winpath.sh

#!/bin/sh
# Copyright © 1999 ImageMagick Studio LLC
# Copyright (C) 2003 - 2008 GraphicsMagick Group
#
# This program is covered by multiple licenses, which are described in
# LICENSE. You should have received a copy of LICENSE with this
# package; otherwise see https://imagemagick.org/script/license.php.
#
# Convert the specified POSIX path to a Windows path under MinGW and Cygwin
# The optional second parameter specifies the level of backslash escaping
# to apply for each Windows backslash position in order to support varying
# levels of variable substitutions in scripts.
#
# Note that Cygwin includes the 'cygpath' utility, which already provides
# path translation capability.
#
# Written by Bob Friesenhahn, June 2002
#
arg="$1"
escapes=4
if test -n "$2"; then
  escapes="$2"
  if test $escapes -gt 3; then
    printf "$0: escape level must in range 0 - 3\n"
    exit 1
  fi
fi
result=''
length=0
max_length=0
mount | sed -e 's:\\:/:g'  | (
  IFS="\n"
  while read mount_entry
  do
    win_mount_path=`printf "$mount_entry\n" | sed -e 's: .*::g'`
    unix_mount_path=`printf "$mount_entry\n" | sed -e 's:.* on ::;s: type .*::'`
    temp=`printf "$arg" | sed -e "s!^$unix_mount_path!$win_mount_path!"`
    if test "$temp" != "$arg"
    then
      candidate="$temp"
      length=${#unix_mount_path}
      if test $length -gt $max_length
      then
        result=$candidate
        max_length=$length
      fi
    fi
  done
  if test -z "$result"
  then
    printf "$0: path \"$arg\" is not mounted\n"
    exit 1
  fi
  case "$escapes" in
    0)
     printf "${result}" | sed -e 's:/:\\:g'
     ;;
    1)
     printf "${result}" | sed -e 's:/:\\\\:g'
     ;;
    2)
     printf "${result}" | sed -e 's:/:\\\\\\\\:g'
     ;;
    3)
     printf "${result}" | sed -e 's:/:\\\\\\\\\\\\\\\\:g'
     ;;
    *)
     printf "${result}"
     ;;
  esac
  exit 0;
 )