Re: [patch] acgeneral.m4 (dirname usage)

[Akim Demaille]

>>>>> "Alexandre" == Alexandre Oliva <[EMAIL PROTECTED]> writes:

Alexandre> Try this one:

>> al=`echo $dir | sed
>> '/^\/*$/!s%//*$%%;s%[^/]*$%%;s%//*$%/%;/^\/$/!s%/$%%'`

Almost right :)

~/src/ace % cat /tmp/dirname.sh                                  nostromo 10:59
#! /bin/sh

format="%12s %12s %12s %12s %12s\n"

# autoconf, alexandre, texi2dvi, GNU dirname
printf "$format" "" ac al tx dn

for dir in //tmp /tmp ./tmp ../../here \
           //tmp/ /tmp/ ./tmp/ ../../here \
           //tmp/2 /tmp/2 ./tmp/2 ../../here/2 \
           //tmp/2// /tmp/2// ./tmp/2// ../../here/2//
do
  ac=`echo $dir | sed 's%/[^/][^/]*$%%'`
  al=`echo $dir | sed '/^\/*$/!s%//*$%%;s%[^/]*$%%;s%//*$%/%;/^\/$/!s%/$%%'`
  tx=`echo $dir | sed 's!/[^/]*$!!;s!^$!.!'`
  dn=`command dirname $dir`
  printf "$format" "$dir" "$ac" "$al" "$tx" "$dn"
done
~/src/ace % sh /tmp/dirname.sh                                   nostromo 11:00
                       ac           al           tx           dn
       //tmp            /            /            /            /
        /tmp                         /            .            /
       ./tmp            .            .            .            .
  ../../here        ../..        ../..        ../..        ../..
      //tmp/       //tmp/            /        //tmp            /
       /tmp/        /tmp/            /         /tmp            /
      ./tmp/       ./tmp/            .        ./tmp            .
  ../../here        ../..        ../..        ../..        ../..
     //tmp/2        //tmp        //tmp        //tmp        //tmp
      /tmp/2         /tmp         /tmp         /tmp         /tmp
     ./tmp/2        ./tmp        ./tmp        ./tmp        ./tmp
../../here/2   ../../here   ../../here   ../../here   ../../here
   //tmp/2//    //tmp/2//        //tmp     //tmp/2/        //tmp
    /tmp/2//     /tmp/2//         /tmp      /tmp/2/         /tmp
   ./tmp/2//    ./tmp/2//        ./tmp     ./tmp/2/        ./tmp
../../here/2// ../../here/2//   ../../here ../../here/2/   ../../here