70 lines
2.0 KiB
Bash
70 lines
2.0 KiB
Bash
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#=== FUNCTION ================================================================
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# NAME: pad
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# DESCRIPTION: Pad $text on the $side with $char characters to length $length
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# PARAMETERS: 1 - the text string to pad (no default)
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# 2 - how long the padded string is to be (default 80)
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# 3 - the character to pad with (default '-')
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# 4 - the side to pad on, L or R or C for centre (default R)
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# RETURNS: Nothing
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#===============================================================================
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pad () {
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local text=${1?Usage: pad text [length] [character] [L|R|C]}
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local length=${2:-80}
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local char=${3:--}
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local side=${4:-R}
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local line l2
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[ ${#text} -ge $length ] && { echo "$text"; return; }
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char=${char:0:1}
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side=${side^^}
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printf -v line "%*s" $(($length - ${#text})) ' '
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line=${line// /$char}
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if [[ $side == "R" ]]; then
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echo "${text}${line}"
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elif [[ $side == "L" ]]; then
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echo "${line}${text}"
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elif [[ $side == "C" ]]; then
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l2=$((${#line}/2))
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echo "${line:0:$l2}${text}${line:$l2}"
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fi
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}
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#=== FUNCTION ================================================================
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# NAME: yes_no
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# DESCRIPTION: Read a Yes or No response from STDIN and return a suitable
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# numeric value
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# PARAMETERS: 1 - Prompt string for the read
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# 2 - Default value (optional)
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# RETURNS: 0 for a response of Y or YES, 1 otherwise
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#===============================================================================
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yes_no () {
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local prompt="${1:?Usage: yes_no prompt [default]}"
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local default="${2// /}"
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local ans res
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if [[ -n $default ]]; then
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default="-i $default"
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fi
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#
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# Read and handle CTRL-D (EOF)
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#
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read -e $default -p "$prompt" ans
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res="$?"
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if [[ $res -ne 0 ]]; then
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echo "Read aborted"
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return 1
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fi
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ans=${ans^^}
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ans=${ans//[^YESNO]/}
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if [[ $ans =~ ^Y(E|ES)?$ ]]; then
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return 0
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else
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return 1
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fi
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}
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