def validate_input_file(input_file):
''' Validate the submitted input file.
This validation has four layers:
- extension of the file provided
- MIMETYPE of the file provided
- size of the image (1600x1200 minimal)
- ratio of the image (16:9)
:arg input_file: a File object of the candidate submitted/uploaded and
for which we want to check that it compliants with our expectations.
'''
extension = os.path.splitext(secure_filename(
input_file.filename))[1][1:].lower()
if extension not in APP.config.get('ALLOWED_EXTENSIONS', []):
raise nuancierlib.NuancierException(
'The submitted candidate has the file extension "%s" which is '
'not an allowed format' % extension)
mimetype = input_file.mimetype.lower()
if mimetype not in APP.config.get('ALLOWED_MIMETYPES',
[]): # pragma: no cover
raise nuancierlib.NuancierException(
'The submitted candidate has the MIME type "%s" which is '
'not an allowed MIME type' % mimetype)
try:
image = Image.open(input_file.stream)
except:
raise nuancierlib.NuancierException(
'The submitted candidate could not be opened as an Image')
width, height = image.size
min_width = APP.config.get('PICTURE_MIN_WIDTH', 1600)
min_height = APP.config.get('PICTURE_MIN_HEIGHT', 1200)
if width < min_width:
raise nuancierlib.NuancierException(
'The submitted candidate has a width of %s pixels which is lower'
' than the minimum %s pixels required' % (width, min_width))
if height < min_height:
raise nuancierlib.NuancierException(
'The submitted candidate has a height of %s pixels which is lower'
' than the minimum %s pixels required' % (height, min_height))
def validate_input_file(input_file):
''' Validate the submitted input file.
This validation has four layers:
- extension of the file provided
- MIMETYPE of the file provided
- portrait or landscape orientation
- size of the image (1600x1200 minimal)
- ratio of the image (16:9) - not checked by this function,
it is only recommended
:arg input_file: a File object of the candidate submitted/uploaded and
for which we want to check that it compliants with our expectations.
'''
extension = os.path.splitext(secure_filename(
input_file.filename))[1][1:].lower()
if extension not in APP.config.get('ALLOWED_EXTENSIONS', []):
raise nuancierlib.NuancierException(
'The submitted candidate has the file extension "%s" which is '
'not an allowed format' % extension)
mimetype = input_file.mimetype.lower()
if mimetype not in APP.config.get('ALLOWED_MIMETYPES',
[]): # pragma: no cover
raise nuancierlib.NuancierException(
'The submitted candidate has the MIME type "%s" which is '
'not an allowed MIME type' % mimetype)
try:
image = Image.open(input_file.stream)
except:
raise nuancierlib.NuancierException(
'The submitted candidate could not be opened as an Image')
width, height = image.size
min_width = APP.config.get('PICTURE_MIN_WIDTH', 1600)
min_height = APP.config.get('PICTURE_MIN_HEIGHT', 1200)
if width < height:
if APP.config.get('ALLOW_PORTRAIT', False):
# portrait allowed, turn condition by 90 deg.; width is heigh and
# vice versa
swap = min_width
min_width = min_height
min_height = swap
else:
raise nuancierlib.NuancierException(
'This instance does not support portrait oriented pictures.')
if width < min_width:
raise nuancierlib.NuancierException(
'The submitted candidate has a width of %s pixels which is lower'
' than the minimum %s pixels required' % (width, min_width))
if height < min_height:
raise nuancierlib.NuancierException(
'The submitted candidate has a height of %s pixels which is lower'
' than the minimum %s pixels required' % (height, min_height))