55 lines
2.0 KiB
Python
55 lines
2.0 KiB
Python
import subprocess
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import sys
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from PyQt5.QtWidgets import QMessageBox
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from .component import Component
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class Os_Label_Printer(Component):
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def __init__(self, config=None, name=None):
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super().__init__(config=config, name=name, threaded=False)
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self.simulate = False
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if "--sim-os-label-printer" in sys.argv:
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self.simulate = True
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self.platform = "windows"
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def config_changed(self):
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self.platform = self.config[self.name]["platform"]
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# for windows:
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# cmd
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# wmic printer list brief
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# powershell
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# Get-Printer
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# for cups (linux, osx)
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# lpstat -p -d
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self.printer = self.config[self.name]["printer"]
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def print_label(self, template, context=None):
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if context is None:
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context = {}
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# LOAD LABEL TEMPLATE
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with open(f"config/label_templates/{str(template)}.prn", "r", errors="surrogateescape") as f:
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label = f.read()
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# LABEL PRINT
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label = label.format(**context)
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label_file = "tmp/label.prn"
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with open(label_file, "w", errors="surrogateescape") as f:
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label = f.write(label)
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if self.platform == "windows":
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cmd = f'print /d:"{self.printer}" "{label_file}"'
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elif self.platform == "cups":
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cmd = f'lp -d "{self.printer}" "{label_file}"'
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else:
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raise NotImplementedError(f"platform {self.platform!r} is not supported")
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if not self.simulate:
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p = subprocess.run(cmd, stderr=subprocess.STDOUT, stdout=subprocess.PIPE, shell=True) # unsafe
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if p.returncode != 0:
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self.log.exception(f"failed to print: returncode: {p.returncode}\noutput:\n{p.stdout}")
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QMessageBox.critical(
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None,
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"Errore Stampante",
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f"Non e stato possibile stampare l'etichetta.\n\nErrore:\nreturncode: {p.returncode}\noutput:\n{p.stdout}"
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)
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return False
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return True
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