#!/bin/bash

_scl_source_help="Usage: source scl_source <action> [<collection> ...]

Don't use this script outside of SCL scriptlets!

Options:

    -h, --help    display this help and exit"

if [ $# -eq 0 -o $1 = "-h" -o $1 = "--help" ]; then

    echo "$_scl_source_help"

    return 0

fi

if [ -z "$_recursion" ]; then

    _recursion="false"

fi

if [ -z "$_scl_scriptlet_name" ]; then

    # The only allowed action in the case of recursion is the same

    # as was the original

    _scl_scriptlet_name=$1

fi

shift 1

if [ -z "$_scl_dir" ]; then

    # No need to re-define the directory twice

    _scl_dir=/etc/scl/conf

    if [ ! -e $_scl_dir ]; then

        _scl_dir=/etc/scl/prefixes

    fi

fi

for arg in "$@"; do

    _scl_prefix_file=$_scl_dir/$arg

    _scl_prefix=`cat $_scl_prefix_file 2> /dev/null`

    if [ $? -ne 0 ]; then

        echo "Can't read $_scl_prefix_file, $arg is probably not installed."

        return 1

    fi

    # First check if the collection is already in the list

    # of collections to be enabled

    for scl in ${_scls[@]}; do

        if [ $arg == $scl ]; then

            continue 2

        fi

    done

    # Now check if the collection isn't already enabled

    /usr/bin/scl_enabled $arg > /dev/null 2> /dev/null

    if [ $? -ne 0 ]; then

        _scls+=($arg)

        _scl_prefixes+=($_scl_prefix)

    fi;

done

if [ $_recursion == "false" ]; then

    _i=0

    _recursion="true"

    while [ $_i -lt ${#_scls[@]} ]; do

        _scl_scriptlet_path="${_scl_prefixes[$_i]}/${_scls[$_i]}/${_scl_scriptlet_name}"

        source "$_scl_scriptlet_path"

        if [ $? -ne 0 ]; then

            echo "Can't source $_scl_scriptlet_name, skipping."

        else

            export X_SCLS="${_scls[$_i]} $X_SCLS"

        fi;

        _i=$(($_i+1))

    done

    _scls=()

    _scl_prefixes=()

    _scl_scriptlet_name=""

    _recursion="false"

fi