tuc (when cut doesn't cut it)

We've all been there. You want to cut some string on a delimiter repeated in a non-deterministic way. Maybe you even want to use negative indexes or replace the delimiters in the cut part with something else... That's where tuc can help.

Install

Download one of the prebuilt binaries

or run

cargo install tuc

Help

``` tuc 0.9.0 [UNRELEASED] When cut doesn't cut it.

USAGE: tuc [FLAGS] [OPTIONS]

FLAGS: -g, --greedy-delimiter Split fields using a greedy delimiter -p, --compress-delimiter Collapse any sequence of delimiters -s, --only-delimited Do not print lines not containing delimiters -V, --version Prints version information -z, --zero-terminated line delimiter is NUL (\0), not LF (\n) -h, --help Prints this help and exit -m, --complement keep the opposite fields than the one selected -j, --join write the delimiter between fields

OPTIONS: -f, --fields Fields to keep, 1-indexed, comma separated. Use colon to include everything in a range. [default 1:]

                              e.g. cutting on '-' the string 'a-b-c-d'
                                1     => a
                                1:    => a-b-c-d
                                1:3   => a-b-c
                                3,2   => cb
                                3,1:2 => ca-b
                                -3:-2 => b-c

                              To re-add the delimiter check -j, to replace
                              it check -r.

                              You can also format the output using {} syntax
                              e.g.
                              '["{1}", "{2}", "{3}"]' => ["a", "b", "c"]

                              You can escape { and } using {{ and }}.

-b, --bytes <bounds>          Same as --fields, but it keeps bytes
-c, --characters <bounds>     Same as --fields, but it keeps characters
-l, --lines <bounds>          Same as --fields, but it keeps lines
-d, --delimiter <delimiter>   Delimiter used by -f to cut the text
                              [default: \t]
-r, --replace-delimiter <s>   Replace the delimiter with the provided text
-t, --trim <trim>             Trim the delimiter. Valid trim values are
                              (l|L)eft, (r|R)ight, (b|B)oth

Notes: --trim and --compress-delimiter are applied before --fields --lines does not load the whole input in memory if the fields are ordered and non-negative (e.g. -l 1,3:4,4,7) and options -p/-m have not been set ```

Examples

```sh

Cut and rearrange fields

❯ echo "foo bar baz" | tuc -d ' ' -f 3,2,1 bazbarfoo ```

```sh

Keep ranges

❯ echo "foo bar baz" | tuc -d ' ' -f 2: bar baz ```

```sh

Cut using a greedy delimiter

❯ echo "foo bar" | tuc -g -d ' ' -f 1,2 foobar ```

```sh

Format output

❯ echo "foo bar baz" | tuc -d ' ' -f '{1}, {2} and lastly {3}' foo, bar and lastly baz

Support \n

❯ echo "100Kb README.txt 2049-02-01" | tuc -d ' ' -f '{2}\n├── {1}\n└── {3}' README.txt ├── 100Kb └── 2049-02-01 ```

```sh

Compress delimiters after cut

❯ echo "foo bar baz" | tuc -d ' ' -f 2: -p bar baz ```

```sh

Replace remaining delimiters with something else

❯ echo "foo bar baz" | tuc -d ' ' -f 2: -p -r ' -> ' bar -> baz ```

```sh

Indexes can be negative and rearranged

❯ echo "a b c" | tuc -d ' ' -f -1,-2,-3 cba ```

```sh

Delimiters can be any number of characters long

❯ echo "abc" | tuc -d '' -f 1,3 ac ```

```sh

Can split on unicode scalar values (it expects UTF-8 encoding)

❯ echo "a𝌆b𝌆c" | tuc -d '𝌆' -f 1,3 ac ```

```sh

Can split on characters

❯ echo "😁🤩😝😎" | tuc -c 4,3,2,1 😎😝🤩😁 ```

```sh

Can split on bytes (the following emoji are 4 bytes each)

❯ echo "😁🤩😝😎" | tuc -b 5:8 🤩 ```

```sh

Can keep the opposite fields

echo "a b c" | tuc --complement -d ' ' -f 2 ac ```

LICENSE

Tuc is distributed under the GNU GPL license (version 3 or any later version).

See LICENSE file for details.