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Code Issues Activity

comm: handle final lines without \n

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This commit is contained in:
Michael Gehring 2014-06-03 11:59:57 +02:00
parent e932af9795
commit ecddbf22ca
1 changed files with 10 additions and 3 deletions
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13
comm/comm.rs
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@ -38,6 +38,13 @@ fn mkdelim(col: uint, opts: &getopts::Matches) -> String {
s
}
fn ensure_nl(line: String) -> String {
match line.as_slice().chars().last() {
Some('\n') => line,
_ => line.append("\n"),
}
}
fn comm(a: &mut Box<Buffer>, b: &mut Box<Buffer>, opts: &getopts::Matches) {
let delim = Vec::from_fn(4, |col| mkdelim(col, opts));
@ -56,19 +63,19 @@ fn comm(a: &mut Box<Buffer>, b: &mut Box<Buffer>, opts: &getopts::Matches) {
match ord {
Less => {
if !opts.opt_present("1") {
print!("{}{}", delim.get(1), ra.unwrap());
print!("{}{}", delim.get(1), ra.map(ensure_nl).unwrap());
}
ra = a.read_line();
}
Greater => {
if !opts.opt_present("2") {
print!("{}{}", delim.get(2), rb.unwrap());
print!("{}{}", delim.get(2), rb.map(ensure_nl).unwrap());
}
rb = b.read_line();
}
Equal => {
if !opts.opt_present("3") {
print!("{}{}", delim.get(3), ra.unwrap());
print!("{}{}", delim.get(3), ra.map(ensure_nl).unwrap());
}
ra = a.read_line();
rb = b.read_line();