65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
from __future__ import absolute_import
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import os
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import appdirs
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from localconfig import config
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from . import printer
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from .exceptions import *
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class Config(object):
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_app_name = 'python-escpos'
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_config_file = 'config.ini'
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def __init__(self):
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self._has_loaded = False
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self._printer = None
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self._printer_name = None
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self._printer_config = None
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def load(self, config_path=None):
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# If they didn't pass one, load default
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if not config_path:
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config_path = os.path.join(
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appdirs.user_config_dir(self._app_name),
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self._config_file
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)
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# Deal with one config or a list of them
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# Configparser does this, but I need it for the list in the error message
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if isinstance(config_path, basestring):
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config_path = [config_path]
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files_read = config.read(config_path)
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if not files_read:
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raise ConfigNotFoundError('Couldn\'t read config at one or more of {config_path}'.format(
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config_path="\n".join(config_path),
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))
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if 'printer' in config:
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# For some reason, dict(config.printer) raises
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# TypeError: attribute of type 'NoneType' is not callable
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self._printer_config = dict(list(config.printer))
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self._printer_name = self._printer_config.pop('type').title()
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if not self._printer_name or not hasattr(printer, self._printer_name):
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raise ConfigSyntaxError('Printer type "{printer_name}" is invalid'.format(
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printer_name=self._printer_name,
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))
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self._has_loaded = True
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def printer(self):
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if not self._has_loaded:
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self.load()
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if not self._printer:
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# We could catch init errors and make them a ConfigSyntaxError,
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# but I'll just let them pass
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self._printer = getattr(printer, self._printer_name)(**self._printer_config)
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return self._printer
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