tools-for-build/canonicalize-whitespace-1

   1 #!/bin/sh
   2
   3 # in-place "canonicalize-whitespace" conversion for files in $*:
   4 #   * Convert tabs to spaces.
   5 #   * Delete trailing whitespace.
   6 # (on $*, in place, overwriting the old file)
   7
   8 scratchfilename=/tmp/canonicalize-whitespace-1.$$.tmp
   9
  10 echo '/in canonicalize-whitespace-1'
  11 echo '/$*'=$*
  12 echo '/$scratchfilename='$scratchfilename
  13
  14 for f in $*; do
  15   if egrep '(   |[       ]+$)' $f >/dev/null
  16   then
  17     echo '/$f'=$f
  18
  19     # We reuse the "expand" GNU utility to remove tabs, but if it turns out
  20     # not to be available everywhere (or someone has defined "expand" to
  21     # mean something else on some other class of system!) we could probably
  22     # hand-code a replacement in a few lines.
  23     expand $f > $scratchfilename
  24
  25     sed 's/[    ]*$//' < $scratchfilename > $f
  26   fi
  27
  28 done
  29
  30 rm -f $scratchfilename