koreader/plugins/backgroundrunner.koplugin/luawrapper.sh

#!/bin/sh

# Converts the return of "sh wrapper.sh $@" into Lua format.

CURRENT_DIR=$(dirname "$0")
sh "${CURRENT_DIR}/wrapper.sh" "$@" >/dev/null 2>&1 &
JOB_ID=$!

while true; do
    if ps -p ${JOB_ID} >/dev/null 2>&1; then
        # Unblock f:read().
        echo
    else
        wait ${JOB_ID}
        EXIT_CODE=$?
        if [ "${EXIT_CODE}" -eq "255" ]; then
            TIMEOUT="true"
        else
            TIMEOUT="false"
        fi

        if [ "${EXIT_CODE}" -eq "127" ]; then
            BADCOMMAND="true"
        else
            BADCOMMAND="false"
        fi

        echo "return { \
            result = ${EXIT_CODE}, \
            timeout = ${TIMEOUT}, \
            bad_command = ${BADCOMMAND}, \
            }"
        exit 0
    fi
done