User:Bugman/subsystems

Tracking down subsystems

Script

The following script is for finding all FlightGear dependencies:

Python script: Python script for finding all subsystems within the flightgear and simgear C++ code bases.

This script requires the grep Unix command, which can be installed on any OS. And it must be run with Python3.

#! /usr/bin/env python3

# Python module imports.
import operator
from os import access, F_OK, sep
from re import search, split
from subprocess import PIPE, Popen
import sys


# Source code repository paths.
SIMGEAR_PATH = "/flightgear/src/flightgear-simgear"
FLIGHTGEAR_PATH = "/flightgear/src/flightgear-flightgear"

# Directories to exclude from the grep.
EXCLUDE_DIR = [
    ".git",
    "build*"
]


class FindSubsystems:
    """Class for finding all subsystems and subsystem groups."""

    def __init__(self):
        """Find all subsystems and subsystem groups."""

        # Command line options.
        self.xml = False
        if len(sys.argv) == 2 and sys.argv[1] == "--xml":
            self.xml = True

        # SGSubsystem storage lists.
        self.subsystems = [[], [], [], []]
        self.groups = [[], [], [], []]

        # Grep exclude options.
        self.grep_exclude_dir = ""
        for name in EXCLUDE_DIR:
            self.grep_exclude_dir += "--exclude-dir \"%s\" " % name

        # The base objects.
        subsystem_base = Subsystem("SGSubsystem", xml=self.xml)
        group_base = Subsystem("SGSubsystemGroup", base_class=Subsystem("SGSubsystem"), xml=self.xml)

        # Add some problematic non-parsable classes.
        self.subsystems[1].append(Subsystem("FGAISim", base_class=Subsystem("FGInterface", base_class=Subsystem("SGSubsystem")), declaration_file="src/FDM/SP/AISim.hpp", xml=self.xml))

        # Find all SGSubsystem and SGSubsystemGroup derived classes.
        paths = [SIMGEAR_PATH, FLIGHTGEAR_PATH]
        for path in paths:
            self.find_primary(path=path, text="classes", primary=self.subsystems[0], base_name="SGSubsystem", base=subsystem_base, skip=["SGSubsystemGroup"])
            self.find_primary(path=path, text="groups", primary=self.groups[0], base_name="SGSubsystemGroup", base=group_base)

            self.find_secondary(path=path, text="classes", primary=self.subsystems[0], secondary=self.subsystems[1])
            self.find_secondary(path=path, text="groups", primary=self.groups[0], secondary=self.groups[1])

            self.find_tertiary(path=path, text="classes", secondary=self.subsystems[1], tertiary=self.subsystems[2])
            self.find_tertiary(path=path, text="groups", secondary=self.groups[1], tertiary=self.groups[2])

            self.find_quaternary(path=path, text="classes", tertiary=self.subsystems[2], quaternary=self.subsystems[3])
            self.find_quaternary(path=path, text="groups", tertiary=self.groups[2], quaternary=self.groups[3])

        # Find the subsystem and subsystem group implementation files.
        self.find_implementations()

        # Final summary.
        self.summarise()


    def count(self, storage_list):
        """Count the number of subsystems and subsystem groups.

        @param storage_list:    The data structure to count.
        @type storage_list:     list of Subsystem instances
        @return:                The number of subsystems and number of groups.
        @rtype:                 int, int
        """

        # Init.
        subsystems = 0
        groups = 0
        for element in storage_list:
            if element.is_group():
                groups += 1
            else:
                subsystems += 1

        # Return the counts.
        return subsystems, groups


    def find_implementations(self):
        """Find all implementation files for all subsystems and subsystem groups."""

        # Loop over all subsystems and groups.
        for subsystem in self.subsystems[0] + self.subsystems[1] + self.subsystems[2] + self.subsystems[3] + self.groups[0] + self.groups[1] + self.groups[2] + self.groups[3]:
            # The repository location.
            if subsystem.declaration_file[:7] == "simgear":
                path = SIMGEAR_PATH
            else:
                path = FLIGHTGEAR_PATH

            # The grep command for the ctor and dtor implementation.
            ctor = "\<%s\>::\<%s\>[ \(]" % (subsystem.name, subsystem.name)
            dtor = "\<%s\>::\~\<%s\>[ \(]" % (subsystem.name, subsystem.name)
            grep_ctor = 'grep -rI "%s\|%s"' % (ctor, dtor)

            # The grep command for any function implementation.
            grep_any = 'grep -rI %s "^[A-Za-z ]*\<%s\>::"' % (self.grep_exclude_dir, subsystem.name)

            # Search for matching file roots.
            if subsystem.declaration_file[-3:] == "hxx":
                # The probable implementation file name.
                file_name = subsystem.declaration_file[:-3] + "cxx"
                full_path = path + sep + file_name
                if access(full_path, F_OK): 
                    # The Unix grep commands to run.
                    cmds = [
                        '%s %s' % (grep_ctor, full_path),
                        '%s %s | grep -v "return"' % (grep_any, full_path)
                    ]

                    # Search.
                    for cmd in cmds:
                        pipe = Popen(cmd, shell=True, stdout=PIPE)
                        lines = pipe.stdout.readlines()
                        if len(lines):
                            subsystem.implementation_file = file_name
                            break

            # Search everywhere.
            else:
                # The Unix grep commands to run.
                cmds = [
                    'cd %s; %s' % (path, grep_ctor),
                    'cd %s; %s | grep -v "return"' % (path, grep_any)
                ]

                # Search.
                for cmd in cmds:
                    pipe = Popen(cmd, shell=True, stdout=PIPE)

                    # Read all output.
                    files = []
                    for line in pipe.stdout.readlines():
                        # Convert the byte-array.
                        line = line.decode()

                        # Add the file if not already present.
                        file_name = line.split(":")[0]
                        if file_name not in files:
                            files.append(file_name)

                    # Bad grep.
                    if len(files) > 1:
                        sys.stderr.write("Warning: Excessive grep matching, too many implementation files found for:\n")
                        sys.stderr.write("    %s: %s\n" % (subsystem.name, files))

                    # Store the implementation file.
                    elif len(files):
                        subsystem.implementation_file = files[0]
                        break


    def find_primary(self, path=None, text=None, primary=None, base_name=None, base=None, skip=[]):
        """Find all primary subsystems and groups

        @keyword path:      The path to the repository to search through.
        @type path:         str
        @keyword text:      Text identifying subsystems vs. subsystem groups.
        @type text:         str
        @keyword primary:   The primary list of subsystems or groups.
        @type primary:      list of Subsystem instances
        @keyword base_name: The name of the base class.
        @type base_name:    str
        @keyword base:      The base class object.
        @type base:         Subsystem instance
        @keyword skip:      A list of class names to skip.
        @type skip:         list of str
        """

        # Printout.
        sys.stderr.write("Finding all primary %s in: %s\n" % (text, path))

        # Find all subsystems or groups.
        for file_name, class_name in self.grep(path=path, base_name=base_name):
            if class_name in skip:
                continue
            primary.append(Subsystem(class_name, base_class=base, declaration_file=file_name, xml=self.xml))

        # Sort the subsystems by name.
        primary.sort(key=operator.attrgetter('name'))


    def find_secondary(self, path=None, text=None, primary=None, secondary=None):
        """Find all secondary subsystems and groups

        @keyword path:      The path to the repository to search through.
        @type path:         str
        @keyword text:      Text identifying subsystems vs. subsystem groups.
        @type text:         str
        @keyword primary:   The primary list of subsystems or groups.
        @type primary:      list of Subsystem instances
        @keyword secondary: The secondary list of subsystems or groups.
        @type secondary:    list of Subsystem instances
        """

        # Printout.
        sys.stderr.write("Finding all secondary %s in: %s\n" % (text, path))

        # Loop over all primary subsystems.
        for subsystem in primary:
            for file_name, derived_class in self.grep(path=path, base_name=subsystem.name):
                secondary.append(Subsystem(derived_class, base_class=subsystem, declaration_file=file_name, xml=self.xml))

        # Sort the subsystems by name.
        secondary.sort(key=operator.attrgetter('name'))


    def find_tertiary(self, path=None, text=None, secondary=None, tertiary=None):
        """Find all tertiary subsystems and groups

        @keyword path:      The path to the repository to search through.
        @type path:         str
        @keyword text:      Text identifying subsystems vs. subsystem groups.
        @type text:         str
        @keyword secondary: The secondary list of subsystems or groups.
        @type secondary:    list of Subsystem instances
        @keyword tertiary:  The tertiary list of subsystems or groups.
        @type tertiary:     list of Subsystem instances
        """

        # Printout.
        sys.stderr.write("Finding all tertiary %s in: %s\n" % (text, path))

        # Loop over all secondary subsystems.
        for subsystem in secondary:
            for file_name, derived_class in self.grep(path=path, base_name=subsystem.name):
                tertiary.append(Subsystem(derived_class, base_class=subsystem, declaration_file=file_name, xml=self.xml))

        # Sort all subsystems by name.
        tertiary.sort(key=operator.attrgetter('name'))


    def find_quaternary(self, path=None, text=None, tertiary=None, quaternary=None):
        """Find all quaternary subsystems and groups

        @keyword path:          The path to the repository to search through.
        @type path:             str
        @keyword text:          Text identifying subsystems vs. subsystem groups.
        @type text:             str
        @keyword tertiary:      The tertiary list of subsystems or groups.
        @type tertiary:         list of Subsystem instances
        @keyword quaternary:    The quaternary list of subsystems or groups.
        @type quaternary:       list of Subsystem instances
        """

        # Printout.
        sys.stderr.write("Finding all quaternary %s in: %s\n" % (text, path))

        # Loop over all tertiary subsystems.
        for subsystem in tertiary:
            for file_name, derived_class in self.grep(path=path, base_name=subsystem.name):
                quaternary.append(Subsystem(derived_class, base_class=subsystem, declaration_file=file_name, xml=self.xml))

        # Sort all subsystems by name.
        quaternary.sort(key=operator.attrgetter('name'))


    def grep(self, path=None, base_name=None):
        """Generator method for finding all classes derived from the given base name and repository.

        @keyword path:      The path to the repository to search through.
        @type path:         str
        @keyword base_name: The name of the base class.
        @type base_name:    str
        @return:            The source file and the name of the derived class.
        @rtype:             str, str
        """

        # The Unix grep command to run.
        cmd = 'cd %s; grep -rI %s "public \<%s\>" | grep -v "%s::"' % (path, self.grep_exclude_dir, base_name, base_name)
        pipe = Popen(cmd, shell=True, stdout=PIPE)

        # Read all output.
        for line in pipe.stdout.readlines():
            # Convert the byte-array.
            line = line.decode()

            # Skip this script.
            if search("grep ", line):
                continue

            # Cannot handle this line!
            if not search("class ", line):
                sys.stderr.write("Skipping: %s\n" % repr(line[:-1]))
                continue

            # Split by single colons.
            elements = split("(?<!:):(?!:)", line)

            # The file and class name.
            file_name = elements[0]
            class_name = elements[1]
            class_name = class_name.replace("class", "")
            class_name = class_name.strip()

            # Generator method.
            yield file_name, class_name


    def summarise(self):
        """Print out a summary of all found subsystems and subsystem groups."""

        # XML start.
        if self.xml:
            print("<subsystems>")

        # Subsystem and group printouts.
        labels = ["primary", "secondary", "tertiary", "quaternary"]
        labels2 = ["Primary", "Secondary", "Tertiary", "Quaternary"]
        classes = ["subsystems", "groups"]
        for i in range(len(self.subsystems)):
            for j in range(len(classes)):
                if classes[j] == "subsystems":
                    subsystem_list = self.subsystems[i]
                else:
                    subsystem_list = self.groups[i]

                # Nothing in the list.
                if not len(subsystem_list):
                    continue

                # Count all.
                counts = self.count(subsystem_list)

                # Start.
                if self.xml:
                    print("  <%s_%s count=\"%i\">" % (labels[i], classes[j], counts[j]))
                else:
                    print("\n%s %s (%i):" % (labels2[i], classes[j], counts[j]))

                # Subsystems.
                for subsystem in subsystem_list:
                    print("    %s" % (subsystem))

                # End.
                if self.xml:
                    print("  </%s_%s>" % (labels[i], classes[j]))

        # Counts.
        subsystem_classes = len(self.subsystems[0] + self.subsystems[1] + self.subsystems[2] + self.subsystems[3])
        subsystem_groups = len(self.groups[0] + self.groups[1] + self.groups[2] + self.groups[3])
        subsystem_total = subsystem_classes + subsystem_groups

        # Separate simgear and flightgear subsystems.
        subsystem_classes_simgear = 0
        subsystem_classes_flightgear = 0
        subsystem_groups_simgear = 0
        subsystem_groups_flightgear = 0
        for subsystem in self.subsystems[0] + self.subsystems[1] + self.subsystems[2] + self.subsystems[3]:
            if subsystem.declaration_file[:7] == "simgear":
                subsystem_classes_simgear += 1
            else:
                subsystem_classes_flightgear += 1
        for group in self.groups[0] + self.groups[1] + self.groups[2] + self.groups[3]:
            if group.declaration_file[:7] == "simgear":
                subsystem_groups_simgear += 1
            else:
                subsystem_groups_flightgear += 1

        # Sums.
        simgear_total = subsystem_classes_simgear + subsystem_groups_simgear
        flightgear_total = subsystem_classes_flightgear + subsystem_groups_flightgear
        if self.xml:
            print("  <counts>")
            print("    <simgear>")
            print("      <subsystem_classes>%i</subsystem_classes>" % subsystem_classes_simgear)
            print("      <subsystem_groups>%i</subsystem_groups>" % subsystem_groups_simgear)
            print("      <total>%i</total>" % simgear_total)
            print("    </simgear>")
            print("    <flightgear>")
            print("      <subsystem_classes>%i</subsystem_classes>" % subsystem_classes_flightgear)
            print("      <subsystem_groups>%i</subsystem_groups>" % subsystem_groups_flightgear)
            print("      <total>%i</total>" % flightgear_total)
            print("    </flightgear>")
            print("    <combined>")
            print("      <subsystem_classes>%i</subsystem_classes>" % subsystem_classes)
            print("      <subsystem_groups>%i</subsystem_groups>" % subsystem_groups)
            print("      <total>%i</total>" % subsystem_total)
            print("    </combined>")
            print("  </counts>")
        else:
            print("\nCounts: %i subsystem classes (%i flightgear, %i simgear)." % (subsystem_classes, subsystem_classes_flightgear, subsystem_classes_simgear))
            print("Counts: %i subsystem groups (%i flightgear, %i simgear)." % (subsystem_groups, subsystem_groups_flightgear, subsystem_groups_simgear))
            print("Counts: %i subsystem classes and groups (%i flightgear, %i simgear)." % (subsystem_total, flightgear_total, simgear_total))

        # XML end.
        if self.xml:
            print("</subsystems>")



class Subsystem:
    """Object for storing the information for a specific subsystem."""

    def __init__(self, name, base_class=None, declaration_file=None, implementation_file=None, xml=False):
        """Set up the object.

        @param name:                The name of the subsystem.
        @type name:                 str
        @keyword base_class:        The name of the base class.
        @type base_class:           str
        @keyword declaration_file:  The name of the file containing the subsystem declaration.
        @type declaration_file:     str
        @keyword implementation_file:  The name of the file containing the subsystem declaration.
        @type implementation_file:     str
        @keyword xml:               Produce a valid XML representation of the object.
        @type xml:                  bool
        """

        # Store the data.
        self.name = name
        self.base_class = base_class
        self.declaration_file = declaration_file
        self.implementation_file = implementation_file
        self.xml = xml


    def __repr__(self):
        """Overwrite the string representation of the object.

        @return:    The string representation.
        @rtype:     str
        """

        # The subsystem name.
        string = "<%s" % self.name

        # The inheritance chain.
        if self.base_class:
            if self.xml:
                string += " from=\""
            else:
                string += " : "
            string += "%s" % self.base_class.name
            if self.base_class.base_class:
                string += " : %s" % self.base_class.base_class.name
                if self.base_class.base_class.base_class:
                    string += " : %s" % self.base_class.base_class.base_class.name
                    if self.base_class.base_class.base_class.base_class:
                        string += " : %s" % self.base_class.base_class.base_class.base_class.name
                        if self.base_class.base_class.base_class.base_class.base_class:
                            string += " : %s" % self.base_class.base_class.base_class.base_class.base_class.name
            if self.xml:
                string += "\""

        # Add the declaration file name.
        if self.xml:
            string += " declaration="
        else:
            string += " in "
        string += "\"%s\"" % self.declaration_file

        # Add the implementation file name.
        if self.implementation_file:
            if self.xml:
                string += " implementation="
            else:
                string += ", "
            string += "\"%s\"" % self.implementation_file

        # Closure.
        if self.xml:
            string += "/"
        string += ">"

        # Return the representation.
        return string


    def is_group(self):
        """Determine this is a subsystem or subsystem group.

        @return:    True if this is a subsystem group.
        @rtype:     bool
        """

        # Chase the base name as far as possible.
        if self.name == "SGSubsystemGroup":
            return True
        if self.base_class.name == "SGSubsystemGroup":
            return True
        if self.base_class.base_class:
            if self.base_class.base_class.name == "SGSubsystemGroup":
                return True
            if self.base_class.base_class.base_class:
                if self.base_class.base_class.base_class.name == "SGSubsystemGroup":
                    return True
                if self.base_class.base_class.base_class.base_class:
                    if self.base_class.base_class.base_class.base_class.name == "SGSubsystemGroup":
                        return True
                    if self.base_class.base_class.base_class.base_class.base_class:
                        if self.base_class.base_class.base_class.base_class.name.base_class.name == "SGSubsystemGroup":
                            return True

        # A normal subsystem.
        return False



# Instantiate the class if run as a script.
if __name__ == "__main__":
    FindSubsystems()

All subsystems

The result is:

Text output: A listing of all flightgear and simgear subsystems and subsystem groups.

Output from the Python script for finding all subsystems within the flightgear and simgear C++ code bases. The error output from the script was redirected and hence not shown below.

Primary subsystems (91):
    <ADF : SGSubsystem in "src/Instrumentation/adf.hxx", "src/Instrumentation/adf.cxx">
    <AirportDynamicsManager : SGSubsystem in "src/Airports/airportdynamicsmanager.hxx", "src/Airports/airportdynamicsmanager.cxx">
    <AirspeedIndicator : SGSubsystem in "src/Instrumentation/airspeed_indicator.hxx", "src/Instrumentation/airspeed_indicator.cxx">
    <Altimeter : SGSubsystem in "src/Instrumentation/altimeter.hxx", "src/Instrumentation/altimeter.cxx">
    <AreaSampler : SGSubsystem in "src/Environment/terrainsampler.cxx", "src/Environment/terrainsampler.cxx">
    <AttitudeIndicator : SGSubsystem in "src/Instrumentation/attitude_indicator.hxx", "src/Instrumentation/attitude_indicator.cxx">
    <Clock : SGSubsystem in "src/Instrumentation/clock.hxx", "src/Instrumentation/clock.cxx">
    <CommRadio : SGSubsystem in "src/Instrumentation/commradio.hxx">
    <Component : SGSubsystem in "src/Autopilot/component.hxx", "src/Autopilot/component.cxx">
    <DCLGPS : SGSubsystem in "src/Instrumentation/dclgps.hxx", "src/Instrumentation/dclgps.cxx">
    <DME : SGSubsystem in "src/Instrumentation/dme.hxx", "src/Instrumentation/dme.cxx">
    <Ephemeris : SGSubsystem in "src/Environment/ephemeris.hxx", "src/Environment/ephemeris.cxx">
    <FDMShell : SGSubsystem in "src/FDM/fdm_shell.hxx", "src/FDM/fdm_shell.cxx">
    <FGAIManager : SGSubsystem in "src/AIModel/AIManager.hxx", "src/AIModel/AIManager.cxx">
    <FGATCManager : SGSubsystem in "src/ATC/atc_mgr.hxx", "src/ATC/atc_mgr.cxx">
    <FGAircraftModel : SGSubsystem in "src/Model/acmodel.hxx", "src/Model/acmodel.cxx">
    <FGCom : SGSubsystem in "src/Network/fgcom.hxx", "src/Network/fgcom.cxx">
    <FGControls : SGSubsystem in "src/Aircraft/controls.hxx", "src/Aircraft/controls.cxx">
    <FGDNSClient : SGSubsystem in "src/Network/DNSClient.hxx", "src/Network/DNSClient.cxx">
    <FGElectricalSystem : SGSubsystem in "src/Systems/electrical.hxx", "src/Systems/electrical.cxx">
    <FGEventInput : SGSubsystem in "src/Input/FGEventInput.hxx", "src/Input/FGEventInput.cxx">
    <FGFlightHistory : SGSubsystem in "src/Aircraft/FlightHistory.hxx", "src/Aircraft/FlightHistory.cxx">
    <FGHTTPClient : SGSubsystem in "src/Network/HTTPClient.hxx", "src/Network/HTTPClient.cxx">
    <FGHttpd : SGSubsystem in "src/Network/http/httpd.hxx">
    <FGIO : SGSubsystem in "src/Main/fg_io.hxx", "src/Main/fg_io.cxx">
    <FGInterface : SGSubsystem in "src/FDM/flight.hxx", "src/FDM/flight.cxx">
    <FGJoystickInput : SGSubsystem in "src/Input/FGJoystickInput.hxx", "src/Input/FGJoystickInput.cxx">
    <FGKR_87 : SGSubsystem in "src/Instrumentation/kr_87.hxx", "src/Instrumentation/kr_87.cxx">
    <FGKeyboardInput : SGSubsystem in "src/Input/FGKeyboardInput.hxx", "src/Input/FGKeyboardInput.cxx">
    <FGLight : SGSubsystem in "src/Time/light.hxx", "src/Time/light.cxx">
    <FGLogger : SGSubsystem in "src/Main/logger.hxx", "src/Main/logger.cxx">
    <FGMagVarManager : SGSubsystem in "src/Environment/magvarmanager.hxx", "src/Environment/magvarmanager.cxx">
    <FGMarkerBeacon : SGSubsystem in "src/Instrumentation/marker_beacon.hxx", "src/Instrumentation/marker_beacon.cxx">
    <FGModelMgr : SGSubsystem in "src/Model/modelmgr.hxx", "src/Model/modelmgr.cxx">
    <FGMouseInput : SGSubsystem in "src/Input/FGMouseInput.hxx", "src/Input/FGMouseInput.cxx">
    <FGMultiplayMgr : SGSubsystem in "src/MultiPlayer/multiplaymgr.hxx", "src/MultiPlayer/multiplaymgr.cxx">
    <FGNasalSys : SGSubsystem in "src/Scripting/NasalSys.hxx", "src/Scripting/NasalSys.cxx">
    <FGNavRadio : SGSubsystem in "src/Instrumentation/navradio.hxx", "src/Instrumentation/navradio.cxx">
    <FGPanel : SGSubsystem in "utils/fgpanel/FGPanel.hxx", "utils/fgpanel/FGPanel.cxx">
    <FGPanelProtocol : SGSubsystem in "utils/fgpanel/FGPanelProtocol.hxx", "utils/fgpanel/FGPanelProtocol.cxx">
    <FGPrecipitationMgr : SGSubsystem in "src/Environment/precipitation_mgr.hxx", "src/Environment/precipitation_mgr.cxx">
    <FGProperties : SGSubsystem in "src/Main/fg_props.hxx", "src/Main/fg_props.cxx">
    <FGReplay : SGSubsystem in "src/Aircraft/replay.hxx", "src/Aircraft/replay.cxx">
    <FGRidgeLift : SGSubsystem in "src/Environment/ridge_lift.hxx", "src/Environment/ridge_lift.cxx">
    <FGRouteMgr : SGSubsystem in "src/Autopilot/route_mgr.hxx", "src/Autopilot/route_mgr.cxx">
    <FGScenery : SGSubsystem in "src/Scenery/scenery.hxx", "src/Scenery/scenery.cxx">
    <FGSoundManager : SGSubsystem in "src/Sound/soundmanager.hxx", "src/Sound/soundmanager.cxx">
    <FGSubmodelMgr : SGSubsystem in "src/AIModel/submodel.hxx", "src/AIModel/submodel.cxx">
    <FGSubsystemExample : SGSubsystem in "docs-mini/README.introduction", "docs-mini/README.introduction">
    <FGTrafficManager : SGSubsystem in "src/Traffic/TrafficMgr.hxx", "src/Traffic/TrafficMgr.cxx">
    <FGViewMgr : SGSubsystem in "src/Viewer/viewmgr.hxx", "src/Viewer/viewmgr.cxx">
    <FGVoiceMgr : SGSubsystem in "src/Sound/voice.hxx", "src/Sound/voice.cxx">
    <GPS : SGSubsystem in "src/Instrumentation/gps.hxx", "src/Instrumentation/gps.cxx">
    <GSDI : SGSubsystem in "src/Instrumentation/gsdi.hxx", "src/Instrumentation/gsdi.cxx">
    <GUIMgr : SGSubsystem in "src/Canvas/gui_mgr.hxx", "src/Canvas/gui_mgr.cxx">
    <GroundRadar : SGSubsystem in "src/Cockpit/groundradar.hxx", "src/Cockpit/groundradar.cxx">
    <HUD : SGSubsystem in "src/Instrumentation/HUD/HUD.hxx", "src/Instrumentation/HUD/HUD.cxx">
    <HeadingIndicator : SGSubsystem in "src/Instrumentation/heading_indicator.hxx", "src/Instrumentation/heading_indicator.cxx">
    <HeadingIndicatorDG : SGSubsystem in "src/Instrumentation/heading_indicator_dg.hxx", "src/Instrumentation/heading_indicator_dg.cxx">
    <HeadingIndicatorFG : SGSubsystem in "src/Instrumentation/heading_indicator_fg.hxx", "src/Instrumentation/heading_indicator_fg.cxx">
    <InstVerticalSpeedIndicator : SGSubsystem in "src/Instrumentation/inst_vertical_speed_indicator.hxx", "src/Instrumentation/inst_vertical_speed_indicator.cxx">
    <LayerInterpolateController : SGSubsystem in "src/Environment/environment_ctrl.hxx">
    <MK_VIII : SGSubsystem in "src/Instrumentation/mk_viii.hxx", "src/Instrumentation/mk_viii.cxx">
    <MagCompass : SGSubsystem in "src/Instrumentation/mag_compass.hxx", "src/Instrumentation/mag_compass.cxx">
    <MasterReferenceGyro : SGSubsystem in "src/Instrumentation/mrg.hxx", "src/Instrumentation/mrg.cxx">
    <NavDisplay : SGSubsystem in "src/Cockpit/NavDisplay.hxx", "src/Cockpit/NavDisplay.cxx">
    <NavRadio : SGSubsystem in "src/Instrumentation/newnavradio.hxx">
    <NewGUI : SGSubsystem in "src/GUI/new_gui.hxx", "src/GUI/new_gui.cxx">
    <PerformanceDB : SGSubsystem in "src/AIModel/performancedb.hxx", "src/AIModel/performancedb.cxx">
    <PitotSystem : SGSubsystem in "src/Systems/pitot.hxx", "src/Systems/pitot.cxx">
    <PropertyBasedMgr : SGSubsystem in "simgear/props/PropertyBasedMgr.hxx", "simgear/props/PropertyBasedMgr.cxx">
    <PropertyInterpolationMgr : SGSubsystem in "simgear/props/PropertyInterpolationMgr.hxx", "simgear/props/PropertyInterpolationMgr.cxx">
    <RadarAltimeter : SGSubsystem in "src/Instrumentation/rad_alt.hxx", "src/Instrumentation/rad_alt.cxx">
    <RealWxController : SGSubsystem in "src/Environment/realwx_ctrl.hxx", "src/Environment/realwx_ctrl.cxx">
    <SGEventMgr : SGSubsystem in "simgear/structure/event_mgr.hxx", "simgear/structure/event_mgr.cxx">
    <SGInterpolator : SGSubsystem in "simgear/misc/interpolator.hxx", "simgear/misc/interpolator.cxx">
    <SGPerformanceMonitor : SGSubsystem in "simgear/structure/SGPerfMon.hxx", "simgear/structure/SGPerfMon.cxx">
    <SGSoundMgr : SGSubsystem in "simgear/sound/soundmgr.hxx">
    <SGSubsystemMgr : SGSubsystem in "simgear/structure/subsystem_mgr.hxx", "simgear/structure/subsystem_mgr.cxx">
    <SGTerraSync : SGSubsystem in "simgear/scene/tsync/terrasync.hxx", "simgear/scene/tsync/terrasync.cxx">
    <SlipSkidBall : SGSubsystem in "src/Instrumentation/slip_skid_ball.hxx", "src/Instrumentation/slip_skid_ball.cxx">
    <StaticSystem : SGSubsystem in "src/Systems/static.hxx", "src/Systems/static.cxx">
    <TACAN : SGSubsystem in "src/Instrumentation/tacan.hxx", "src/Instrumentation/tacan.cxx">
    <TCAS : SGSubsystem in "src/Instrumentation/tcas.hxx", "src/Instrumentation/tcas.cxx">
    <TimeManager : SGSubsystem in "src/Time/TimeManager.hxx", "src/Time/TimeManager.cxx">
    <Transponder : SGSubsystem in "src/Instrumentation/transponder.hxx", "src/Instrumentation/transponder.cxx">
    <TurnIndicator : SGSubsystem in "src/Instrumentation/turn_indicator.hxx", "src/Instrumentation/turn_indicator.cxx">
    <VacuumSystem : SGSubsystem in "src/Systems/vacuum.hxx", "src/Systems/vacuum.cxx">
    <VerticalSpeedIndicator : SGSubsystem in "src/Instrumentation/vertical_speed_indicator.hxx", "src/Instrumentation/vertical_speed_indicator.cxx">
    <View : SGSubsystem in "src/Viewer/view.hxx", "src/Viewer/view.cxx">
    <wxRadarBg : SGSubsystem in "src/Cockpit/wxradar.hxx", "src/Cockpit/wxradar.cxx">

Primary groups (8):
    <Autopilot : SGSubsystemGroup : SGSubsystem in "src/Autopilot/autopilot.hxx", "src/Autopilot/autopilot.cxx">
    <CockpitDisplayManager : SGSubsystemGroup : SGSubsystem in "src/Cockpit/cockpitDisplayManager.hxx", "src/Cockpit/cockpitDisplayManager.cxx">
    <FGEnvironmentMgr : SGSubsystemGroup : SGSubsystem in "src/Environment/environment_mgr.hxx", "src/Environment/environment_mgr.cxx">
    <FGInput : SGSubsystemGroup : SGSubsystem in "src/Input/input.hxx", "src/Input/input.cxx">
    <FGInstrumentMgr : SGSubsystemGroup : SGSubsystem in "src/Instrumentation/instrument_mgr.hxx", "src/Instrumentation/instrument_mgr.cxx">
    <FGSystemMgr : SGSubsystemGroup : SGSubsystem in "src/Systems/system_mgr.hxx", "src/Systems/system_mgr.cxx">
    <FGXMLAutopilotGroup : SGSubsystemGroup : SGSubsystem in "src/Autopilot/autopilotgroup.hxx", "src/Autopilot/autopilotgroup.cxx">
    <TerrainSampler : SGSubsystemGroup : SGSubsystem in "src/Environment/terrainsampler.hxx">

Secondary subsystems (28):
    <AnalogComponent : Component : SGSubsystem in "src/Autopilot/analogcomponent.hxx", "src/Autopilot/analogcomponent.cxx">
    <BasicRealWxController : RealWxController : SGSubsystem in "src/Environment/realwx_ctrl.cxx", "src/Environment/realwx_ctrl.cxx">
    <CanvasMgr : PropertyBasedMgr : SGSubsystem in "simgear/canvas/CanvasMgr.hxx", "simgear/canvas/CanvasMgr.cxx">
    <CommRadioImpl : CommRadio : SGSubsystem in "src/Instrumentation/commradio.cxx", "src/Instrumentation/commradio.cxx">
    <DigitalComponent : Component : SGSubsystem in "src/Autopilot/digitalcomponent.hxx", "src/Autopilot/digitalcomponent.cxx">
    <FGACMS : FGInterface : SGSubsystem in "src/FDM/SP/ACMS.hxx", "src/FDM/SP/ACMS.cxx">
    <FGADA : FGInterface : SGSubsystem in "src/FDM/SP/ADA.hxx", "src/FDM/SP/ADA.cxx">
    <FGAISim : FGInterface : SGSubsystem in "src/FDM/SP/AISim.hpp", "src/FDM/SP/AISim.cpp">
    <FGBalloonSim : FGInterface : SGSubsystem in "src/FDM/SP/Balloon.h", "src/FDM/SP/Balloon.cxx">
    <FGExternalNet : FGInterface : SGSubsystem in "src/FDM/ExternalNet/ExternalNet.hxx", "src/FDM/ExternalNet/ExternalNet.cxx">
    <FGExternalPipe : FGInterface : SGSubsystem in "src/FDM/ExternalPipe/ExternalPipe.hxx", "src/FDM/ExternalPipe/ExternalPipe.cxx">
    <FGHIDEventInput : FGEventInput : SGSubsystem in "src/Input/FGHIDEventInput.hxx", "src/Input/FGHIDEventInput.cxx">
    <FGJSBsim : FGInterface : SGSubsystem in "src/FDM/JSBSim/JSBSim.hxx", "src/FDM/JSBSim/JSBSim.cxx">
    <FGLaRCsim : FGInterface : SGSubsystem in "src/FDM/LaRCsim/LaRCsim.hxx", "src/FDM/LaRCsim/LaRCsim.cxx">
    <FGLinuxEventInput : FGEventInput : SGSubsystem in "src/Input/FGLinuxEventInput.hxx", "src/Input/FGLinuxEventInput.cxx">
    <FGMacOSXEventInput : FGEventInput : SGSubsystem in "src/Input/FGMacOSXEventInput.hxx", "src/Input/FGMacOSXEventInput.cxx">
    <FGMagicCarpet : FGInterface : SGSubsystem in "src/FDM/SP/MagicCarpet.hxx", "src/FDM/SP/MagicCarpet.cxx">
    <FGNullFDM : FGInterface : SGSubsystem in "src/FDM/NullFDM.hxx", "src/FDM/NullFDM.cxx">
    <FGReadablePanel : FGPanel : SGSubsystem in "utils/fgpanel/panel_io.hxx", "utils/fgpanel/panel_io.cxx">
    <FGSoundManager : SGSoundMgr : SGSubsystem in "src/Sound/soundmanager.hxx", "src/Sound/soundmanager.cxx">
    <FGUFO : FGInterface : SGSubsystem in "src/FDM/UFO.hxx", "src/FDM/UFO.cxx">
    <KLN89 : DCLGPS : SGSubsystem in "src/Instrumentation/KLN89/kln89.hxx", "src/Instrumentation/KLN89/kln89.cxx">
    <LayerInterpolateControllerImplementation : LayerInterpolateController : SGSubsystem in "src/Environment/environment_ctrl.cxx", "src/Environment/environment_ctrl.cxx">
    <MongooseHttpd : FGHttpd : SGSubsystem in "src/Network/http/httpd.cxx", "src/Network/http/httpd.cxx">
    <NavRadioImpl : NavRadio : SGSubsystem in "src/Instrumentation/newnavradio.cxx", "src/Instrumentation/newnavradio.cxx">
    <StateMachineComponent : Component : SGSubsystem in "src/Autopilot/autopilot.cxx", "src/Autopilot/autopilot.cxx">
    <YASim : FGInterface : SGSubsystem in "src/FDM/YASim/YASim.hxx", "src/FDM/YASim/YASim.cxx">
    <agRadar : wxRadarBg : SGSubsystem in "src/Cockpit/agradar.hxx", "src/Cockpit/agradar.cxx">

Secondary groups (2):
    <FGXMLAutopilotGroupImplementation : FGXMLAutopilotGroup : SGSubsystemGroup : SGSubsystem in "src/Autopilot/autopilotgroup.cxx", "src/Autopilot/autopilotgroup.cxx">
    <TerrainSamplerImplementation : TerrainSampler : SGSubsystemGroup : SGSubsystem in "src/Environment/terrainsampler.cxx", "src/Environment/terrainsampler.cxx">

Tertiary subsystems (6):
    <DigitalFilter : AnalogComponent : Component : SGSubsystem in "src/Autopilot/digitalfilter.hxx", "src/Autopilot/digitalfilter.cxx">
    <Logic : DigitalComponent : Component : SGSubsystem in "src/Autopilot/logic.hxx", "src/Autopilot/logic.cxx">
    <NoaaMetarRealWxController : BasicRealWxController : RealWxController : SGSubsystem in "src/Environment/realwx_ctrl.cxx", "src/Environment/realwx_ctrl.cxx">
    <PIDController : AnalogComponent : Component : SGSubsystem in "src/Autopilot/pidcontroller.hxx", "src/Autopilot/pidcontroller.cxx">
    <PISimpleController : AnalogComponent : Component : SGSubsystem in "src/Autopilot/pisimplecontroller.hxx", "src/Autopilot/pisimplecontroller.cxx">
    <Predictor : AnalogComponent : Component : SGSubsystem in "src/Autopilot/predictor.hxx", "src/Autopilot/predictor.cxx">

Quaternary subsystems (1):
    <FlipFlop : Logic : DigitalComponent : Component : SGSubsystem in "src/Autopilot/flipflop.hxx", "src/Autopilot/flipflop.cxx">

Counts: 126 subsystem classes (117 flightgear, 9 simgear).
Counts: 10 subsystem groups (10 flightgear, 0 simgear).
Counts: 136 subsystem classes and groups (127 flightgear, 9 simgear).

XML output: A listing of all flightgear and simgear subsystems and subsystem groups.

XML output from the Python script for finding all subsystems within the flightgear and simgear C++ code bases. The error output from the script was redirected and hence not shown below.

<subsystems>
  <primary_subsystems count="91">
    <ADF from="SGSubsystem" declaration="src/Instrumentation/adf.hxx" implementation="src/Instrumentation/adf.cxx"/>
    <AirportDynamicsManager from="SGSubsystem" declaration="src/Airports/airportdynamicsmanager.hxx" implementation="src/Airports/airportdynamicsmanager.cxx"/>
    <AirspeedIndicator from="SGSubsystem" declaration="src/Instrumentation/airspeed_indicator.hxx" implementation="src/Instrumentation/airspeed_indicator.cxx"/>
    <Altimeter from="SGSubsystem" declaration="src/Instrumentation/altimeter.hxx" implementation="src/Instrumentation/altimeter.cxx"/>
    <AreaSampler from="SGSubsystem" declaration="src/Environment/terrainsampler.cxx" implementation="src/Environment/terrainsampler.cxx"/>
    <AttitudeIndicator from="SGSubsystem" declaration="src/Instrumentation/attitude_indicator.hxx" implementation="src/Instrumentation/attitude_indicator.cxx"/>
    <Clock from="SGSubsystem" declaration="src/Instrumentation/clock.hxx" implementation="src/Instrumentation/clock.cxx"/>
    <CommRadio from="SGSubsystem" declaration="src/Instrumentation/commradio.hxx"/>
    <Component from="SGSubsystem" declaration="src/Autopilot/component.hxx" implementation="src/Autopilot/component.cxx"/>
    <DCLGPS from="SGSubsystem" declaration="src/Instrumentation/dclgps.hxx" implementation="src/Instrumentation/dclgps.cxx"/>
    <DME from="SGSubsystem" declaration="src/Instrumentation/dme.hxx" implementation="src/Instrumentation/dme.cxx"/>
    <Ephemeris from="SGSubsystem" declaration="src/Environment/ephemeris.hxx" implementation="src/Environment/ephemeris.cxx"/>
    <FDMShell from="SGSubsystem" declaration="src/FDM/fdm_shell.hxx" implementation="src/FDM/fdm_shell.cxx"/>
    <FGAIManager from="SGSubsystem" declaration="src/AIModel/AIManager.hxx" implementation="src/AIModel/AIManager.cxx"/>
    <FGATCManager from="SGSubsystem" declaration="src/ATC/atc_mgr.hxx" implementation="src/ATC/atc_mgr.cxx"/>
    <FGAircraftModel from="SGSubsystem" declaration="src/Model/acmodel.hxx" implementation="src/Model/acmodel.cxx"/>
    <FGCom from="SGSubsystem" declaration="src/Network/fgcom.hxx" implementation="src/Network/fgcom.cxx"/>
    <FGControls from="SGSubsystem" declaration="src/Aircraft/controls.hxx" implementation="src/Aircraft/controls.cxx"/>
    <FGDNSClient from="SGSubsystem" declaration="src/Network/DNSClient.hxx" implementation="src/Network/DNSClient.cxx"/>
    <FGElectricalSystem from="SGSubsystem" declaration="src/Systems/electrical.hxx" implementation="src/Systems/electrical.cxx"/>
    <FGEventInput from="SGSubsystem" declaration="src/Input/FGEventInput.hxx" implementation="src/Input/FGEventInput.cxx"/>
    <FGFlightHistory from="SGSubsystem" declaration="src/Aircraft/FlightHistory.hxx" implementation="src/Aircraft/FlightHistory.cxx"/>
    <FGHTTPClient from="SGSubsystem" declaration="src/Network/HTTPClient.hxx" implementation="src/Network/HTTPClient.cxx"/>
    <FGHttpd from="SGSubsystem" declaration="src/Network/http/httpd.hxx"/>
    <FGIO from="SGSubsystem" declaration="src/Main/fg_io.hxx" implementation="src/Main/fg_io.cxx"/>
    <FGInterface from="SGSubsystem" declaration="src/FDM/flight.hxx" implementation="src/FDM/flight.cxx"/>
    <FGJoystickInput from="SGSubsystem" declaration="src/Input/FGJoystickInput.hxx" implementation="src/Input/FGJoystickInput.cxx"/>
    <FGKR_87 from="SGSubsystem" declaration="src/Instrumentation/kr_87.hxx" implementation="src/Instrumentation/kr_87.cxx"/>
    <FGKeyboardInput from="SGSubsystem" declaration="src/Input/FGKeyboardInput.hxx" implementation="src/Input/FGKeyboardInput.cxx"/>
    <FGLight from="SGSubsystem" declaration="src/Time/light.hxx" implementation="src/Time/light.cxx"/>
    <FGLogger from="SGSubsystem" declaration="src/Main/logger.hxx" implementation="src/Main/logger.cxx"/>
    <FGMagVarManager from="SGSubsystem" declaration="src/Environment/magvarmanager.hxx" implementation="src/Environment/magvarmanager.cxx"/>
    <FGMarkerBeacon from="SGSubsystem" declaration="src/Instrumentation/marker_beacon.hxx" implementation="src/Instrumentation/marker_beacon.cxx"/>
    <FGModelMgr from="SGSubsystem" declaration="src/Model/modelmgr.hxx" implementation="src/Model/modelmgr.cxx"/>
    <FGMouseInput from="SGSubsystem" declaration="src/Input/FGMouseInput.hxx" implementation="src/Input/FGMouseInput.cxx"/>
    <FGMultiplayMgr from="SGSubsystem" declaration="src/MultiPlayer/multiplaymgr.hxx" implementation="src/MultiPlayer/multiplaymgr.cxx"/>
    <FGNasalSys from="SGSubsystem" declaration="src/Scripting/NasalSys.hxx" implementation="src/Scripting/NasalSys.cxx"/>
    <FGNavRadio from="SGSubsystem" declaration="src/Instrumentation/navradio.hxx" implementation="src/Instrumentation/navradio.cxx"/>
    <FGPanel from="SGSubsystem" declaration="utils/fgpanel/FGPanel.hxx" implementation="utils/fgpanel/FGPanel.cxx"/>
    <FGPanelProtocol from="SGSubsystem" declaration="utils/fgpanel/FGPanelProtocol.hxx" implementation="utils/fgpanel/FGPanelProtocol.cxx"/>
    <FGPrecipitationMgr from="SGSubsystem" declaration="src/Environment/precipitation_mgr.hxx" implementation="src/Environment/precipitation_mgr.cxx"/>
    <FGProperties from="SGSubsystem" declaration="src/Main/fg_props.hxx" implementation="src/Main/fg_props.cxx"/>
    <FGReplay from="SGSubsystem" declaration="src/Aircraft/replay.hxx" implementation="src/Aircraft/replay.cxx"/>
    <FGRidgeLift from="SGSubsystem" declaration="src/Environment/ridge_lift.hxx" implementation="src/Environment/ridge_lift.cxx"/>
    <FGRouteMgr from="SGSubsystem" declaration="src/Autopilot/route_mgr.hxx" implementation="src/Autopilot/route_mgr.cxx"/>
    <FGScenery from="SGSubsystem" declaration="src/Scenery/scenery.hxx" implementation="src/Scenery/scenery.cxx"/>
    <FGSoundManager from="SGSubsystem" declaration="src/Sound/soundmanager.hxx" implementation="src/Sound/soundmanager.cxx"/>
    <FGSubmodelMgr from="SGSubsystem" declaration="src/AIModel/submodel.hxx" implementation="src/AIModel/submodel.cxx"/>
    <FGSubsystemExample from="SGSubsystem" declaration="docs-mini/README.introduction" implementation="docs-mini/README.introduction"/>
    <FGTrafficManager from="SGSubsystem" declaration="src/Traffic/TrafficMgr.hxx" implementation="src/Traffic/TrafficMgr.cxx"/>
    <FGViewMgr from="SGSubsystem" declaration="src/Viewer/viewmgr.hxx" implementation="src/Viewer/viewmgr.cxx"/>
    <FGVoiceMgr from="SGSubsystem" declaration="src/Sound/voice.hxx" implementation="src/Sound/voice.cxx"/>
    <GPS from="SGSubsystem" declaration="src/Instrumentation/gps.hxx" implementation="src/Instrumentation/gps.cxx"/>
    <GSDI from="SGSubsystem" declaration="src/Instrumentation/gsdi.hxx" implementation="src/Instrumentation/gsdi.cxx"/>
    <GUIMgr from="SGSubsystem" declaration="src/Canvas/gui_mgr.hxx" implementation="src/Canvas/gui_mgr.cxx"/>
    <GroundRadar from="SGSubsystem" declaration="src/Cockpit/groundradar.hxx" implementation="src/Cockpit/groundradar.cxx"/>
    <HUD from="SGSubsystem" declaration="src/Instrumentation/HUD/HUD.hxx" implementation="src/Instrumentation/HUD/HUD.cxx"/>
    <HeadingIndicator from="SGSubsystem" declaration="src/Instrumentation/heading_indicator.hxx" implementation="src/Instrumentation/heading_indicator.cxx"/>
    <HeadingIndicatorDG from="SGSubsystem" declaration="src/Instrumentation/heading_indicator_dg.hxx" implementation="src/Instrumentation/heading_indicator_dg.cxx"/>
    <HeadingIndicatorFG from="SGSubsystem" declaration="src/Instrumentation/heading_indicator_fg.hxx" implementation="src/Instrumentation/heading_indicator_fg.cxx"/>
    <InstVerticalSpeedIndicator from="SGSubsystem" declaration="src/Instrumentation/inst_vertical_speed_indicator.hxx" implementation="src/Instrumentation/inst_vertical_speed_indicator.cxx"/>
    <LayerInterpolateController from="SGSubsystem" declaration="src/Environment/environment_ctrl.hxx"/>
    <MK_VIII from="SGSubsystem" declaration="src/Instrumentation/mk_viii.hxx" implementation="src/Instrumentation/mk_viii.cxx"/>
    <MagCompass from="SGSubsystem" declaration="src/Instrumentation/mag_compass.hxx" implementation="src/Instrumentation/mag_compass.cxx"/>
    <MasterReferenceGyro from="SGSubsystem" declaration="src/Instrumentation/mrg.hxx" implementation="src/Instrumentation/mrg.cxx"/>
    <NavDisplay from="SGSubsystem" declaration="src/Cockpit/NavDisplay.hxx" implementation="src/Cockpit/NavDisplay.cxx"/>
    <NavRadio from="SGSubsystem" declaration="src/Instrumentation/newnavradio.hxx"/>
    <NewGUI from="SGSubsystem" declaration="src/GUI/new_gui.hxx" implementation="src/GUI/new_gui.cxx"/>
    <PerformanceDB from="SGSubsystem" declaration="src/AIModel/performancedb.hxx" implementation="src/AIModel/performancedb.cxx"/>
    <PitotSystem from="SGSubsystem" declaration="src/Systems/pitot.hxx" implementation="src/Systems/pitot.cxx"/>
    <PropertyBasedMgr from="SGSubsystem" declaration="simgear/props/PropertyBasedMgr.hxx" implementation="simgear/props/PropertyBasedMgr.cxx"/>
    <PropertyInterpolationMgr from="SGSubsystem" declaration="simgear/props/PropertyInterpolationMgr.hxx" implementation="simgear/props/PropertyInterpolationMgr.cxx"/>
    <RadarAltimeter from="SGSubsystem" declaration="src/Instrumentation/rad_alt.hxx" implementation="src/Instrumentation/rad_alt.cxx"/>
    <RealWxController from="SGSubsystem" declaration="src/Environment/realwx_ctrl.hxx" implementation="src/Environment/realwx_ctrl.cxx"/>
    <SGEventMgr from="SGSubsystem" declaration="simgear/structure/event_mgr.hxx" implementation="simgear/structure/event_mgr.cxx"/>
    <SGInterpolator from="SGSubsystem" declaration="simgear/misc/interpolator.hxx" implementation="simgear/misc/interpolator.cxx"/>
    <SGPerformanceMonitor from="SGSubsystem" declaration="simgear/structure/SGPerfMon.hxx" implementation="simgear/structure/SGPerfMon.cxx"/>
    <SGSoundMgr from="SGSubsystem" declaration="simgear/sound/soundmgr.hxx"/>
    <SGSubsystemMgr from="SGSubsystem" declaration="simgear/structure/subsystem_mgr.hxx" implementation="simgear/structure/subsystem_mgr.cxx"/>
    <SGTerraSync from="SGSubsystem" declaration="simgear/scene/tsync/terrasync.hxx" implementation="simgear/scene/tsync/terrasync.cxx"/>
    <SlipSkidBall from="SGSubsystem" declaration="src/Instrumentation/slip_skid_ball.hxx" implementation="src/Instrumentation/slip_skid_ball.cxx"/>
    <StaticSystem from="SGSubsystem" declaration="src/Systems/static.hxx" implementation="src/Systems/static.cxx"/>
    <TACAN from="SGSubsystem" declaration="src/Instrumentation/tacan.hxx" implementation="src/Instrumentation/tacan.cxx"/>
    <TCAS from="SGSubsystem" declaration="src/Instrumentation/tcas.hxx" implementation="src/Instrumentation/tcas.cxx"/>
    <TimeManager from="SGSubsystem" declaration="src/Time/TimeManager.hxx" implementation="src/Time/TimeManager.cxx"/>
    <Transponder from="SGSubsystem" declaration="src/Instrumentation/transponder.hxx" implementation="src/Instrumentation/transponder.cxx"/>
    <TurnIndicator from="SGSubsystem" declaration="src/Instrumentation/turn_indicator.hxx" implementation="src/Instrumentation/turn_indicator.cxx"/>
    <VacuumSystem from="SGSubsystem" declaration="src/Systems/vacuum.hxx" implementation="src/Systems/vacuum.cxx"/>
    <VerticalSpeedIndicator from="SGSubsystem" declaration="src/Instrumentation/vertical_speed_indicator.hxx" implementation="src/Instrumentation/vertical_speed_indicator.cxx"/>
    <View from="SGSubsystem" declaration="src/Viewer/view.hxx" implementation="src/Viewer/view.cxx"/>
    <wxRadarBg from="SGSubsystem" declaration="src/Cockpit/wxradar.hxx" implementation="src/Cockpit/wxradar.cxx"/>
  </primary_subsystems>
  <primary_groups count="8">
    <Autopilot from="SGSubsystemGroup : SGSubsystem" declaration="src/Autopilot/autopilot.hxx" implementation="src/Autopilot/autopilot.cxx"/>
    <CockpitDisplayManager from="SGSubsystemGroup : SGSubsystem" declaration="src/Cockpit/cockpitDisplayManager.hxx" implementation="src/Cockpit/cockpitDisplayManager.cxx"/>
    <FGEnvironmentMgr from="SGSubsystemGroup : SGSubsystem" declaration="src/Environment/environment_mgr.hxx" implementation="src/Environment/environment_mgr.cxx"/>
    <FGInput from="SGSubsystemGroup : SGSubsystem" declaration="src/Input/input.hxx" implementation="src/Input/input.cxx"/>
    <FGInstrumentMgr from="SGSubsystemGroup : SGSubsystem" declaration="src/Instrumentation/instrument_mgr.hxx" implementation="src/Instrumentation/instrument_mgr.cxx"/>
    <FGSystemMgr from="SGSubsystemGroup : SGSubsystem" declaration="src/Systems/system_mgr.hxx" implementation="src/Systems/system_mgr.cxx"/>
    <FGXMLAutopilotGroup from="SGSubsystemGroup : SGSubsystem" declaration="src/Autopilot/autopilotgroup.hxx" implementation="src/Autopilot/autopilotgroup.cxx"/>
    <TerrainSampler from="SGSubsystemGroup : SGSubsystem" declaration="src/Environment/terrainsampler.hxx"/>
  </primary_groups>
  <secondary_subsystems count="28">
    <AnalogComponent from="Component : SGSubsystem" declaration="src/Autopilot/analogcomponent.hxx" implementation="src/Autopilot/analogcomponent.cxx"/>
    <BasicRealWxController from="RealWxController : SGSubsystem" declaration="src/Environment/realwx_ctrl.cxx" implementation="src/Environment/realwx_ctrl.cxx"/>
    <CanvasMgr from="PropertyBasedMgr : SGSubsystem" declaration="simgear/canvas/CanvasMgr.hxx" implementation="simgear/canvas/CanvasMgr.cxx"/>
    <CommRadioImpl from="CommRadio : SGSubsystem" declaration="src/Instrumentation/commradio.cxx" implementation="src/Instrumentation/commradio.cxx"/>
    <DigitalComponent from="Component : SGSubsystem" declaration="src/Autopilot/digitalcomponent.hxx" implementation="src/Autopilot/digitalcomponent.cxx"/>
    <FGACMS from="FGInterface : SGSubsystem" declaration="src/FDM/SP/ACMS.hxx" implementation="src/FDM/SP/ACMS.cxx"/>
    <FGADA from="FGInterface : SGSubsystem" declaration="src/FDM/SP/ADA.hxx" implementation="src/FDM/SP/ADA.cxx"/>
    <FGAISim from="FGInterface : SGSubsystem" declaration="src/FDM/SP/AISim.hpp" implementation="src/FDM/SP/AISim.cpp"/>
    <FGBalloonSim from="FGInterface : SGSubsystem" declaration="src/FDM/SP/Balloon.h" implementation="src/FDM/SP/Balloon.cxx"/>
    <FGExternalNet from="FGInterface : SGSubsystem" declaration="src/FDM/ExternalNet/ExternalNet.hxx" implementation="src/FDM/ExternalNet/ExternalNet.cxx"/>
    <FGExternalPipe from="FGInterface : SGSubsystem" declaration="src/FDM/ExternalPipe/ExternalPipe.hxx" implementation="src/FDM/ExternalPipe/ExternalPipe.cxx"/>
    <FGHIDEventInput from="FGEventInput : SGSubsystem" declaration="src/Input/FGHIDEventInput.hxx" implementation="src/Input/FGHIDEventInput.cxx"/>
    <FGJSBsim from="FGInterface : SGSubsystem" declaration="src/FDM/JSBSim/JSBSim.hxx" implementation="src/FDM/JSBSim/JSBSim.cxx"/>
    <FGLaRCsim from="FGInterface : SGSubsystem" declaration="src/FDM/LaRCsim/LaRCsim.hxx" implementation="src/FDM/LaRCsim/LaRCsim.cxx"/>
    <FGLinuxEventInput from="FGEventInput : SGSubsystem" declaration="src/Input/FGLinuxEventInput.hxx" implementation="src/Input/FGLinuxEventInput.cxx"/>
    <FGMacOSXEventInput from="FGEventInput : SGSubsystem" declaration="src/Input/FGMacOSXEventInput.hxx" implementation="src/Input/FGMacOSXEventInput.cxx"/>
    <FGMagicCarpet from="FGInterface : SGSubsystem" declaration="src/FDM/SP/MagicCarpet.hxx" implementation="src/FDM/SP/MagicCarpet.cxx"/>
    <FGNullFDM from="FGInterface : SGSubsystem" declaration="src/FDM/NullFDM.hxx" implementation="src/FDM/NullFDM.cxx"/>
    <FGReadablePanel from="FGPanel : SGSubsystem" declaration="utils/fgpanel/panel_io.hxx" implementation="utils/fgpanel/panel_io.cxx"/>
    <FGSoundManager from="SGSoundMgr : SGSubsystem" declaration="src/Sound/soundmanager.hxx" implementation="src/Sound/soundmanager.cxx"/>
    <FGUFO from="FGInterface : SGSubsystem" declaration="src/FDM/UFO.hxx" implementation="src/FDM/UFO.cxx"/>
    <KLN89 from="DCLGPS : SGSubsystem" declaration="src/Instrumentation/KLN89/kln89.hxx" implementation="src/Instrumentation/KLN89/kln89.cxx"/>
    <LayerInterpolateControllerImplementation from="LayerInterpolateController : SGSubsystem" declaration="src/Environment/environment_ctrl.cxx" implementation="src/Environment/environment_ctrl.cxx"/>
    <MongooseHttpd from="FGHttpd : SGSubsystem" declaration="src/Network/http/httpd.cxx" implementation="src/Network/http/httpd.cxx"/>
    <NavRadioImpl from="NavRadio : SGSubsystem" declaration="src/Instrumentation/newnavradio.cxx" implementation="src/Instrumentation/newnavradio.cxx"/>
    <StateMachineComponent from="Component : SGSubsystem" declaration="src/Autopilot/autopilot.cxx" implementation="src/Autopilot/autopilot.cxx"/>
    <YASim from="FGInterface : SGSubsystem" declaration="src/FDM/YASim/YASim.hxx" implementation="src/FDM/YASim/YASim.cxx"/>
    <agRadar from="wxRadarBg : SGSubsystem" declaration="src/Cockpit/agradar.hxx" implementation="src/Cockpit/agradar.cxx"/>
  </secondary_subsystems>
  <secondary_groups count="2">
    <FGXMLAutopilotGroupImplementation from="FGXMLAutopilotGroup : SGSubsystemGroup : SGSubsystem" declaration="src/Autopilot/autopilotgroup.cxx" implementation="src/Autopilot/autopilotgroup.cxx"/>
    <TerrainSamplerImplementation from="TerrainSampler : SGSubsystemGroup : SGSubsystem" declaration="src/Environment/terrainsampler.cxx" implementation="src/Environment/terrainsampler.cxx"/>
  </secondary_groups>
  <tertiary_subsystems count="6">
    <DigitalFilter from="AnalogComponent : Component : SGSubsystem" declaration="src/Autopilot/digitalfilter.hxx" implementation="src/Autopilot/digitalfilter.cxx"/>
    <Logic from="DigitalComponent : Component : SGSubsystem" declaration="src/Autopilot/logic.hxx" implementation="src/Autopilot/logic.cxx"/>
    <NoaaMetarRealWxController from="BasicRealWxController : RealWxController : SGSubsystem" declaration="src/Environment/realwx_ctrl.cxx" implementation="src/Environment/realwx_ctrl.cxx"/>
    <PIDController from="AnalogComponent : Component : SGSubsystem" declaration="src/Autopilot/pidcontroller.hxx" implementation="src/Autopilot/pidcontroller.cxx"/>
    <PISimpleController from="AnalogComponent : Component : SGSubsystem" declaration="src/Autopilot/pisimplecontroller.hxx" implementation="src/Autopilot/pisimplecontroller.cxx"/>
    <Predictor from="AnalogComponent : Component : SGSubsystem" declaration="src/Autopilot/predictor.hxx" implementation="src/Autopilot/predictor.cxx"/>
  </tertiary_subsystems>
  <quaternary_subsystems count="1">
    <FlipFlop from="Logic : DigitalComponent : Component : SGSubsystem" declaration="src/Autopilot/flipflop.hxx" implementation="src/Autopilot/flipflop.cxx"/>
  </quaternary_subsystems>
  <counts>
    <simgear>
      <subsystem_classes>9</subsystem_classes>
      <subsystem_groups>0</subsystem_groups>
      <total>9</total>
    </simgear>
    <flightgear>
      <subsystem_classes>117</subsystem_classes>
      <subsystem_groups>10</subsystem_groups>
      <total>127</total>
    </flightgear>
    <combined>
      <subsystem_classes>126</subsystem_classes>
      <subsystem_groups>10</subsystem_groups>
      <total>136</total>
    </combined>
  </counts>
</subsystems>

Refactoring

To check that all subsystems on a branch have been updated or refactored:

Python script: Python script verifying if all subsystems have been updated.

#! /usr/bin/env python3

# Python module imports.
from subprocess import PIPE, Popen

# Other module imports.
from find_subsystems import FindSubsystems


# Source code repository paths.
SIMGEAR_PATH = "/flightgear/src/flightgear-simgear"
FLIGHTGEAR_PATH = "/flightgear/src/flightgear-flightgear"


class ToUpdate:
    """Class for finding all files yet to be updated."""

    def __init__(self):
        """Find all files to be updated."""

        # First find all subsystems.
        subsystems = FindSubsystems()

        # Generate a list of files to skip.
        cmd = "cd %s;" % SIMGEAR_PATH
        cmd += "git diff --name-only ..next;"
        cmd += "cd %s;" % FLIGHTGEAR_PATH
        cmd += "git diff --name-only ..next"
        pipe = Popen(cmd, shell=True, stdout=PIPE)
        blacklist = []
        for line in pipe.stdout.readlines():
            file_name = line.decode()
            file_name = file_name.strip()
            blacklist.append(file_name)

        # Loop over all derived classes.
        print("\nYet to be updated:")
        for storage_list in subsystems.subsystems + subsystems.groups:
            for subsystem in storage_list:
                if subsystem.file_name not in blacklist:
                    print("    %s: %s" % (subsystem.file_name, subsystem))



# Instantiate the class if run as a script.
if __name__ == "__main__":
    ToUpdate()