├── README
├── LICENSE
└── barchart


/README:
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 1 | BARCHART
 2 | ========
 3 | 
 4 | This program makes bar charts. For example, take this file 'data':
 5 | 
 6 | 33 This is a label
 7 |  0 This is another
 8 | 100
 9 | 80 The line above had no label  
10 | 
11 | Running './barchart -w 80 data' would produce:
12 | 
13 |  33 This is a label             ################
14 |   0 This is another             
15 | 100                             ################################################
16 |  80 The line above had no label #######################################
17 | 
18 | The script should work with any POSIX shell. However, it can only automatically
19 | detect terminal width if the 'size' operand to 'stty' is present and the
20 | controlling terminal is available as '/dev/tty'.
21 | 
22 | This script integrates well into pipelines. For example, this makes a bar chart
23 | of line counts for all source files in 'src':
24 | 
25 | find -L src -type f -exec wc -l {} \; | sort -rn | barchart | less
26 | 


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/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2020 Jude Melton-Houghton
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE. 
22 | 


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/barchart:
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 1 | #!/bin/sh
 2 | 
 3 | char=#
 4 | [ -r /dev/tty ] && cols=$(stty </dev/tty size 2>/dev/null | awk '{print $2}')
 5 | [ -n "$cols" ] || cols=80
 6 | while [ 0 -lt "$#" ]; do
 7 | 	opt="$1"
 8 | 	case "$opt" in
 9 | 	-c)	shift; char="$1" ;;
10 | 	-c*)	char="${1##-c}" ;;
11 | 	-w)	shift; cols="$1" ;;
12 | 	-w*)	cols="${1##-w}" ;;
13 | 	-v)	echo 'barchart version 1.0.5'; exit 0 ;;
14 | 	-h)	cat <<EOT ; exit 0 ;;
15 | Usage: barchart [-w cols] [-c char] [-h] [-v] [--] file...
16 | Makes a bar chart from input files, or standard input if no files are given.
17 | Options:
18 |   -w cols  Force bar chart width to the given columns. Without this, the program
19 |            tries to use the controlling terminal width.
20 |   -c char  Make bars out of the given character.
21 |   -h       Print this help.
22 |   -v       Print version.
23 | Each input line is a non-negative integer followed by an optional label.
24 | EOT
25 | 	--)	shift; break ;;
26 | 	-?*)	echo >&2 "$0: Invalid option: $opt"; exit 1 ;;
27 | 	*)	break ;;
28 | 	esac
29 | 	[ 0 -lt "$#" ] || {
30 | 		echo >&2 "$0: Option $opt requires an argument"
31 | 		exit 1
32 | 	}
33 | 	shift
34 | done
35 | 
36 | exec awk -v char="$char" -v cols="$cols" '
37 | {	count = +$1;
38 | 	$1 = "";
39 | 	label = substr($0, 2);
40 | 	sum += count;
41 | 	if (count > max) max = count;
42 | 	l = length(""count);
43 | 	if (l > countlen) countlen = l;
44 | 	l = length(label);
45 | 	if (l > labellen) labellen = l;
46 | 	counts[+n] = count;
47 | 	labels[+n] = label;
48 | 	++n }
49 | END {	width = cols - countlen - 1 - labellen - 1;
50 | 	for (i = 0; i < +n; ++i) {
51 | 		printf "%"countlen"d %-"labellen"s ", counts[i], labels[i];
52 | 		if (max > width) counts[i] = counts[i] / max * width;
53 | 		while (counts[i]-- > 0) printf "%s", char;
54 | 		printf "\n";
55 | 	} }' "$@"
56 | 


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