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cnc@15ALC7:~$ ls -1 /sys/class/net/ | grep -v lo | xargs -I{} bash -c 'echo -n {} :" " ; basename `readlink -f /sys/class/net/{}/device/driver`'
enxc84d44297a21 : r8152
wlp2s0 : rtw_8822ce
cnc@15ALC7:~$ 

#!/usr/bin/env python3

from hal_glib import GStat
GSTAT = GStat()

class HandlerClass:

    def __init__(self, halcomp, builder, useropts):
        self.builder = builder
        GSTAT.connect("graphics-gcode-properties", self.gcode_properties)
        GSTAT.connect("file-loaded", self.file_loaded)
        GSTAT.connect("line-changed", self.line_changed)

    def gcode_properties(self, obj, data):
        print("[VCP] G-code properties:", data["name"], data["size"].replace("\n",", "))
        
    def file_loaded(self, obj, data):
        print("[VCP] File loaded:", data)
        
    def line_changed(self, obj, data):
        print("[VCP] Line changed:", data)

def get_handlers(halcomp,builder,useropts):
    return [HandlerClass(halcomp,builder,useropts)]

USER_COMMAND_FILE = custom_init.py

def gcode_properties(obj, data, widgets):
    print("[rc] G-code properties:", data["name"], data["size"].replace("\n",", "))

def file_loaded(obj, data):
    print("[rc] File loaded:", data)
    
def line_changed(obj, data, widgets):
    print("[rc] Line changed:", data)

hal_glib.GStat().connect("graphics-gcode-properties", gcode_properties, self.widgets)
hal_glib.GStat().connect("line-changed", line_changed, self.widgets)
hal_glib.GStat().connect("file-loaded", file_loaded)

[VCP] File loaded: /home/cnc/linuxcnc/nc_files/3D_Chips.ngc
[rc] G-code properties: 3D_Chips.ngc 200509 bytes, 4714 gcode lines
[rc] File loaded: /home/cnc/linuxcnc/nc_files/3D_Chips.ngc

[rc] G-code properties: 3D_Chips.ngc 200509 bytes, 4714 gcode lines
[rc] File loaded: /home/cnc/linuxcnc/nc_files/3D_Chips.ngc

[VCP] Line changed: 24
[rc] Line changed: 24
[VCP] Line changed: 25
[rc] Line changed: 25
[rc] Line changed: 26
[VCP] Line changed: 26
...