1. #!/bin/bash
2. # statistical: gernerate easy statistical informations in bash
3. # Copyright: (C) 2011 Florian Baumann <flo@noqqe.de>
4. # License: GPL-3 <http://www.gnu.org/licenses/gpl-3.0.txt>
5. # Date: Tuesday 2011-04-12
6.  
7. ### Locales
8. SUM="$*"        # see all key value pairs
9. OUTPUTCHAR='#'  # configure this to your favorite ascii char
10. BORDERCHAR='|'  # configure this to your favorite ascii char
11. BIGKEY=0        # usually you dont have to touch this
12.  
13. # Read from stdin hack
14. if [ -z "$*" ]; then
15.     SUM=$(cat /dev/stdin)
16. fi
17.    
18. ### Scaling and environment analysis for optimal output on
19. # the most terminals
20. for data in $SUM; do
21.  
22.     # Getting informations from parameters
23.     KEY=${data%%:*}
24.     VALUE=${data##*:}
25.  
26.     # Fishing errors from wrong usage
27.     if [[ ! $VALUE =~ ^[[:digit:]]+$ ]]; then
28.         echo "ERROR: Do not use characters as value! Key:$KEY Value:$VALUE"
29.         exit 1
30.     fi
31.  
32.     # Bash couldn't handle values with more than 19 numbers
33.     # Values longer than 19 will be transformed into strings.
34.     # String could not be graphed :)
35.     if [[ ${#VALUE} -gt 19 ]]; then
36.         echo "Error: Bash couldn't handle values with more than 19 numbers. Sorry."
37.         exit 1
38.     fi
39.  
40.     # Doing the right formatting for a global
41.     # tabulator spaces work
42.     if [ ${#KEY} -gt 23 ]; then
43.         BIGKEY=3
44.     elif [ ${#KEY} -gt 15 ]; then
45.         BIGKEY=2
46.     elif [ ${#KEY} -gt 7 ]; then
47.         BIGKEY=1
48.     fi
49.  
50.     # Fishing the biggest value
51.     (( VALUE > MAXVALUE )) && MAXVALUE=$VALUE
52.  
53. done
54.  
55. # Creating the right factor to fit the bars up to your terminal
56. FACTORCOUNT=0
57. FACTOR=1
58. while [ ${FACTORCOUNT} -lt $(( ${#MAXVALUE} - 2 )) ]; do
59.     FACTOR="${FACTOR}0"
60.     ((FACTORCOUNT++))
61. done
62.  
63. # Start graphing
64. for data in $SUM; do
65.  
66.     KEY=${data%%:*}
67.     VALUE=${data##*:}
68.     REAL_VALUE="$VALUE"
69.     COUNTER="0"
70.    
71.     # Do value scaling action for terminal
72.     VALUE=$(($VALUE / $FACTOR))
73.    
74.     # Do key scaling action for terminal
75.     if [ ${#KEY} -ge 23 ]; then
76.         KEY=${KEY:0:22}
77.     fi
78.  
79.     # Formatting the keys for your graph
80.     if [ $BIGKEY -eq 3 -a ${#KEY} -lt 8 ]; then
81.         echo -n -e "${KEY}\t\t\t\t"
82.     elif [ $BIGKEY -eq 3 -a ${#KEY} -lt 15 ]; then
83.         echo -n -e "${KEY}\t\t\t"
84.     elif [ $BIGKEY -eq 3 -a ${#KEY} -lt 23 ]; then
85.         echo -n -e "${KEY}\t\t"
86.     elif [ $BIGKEY -eq 2 -a ${#KEY} -lt 8 ]; then
87.         echo -n -e "${KEY}\t\t\t"
88.     elif [ $BIGKEY -eq 2 -a ${#KEY} -lt 15 ]; then
89.         echo -n -e "${KEY}\t\t"
90.     elif [ $BIGKEY -eq 1 -a ${#KEY} -lt 8 ]; then
91.         echo -n -e "${KEY}\t\t"
92.     else
93.         echo -n -e "${KEY}\t"
94.     fi
95.  
96.     # Putting the choosen char for border
97.     echo -n "$BORDERCHAR"
98.  
99.     # Putting a output char for each (scaled) value
100.     # If the last char was written, write the real value
101.     while [ $COUNTER -le $VALUE ]; do
102.        
103.         ((COUNTER++))
104.        
105.         if [ $COUNTER -gt $VALUE ]; then
106.             echo -n " ($REAL_VALUE)" ; echo
107.         else
108.             echo -n "$OUTPUTCHAR"
109.         fi
110.  
111.     done
112. done