uucore: Remove crash! macro

src/uu/csplit/src/csplit.rs

@@ -16,7 +16,7 @@ use clap::{crate_version, Arg, ArgAction, ArgMatches, Command};
 use regex::Regex;
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UResult};
-use uucore::{crash_if_err, format_usage, help_about, help_section, help_usage};
+use uucore::{format_usage, help_about, help_section, help_usage};
 
 mod csplit_error;
 mod patterns;
@@ -51,26 +51,23 @@ pub struct CsplitOptions {
 }
 
 impl CsplitOptions {
-    fn new(matches: &ArgMatches) -> Self {
+    fn new(matches: &ArgMatches) -> Result<Self, CsplitError> {
         let keep_files = matches.get_flag(options::KEEP_FILES);
         let quiet = matches.get_flag(options::QUIET);
         let elide_empty_files = matches.get_flag(options::ELIDE_EMPTY_FILES);
         let suppress_matched = matches.get_flag(options::SUPPRESS_MATCHED);
 
-        Self {
-            split_name: crash_if_err!(
-                1,
-                SplitName::new(
-                    matches.get_one::<String>(options::PREFIX).cloned(),
-                    matches.get_one::<String>(options::SUFFIX_FORMAT).cloned(),
-                    matches.get_one::<String>(options::DIGITS).cloned()
-                )
-            ),
+        Ok(Self {
+            split_name: SplitName::new(
+                matches.get_one::<String>(options::PREFIX).cloned(),
+                matches.get_one::<String>(options::SUFFIX_FORMAT).cloned(),
+                matches.get_one::<String>(options::DIGITS).cloned(),
+            )?,
             keep_files,
             quiet,
             elide_empty_files,
             suppress_matched,
-        }
+        })
     }
 }
 
@@ -561,7 +558,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         .unwrap()
         .map(|s| s.to_string())
         .collect();
-    let options = CsplitOptions::new(&matches);
+    let options = CsplitOptions::new(&matches)?;
     if file_name == "-" {
         let stdin = io::stdin();
         Ok(csplit(&options, &patterns, stdin.lock())?)

src/uu/join/src/join.rs

@@ -20,7 +20,7 @@ use std::os::unix::ffi::OsStrExt;
 use uucore::display::Quotable;
 use uucore::error::{set_exit_code, FromIo, UError, UResult, USimpleError};
 use uucore::line_ending::LineEnding;
-use uucore::{crash_if_err, format_usage, help_about, help_usage};
+use uucore::{format_usage, help_about, help_usage};
 
 const ABOUT: &str = help_about!("join.md");
 const USAGE: &str = help_usage!("join.md");
@@ -587,15 +587,19 @@ impl<'a> State<'a> {
         !self.seq.is_empty()
     }
 
-    fn initialize<Sep: Separator>(&mut self, read_sep: &Sep, autoformat: bool) -> usize {
-        if let Some(line) = crash_if_err!(1, self.read_line(read_sep)) {
+    fn initialize<Sep: Separator>(
+        &mut self,
+        read_sep: &Sep,
+        autoformat: bool,
+    ) -> std::io::Result<usize> {
+        if let Some(line) = self.read_line(read_sep)? {
             self.seq.push(line);
 
             if autoformat {
-                return self.seq[0].field_ranges.len();
+                return Ok(self.seq[0].field_ranges.len());
             }
         }
-        0
+        Ok(0)
     }
 
     fn finalize<Sep: Separator>(
@@ -1008,20 +1012,21 @@ fn exec<Sep: Separator>(file1: &str, file2: &str, settings: Settings, sep: Sep)
 
     let format = if settings.autoformat {
         let mut format = vec![Spec::Key];
-        let mut initialize = |state: &mut State| {
-            let max_fields = state.initialize(&sep, settings.autoformat);
+        let mut initialize = |state: &mut State| -> UResult<()> {
+            let max_fields = state.initialize(&sep, settings.autoformat)?;
             for i in 0..max_fields {
                 if i != state.key {
                     format.push(Spec::Field(state.file_num, i));
                 }
             }
+            Ok(())
         };
-        initialize(&mut state1);
-        initialize(&mut state2);
+        initialize(&mut state1)?;
+        initialize(&mut state2)?;
         format
     } else {
-        state1.initialize(&sep, settings.autoformat);
-        state2.initialize(&sep, settings.autoformat);
+        state1.initialize(&sep, settings.autoformat)?;
+        state2.initialize(&sep, settings.autoformat)?;
         settings.format
     };
 

src/uu/unexpand/src/unexpand.rs

@@ -16,7 +16,7 @@ use std::str::from_utf8;
 use unicode_width::UnicodeWidthChar;
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UError, UResult, USimpleError};
-use uucore::{crash_if_err, format_usage, help_about, help_usage, show};
+use uucore::{format_usage, help_about, help_usage, show};
 
 const USAGE: &str = help_usage!("unexpand.md");
 const ABOUT: &str = help_about!("unexpand.md");
@@ -244,7 +244,7 @@ fn write_tabs(
     prevtab: bool,
     init: bool,
     amode: bool,
-) {
+) -> UResult<()> {
     // This conditional establishes the following:
     // We never turn a single space before a non-blank into
     // a tab, unless it's at the start of the line.
@@ -255,15 +255,16 @@ fn write_tabs(
                 break;
             }
 
-            crash_if_err!(1, output.write_all(b"\t"));
+            output.write_all(b"\t")?;
             scol += nts;
         }
     }
 
     while col > scol {
-        crash_if_err!(1, output.write_all(b" "));
+        output.write_all(b" ")?;
         scol += 1;
     }
+    Ok(())
 }
 
 #[derive(PartialEq, Eq, Debug)]
@@ -325,7 +326,7 @@ fn unexpand_line(
     options: &Options,
     lastcol: usize,
     ts: &[usize],
-) -> std::io::Result<()> {
+) -> UResult<()> {
     let mut byte = 0; // offset into the buffer
     let mut col = 0; // the current column
     let mut scol = 0; // the start col for the current span, i.e., the already-printed width
@@ -335,7 +336,7 @@ fn unexpand_line(
     while byte < buf.len() {
         // when we have a finite number of columns, never convert past the last column
         if lastcol > 0 && col >= lastcol {
-            write_tabs(output, ts, scol, col, pctype == CharType::Tab, init, true);
+            write_tabs(output, ts, scol, col, pctype == CharType::Tab, init, true)?;
             output.write_all(&buf[byte..])?;
             scol = col;
             break;
@@ -370,7 +371,7 @@ fn unexpand_line(
                     pctype == CharType::Tab,
                     init,
                     options.aflag,
-                );
+                )?;
                 init = false; // no longer at the start of a line
                 col = if ctype == CharType::Other {
                     // use computed width
@@ -391,7 +392,7 @@ fn unexpand_line(
     }
 
     // write out anything remaining
-    write_tabs(output, ts, scol, col, pctype == CharType::Tab, init, true);
+    write_tabs(output, ts, scol, col, pctype == CharType::Tab, init, true)?;
     output.flush()?;
     buf.truncate(0); // clear out the buffer
 

src/uucore/src/lib/features/fsext.rs

@@ -587,7 +587,7 @@ impl FsUsage {
         let mut number_of_free_clusters = 0;
         let mut total_number_of_clusters = 0;
 
-        let success = unsafe {
+        unsafe {
             let path = to_nul_terminated_wide_string(path);
             GetDiskFreeSpaceW(
                 path.as_ptr(),
@@ -595,15 +595,7 @@ impl FsUsage {
                 &mut bytes_per_sector,
                 &mut number_of_free_clusters,
                 &mut total_number_of_clusters,
-            )
-        };
-        if 0 == success {
-            // Fails in case of CD for example
-            // crash!(
-            //     EXIT_ERR,
-            //     "GetDiskFreeSpaceW failed: {}",
-            //     IOError::last_os_error()
-            // );
+            );
         }
 
         let bytes_per_cluster = sectors_per_cluster as u64 * bytes_per_sector as u64;

src/uucore/src/lib/lib.rs

@@ -380,7 +380,10 @@ macro_rules! prompt_yes(
         eprint!("{}: ", uucore::util_name());
         eprint!($($args)+);
         eprint!(" ");
-        uucore::crash_if_err!(1, std::io::stderr().flush());
+        let res = std::io::stderr().flush().map_err(|err| {
+            $crate::error::USimpleError::new(1, err.to_string())
+        });
+        uucore::show_if_err!(res);
         uucore::read_yes()
     })
 );

src/uucore/src/lib/macros.rs

@@ -30,8 +30,6 @@
 //!     [`crate::show_if_err!`]
 //!   - From custom messages: [`crate::show_error!`]
 //! - Print warnings: [`crate::show_warning!`]
-//! - Terminate util execution
-//!   - Crash program: [`crate::crash!`], [`crate::crash_if_err!`]
 
 // spell-checker:ignore sourcepath targetpath rustdoc
 
@@ -189,57 +187,3 @@ macro_rules! show_warning_caps(
         eprintln!($($args)+);
     })
 );
-
-/// Display an error and [`std::process::exit`]
-///
-/// Displays the provided error message using [`show_error!`], then invokes
-/// [`std::process::exit`] with the provided exit code.
-///
-/// # Examples
-///
-/// ```should_panic
-/// # #[macro_use]
-/// # extern crate uucore;
-/// # fn main() {
-/// // outputs <name>: Couldn't apply foo to bar
-/// // and terminates execution
-/// crash!(1, "Couldn't apply {} to {}", "foo", "bar");
-/// # }
-/// ```
-#[macro_export]
-macro_rules! crash(
-    ($exit_code:expr, $($args:tt)+) => ({
-        $crate::show_error!($($args)+);
-        std::process::exit($exit_code);
-    })
-);
-
-/// Unwrap a [`std::result::Result`], crashing instead of panicking.
-///
-/// If the result is an `Ok`-variant, returns the value contained inside. If it
-/// is an `Err`-variant, invokes [`crash!`] with the formatted error instead.
-///
-/// # Examples
-///
-/// ```should_panic
-/// # #[macro_use]
-/// # extern crate uucore;
-/// # fn main() {
-/// let is_ok: Result<u32, &str> = Ok(1);
-/// // Does nothing
-/// crash_if_err!(1, is_ok);
-///
-/// let is_err: Result<u32, &str> = Err("This didn't work...");
-/// // Calls `crash!`
-/// crash_if_err!(1, is_err);
-/// # }
-/// ```
-#[macro_export]
-macro_rules! crash_if_err(
-    ($exit_code:expr, $exp:expr) => (
-        match $exp {
-            Ok(m) => m,
-            Err(f) => $crate::crash!($exit_code, "{}", f),
-        }
-    )
-);