def verify_image(info_file, valid, invalid,
method_register=VERIFY_WITHOUT_PIL):
extension = system.file_extension(info_file['path'])
if extension in method_register.extensions:
verify_image_without_pil(info_file, method_register, valid, invalid)
else:
verify_image_with_pil(info_file, valid, invalid)
def open_image_without_pil(filename, method_register):
"""Try to open images which PIL can't handle."""
extension = system.file_extension(filename)
if extension in method_register.extensions:
methods = method_register.get_methods(extension)
for open_method in methods:
image = open_method(filename)
if image:
return image
def verify_image_without_pil(info_file, method_register, valid, invalid):
"""Try to verify images which PIL can't handle."""
extension = system.file_extension(info_file['path'])
methods = method_register.get_methods(extension)
for verify_method in methods:
if verify_method(info_file['path']):
valid.append(info_file)
return True
invalid.append(info_file['path'])
return False
def get_format_filename(filename):
"""Guess the image format by the filename.
:param filename: filename
:type filename: string
:returns: image format
:rtype: string
.. warning::
This is only meant to check before saving files. For existing files
open the image with PIL and check its format attribute.
>>> get_format_filename('test.tif')
'TIFF'
"""
return get_format(system.file_extension(filename))
def get_format_filename(filename):
"""Guess the image format by the filename.
:param filename: filename
:type filename: string
:returns: image format
:rtype: string
.. warning::
This is only meant to check before saving files. For existing files
open the image with PIL and check its format attribute.
>>> get_format_filename('test.tif')
'TIFF'
"""
return get_format(system.file_extension(filename))