def verify_dcraw(filename):
"""Verify a camera raw image file."""
command = (DCRAW, '-i', filename)
retcode = system.shell_returncode(command)
if retcode == 0:
return True
return False
def verify_imagemagick(filename):
"""Verify an image with Imagemagick."""
command = (IMAGEMAGICK_IDENTIFY, '-quiet', filename)
retcode = system.shell_returncode(command)
if retcode == 0:
return True
return False
def verify_xcf(filename):
"""Verify a gimp file."""
command = (XCFINFO, '-u', filename)
retcode = system.shell_returncode(command)
if retcode == 0:
return True
return False
def open_libtiff(filename):
"""Opens a tiff file with ``tiffcp``, which needs to be installed
on your system.
:param filename: name of tiff image file
:type filename: string
:returns: PIL image
:rtype: Image.Image
"""
# get info
info = get_info_libtiff(filename)
# extract
temp = system.TempFile()
command = (TIFFCP, '-c', 'none', '-r', '-1', filename, temp.path)
try:
returncode = system.shell_returncode(command)
if returncode == 0:
image = Image.open(temp.path)
image.load() # otherwise temp file can't be deleted
image.info.update(info)
image.info['Convertor'] = 'libtiff'
return image
finally:
temp.close(force_remove=False)
raise IOError('Could not extract tiff image with tiffcp.')
