added Wand 4.2 to lib

2016-04-09 00:36:30 +02:00
parent 8be85c8e5d
commit 8973e81aa1
22 changed files with 8449 additions and 0 deletions
@@ -0,0 +1,111 @@
+""":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