linux/lib/raid6/unroll.awk
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   1
   2# This filter requires one command line option of form -vN=n
   3# where n must be a decimal number.
   4#
   5# Repeat each input line containing $$ n times, replacing $$ with 0...n-1.
   6# Replace each $# with n, and each $* with a single $.
   7
   8BEGIN {
   9        n = N + 0
  10}
  11{
  12        if (/\$\$/) { rep = n } else { rep = 1 }
  13        for (i = 0; i < rep; ++i) {
  14                tmp = $0
  15                gsub(/\$\$/, i, tmp)
  16                gsub(/\$\#/, n, tmp)
  17                gsub(/\$\*/, "$", tmp)
  18                print tmp
  19        }
  20}
  21
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