#!/bin/sh

usage()

{

cat << EOF >&2

Usage:

  -h            show this HELP message

  -d  DSTDIR    set destination directory

  -p  PROJECT   set project name (i.e. sofort)

  -n  PREFIX    set namespace prefix (i.e. sfrt)

EOF

exit 1

}

error_dstdir_exists()

{

	echo "the destination directory '$dstdir' already exists!" >&2

	exit 2

}

# one: args

dstdir=

project=

namespace=

srcdir=`dirname $0` || exit 2

cd "$srcdir" || exit 2

srcdir=`pwd` || exit 2

while getopts "hd:p:n:" opt; do

	case $opt in

	h)

  		usage

  		;;

	d)

    		dstdir="$OPTARG"

    		;;

	p)

    		project="$OPTARG"

    		;;

	n)

    		namespace="$OPTARG"

    		;;

	\?)

    		printf "Invalid option: -%s" "$OPTARG" >&2

    		usage

    		;;

	esac

done

# two: clone

if [ -z "$dstdir" ] || [ -z "$project" ] || [ -z "$namespace" ]; then

	usage

fi

stat "$dstdir" >/dev/null 2>/dev/null && error_dstdir_exists

mkdir -p "$(dirname $dstdir)" || exit 2

cp -r "$srcdir" "$dstdir" || exit 2

rm "$dstdir"/sofort.sh || exit 2

rm -rf "$dstdir"/.git || exit 2

# three: content

cd "$dstdir" || exit 2

files=$(find . -type f)

lowerspace=`echo "$namespace" | tr '[:upper:]' '[:lower:]'`_

upperspace=`echo "$namespace" | tr '[:lower:]' '[:upper:]'`_

for f in $files; do

	sed -e s/sofort/$project/g "$f" > "$f.tmp" || exit 2

	mv "$f.tmp" "$f" || exit 2

	sed -e s/sfrt_/$lowerspace/g "$f" > "$f.tmp" || exit 2

	mv "$f.tmp" "$f" || exit 2

	sed -e s/SFRT_/$upperspace/g "$f" > "$f.tmp" || exit 2

	mv "$f.tmp" "$f" || exit 2

done

# and also project/tagver.mk, which has SFRT, not SFRT_

f=project/tagver.mk

sed -e s/SFRT/$upperspace/g "$f" > "$f.tmp" || exit 2

mv "$f.tmp" "$f" || exit 2

# four: directory names

mv include/sofort include/$project || exit 2

dirs=$(find . -type d)

for d in $dirs; do

	name=`echo "$d" | sed -e s/sfrt_/$lowerspace/g -e s/sofort/$project/g`

	if [ "$d" != "$name" ]; then

		mv "$d" "$name" || exit 2

	fi

done

# five: file names

files=$(find . -type f)

for f in $files; do

	name=`echo "$f" | sed -e s/sfrt_/$lowerspace/g -e s/sofort/$project/g`

	if [ "$f" != "$name" ]; then

		mv "$f" "$name" || exit 2

	fi

done

# six: references

cp "$srcdir"/COPYING.SOFORT "$dstdir" || exit 2

cp "$srcdir"/src/internal/argv/argv.h "$dstdir"/src/internal/argv || exit 2

# seven: remove howto text and dummy interfaces

rm "$dstdir"/HOWTO || exit 2

rm "$dstdir"/src/output/* || exit 2

recipe="$dstdir"/project/common.mk

files=$(find . -type f)

grep -v 'src/output' "$recipe" > "$recipe".tmp || exit 2

mv "$recipe".tmp "$recipe" || exit 2

for f in $files; do

	grep -v 'dummy' "$f" > "$f".tmp

	mv "$f".tmp "$f" || exit 2

done

# eight: finalize

uppername=`echo "$project" | tr '[:lower:]' '[:upper:]'`

utilcsrc=src/$project.c

sed -e s/SOFORT/$uppername/g $utilcsrc> $utilcsrc.tmp || exit 2

mv $utilcsrc.tmp $utilcsrc || exit 2

touch COPYING.$uppername || exit 2

echo "$project: project description" > README || exit 2

chmod +x sysinfo/host/host.sh || exit 2

chmod +x sysinfo/version.sh   || exit 2

chmod +x ./configure          || exit 2

# all done

exit 0