mirror of
https://github.com/janeczku/calibre-web
synced 2024-12-01 05:49:58 +00:00
112 lines
3.8 KiB
Python
112 lines
3.8 KiB
Python
""":mod:`wand.exceptions` --- Errors and warnings
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
This module maps MagickWand API's errors and warnings to Python's native
|
|
exceptions and warnings. You can catch all MagickWand errors using Python's
|
|
natural way to catch errors.
|
|
|
|
.. seealso::
|
|
|
|
`ImageMagick Exceptions <http://www.imagemagick.org/script/exception.php>`_
|
|
|
|
.. versionadded:: 0.1.1
|
|
|
|
"""
|
|
|
|
|
|
class WandException(Exception):
|
|
"""All Wand-related exceptions are derived from this class."""
|
|
|
|
|
|
class WandWarning(WandException, Warning):
|
|
"""Base class for Wand-related warnings."""
|
|
|
|
|
|
class WandError(WandException):
|
|
"""Base class for Wand-related errors."""
|
|
|
|
|
|
class WandFatalError(WandException):
|
|
"""Base class for Wand-related fatal errors."""
|
|
|
|
|
|
class WandLibraryVersionError(WandException):
|
|
"""Base class for Wand-related ImageMagick version errors.
|
|
|
|
.. versionadded:: 0.3.2
|
|
|
|
"""
|
|
|
|
|
|
#: (:class:`list`) A list of error/warning domains, these descriptions and
|
|
#: codes. The form of elements is like: (domain name, description, codes).
|
|
DOMAIN_MAP = [
|
|
('ResourceLimit',
|
|
'A program resource is exhausted e.g. not enough memory.',
|
|
(MemoryError,),
|
|
[300, 400, 700]),
|
|
('Type', 'A font is unavailable; a substitution may have occurred.', (),
|
|
[305, 405, 705]),
|
|
('Option', 'A command-line option was malformed.', (), [310, 410, 710]),
|
|
('Delegate', 'An ImageMagick delegate failed to complete.', (),
|
|
[315, 415, 715]),
|
|
('MissingDelegate',
|
|
'The image type can not be read or written because the appropriate; '
|
|
'delegate is missing.',
|
|
(ImportError,),
|
|
[320, 420, 720]),
|
|
('CorruptImage', 'The image file may be corrupt.',
|
|
(ValueError,), [325, 425, 725]),
|
|
('FileOpen', 'The image file could not be opened for reading or writing.',
|
|
(IOError,), [330, 430, 730]),
|
|
('Blob', 'A binary large object could not be allocated, read, or written.',
|
|
(IOError,), [335, 435, 735]),
|
|
('Stream', 'There was a problem reading or writing from a stream.',
|
|
(IOError,), [340, 440, 740]),
|
|
('Cache', 'Pixels could not be read or written to the pixel cache.',
|
|
(), [345, 445, 745]),
|
|
('Coder', 'There was a problem with an image coder.', (), [350, 450, 750]),
|
|
('Module', 'There was a problem with an image module.', (),
|
|
[355, 455, 755]),
|
|
('Draw', 'A drawing operation failed.', (), [360, 460, 760]),
|
|
('Image', 'The operation could not complete due to an incompatible image.',
|
|
(), [365, 465, 765]),
|
|
('Wand', 'There was a problem specific to the MagickWand API.', (),
|
|
[370, 470, 770]),
|
|
('Random', 'There is a problem generating a true or pseudo-random number.',
|
|
(), [375, 475, 775]),
|
|
('XServer', 'An X resource is unavailable.', (), [380, 480, 780]),
|
|
('Monitor', 'There was a problem activating the progress monitor.', (),
|
|
[385, 485, 785]),
|
|
('Registry', 'There was a problem getting or setting the registry.', (),
|
|
[390, 490, 790]),
|
|
('Configure', 'There was a problem getting a configuration file.', (),
|
|
[395, 495, 795]),
|
|
('Policy',
|
|
'A policy denies access to a delegate, coder, filter, path, or resource.',
|
|
(), [399, 499, 799])
|
|
]
|
|
|
|
|
|
#: (:class:`list`) The list of (base_class, suffix) pairs (for each code).
|
|
#: It would be zipped with :const:`DOMAIN_MAP` pairs' last element.
|
|
CODE_MAP = [
|
|
(WandWarning, 'Warning'),
|
|
(WandError, 'Error'),
|
|
(WandFatalError, 'FatalError')
|
|
]
|
|
|
|
|
|
#: (:class:`dict`) The dictionary of (code, exc_type).
|
|
TYPE_MAP = {}
|
|
|
|
|
|
for domain, description, bases, codes in DOMAIN_MAP:
|
|
for code, (base, suffix) in zip(codes, CODE_MAP):
|
|
name = domain + suffix
|
|
locals()[name] = TYPE_MAP[code] = type(name, (base,) + bases, {
|
|
'__doc__': description,
|
|
'wand_error_code': code
|
|
})
|
|
del name, base, suffix
|