33 lines
1.4 KiB
Python
33 lines
1.4 KiB
Python
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from re import fullmatch, Pattern
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from urllib import request as http
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from urllib.error import HTTPError
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def fetch_version(url: str) -> str:
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"""
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Retrieve the latest webpicdownloader version available.
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* :url: -> Url of the "VERSION" file on the repository.
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* RETURN -> the latests 'VERSION' file content.
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* THROWABLE -> can raise HTTP or URL error see urllib doc.
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"""
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headers = {'User-Agent': "Mozilla/5.0 (Windows NT 11.0; Win64; x64) AppleWebKit/605.1.15 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/604.1"}
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request = http.Request(url=url, headers=headers, method='GET')
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response = http.urlopen(request)
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if response.getcode() != 200:
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raise HTTPError("Bad response returned by server")
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return response.read().decode('utf-8')
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def is_new_version_available(version_current: str, version_url: str, version_pattern: Pattern) -> bool:
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"""
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Verify if a new version is available.
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* :current: -> Current version
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* :version_url: -> Url of the VERSION file on the repository.
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* :version_pattern: -> Patter to match version retrieved with the version_url.
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* RETURN -> True means a new version is available, False else.
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"""
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version = fetch_version(version_url)
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if not fullmatch(version_pattern, version):
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raise ValueError('The version retrieved from the remote server is not valid')
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return version_current != version
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