RGBCube/uutils-coreutils
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truncate: return UResult from uumain() function

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This commit is contained in:
Jeffrey Finkelstein 2021-12-31 14:50:52 -05:00
parent cb051e7416
commit c23a844c1e
1 changed files with 14 additions and 13 deletions
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27
src/uu/truncate/src/truncate.rs
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@ -16,6 +16,7 @@ use std::fs::{metadata, OpenOptions};
use std::io::ErrorKind; use std::io::ErrorKind;
use std::path::Path; use std::path::Path;
use uucore::display::Quotable; use uucore::display::Quotable;
use uucore::error::{UIoError, UResult, USimpleError, UUsageError};
use uucore::parse_size::{parse_size, ParseSizeError}; use uucore::parse_size::{parse_size, ParseSizeError};
#[derive(Debug, Eq, PartialEq)] #[derive(Debug, Eq, PartialEq)]
@ -90,7 +91,8 @@ fn get_long_usage() -> String {
) )
} }
pub fn uumain(args: impl uucore::Args) -> i32 { #[uucore_procs::gen_uumain]
pub fn uumain(args: impl uucore::Args) -> UResult<()> {
let usage = usage(); let usage = usage();
let long_usage = get_long_usage(); let long_usage = get_long_usage();
@ -105,32 +107,31 @@ pub fn uumain(args: impl uucore::Args) -> i32 {
.unwrap_or_default(); .unwrap_or_default();
if files.is_empty() { if files.is_empty() {
show_error!("Missing an argument"); return Err(UUsageError::new(1, "missing file operand"));
return 1;
} else { } else {
let io_blocks = matches.is_present(options::IO_BLOCKS); let io_blocks = matches.is_present(options::IO_BLOCKS);
let no_create = matches.is_present(options::NO_CREATE); let no_create = matches.is_present(options::NO_CREATE);
let reference = matches.value_of(options::REFERENCE).map(String::from); let reference = matches.value_of(options::REFERENCE).map(String::from);
let size = matches.value_of(options::SIZE).map(String::from); let size = matches.value_of(options::SIZE).map(String::from);
if let Err(e) = truncate(no_create, io_blocks, reference, size, files) { truncate(no_create, io_blocks, reference, size, files).map_err(|e| {
match e.kind() { match e.kind() {
ErrorKind::NotFound => { ErrorKind::NotFound => {
// TODO Improve error-handling so that the error // TODO Improve error-handling so that the error
// returned by `truncate()` provides the necessary // returned by `truncate()` provides the necessary
// parameter for formatting the error message. // parameter for formatting the error message.
let reference = matches.value_of(options::REFERENCE).map(String::from); let reference = matches.value_of(options::REFERENCE).map(String::from);
crash!( USimpleError::new(
1, 1,
"cannot stat {}: No such file or directory", format!(
reference.as_deref().unwrap_or("").quote() "cannot stat {}: No such file or directory",
); // TODO: fix '--no-create' see test_reference and test_truncate_bytes_size reference.as_deref().unwrap_or("").quote()
),
) // TODO: fix '--no-create' see test_reference and test_truncate_bytes_size
} }
_ => crash!(1, "{}", e.to_string()), _ => uio_error!(e, ""),
} }
} })
} }
0
} }
pub fn uu_app() -> App<'static, 'static> { pub fn uu_app() -> App<'static, 'static> {
@ -303,7 +304,7 @@ fn truncate(
} }
(Some(rfilename), None) => truncate_reference_file_only(&rfilename, filenames, create), (Some(rfilename), None) => truncate_reference_file_only(&rfilename, filenames, create),
(None, Some(size_string)) => truncate_size_only(&size_string, filenames, create), (None, Some(size_string)) => truncate_size_only(&size_string, filenames, create),
(None, None) => crash!(1, "you must specify either --reference or --size"), // this case cannot happen anymore because it's handled by clap (None, None) => unreachable!(), // this case cannot happen anymore because it's handled by clap
} }
} }