#!/bin/sh


SUP_BUILD_DIR="$HOME/src/builds/sup"
SUP_BIN_DIR="$SUP_BUILD_DIR/bin"
SUP_LIB_DIR="$SUP_BUILD_DIR/lib"


ask_for() {
    echo "Choose one of the following:" >&2
    for command in $@
        do echo "    ${command#*/sup-}" >&2
    done
    exit 1
}


match_found() {
    if [ ! "$2" -a "$1" -a -f "$1" ]
        then return 0
        else return 1
    fi
}


exec_cmd() {
    if [ ! "$2" -a "$1" -a -f "$1" ]; then
        echo "Executing $1 $ARGS"
        ruby -I $SUP_LIB_DIR -w $1 $ARGS
        exit 0
    fi
}


COMMAND="$1"
if [ ! "$COMMAND" ]
    then ask_for $(ls -1 $SUP_BIN_DIR/sup-*)
fi
shift
ARGS="$@"
CANDIDATE=$(ls -1 $SUP_BIN_DIR/sup-${COMMAND} 2> /dev/null)
if match_found $CANDIDATE
    then exec_cmd $CANDIDATE
fi
CANDIDATES=$(ls -1 $SUP_BIN_DIR/sup-${COMMAND}*)
if match_found $CANDIDATES; then
    exec_cmd $CANDIDATES
elif [ "$CANDIDATES" ]; then
    ask_for $CANDIDATES 
else
    ask_for $(ls -1 $SUP_BIN_DIR/sup-*)
fi