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fop(1): fix minor optind bug, add some comments

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This commit is contained in:
dtb 2024-07-29 21:14:45 -06:00
parent fd13a7f189
commit 6bbccb3776
Signed by: trinity
GPG Key ID: 34C0543BBB6AF81B
1 changed files with 8 additions and 7 deletions
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15
src/fop.rs
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@ -33,7 +33,7 @@ use sysexits::{ EX_DATAERR, EX_IOERR, EX_UNAVAILABLE, EX_USAGE };
fn main() { fn main() {
let argv = args().collect::<Vec<String>>(); let argv = args().collect::<Vec<String>>();
let mut d = '\u{1E}'.to_string(); /* ASCII record separator */ let mut d = '\u{1E}'.to_string(); /* ASCII record separator */
let mut optind = 0; let mut optind = 1;
let usage = format!( let usage = format!(
"Usage: {} [-d delimiter] index command [args...]", "Usage: {} [-d delimiter] index command [args...]",
@ -54,6 +54,12 @@ fn main() {
}; };
} }
/* parse the specified index as a number we can use */
let index = argv[optind].parse::<usize>().unwrap_or_else(|e| {
eprintln!("{}: {}: {}", argv[0], argv[1], e);
exit(EX_DATAERR);
});
/* index of the argv[0] for the operator command */ /* index of the argv[0] for the operator command */
let command_arg = optind as usize + 1; let command_arg = optind as usize + 1;
@ -63,12 +69,7 @@ fn main() {
exit(EX_USAGE); exit(EX_USAGE);
}); });
/* parse the specified index as a number we can use */ /* read entire standard input into memory */
let index = argv[optind].parse::<usize>().unwrap_or_else(|e| {
eprintln!("{}: {}: {}", argv[0], argv[1], e);
exit(EX_DATAERR);
});
let mut buf = String::new(); let mut buf = String::new();
if let Err(e) = stdin().read_to_string(&mut buf) { if let Err(e) = stdin().read_to_string(&mut buf) {
eprintln!("{}: {}", argv[0], e.strerror()); eprintln!("{}: {}", argv[0], e.strerror());