Missing an argument");
return 1; return 1;
} else { } else {
let no_create = matches.opt_present("no-create"); let no_create = matches.is_present(OPT_NO_CREATE);
let io_blocks = matches.opt_present("io-blocks"); let io_blocks = matches.is_present(OPT_IO_BLOCKS);
let reference = matches.opt_str("reference"); let reference = matches.value_of(OPT_REFERENCE).map(String::from);
let size = matches.opt_str("size"); let size = matches.value_of(OPT_SIZE).map(String::from);
if reference.is_none() && size.is_none() { if reference.is_none() && size.is_none() {
crash!(1, "you must specify either --reference or --size"); crash!(1, "you must specify either --reference or --size");
} else { } else {
match truncate(no_create, io_blocks, reference, size, matches.free) { match truncate(no_create, io_blocks, reference, size, files) {
Ok(()) => ( /* pass */ ), Ok(()) => ( /* pass */ ),
Err(_) => return 1, Err(_) => return 1,
} }