#!/bin/sh
# lw-build-system/scripts/module-create.sh
#
#  (c)2009, Laurence Withers, <l@lwithers.me.uk>.
#  Released under the GNU GPLv3. See file COPYING or
#  http://www.gnu.org/copyleft/gpl.html for details.
#

# Creates a new source module.

# save a copy of the commandline for the upgrade script
MODULE_PARAMS="$@"



# Get the directory of the repository (needed to include functions file)
cd $(dirname $0)
cd $(dirname $(pwd))
P=$(basename $(pwd))
TOP=$(pwd)
[ -z "${VERBOSE}" ] && VERBOSE="0"
source scripts/functions.sh || exit 1



# Get arguments.
if [ $# -lt 3 ]
then
    echo "Usage: scripts/module-create.sh <type> <lang> <name> [args]"
    echo "    available modules:"
    for i in scripts/build.*
    do
        echo $i | sed "s,scripts/build\.\([^.]*\)\.\(.*\),	module: \1	lang: \2,"
    done
    exit 1
fi
TYPE=$1
shift
LANG=$1
shift
NAME=$1
shift
TEMPLATE=scripts/build.${TYPE}.${LANG}

if [ ! -e ${TEMPLATE}/instantiate ]
then
    echo "No such module type."
    exit 1
fi



# function to rename a package to a bash/C identifier
get_cname() {
    echo $1 | tr +-. p__
}



# function used to replace variables
#   assumes that we're in the directory to replace files in
#   for each argument X, it will replace @X@ with ${X}
do_parameter_subst() {
    CNAME=$(get_cname ${NAME})
    do_cmd source ~/.lwbuildrc || exit 1
    for param in P NAME CNAME AUTHOR EMAIL VIM_MODELINE KATE_MODELINE $@
    do
        do_cmd_redir sedscript echo "s,@${param}@,${!param},g" || exit 1
    done
    do_cmd find . -type f -a -not -name sedscript -exec sed -f sedscript -i {} \; || exit 1
    do_cmd rm sedscript || exit 1
}



# function used to add configuration variables
#   adds variables to the 'config' file; expects name and default value
#   some default default values are given below
add_config_option() {
    # don't add it if it already exists
    grep -q "{$1}" ../../config && return 0

    # add the default line
    echo "[ -z \"\${$1}\" ] && $1=\"$2\"" >> ../../config
}
COPT_CC_DEFAULT="gcc"
COPT_CXX_DEFAULT="g++"
COPT_CFLAGS_DEFAULT="-g -O2 -W -Wall"
COPT_QTSTUFF_DEFAULT='-I${QTDIR}/include -L${QTDIR}/lib -lqt-mt'


if [ ! -e "src" ]
then
    do_cmd mkdir src || exit 1
fi

if [ -e "src/${NAME}" ]
then
    print_failure "Module 'src/${NAME}' already exists"
    exit 1
fi

cleanup() {
    cd ${TOP}
    rm -rf "src/${NAME}"
    print_failure "Removed 'src/${NAME}'"
    exit 1
}

echo "Instantiating module 'src/${NAME}'..."
do_cmd cp -rL ${TEMPLATE} src/${NAME} || cleanup
do_cmd cd src/${NAME} || cleanup
do_cmd rm instantiate || cleanup
do_cmd_redir .params echo "${MODULE_PARAMS}" || cleanup

( source ../../${TEMPLATE}/instantiate ) || cleanup

print_success "Module instantiated"
grep -r "@TODO@" .
true

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# vim: syntax=sh:expandtab:ts=4:sw=4