setuptex that works in cygwin

.setuptex

### PLACE THIS FILE AS .setuptex in ~
### Add the following line to the end of ~/.bashrc:
###
###  source /home/PeckJ/.setuptex /cygdrive/c/context/tex
###

# Example setup file for ConTeXt distribution
#
# Author:  Hans Hagen
# Patches: Arthur R. & Mojca M.
#
# Usage:
#   . setuptex [texroot]
#
# On the first run also execute:
#   mktexlsr
#   texexec --make --alone

#
# PLATFORM
#

# we will try to guess the platform first
# (needs to be kept in sync with first-setup.sh and mtxrun)
# if yours is missing, let us know

platform="mswin"

#
# PATH
#

# this resolves to path of the setuptex script
# We use $0 for determine the path to the script, except for:
# * bash where $0 always is bash; here we use BASH_SOURCE
# * ksh93 where we use ${.sh.file}
# Thanks to Vasile Gaburici and Alessandro Perucchi for reporting this
# * http://www.ntg.nl/pipermail/ntg-context/2008/033953.html
# * http://www.ntg.nl/pipermail/ntg-context/2012/068658.html
if [ z"$BASH_SOURCE" != z ]; then
  SCRIPTPATH="$BASH_SOURCE"
elif [ z"$KSH_VERSION" != z ]; then
   	SCRIPTPATH="${.sh.file}"
else
	SCRIPTPATH="$0"
fi

OWNPATH=$(cd -P -- "$(dirname -- "$SCRIPTPATH")" && pwd -P)

# but one can also call
# . setuptex path-to-tree

TEXROOT=""
# first check if any path has been provided in the argument, and try to use that one
if [ $# -ne 0 ] ; then
	# TODO: resolve any errors
	ARGPATH=$(cd -P -- "$(dirname -- "$1")" && pwd -P) && ARGPATH=$ARGPATH/$(basename -- "$1")
	if test -f "$ARGPATH/texmf/tex/plain/base/plain.tex" ; then
		if [ -d "$ARGPATH/texmf-$platform/bin" ]; then
			TEXROOT="$ARGPATH"
		else
			echo "Binaries for platform '$platform' are missing."
			echo "(There is no folder \"$ARGPATH/texmf-$platform/bin\")"
		fi
	else
		echo "The argument \"$ARGPATH\" is not a valid TEXROOT path."
		echo "(There is no file \"$ARGPATH/texmf/tex/plain/base/plain.tex\")"

		if [ -f "$OWNPATH/texmf/tex/plain/base/plain.tex" ]; then
			TEXROOT="$OWNPATH"
		fi
	fi
else
	if [ -f "$OWNPATH/texmf/tex/plain/base/plain.tex" ]; then
		if [ -d "$OWNPATH/texmf-$platform/bin" ]; then
			TEXROOT="$OWNPATH"
		else
			echo "Binaries for platform '$platform' are missing."
			echo "(There is no folder \"$OWNPATH/texmf-$platform/bin\")"
		fi
	else
		echo "\"$OWNPATH\" is not a valid TEXROOT path."
		echo "(There is no file \"$OWNPATH/texmf/tex/plain/base/plain.tex\")"
	fi
fi

if [ "$TEXROOT" != "" ]; then
	# for Alan Braslau's server :)
	#if [ "x$PS1" != "x" ] ; then
	#	echo "Setting \"$TEXROOT\" as ConTeXt root."
	#fi

# ConTeXt binaries have to be added to PATH
TEXMFOS=$TEXROOT/texmf-$platform
export PATH=$TEXMFOS/bin:$PATH

# unset variables that won't be used lately
unset platform cpu system OWNPATH SCRIPTPATH ARGPATH TEXMFOS

# not sure why this would be needed
# export CTXMINIMAL=yes

else
	echo "provide a proper tex root (like '. setuptex /something/tex')" ;
fi