def save(self, output, format=None, **kwargs):
"""Save the image to a file.
The `file' parameter can be a file name or a file-like object. If
the file format cannot be deduced from a file name, you have to
supply the `format' keyword argument.
"""
if hasattr(output, 'write'):
if format is None:
raise ValueError, 'No format specified.'
output = gd.createStream(output)
stream = True
elif isinstance(output, str):
if format is None:
basename, ext = os.path.splitext(output)
format = self._extmap.get(ext, ext)
fout = file(output, 'wb')
output = gd.createStream(fout)
stream = False
else:
raise TypeError, 'Expecting a file name or a file like object.'
if format == 'jpeg' and kwargs.has_key('quality'):
args += (kwargs['quality'],)
else:
args = ()
if not stream:
fout.close()
self.m_image.save(output, format, *args)
def load(cls, input, format=None):
"""Loads and return an image from a file.
The `file' parameter can be a file name or a file like object. If
the file format cannot be deduced from a file name, you have to
supply the `format' keyword argument. Currently, the formats "png",
"gif", "jpeg", "gd", "gd2", "wbmp", "xbm" and "xpm" are supported.
"""
if hasattr(input, 'read'):
input = gd.createStream(input)
stream = True
elif type(input) is str:
fin = file(input, 'rb')
input = gd.createStream(fin)
stream = False
else:
raise TypeError, 'Expecting a file name or a file like object.'
if format is None:
if stream:
raise ValueError, 'No format or file name specified.'
else:
basename, ext = os.path.splitext(input)
ext = ext.lower()
format = cls.extensions.get(ext, ext)
elif format in cls.content_types:
format = cls.content_types[format]
if format not in cls.formats:
raise DrawError, 'Unsupported format: %s' % format
try:
image = gd.loadImage(input, format)
except ValueError, err:
raise DrawError, str(err)