"Autofill" for bash scripting?


 
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# 1  
Old 11-14-2010
"Autofill" for bash scripting?

Hi there,

I'm trying to arrange the output of my script to the one as follows:
Code:
[Description]--------------[win]
[Long Description]-------- [lose]

However, after some trial and error, I get this:
Code:
[description]--------------[win]
[decription damn long]-----------[lose]

Is there anyway to do an "autofill" so that the [win] [lose] portion aligns?
I'm using a "for-loop" as i'm reading the descriptions from an array.

Any help will be appreciated. Thanks in advance.
# 2  
Old 11-14-2010
Check out printf for fixed width printing...
# 3  
Old 11-14-2010
That helps. Thanks! =)
# 4  
Old 11-14-2010
Here is are a couple of functions I wrote to pad strings in bash a while back:

Code:
function fill
{
    # fill string to width of count from string chars 
    #
    # usage:
    #      fill count [chars]
    #
    # if count is zero a blank string is output
    # chars is optional, spaces used if missing
    #
    FILL="${2:- }"
    for ((c=0; c<=$1; c+=${#FILL}))
    do
        echo -n "${FILL:0:$1-$c}"
    done
}
function pad
{
    # Pad to right of string to required width, using chars.
    # Chars is repeated, as required, until width is reached.
    #
    # usage:
    #      pad width string [chars]
    #
    # if chars not specified spaces are used
    #
    BACK=$(fill $1 "$3")
    let PAD=$1-${#2}
    if [ $PAD -lt 1 ] 
    then
        echo -n ${2:0:$1-1}
    else
        echo -n "$2${BACK:${#2}}"
    fi
}
pad 37 "[Description]" "- "
echo "[win]"
pad 37 "[decription damn long]" "- "
echo "[lose]"

Output:

Code:
[Description] - - - - - - - - - - - -[win]
[decription damn long]- - - - - - - -[lose]

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