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"""
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BasicNeeds - useful functions library
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4
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This library has functions useful to keep main logic short and simple
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"""
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# package to handle date and times
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from datetime import datetime, timedelta
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8
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# package to add support for multi-language (i18n)
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import gettext
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10
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# package to handle files/folders and related metadata/operations
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import os
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# package regular expressions
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import re
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14
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15
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class BasicNeeds:
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lcl = None
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def __init__(self, default_language='en_US'):
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current_script = os.path.basename(__file__).replace('.py', '')
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lang_folder = os.path.join(os.path.dirname(__file__), current_script + '_Locale')
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self.lcl = gettext.translation(current_script, lang_folder, languages=[default_language])
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def fn_check_inputs(self, input_parameters):
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if input_parameters.output_log_file is not None:
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# checking log folder first as there's all further messages will be stored
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self.fn_validate_single_value(os.path.dirname(input_parameters.output_log_file),
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'folder', self.lcl.gettext('log file'))
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def fn_final_message(self, local_logger, log_file_name, performance_in_seconds):
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total_time_string = str(timedelta(seconds=performance_in_seconds))
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if log_file_name == 'None':
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self.fn_timestamped_print(self.lcl.gettext( \
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'Application finished, whole script took {total_time_string}') \
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.replace('{total_time_string}', total_time_string))
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else:
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local_logger.info(self.lcl.gettext('Total execution time was {total_time_string}') \
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.replace('{total_time_string}', total_time_string))
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self.fn_timestamped_print(self.lcl.gettext( \
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'Application finished, for complete logged details please check {log_file_name}')
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.replace('{log_file_name}', log_file_name))
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@staticmethod
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def fn_multi_line_string_to_single_line(input_string):
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string_to_return = input_string.replace('\n', ' ').replace('\r', ' ')
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return re.sub(r'\s{2,100}', ' ', string_to_return).replace(' , ', ', ').strip()
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@staticmethod
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def fn_numbers_with_leading_zero(input_number_as_string, digits):
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final_number = input_number_as_string
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if len(input_number_as_string) < digits:
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final_number = '0' * (digits - len(input_number_as_string)) + input_number_as_string
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return final_number
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def fn_optional_print(self, boolean_variable, string_to_print):
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if boolean_variable:
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self.fn_timestamped_print(string_to_print)
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@staticmethod
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def fn_timestamped_print(string_to_print):
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print(datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S.%f %Z") + ' - ' + string_to_print)
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def fn_validate_one_value(self, value_to_validate, validation_type, name_meaning):
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is_invalid = False
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message = ''
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if validation_type == 'file':
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is_invalid = (not os.path.isfile(value_to_validate))
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message = self.lcl.gettext( \
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'Given file "{value_to_validate}" does not exist') \
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.replace('{value_to_validate}', value_to_validate)
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elif validation_type == 'folder':
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is_invalid = (not os.path.isdir(value_to_validate))
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message = self.lcl.gettext( \
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'Given folder "{value_to_validate}" does not exist') \
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.replace('{value_to_validate}', value_to_validate)
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elif validation_type == 'url':
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url_reg_expression = 'https?://(?:www)?(?:[\\w-]{2,255}(?:\\.\\w{2,66}){1,2})'
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is_invalid = (not re.match(url_reg_expression, value_to_validate))
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message = self.lcl.gettext( \
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'Given url "{value_to_validate}" is not valid') \
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.replace('{value_to_validate}', value_to_validate)
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return {
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'is_invalid': is_invalid,
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'message': message,
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}
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86
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87
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def fn_validate_single_value(self, value_to_validate, validation_type, name_meaning):
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88
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validation_details = self.fn_validate_one_value(value_to_validate, validation_type,
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name_meaning)
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if validation_details['is_invalid']:
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self.fn_timestamped_print(validation_details['message'])
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exit(1)
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93
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danielgp /
db-extractor
