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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,61 +1,13 @@ | ||
| import re | ||
| from datetime import datetime | ||
| from dateutil import parser | ||
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| class DateUtils: | ||
| # Regex patterns to match the date string formats | ||
| # example: "Mon, 18 Sep 2023 23:13:36 UTC" | ||
| date_pattern1 = r'^[A-Za-z]{3}, \d{2} [A-Za-z]{3} \d{4} \d{2}:\d{2}:\d{2} UTC$' | ||
| # example: "2023-09-18T23:13:36+00:00" | ||
| date_pattern2 = r'^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}[\+\-]\d{2}:\d{2}$' | ||
| # example: "2023-09-18 23:13:36.186029+00" | ||
| date_pattern3 = r'^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{6}[\+\-]\d{2}$' | ||
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| class DateParseException(Exception): | ||
| """Custom exception for date parsing errors""" | ||
| pass | ||
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| @staticmethod | ||
| def parse_date(date_str): | ||
| parsed_date = None | ||
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| # Check if the date string matches the first pattern | ||
| if re.match(DateUtils.date_pattern1, date_str): | ||
| try: | ||
| # If it matches, parse the date string with the first format | ||
| parsed_date = datetime.strptime(date_str, '%a, %d %b %Y %H:%M:%S %Z') | ||
| except ValueError as e: | ||
| raise DateUtils.DateParseException(f"Error parsing date with format '%a, %d %b %Y %H:%M:%S %Z': {e}") | ||
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| # Check if the date string matches the second pattern | ||
| elif re.match(DateUtils.date_pattern2, date_str): | ||
| try: | ||
| # If it matches, parse the date string with the second format | ||
| parsed_date = datetime.strptime(date_str, '%Y-%m-%dT%H:%M:%S%z') | ||
| except ValueError as e: | ||
| raise DateUtils.DateParseException(f"Error parsing date with format '%Y-%m-%dT%H:%M:%S%z': {e}") | ||
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| # Check if the date string matches the third pattern | ||
| elif re.match(DateUtils.date_pattern3, date_str): | ||
| try: | ||
| # If it matches, parse the date string with the third format | ||
| parsed_date = datetime.strptime(date_str, '%Y-%m-%d %H:%M:%S.%f%z') | ||
| except ValueError as e: | ||
| raise DateUtils.DateParseException(f"Error parsing date with format '%Y-%m-%d %H:%M:%S.%f%z': {e}") | ||
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| # If no match for the predefined patterns, try to parse with datetime.fromisoformat | ||
| else: | ||
| try: | ||
| parsed_date = datetime.fromisoformat(date_str) | ||
| except ValueError as e: | ||
| raise DateUtils.DateParseException(f"Error parsing date with datetime.fromisoformat: {e}") | ||
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| if parsed_date is None: | ||
| raise DateUtils.DateParseException(f"Unable to parse date: {date_str}") | ||
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| return parsed_date | ||
| return parser.parse(date_str) | ||
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| @staticmethod | ||
| def parse_date_string(date_str, output_date_format): | ||
| parsed_date = DateUtils.parse_date(date_str) | ||
| parsed_date = parser.parse(date_str) | ||
| return parsed_date.strftime(output_date_format) |