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Blackened everything

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This commit is contained in:
Joel Collins 2019-09-15 14:17:52 +01:00
parent e213647217
commit 5966ce29be
57 changed files with 1938 additions and 1414 deletions
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50
openflexure_microscope/camera/piexif/helper.py
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@ -2,26 +2,26 @@ class UserComment:
#
# Names of encodings that we publicly support.
#
ASCII = 'ascii'
JIS = 'jis'
UNICODE = 'unicode'
ASCII = "ascii"
JIS = "jis"
UNICODE = "unicode"
ENCODINGS = (ASCII, JIS, UNICODE)
#
# The actual encodings accepted by the standard library differ slightly from
# the above.
#
_JIS = 'shift_jis'
_UNICODE = 'utf_16_be'
_JIS = "shift_jis"
_UNICODE = "utf_16_be"
_PREFIX_SIZE = 8
#
# From Table 9: Character Codes and their Designation
#
_ASCII_PREFIX = b'\x41\x53\x43\x49\x49\x00\x00\x00'
_JIS_PREFIX = b'\x4a\x49\x53\x00\x00\x00\x00\x00'
_UNICODE_PREFIX = b'\x55\x4e\x49\x43\x4f\x44\x45\x00'
_UNDEFINED_PREFIX = b'\x00\x00\x00\x00\x00\x00\x00\x00'
_ASCII_PREFIX = b"\x41\x53\x43\x49\x49\x00\x00\x00"
_JIS_PREFIX = b"\x4a\x49\x53\x00\x00\x00\x00\x00"
_UNICODE_PREFIX = b"\x55\x4e\x49\x43\x4f\x44\x45\x00"
_UNDEFINED_PREFIX = b"\x00\x00\x00\x00\x00\x00\x00\x00"
@classmethod
def load(cls, data):
@ -35,18 +35,20 @@ class UserComment:
or the encoding is unsupported.
"""
if len(data) < cls._PREFIX_SIZE:
raise ValueError('not enough data to decode UserComment')
prefix = data[:cls._PREFIX_SIZE]
body = data[cls._PREFIX_SIZE:]
raise ValueError("not enough data to decode UserComment")
prefix = data[: cls._PREFIX_SIZE]
body = data[cls._PREFIX_SIZE :]
if prefix == cls._UNDEFINED_PREFIX:
raise ValueError('prefix is UNDEFINED, unable to decode UserComment')
raise ValueError("prefix is UNDEFINED, unable to decode UserComment")
try:
encoding = {
cls._ASCII_PREFIX: cls.ASCII, cls._JIS_PREFIX: cls._JIS, cls._UNICODE_PREFIX: cls._UNICODE,
cls._ASCII_PREFIX: cls.ASCII,
cls._JIS_PREFIX: cls._JIS,
cls._UNICODE_PREFIX: cls._UNICODE,
}[prefix]
except KeyError:
raise ValueError('unable to determine appropriate encoding')
return body.decode(encoding, errors='replace')
raise ValueError("unable to determine appropriate encoding")
return body.decode(encoding, errors="replace")
@classmethod
def dump(cls, data, encoding="ascii"):
@ -60,7 +62,15 @@ class UserComment:
:raises: ValueError if the encoding is unsupported.
"""
if encoding not in cls.ENCODINGS:
raise ValueError('encoding %r must be one of %r' % (encoding, cls.ENCODINGS))
prefix = {cls.ASCII: cls._ASCII_PREFIX, cls.JIS: cls._JIS_PREFIX, cls.UNICODE: cls._UNICODE_PREFIX}[encoding]
internal_encoding = {cls.UNICODE: cls._UNICODE, cls.JIS: cls._JIS}.get(encoding, encoding)
return prefix + data.encode(internal_encoding, errors='replace')
raise ValueError(
"encoding %r must be one of %r" % (encoding, cls.ENCODINGS)
)
prefix = {
cls.ASCII: cls._ASCII_PREFIX,
cls.JIS: cls._JIS_PREFIX,
cls.UNICODE: cls._UNICODE_PREFIX,
}[encoding]
internal_encoding = {cls.UNICODE: cls._UNICODE, cls.JIS: cls._JIS}.get(
encoding, encoding
)
return prefix + data.encode(internal_encoding, errors="replace")