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