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Draws squares in Bash
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| #!/bin/bash | |
| function internal_rtfm { | |
| echo "Draw squares in bash, with different sides and corners" | |
| echo "Usage: $0 x y z" | |
| echo " x - size of the square to draw" | |
| echo " y - character for sides" | |
| echo " z - character for corners" | |
| exit | |
| } | |
| function fill_middle { | |
| for((Y=2; Y < SIDE_LENGTH; Y++)); do | |
| printf "$1" | |
| done | |
| } | |
| function draw_top { | |
| printf "$CORNER_SIGN" | |
| fill_middle "$SIDE_SIGN" | |
| echo "$CORNER_SIGN" | |
| } | |
| function draw_middle { | |
| for((X=2; X < SIDE_LENGTH; X++)); do | |
| printf "$SIDE_SIGN" | |
| fill_middle " " | |
| echo "$SIDE_SIGN" | |
| done | |
| } | |
| if [ "$#" -lt "3" ]; then | |
| internal_rtfm | |
| fi | |
| SIDE_LENGTH=$1 | |
| SIDE_SIGN=$2 | |
| CORNER_SIGN=$3 | |
| if [ "$SIDE_LENGTH" -le "0" ]; then | |
| echo "Side length must be a natural number" | |
| internal_rtfm | |
| elif [ "$SIDE_LENGTH" -eq "1" ]; then | |
| echo $CORNER_SIGN | |
| exit | |
| fi | |
| draw_top | |
| draw_middle | |
| draw_top |
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