English | 日本語

🍡 dango

🍡dango is a program that concatenates and splits standard input.

Description

dango concatenates and splits the standard input.

dango concatenates and splits standard input by bytes, characters, words, or line breaks. dango reads the standard input and whenever it reads a specified number of elements, it puts them on a line and prints them to the standard output.

Usage

$ cat << EOF | dango
━
🟠
🟡
🟢
━
EOF
━🟠🟡🟢━

Concatenate or split by number of bytes.

$ echo 'dango' | dango -b -n 1
d
a
n
g
o

$ echo 'dango' | dango -b -n 3
dan
go

Concatenate or split by number of characters.

$ echo '━🟠🟡🟢━' | dango -c -n 1
━
🟠
🟡
🟢
━

$ echo '━🟠🟡🟢━' | dango -c -n 3
━🟠🟡
🟢━

Concatenate or split by word count.

$ echo 'Dango is a program that concatenates and splits standard input.' | dango -w -n 2 -d ' '
Dango is
a program
that concatenates
and splits
standard input.

Concatenate or split by the number of line breaks.

$ seq 1 4 | dango -l -n 2
12
34

$ seq 1 4 | dango -l
1234

Specify a delimiter to concatenate or split.

$ echo 'dango' | dango -c -d '-'
d-a-n-g-o

$ seq 1 4 | dango -l -d ' '
1 2 3 4

Show help.

$ dango -help
# ...

Or, you can use Docker.

$ cat << EOF | docker container run --rm -i ebc2in2crc/dango
━
🟠
🟡
🟢
━
EOF
━🟠🟡🟢━

Installation

Developer

Go 1.16 or later.

$ go install github.com/ebc-2in2crc/dango@latest

Go 1.15.

$ go get github.com/ebc-2in2crc/dango/...

User

Download from the following url.

• https://github.com/ebc-2in2crc/dango/releases

Or, you can use Homebrew (Only macOS).

$ brew tap ebc-2in2crc/tap
$ brew install dango

Or, you can use Docker.

$ docker image pull ebc2in2crc/dango

🍡dango vs. Other tools

dango -l vs. tr

$ seq 1 4 | dango -l
1234

$ seq 1 4 | tr -d '\n'
1234

dango -w vs. xargs

$ seq -s ' ' 1 4
1 2 3 4

$ seq -s ' ' 1 4 | dango -w -n 2 -d ' '
1 2
3 4

$ seq -s ' ' 1 4 | xargs -n2
1 2
3 4

dango -c vs. fold

$ seq -s '' 1 4 | dango -c -n 2
12
34

$ seq -s '' 1 4 | fold -w 2
12
34

dango -b vs. fold

$ seq -s '\t' 1 4 | dango -b -n 3
1	2
	3
4

$ seq -s '\t' 1 4 | fold -b -w 3
1	2
	3
4

Contribution

1. Fork this repository
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Rebase your local changes against the master branch
5. Run test suite with the make test command and confirm that it passes
6. Run make fmt
7. Create new Pull Request

License

MIT

Author

ebc-2in2crc