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functions: improve error handling while loading DPMS

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This commit is contained in:
Alfredo Monclus 2024-06-07 15:36:13 -03:00
parent e8cc5cd591
commit ccd8fd9fcc
1 changed files with 22 additions and 16 deletions
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38
ks_includes/functions.py
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@ -27,28 +27,34 @@ try:
def get_DPMS_state(display_name_in_byte_string=b':0'):
state = DPMS_State.Fail
if not isinstance(display_name_in_byte_string, bytes):
raise TypeError
display_name = ctypes.c_char_p()
display_name.value = display_name_in_byte_string
raise TypeError("display_name_in_byte_string must be of type bytes")
display_name = ctypes.c_char_p(display_name_in_byte_string)
libXext.XOpenDisplay.restype = ctypes.c_void_p
display = ctypes.c_void_p(libXext.XOpenDisplay(display_name))
dummy1_i_p = ctypes.create_string_buffer(8)
dummy2_i_p = ctypes.create_string_buffer(8)
major_opcode_p = ctypes.create_string_buffer(8)
first_event_p = ctypes.create_string_buffer(8)
if display.value:
if libXext.DPMSQueryExtension(display, dummy1_i_p, dummy2_i_p) \
and libXext.DPMSCapable(display):
onoff_p = ctypes.create_string_buffer(1)
state_p = ctypes.create_string_buffer(2)
if libXext.DPMSInfo(display, state_p, onoff_p):
onoff = struct.unpack('B', onoff_p.raw)[0]
if onoff:
state = struct.unpack('H', state_p.raw)[0]
libXext.XCloseDisplay(display)
try:
if libXext.DPMSQueryExtension(display, major_opcode_p, first_event_p) \
and libXext.DPMSCapable(display):
onoff_p = ctypes.create_string_buffer(1)
state_p = ctypes.create_string_buffer(2)
if libXext.DPMSInfo(display, state_p, onoff_p):
onoff = struct.unpack('B', onoff_p.raw)[0]
if onoff:
state = struct.unpack('H', state_p.raw)[0]
finally:
libXext.XCloseDisplay(display)
return state
dpms_loaded = True
except Exception as msg:
logging.error(f"Couldn't load DPMS: {msg}")
except OSError as e:
logging.error(f"Couldn't load DPMS library: {e}")
except Exception as e:
logging.error(f"An unexpected error occurred: {e}")
def get_software_version():