spark.fish

Sparklines for Fish.

Unofficial port of spark.sh with --min, --max flags and improved performance.

Installation

Install with Fisher:

fisher install jorgebucaran/spark.fish

Quickstart

You want to visualize a range of numbers right in your terminal.

$ spark 1 2 4 8
▁▂▄█

And here is a sequence of random numbers.

$ seq 64 | sort --random-sort | spark
▅▄▂▇▂▅▆▄▃█▂▅▄▁▆▆▃█▄▁▇▅▂▃▇▃▃▄▇▄▅▆▇▂▅▁▇▁▄▂▆▅▃█▇▆▆▅▆▃▄▄▇▃▂▇█▅▃█▁▂▂▆

You can set the --min=<number> or --max=<number> values for your sparkline too.

$ seq 10 20 | spark
▁▂▂▃▄▄▅▆▇▇█
$ seq 10 20 | spark --min=0
▄▅▅▆▆▆▇▇▇██
$ seq 10 20 | spark --min=0 --max=30
▃▄▄▄▄▄▅▅▅▅▆

Wicked Cool Usage

Most of the examples in this section are derived from the original Wicked Cool Usage wiki, ported to Fish.

Line lengths.

$ awk \$0=length (functions --details spark) | spark
▃▆▃▃▃▄▃▂▄▄▄▅▂▄▅▂▆▁▅▂▅▅▃▂▂▆▃█▂▁▁▁

Number of commits in a repo, by author.

$ git shortlog --summary | string match --regex "\d+" | spark
█▁▁▁▃▁▁▄▁▁▁

Total run time of processes.

$ ps -A | string replace --filter --regex -- ".*(\d+):(\d+).*" "\$1 * 3600 + \$2 * 60" | bc | spark
▇▁▂▁▆▁▂▂▁▃▁▃▁▁▁▆▁▁▁▂▁▃▂▁▁▃▁▁▁▁▁▂▁▁▂▁▁▁▁▁▆▂▃▂▁▂▃▁▆▁▁▁▂▁▁▁▁▃▂▂▁▇▁▁▁▁▆

LOC added per commit over the last week.

$ git diff @~7 --numstat | string replace --regex -- "(^\d+).*" "\$1" | spark
▁▁▁▁▁▁▁▁▂▁▁▁▁▁▁▂▂▃█▄▁▁

A moving wave through the terminal.

for i in (seq 100)
   for j in (seq (math $COLUMNS - 1))
      math "ceil(6 * cos(($i + $j) * pi / 5))"
   end | spark | read sparks
   echo -n $sparks\r && sleep .1
end

▆▄▂▁▂▄▆▇█▇▆▄▂▁▂▄▆▇█▇▆▄▂▁▂▄▆▇█▇▆▄▂▁▂▄▆▇█▇▆▄▂▁▂▄▆▇█▇▆▄▂▁▂▄▆▇█

Performance

Spark is faster than spark.sh, reading and writing relatively large datasets under milliseconds.

$ time seq 2000 | sort --random-sort | spark
________________________________________________________
Executed in   27.21 millis    fish           external
   usr time   26.40 millis    0.57 millis   25.83 millis
   sys time    4.87 millis    1.58 millis    3.29 millis

$ time seq 2000 | sort --random-sort | spark.sh
________________________________________________________
Executed in    2.73 secs    fish           external
   usr time    2.72 secs    0.33 millis    2.72 secs
   sys time    0.02 secs    1.47 millis    0.02 secs

License

MIT