examples/misc/aliasconv.bash

   1 #! /bin/bash
   2 #
   3 # aliasconv.bash - convert csh aliases to bash aliases and functions
   4 #
   5 # usage: aliasconv.bash
   6 #
   7 # Chet Ramey
   8 # chet@po.cwru.edu
   9 #
  10 trap 'rm -f $TMPFILE' 0 1 2 3 6 15
  11
  12 TMPFILE=$(mktemp -t cb.XXXXXX) || exit 1
  13
  14 T=$'\t'
  15
  16 cat << \EOF >$TMPFILE
  17 mkalias ()
  18 {
  19         case $2 in
  20         '')     echo alias ${1}="''" ;;
  21         *[#\!]*)
  22                 comm=$(echo $2 | sed  's/\!\*/"$\@"/g
  23                                       s/\!:\([1-9]\)/"$\1"/g
  24                                       s/#/\#/g')
  25                 echo $1 \(\) "{" command "$comm"  "; }"
  26                 ;;
  27         *)      echo alias ${1}=\'$(echo "${2}" | sed "s:':'\\\\'':g")\' ;;
  28         esac
  29 }
  30 EOF
  31
  32 # the first thing we want to do is to protect single quotes in the alias,
  33 # since they whole thing is going to be surrounded by single quotes when
  34 # passed to mkalias
  35
  36 sed -e "s:':\\'\\\'\\':" -e "s/^\([a-zA-Z0-9_-]*\)$T\(.*\)$/mkalias \1 '\2'/" >>$TMPFILE
  37
  38 $BASH $TMPFILE | sed -e 's/\$cwd/\$PWD/g' \
  39                      -e 's/\$term/\$TERM/g' \
  40                      -e 's/\$home/\$HOME/g' \
  41                      -e 's/\$user/\$USER/g' \
  42                      -e 's/\$prompt/\$PS1/g'
  43
  44 exit 0