SHM_Modbus/shm-modbus at main · SHMModbus/SHM_Modbus · GitHub

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#!/bin/bash

VERSION="2.1.7"

EXEC_COMMANDS=( \
    "modbus-tcp-client-shm" \
    "modbus-rtu-client-shm" \
    "dump-shm" \
    "write-shm" \
    "stdin-to-modbus-shm" \
    "shared-mem-random" \
    "shm-modbus-signal-gen" \
    "wago-modbus-coupler-shm" \
    "shm-modbus-gui" \
    "shm-format" \
)

# default command: shm-modbus-gui
if [[ "$#" -lt 1 ]] ; then
    command="shm-modbus-gui"
else
    command=${1}
fi

trap "exit 0" INT TERM

function print_help {
    echo "usage: $(basename "$0") [OPTION] command [CMD_OPTION..]"
    echo ""
    echo "  This script is a launcher script for several Modbus client simulator programs."
    echo "  Use --help as argument for commands to get more information about the usage of the program."
    echo ""
    echo "  options:"
    echo "    -h --help                 show this message"
    echo "    --help-all                show usage message of all Modbus tools"
    echo "    --gui                     start GUI (default)"
    echo "    --version                 show version of this script"
    echo "    --version-all             show version of all Modbus tools"
    echo ""
    echo "  commands:"
    for cmd in "${EXEC_COMMANDS[@]}"
    do
        printf '    %-25s execute %s with the given arguments' "${cmd}" "${cmd}"
        echo ""
    done
}

if [[ "${command}" = "--help" ]] || [[ "${command}" = "-h" ]]; then
    print_help
    exit 0
fi

if [[ "${command}" = "--gui" ]]; then
    command="shm-modbus-gui"
fi

if [[ "${command}" = "--help-all" ]]; then
    echo "===============> shm-modbus <==============="
    print_help
    echo ""
    echo ""

    for cmd in "${EXEC_COMMANDS[@]}"
    do
        echo "===============> ${cmd} <==============="

        if ! command -v "${cmd}" > /dev/null
        then
            >&2 echo "ERROR: command \"${cmd}\" not found in \$PATH"
        else
            "${cmd}" --help
        fi

        echo ""
        echo ""
    done
    exit 0
fi

if [[ "${command}" = "--version" ]]; then
    echo "shm-modbus ${VERSION}"
    exit 0
fi

if [[ "${command}" = "--version-all" ]]; then
    echo "shm-modbus ${VERSION}"
    for cmd in "${EXEC_COMMANDS[@]}"
    do
        printf "  > "

        if [[ "${cmd}" = "shm-modbus-signal-gen" ]]; then
            printf "%s " "${cmd}"
        fi

        if ! command -v "${cmd}" > /dev/null
        then
            >&2 echo "ERROR: command \"${cmd}\" not found in \$PATH"
        else
            "${cmd}" --version
        fi

    done
    exit 0
fi

# for compatibility reasons, may be removed in future version
if [[ "${command}" = "signal-gen" ]]; then
    command="shm-modbus-signal-gen"
fi

for cmd in "${EXEC_COMMANDS[@]}"
do
    if [[ "${command}" = "${cmd}" ]]; then
        trap "" INT TERM

        if ! command -v "${command}" > /dev/null
        then
            >&2 echo "ERROR: command \"${cmd}\" not found in \$PATH"
            exit 127
        fi

        "${command}" "${@:2}"
        exit $?
    fi
done

>&2 echo "unknown command: ${command}"
exit 64