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# -*- coding: utf-8 -*-
# Copyright 2015-2021 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
"""Exception classes used by gallery-dl
Class Hierarchy:
Exception
+-- GalleryDLException
+-- ExtractionError
| +-- AuthenticationError
| +-- AuthorizationError
| +-- NotFoundError
| +-- HttpError
+-- FormatError
| +-- FilenameFormatError
| +-- DirectoryFormatError
+-- FilterError
+-- NoExtractorError
+-- StopExtraction
+-- TerminateExtraction
"""
class GalleryDLException(Exception):
"""Base class for GalleryDL exceptions"""
default = None
msgfmt = None
code = 1
def __init__(self, message=None):
if not message:
message = self.default
elif isinstance(message, Exception):
message = "{}: {}".format(message.__class__.__name__, message)
if self.msgfmt:
message = self.msgfmt.format(message)
Exception.__init__(self, message)
class ExtractionError(GalleryDLException):
"""Base class for exceptions during information extraction"""
class HttpError(ExtractionError):
"""HTTP request during data extraction failed"""
default = "HTTP request failed"
code = 4
def __init__(self, message, response=None):
ExtractionError.__init__(self, message)
self.response = response
self.status = response.status_code if response else 0
class NotFoundError(ExtractionError):
"""Requested resource (gallery/image) could not be found"""
msgfmt = "Requested {} could not be found"
default = "resource (gallery/image)"
code = 8
class AuthenticationError(ExtractionError):
"""Invalid or missing login credentials"""
default = "Invalid or missing login credentials"
code = 16
class AuthorizationError(ExtractionError):
"""Insufficient privileges to access a resource"""
default = "Insufficient privileges to access the specified resource"
code = 16
class FormatError(GalleryDLException):
"""Error while building output paths"""
code = 32
class FilenameFormatError(FormatError):
"""Error while building output filenames"""
msgfmt = "Applying filename format string failed ({})"
class DirectoryFormatError(FormatError):
"""Error while building output directory paths"""
msgfmt = "Applying directory format string failed ({})"
class FilterError(GalleryDLException):
"""Error while evaluating a filter expression"""
msgfmt = "Evaluating filter expression failed ({})"
code = 32
class NoExtractorError(GalleryDLException):
"""No extractor can handle the given URL"""
code = 64
class StopExtraction(GalleryDLException):
"""Stop data extraction"""
def __init__(self, message=None, *args):
GalleryDLException.__init__(self)
self.message = message % args if args else message
self.code = 1 if message else 0
class TerminateExtraction(GalleryDLException):
"""Terminate data extraction"""
code = 0
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