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107 lines
2.8 KiB
107 lines
2.8 KiB
# -*- coding: utf-8 -*-
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# Copyright 2015-2019 Mike Fährmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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"""Exception classes used by gallery-dl
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Class Hierarchy:
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Exception
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+-- GalleryDLException
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+-- ExtractionError
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| +-- AuthenticationError
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| +-- AuthorizationError
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| +-- NotFoundError
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| +-- HttpError
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+-- FormatError
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| +-- FilenameFormatError
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| +-- DirectoryFormatError
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+-- FilterError
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+-- NoExtractorError
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+-- StopExtraction
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"""
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class GalleryDLException(Exception):
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"""Base class for GalleryDL exceptions"""
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default = None
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msgfmt = None
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code = 1
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def __init__(self, message=None):
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if not message:
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message = self.default
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elif isinstance(message, Exception):
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message = "{}: {}".format(message.__class__.__name__, message)
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if self.msgfmt:
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message = self.msgfmt.format(message)
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Exception.__init__(self, message)
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class ExtractionError(GalleryDLException):
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"""Base class for exceptions during information extraction"""
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class HttpError(ExtractionError):
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"""HTTP request during data extraction failed"""
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default = "HTTP request failed"
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code = 4
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class NotFoundError(ExtractionError):
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"""Requested resource (gallery/image) could not be found"""
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msgfmt = "Requested {} could not be found"
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default = "resource (gallery/image)"
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code = 8
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class AuthenticationError(ExtractionError):
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"""Invalid or missing login credentials"""
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default = "Invalid or missing login credentials"
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code = 16
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class AuthorizationError(ExtractionError):
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"""Insufficient privileges to access a resource"""
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default = "Insufficient privileges to access a resource"
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code = 16
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class FormatError(GalleryDLException):
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"""Error while building output paths"""
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code = 32
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class FilenameFormatError(FormatError):
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"""Error while building output filenames"""
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msgfmt = "Applying filename format string failed ({})"
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class DirectoryFormatError(FormatError):
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"""Error while building output directory paths"""
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msgfmt = "Applying directory format string failed ({})"
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class FilterError(GalleryDLException):
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"""Error while evaluating a filter expression"""
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msgfmt = "Evaluating filter expression failed ({})"
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code = 32
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class NoExtractorError(GalleryDLException):
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"""No extractor can handle the given URL"""
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code = 64
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class StopExtraction(GalleryDLException):
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"""Stop data extraction"""
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def __init__(self, message=None, *args):
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GalleryDLException.__init__(self)
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self.message = message % args if args else message
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self.code = 1 if message else 0
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