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#!/usr/bin/env python
# Copyright 2016 Free Software Foundation, Inc.
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
import os
import sys
GR_IMPORT_ERROR_MESSAGE = """\
Cannot import gnuradio.
Is the Python path environment variable set correctly?
All OS: PYTHONPATH
Is the library path environment variable set correctly?
Linux: LD_LIBRARY_PATH
Windows: PATH
See https://wiki.gnuradio.org/index.php/ModuleNotFoundError
"""
def die(error, message):
msg = "{0}\n\n({1})".format(message, error)
try:
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
d = Gtk.MessageDialog(
message_type=Gtk.MessageType.ERROR,
buttons=Gtk.ButtonsType.CLOSE,
text=msg,
)
d.set_title(type(error).__name__)
d.run()
sys.exit(1)
except ImportError:
sys.exit(type(error).__name__ + '\n\n' + msg)
except Exception as _exception:
print(
"While trying to display an error message, another error occurred",
file=sys.stderr)
print(_exception, file=sys.stderr)
print("The original error message follows.", file=sys.stderr)
sys.exit(type(error).__name__ + '\n\n' + msg)
def check_gtk():
try:
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('PangoCairo', '1.0')
gi.require_foreign('cairo', 'Context')
from gi.repository import Gtk
success = Gtk.init_check()[0]
if not success:
# Don't display a warning dialogue. This seems to be a Gtk bug. If it
# still can display warning dialogues, it does probably work!
print(
"Gtk init_check failed. GRC might not be able to start a GUI.",
file=sys.stderr)
except Exception as err:
die(err, "Failed to initialize GTK. If you are running over ssh, "
"did you enable X forwarding and start ssh with -X?")
def check_gnuradio_import():
try:
from gnuradio import gr
except ImportError as err:
die(err, GR_IMPORT_ERROR_MESSAGE)
def check_blocks_path():
if 'GR_DONT_LOAD_PREFS' in os.environ and not os.environ.get('GRC_BLOCKS_PATH', ''):
die(EnvironmentError("No block definitions available"),
"Can't find block definitions. Use config.conf or GRC_BLOCKS_PATH.")
def run_main():
script_path = os.path.dirname(os.path.abspath(__file__))
source_tree_subpath = "/grc/scripts"
if not script_path.endswith(source_tree_subpath):
# run the installed version
from gnuradio.grc.main import main
else:
print("Running from source tree")
sys.path.insert(1, script_path[:-len(source_tree_subpath)])
from grc.main import main
sys.exit(main())
if __name__ == '__main__':
check_gnuradio_import()
check_gtk()
check_blocks_path()
run_main()
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