90 lines
1.7 KiB
Text
90 lines
1.7 KiB
Text
|
#!/usr/bin/env bash
|
||
|
|
#
|
||
|
|
# spark
|
||
|
|
# https://github.com/holman/spark
|
||
|
|
#
|
||
|
|
# Generates sparklines for a set of data.
|
||
|
|
#
|
||
|
|
# Here's a a good web-based sparkline generator that was a bit of inspiration
|
||
|
|
# for spark:
|
||
|
|
#
|
||
|
|
# https://datacollective.org/sparkblocks
|
||
|
|
#
|
||
|
|
# spark takes a comma-separated list of data and then prints a sparkline out of
|
||
|
|
# it.
|
||
|
|
#
|
||
|
|
# Examples:
|
||
|
|
#
|
||
|
|
# spark 1 5 22 13 53
|
||
|
|
# # => ▁▁▃▂▇
|
||
|
|
#
|
||
|
|
# spark 0 30 55 80 33 150
|
||
|
|
# # => ▁▂▃▅▂▇
|
||
|
|
#
|
||
|
|
# spark -h
|
||
|
|
# # => Prints the spark help text.
|
||
|
|
|
||
|
|
# Generates sparklines.
|
||
|
|
#
|
||
|
|
# $1 - The data we'd like to graph.
|
||
|
|
spark()
|
||
|
|
{
|
||
|
|
local n numbers=
|
||
|
|
|
||
|
|
# find min/max values
|
||
|
|
local min=0xffffffff max=0
|
||
|
|
|
||
|
|
for n in ${@//,/ }
|
||
|
|
do
|
||
|
|
# on Linux (or with bash4) we could use `printf %.0f $n` here to
|
||
|
|
# round the number but that doesn't work on OS X (bash3) nor does
|
||
|
|
# `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
|
||
|
|
n=${n%.*}
|
||
|
|
(( n < min )) && min=$n
|
||
|
|
(( n > max )) && max=$n
|
||
|
|
numbers=$numbers${numbers:+ }$n
|
||
|
|
done
|
||
|
|
|
||
|
|
# print ticks
|
||
|
|
local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
|
||
|
|
|
||
|
|
local f=$(( (($max-$min)<<8)/(${#ticks[@]}-1) ))
|
||
|
|
(( f < 1 )) && f=1
|
||
|
|
|
||
|
|
for n in $numbers
|
||
|
|
do
|
||
|
|
echo -n ${ticks[$(( ((($n-$min)<<8)/$f) ))]}
|
||
|
|
done
|
||
|
|
echo
|
||
|
|
}
|
||
|
|
|
||
|
|
# If we're being sourced, don't worry about such things
|
||
|
|
if [ "$BASH_SOURCE" == "$0" ]; then
|
||
|
|
# Prints the help text for spark.
|
||
|
|
help()
|
||
|
|
{
|
||
|
|
cat <<EOF
|
||
|
|
|
||
|
|
USAGE:
|
||
|
|
spark [-h] VALUE,...
|
||
|
|
|
||
|
|
EXAMPLES:
|
||
|
|
spark 1 5 22 13 53
|
||
|
|
▁▁▃▂█
|
||
|
|
spark 0,30,55,80,33,150
|
||
|
|
▁▂▃▄▂█
|
||
|
|
echo 9 13 5 17 1 | spark
|
||
|
|
▄▆▂█▁
|
||
|
|
EOF
|
||
|
|
}
|
||
|
|
|
||
|
|
# show help for no arguments if stdin is a terminal
|
||
|
|
if { [ -z "$1" ] && [ -t 0 ] ; } || [ "$1" == '-h' ]
|
||
|
|
then
|
||
|
|
help
|
||
|
|
exit 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
spark ${@:-`cat`}
|
||
|
|
fi
|