#!/usr/bin/env sh

# cross-platform `readlink -f`
# borrow from http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
_readlink_f() {
  TARGET_FILE=$1
  cd `dirname $TARGET_FILE`
  TARGET_FILE=`basename $TARGET_FILE`

  while [ -L "$TARGET_FILE" ]
  do
    TARGET_FILE=`readlink $TARGET_FILE`
    cd `dirname $TARGET_FILE`
    TARGET_FILE=`basename $TARGET_FILE`
  done

  echo `pwd -P`/$TARGET_FILE
}