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Diffstat (limited to '.local/bin/spark')
-rwxr-xr-x | .local/bin/spark | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/.local/bin/spark b/.local/bin/spark new file mode 100755 index 0000000..53a38be --- /dev/null +++ b/.local/bin/spark | |||
@@ -0,0 +1,103 @@ | |||
1 | #!/usr/bin/env bash | ||
2 | # | ||
3 | # spark | ||
4 | # https://github.com/holman/spark | ||
5 | # | ||
6 | # Generates sparklines for a set of data. | ||
7 | # | ||
8 | # Here's a good web-based sparkline generator that was a bit of inspiration | ||
9 | # for spark: | ||
10 | # | ||
11 | # https://datacollective.org/sparkblocks | ||
12 | # | ||
13 | # spark takes a comma-separated or space-separated list of data and then prints | ||
14 | # a sparkline out of it. | ||
15 | # | ||
16 | # Examples: | ||
17 | # | ||
18 | # spark 1 5 22 13 53 | ||
19 | # # => ▁▁▃▂▇ | ||
20 | # | ||
21 | # spark 0 30 55 80 33 150 | ||
22 | # # => ▁▂▃▅▂▇ | ||
23 | # | ||
24 | # spark -h | ||
25 | # # => Prints the spark help text. | ||
26 | |||
27 | # Generates sparklines. | ||
28 | # | ||
29 | # $1 - The data we'd like to graph. | ||
30 | _echo() | ||
31 | { | ||
32 | if [ "X$1" = "X-n" ]; then | ||
33 | shift | ||
34 | printf "%s" "$*" | ||
35 | else | ||
36 | printf "%s\n" "$*" | ||
37 | fi | ||
38 | } | ||
39 | |||
40 | spark() | ||
41 | { | ||
42 | local n numbers= | ||
43 | |||
44 | # find min/max values | ||
45 | local min=0xffffffff max=0 | ||
46 | |||
47 | for n in ${@//,/ } | ||
48 | do | ||
49 | # on Linux (or with bash4) we could use `printf %.0f $n` here to | ||
50 | # round the number but that doesn't work on OS X (bash3) nor does | ||
51 | # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off | ||
52 | n=${n%.*} | ||
53 | (( n < min )) && min=$n | ||
54 | (( n > max )) && max=$n | ||
55 | numbers=$numbers${numbers:+ }$n | ||
56 | done | ||
57 | |||
58 | # print ticks | ||
59 | local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █) | ||
60 | |||
61 | # use a high tick if data is constant | ||
62 | (( min == max )) && ticks=(▅ ▆) | ||
63 | |||
64 | local f=$(( (($max-$min)<<8)/(${#ticks[@]}-1) )) | ||
65 | (( f < 1 )) && f=1 | ||
66 | |||
67 | for n in $numbers | ||
68 | do | ||
69 | _echo -n ${ticks[$(( ((($n-$min)<<8)/$f) ))]} | ||
70 | done | ||
71 | _echo | ||
72 | } | ||
73 | |||
74 | # If we're being sourced, don't worry about such things | ||
75 | if [ "$BASH_SOURCE" == "$0" ]; then | ||
76 | # Prints the help text for spark. | ||
77 | help() | ||
78 | { | ||
79 | local spark=$(basename $0) | ||
80 | cat <<EOF | ||
81 | |||
82 | USAGE: | ||
83 | $spark [-h|--help] VALUE,... | ||
84 | |||
85 | EXAMPLES: | ||
86 | $spark 1 5 22 13 53 | ||
87 | ▁▁▃▂█ | ||
88 | $spark 0,30,55,80,33,150 | ||
89 | ▁▂▃▄▂█ | ||
90 | echo 9 13 5 17 1 | $spark | ||
91 | ▄▆▂█▁ | ||
92 | EOF | ||
93 | } | ||
94 | |||
95 | # show help for no arguments if stdin is a terminal | ||
96 | if { [ -z "$1" ] && [ -t 0 ] ; } || [ "$1" == '-h' ] || [ "$1" == '--help' ] | ||
97 | then | ||
98 | help | ||
99 | exit 0 | ||
100 | fi | ||
101 | |||
102 | spark ${@:-`cat`} | ||
103 | fi | ||