From: Simon Strandgaard <0bz63fz3m1qt3001@...>
Date: 2003-06-01T04:58:33+09:00
Subject: Re: expandtabs

On Sun, 01 Jun 2003 05:04:51 +0900, Josef 'Jupp' Schugt wrote:
> 
> The equivalents for method2 and method3 are obvious. Does anybody
> have a better solution that does not require splitting and re-joining
> (which is time-consuming)?


How about this:

 
def expand_tabs(data, indent=8)
    x = 0
    i = 0
    while i < data.length
        case data[i]
        when 9
            add = indent - (x % indent)
            data[i..i] = '.'*add
            x += add
            i += add
        when 10
            x = 0
            i += 1
        else
            x += 1
            i += 1
        end
    end
    data
end
text = <<TXT
a
1       b
12      4       c
123                     d
                e
        f
g
TXT
expand_tabs(text)
puts text


--
Simon Strandgaard