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split: implement --line-bytes option

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Implement the `--line-bytes` option to `split`. In this mode, the
program tries to write as many lines of the input as possible to each
chunk of output without exceeding a specified byte limit. The new
`LineBytesChunkWriter` struct represents this functionality.
This commit is contained in:
Jeffrey Finkelstein 2022-01-01 23:53:29 -05:00
parent 2e8945ba7f
commit 77d92883c7
3 changed files with 218 additions and 3 deletions
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12
tests/by-util/test_split.rs
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@ -2,7 +2,7 @@
// *
// * For the full copyright and license information, please view the LICENSE
// * file that was distributed with this source code.
// spell-checker:ignore xzaaa sixhundredfiftyonebytes ninetyonebytes threebytes asciilowercase fghij klmno pqrst uvwxyz fivelines twohundredfortyonebytes onehundredlines
// spell-checker:ignore xzaaa sixhundredfiftyonebytes ninetyonebytes threebytes asciilowercase fghij klmno pqrst uvwxyz fivelines twohundredfortyonebytes onehundredlines nbbbb
extern crate rand;
extern crate regex;
@ -595,3 +595,13 @@ fn test_lines_kth() {
.succeeds()
.stdout_only("20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n");
}
#[test]
fn test_line_bytes() {
let (at, mut ucmd) = at_and_ucmd!();
ucmd.args(&["-C", "8", "letters.txt"]).succeeds();
assert_eq!(at.read("xaa"), "aaaaaaaa");
assert_eq!(at.read("xab"), "a\nbbbb\n");
assert_eq!(at.read("xac"), "cccc\ndd\n");
assert_eq!(at.read("xad"), "ee\n");
}