Qt SCXML FTP Client Example

<?xml version="1.0" encoding="UTF-8"?>
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<scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" name="FtpClient"
       datamodel="ecmascript">
    <state id="G" initial="I">
        <transition event="reply" target="E"/>
        <transition event="cmd" target="F"/>

        <state id="I">
            <transition event="reply.2xx" target="S"/>
        </state>

        <state id="B">
            <transition event="cmd.DELE cmd.CWD cmd.CDUP cmd.HELP cmd.NOOP cmd.QUIT cmd.SYST
                               cmd.STAT cmd.RMD cmd.MKD cmd.PWD cmd.PORT"
                        target="W.general"/>
            <transition event="cmd.APPE cmd.LIST cmd.NLST cmd.REIN cmd.RETR cmd.STOR cmd.STOU"
                        target="W.1xx"/>
            <transition event="cmd.USER" target="W.user"/>

            <state id="S"/>
            <state id="F"/>
        </state>

        <state id="W">
            <onentry>
                <send eventexpr=""submit." + _event.name">
                    <param name="params" expr="_event.data"/>
                </send>
            </onentry>

            <transition event="reply.2xx" target="S"/>
            <transition event="reply.4xx reply.5xx" target="F"/>

            <state id="W.1xx">
                <transition event="reply.1xx" target="W.transfer"/>
            </state>
            <state id="W.transfer"/>
            <state id="W.general"/>
            <state id="W.user">
                <transition event="reply.3xx" target="P"/>
            </state>
            <state id="W.login"/>
        </state>

        <state id="P">
            <transition event="cmd.PASS" target="W.login"/>
        </state>
    </state>

    <final id="E"/>
</scxml>