#! /bin/sh

# waf configure wrapper

# Fancy colors used to beautify the output a bit.
#
if [ "$NOCOLOR" ] ; then
    NORMAL=""
    BOLD=""
    RED=""
    YELLOW=""
    GREEN=""
else
    NORMAL="\033[0m"
    BOLD="\033[1m"
    RED="\033[91m"
    YELLOW="\033[01;93m"
    GREEN="\033[92m"
fi

EXIT_SUCCESS=0
EXIT_FAILURE=1
EXIT_ERROR=2
EXIT_BUG=10

CUR_DIR=$PWD

#possible relative path
WORKINGDIR=`dirname $0`
cd $WORKINGDIR
#abs path
WORKINGDIR=`pwd`
cd $CUR_DIR

# Checks for Python interpreter. Honours $PYTHON if set. Stores path to
# interpreter in $PYTHON.
#
checkPython()
{
	if [ -z "$PYTHON" ] ; then
	    PYTHON=`which python2 2>/dev/null`
	fi
	if [ -z "$PYTHON" ] ; then
	    PYTHON=`which python 2>/dev/null`
	fi
	printf "Checking for Python\t\t\t:  "
	if [ ! -x "$PYTHON" ] ; then
	  printf $RED"not found!"$NORMAL"\n"
	  echo "Please make sure that the Python interpreter is available in your PATH"
	  echo "or invoke configure using the PYTHON flag, e.g."
	  echo "$ PYTHON=/usr/local/bin/python configure"
	  exit $EXIT_FAILURE
	fi
	printf $GREEN"$PYTHON"$NORMAL"\n"
}

# Checks for WAF. Honours $WAF if set. Stores path to 'waf' in $WAF.
# Requires that $PYTHON is set.
#
checkWAF()
{
	printf "Checking for WAF\t\t\t:  "
	#installed miniwaf in sourcedir
	if [ -z "$WAF" ] ; then
	    if [ -f "${WORKINGDIR}/waf" ] ; then
		WAF="${WORKINGDIR}/waf"
		if [ ! -x "$WAF" ] ; then
		    chmod +x $WAF
		fi
	    fi
	fi
	if [ -z "$WAF" ] ; then
	    if [ -f "${WORKINGDIR}/waf-light" ] ; then
		${WORKINGDIR}/waf-light --make-waf
	        WAF="${WORKINGDIR}/waf"
	    fi
	fi
	#global installed waf with waf->waf.py link
	if [ -z "$WAF" ] ; then
	    WAF=`which waf 2>/dev/null`
	fi
	# neither waf nor miniwaf could be found
	if [ ! -x "$WAF" ] ; then
	    printf $RED"not found"$NORMAL"\n"
	    echo "Go to http://code.google.com/p/waf/"
	    echo "and download a waf version"
	    exit $EXIT_FAILURE
	else
	  printf $GREEN"$WAF"$NORMAL"\n"
	fi
	WAF="$PYTHON $WAF"
}

# Generates a Makefile. Requires that $WAF is set.
#
generateMakefile()
{
	cat > Makefile << EOF
#!/usr/bin/make -f
# Waf Makefile wrapper
WAF_HOME=$CUR_DIR

all:
	@$WAF build

all-debug:
	@$WAF -v build

all-progress:
	@$WAF -p build

install:
	@if test -n "\$(DESTDIR)"; then \\
	    $WAF install --destdir="\$(DESTDIR)"; \\
	else \\
	    $WAF install; \\
	fi;

.PHONY: install

uninstall:
	@if test -n "\$(DESTDIR)"; then \\
	    $WAF uninstall --destdir="\$(DESTDIR)"; \\
	else \\
	    $WAF uninstall; \\
	fi;

clean:
	@$WAF clean

distclean:
	@$WAF distclean
	@-rm -rf _build
	@-rm -f Makefile

check:
	@$WAF check

dist:
	@$WAF dist

EOF
}

checkPython
checkWAF

echo "calling waf configure with parameters"
$WAF configure $* || exit $EXIT_ERROR

if [ -f "Makefile" ] ; then
    echo ""
else
    generateMakefile
fi

exit $EXIT_SUCCESS