dbapi2.py 3.2 KB

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  1. # pysqlite2/dbapi2.py: the DB-API 2.0 interface
  2. #
  3. # Copyright (C) 2004-2005 Gerhard Häring <gh@ghaering.de>
  4. #
  5. # This file is part of pysqlite.
  6. #
  7. # This software is provided 'as-is', without any express or implied
  8. # warranty. In no event will the authors be held liable for any damages
  9. # arising from the use of this software.
  10. #
  11. # Permission is granted to anyone to use this software for any purpose,
  12. # including commercial applications, and to alter it and redistribute it
  13. # freely, subject to the following restrictions:
  14. #
  15. # 1. The origin of this software must not be misrepresented; you must not
  16. # claim that you wrote the original software. If you use this software
  17. # in a product, an acknowledgment in the product documentation would be
  18. # appreciated but is not required.
  19. # 2. Altered source versions must be plainly marked as such, and must not be
  20. # misrepresented as being the original software.
  21. # 3. This notice may not be removed or altered from any source distribution.
  22. import datetime
  23. import time
  24. import collections.abc
  25. from _sqlite3 import *
  26. paramstyle = "qmark"
  27. apilevel = "2.0"
  28. Date = datetime.date
  29. Time = datetime.time
  30. Timestamp = datetime.datetime
  31. def DateFromTicks(ticks):
  32. return Date(*time.localtime(ticks)[:3])
  33. def TimeFromTicks(ticks):
  34. return Time(*time.localtime(ticks)[3:6])
  35. def TimestampFromTicks(ticks):
  36. return Timestamp(*time.localtime(ticks)[:6])
  37. version_info = tuple([int(x) for x in version.split(".")])
  38. sqlite_version_info = tuple([int(x) for x in sqlite_version.split(".")])
  39. Binary = memoryview
  40. collections.abc.Sequence.register(Row)
  41. def register_adapters_and_converters():
  42. def adapt_date(val):
  43. return val.isoformat()
  44. def adapt_datetime(val):
  45. return val.isoformat(" ")
  46. def convert_date(val):
  47. return datetime.date(*map(int, val.split(b"-")))
  48. def convert_timestamp(val):
  49. datepart, timepart = val.split(b" ")
  50. year, month, day = map(int, datepart.split(b"-"))
  51. timepart_full = timepart.split(b".")
  52. hours, minutes, seconds = map(int, timepart_full[0].split(b":"))
  53. if len(timepart_full) == 2:
  54. microseconds = int('{:0<6.6}'.format(timepart_full[1].decode()))
  55. else:
  56. microseconds = 0
  57. val = datetime.datetime(year, month, day, hours, minutes, seconds, microseconds)
  58. return val
  59. register_adapter(datetime.date, adapt_date)
  60. register_adapter(datetime.datetime, adapt_datetime)
  61. register_converter("date", convert_date)
  62. register_converter("timestamp", convert_timestamp)
  63. register_adapters_and_converters()
  64. # bpo-24464: enable_shared_cache was deprecated in Python 3.10. It's
  65. # scheduled for removal in Python 3.12.
  66. def enable_shared_cache(enable):
  67. from _sqlite3 import enable_shared_cache as _old_enable_shared_cache
  68. import warnings
  69. msg = (
  70. "enable_shared_cache is deprecated and will be removed in Python 3.12. "
  71. "Shared cache is strongly discouraged by the SQLite 3 documentation. "
  72. "If shared cache must be used, open the database in URI mode using"
  73. "the cache=shared query parameter."
  74. )
  75. warnings.warn(msg, DeprecationWarning, stacklevel=2)
  76. return _old_enable_shared_cache(enable)
  77. # Clean up namespace
  78. del(register_adapters_and_converters)