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wc: Optimize, improve correctness

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- Reuse allocations for read lines
- Increase splice size
- Check if /dev/null was opened correctly
- Do not discard read bytes after I/O error
- Add fast line counting with bytecount
This commit is contained in:
Jan Verbeek 2021-08-25 11:24:00 +02:00 • committed by Michael Debertol
parent c756878b20
commit 48437fc49d
6 changed files with 88 additions and 45 deletions
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Cargo.lock generated
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@ -188,6 +188,12 @@ dependencies = [
"utf8-width",
]
[[package]]
name = "bytecount"
version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72feb31ffc86498dacdbd0fcebb56138e7177a8cc5cea4516031d15ae85a742e"
[[package]]
name = "byteorder"
version = "1.4.3"
@ -3110,6 +3116,7 @@ dependencies = [
name = "uu_wc"
version = "0.0.7"
dependencies = [
"bytecount",
"clap",
"libc",
"nix 0.20.0",