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Fix "Device information ... not found" errors with modern libwacom versions #69

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Fix "Device information ... not found" errors with modern libwacom versions #69

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a480df1
Fix failures with libwacom >= 1.10
Jul 28, 2023
6de2d66
Be compatible with both old and versions of libwacom
Jul 30, 2023
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21 changes: 18 additions & 3 deletions wacom-gui/wacom_data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -121,10 +121,25 @@ def get_connected_tablets(self):
warning.exec_()


def __list_local_devices(self):
def aux(format_arg):
"""aux calls libwacom-list-local-devices with an optional format argument.

Returns the contents of the child's stdout, and its numeric exit code."""
p = subprocess.Popen(
"libwacom-list-local-devices --database '%s' %s" % (self.db_path, format_arg), shell=True, stdout=subprocess.PIPE
)
return p.communicate()[0], p.returncode

# This will fail for libwacom <1.10, which doesn't have the
# --format option.
stdout, returncode = aux("--format=datafile")
if returncode != 0: # Retry in <1.10 syntax
stdout, returncode = aux("")
return stdout.decode('utf-8').split('\n')

def __get_libwacom_data(self):
p = subprocess.Popen("libwacom-list-local-devices --database %s" % self.db_path, shell=True,
stdout=subprocess.PIPE)
output = p.communicate()[0].decode('utf-8').split('\n')
output = self.__list_local_devices()
cur_device = None
buttons = False
for line in output:
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