43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
"""
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This module houses the OGR & SRS Exception objects, and the
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check_err() routine which checks the status code returned by
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OGR methods.
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"""
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#### OGR & SRS Exceptions ####
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class GDALException(Exception): pass
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class OGRException(Exception): pass
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class SRSException(Exception): pass
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class OGRIndexError(OGRException, KeyError):
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"""
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This exception is raised when an invalid index is encountered, and has
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the 'silent_variable_feature' attribute set to true. This ensures that
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django's templates proceed to use the next lookup type gracefully when
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an Exception is raised. Fixes ticket #4740.
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"""
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silent_variable_failure = True
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#### OGR error checking codes and routine ####
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# OGR Error Codes
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OGRERR_DICT = { 1 : (OGRException, 'Not enough data.'),
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2 : (OGRException, 'Not enough memory.'),
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3 : (OGRException, 'Unsupported geometry type.'),
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4 : (OGRException, 'Unsupported operation.'),
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5 : (OGRException, 'Corrupt data.'),
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6 : (OGRException, 'OGR failure.'),
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7 : (SRSException, 'Unsupported SRS.'),
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8 : (OGRException, 'Invalid handle.'),
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}
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OGRERR_NONE = 0
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def check_err(code):
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"Checks the given OGRERR, and raises an exception where appropriate."
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if code == OGRERR_NONE:
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return
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elif code in OGRERR_DICT:
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e, msg = OGRERR_DICT[code]
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raise e, msg
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else:
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raise OGRException('Unknown error code: "%s"' % code)
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