wc implemented in Rust as part of reading command line rust book. This repo uses the latest version of clap which has quite a different API compared to the API used in the book.
This program supports the following capabilities:
wcr 1.0.0
sanjayts
USAGE:
wcr [OPTIONS] [FILE]...
ARGS:
<FILE>... Input files [default: -]
OPTIONS:
-c, --bytes print the byte counts
-h, --help Print help information
-l, --lines print the newline counts
-m, --chars print the character counts
-V, --version Print version information
-w, --words print the word countsTo squash corner case bugs related to formatting, I used the od tool. An example below:
# Reference output
>> cat tests/expected/atlamal.txt.stdin.out | od -ac
0000000 sp sp sp sp sp sp sp 4 sp sp sp sp sp sp 2 9
4 2 9
0000020 sp sp sp sp sp 1 7 7 nl
1 7 7 \n
0000031
# My output
>> cargo run -- < tests/inputs/atlamal.txt | od -ac
0000000 sp sp sp sp sp sp sp 4 sp sp sp sp sp sp 2 9
4 2 9
0000020 sp sp sp sp sp 1 7 7 sp nl
1 7 7 \n
0000032Have you noticed the extra space at the end? :)
- Add support for grapheme count instead of simple char counts
- Support
--max-line-lengthand--files0-from=FILE - Use criterion to generate perf benchmarks for large files/lines