[GCS] Add wrapper to launch GCS. (#2855)

conf/tools/pprzgcs.xml

@@ -1,2 +1,2 @@
-<program command="$pprzgcs" name="PprzGCS" />
+<program command="sw/tools/gcs_launch.py" name="PprzGCS" />
 

sw/supervision/pc_control_panel.ml

@@ -257,8 +257,8 @@ let supervision = fun ?file gui log (ac_combo : Gtk_tools.combo) (target_combo :
   in
 
   let run_gcs = fun () ->
-    let args = get_program_args (Hashtbl.find programs "GCS") in
-    run_and_monitor ?file gui log "GCS" args in
+    let args = get_program_args (Hashtbl.find programs "PprzGCS") in
+    run_and_monitor ?file gui log "PprzGCS" args in
   let run_server = fun args -> run_and_monitor ?file gui log "Server" args in
   let choose_and_run_sitl = fun ac_name ->
     let get_args = fun simtype ac_name ->

sw/tools/gcs_launch.py

@@ -0,0 +1,73 @@
+#! /usr/bin/env python3
+from optparse import OptionParser, OptionGroup, OptionValueError
+import subprocess
+from os import getenv, path, execvp
+
+HOME = getenv("PAPARAZZI_HOME", path.normpath(path.join(path.dirname(path.abspath(__file__)), '../../')))
+LEGACY_GCS_PATH = path.join(HOME, "sw", "ground_segment", "cockpit", "gcs")
+
+
+def pprzgcs_help(option, opt, value, parser):
+    try:
+        cp = subprocess.run(["pprzgcs", "-h"], capture_output=True)
+        # trim to relevant output
+        lines = cp.stdout.decode().split("\n")[4:]
+        options = "\n".join(lines)
+        print("PprzGCS options:\n\n" + options)
+        exit(0)
+    except FileNotFoundError:
+        print("PprzGCS not found!")
+        exit(1)
+
+
+def legacy_help(option, opt, value, parser):
+    try:
+        cp = subprocess.run([LEGACY_GCS_PATH, "--help"], capture_output=True)
+        # trim to relevant output
+        lines = cp.stdout.decode().split("\n")[1:]
+        options = "\n".join(lines)
+        print("Legacy GCS options:\n\n" + options)
+        exit(0)
+    except FileNotFoundError:
+        print("Legacy GCS not found!")
+        exit(1)
+
+
+def main():
+
+    usage = "usage: %prog -g <GCS type> -- [GCS arguments]\n" + \
+            "Run %prog --help to list the options."
+    parser = OptionParser(usage)
+
+    parser.add_option("-g", "--gcs", dest="gcstype",
+                      type='choice', choices=['pprzgcs', 'legacy'],
+                      action="store", help="GCS type to start: pprgcs or legacy")
+    parser.add_option("--pprzgcs_help", dest="pprzgcs_help", action="callback", callback=pprzgcs_help,
+                      help="Print help for pprzgcs")
+    parser.add_option("--legacy_help", dest="legacy_help", action="callback", callback=legacy_help,
+                      help="Print help for legacy GCS")
+
+    (options, args) = parser.parse_args()
+
+    def run_gcs(cmd, args, error_msg):
+        try:
+            args = [cmd] + args
+            print("Running \"" + " ".join(args) + "\"")
+            execvp(cmd, args)
+        except FileNotFoundError:
+            print(error_msg)
+
+    if options.gcstype == "pprzgcs":
+        run_gcs("pprzgcs", args, "PprzGCS not found!")
+    elif options.gcstype == "legacy":
+        run_gcs(LEGACY_GCS_PATH, args, "Legacy GCS not found!")
+    elif options.gcstype is None:
+        run_gcs("pprzgcs", args, "PprzGCS not found!")
+        run_gcs(LEGACY_GCS_PATH, args, "Legacy GCS not found!")
+
+
+if __name__ == "__main__":
+    main()
+
+
+