8000 gh-122272: guarantee specifiers %F and %C for datetime.strftime to be 0-padded by blhsing · Pull Request #122436 · python/cpython · GitHub
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gh-122272: guarantee specifiers %F and %C for datetime.strftime to be 0-padded #122436

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Merged
merged 11 commits into from
Aug 23, 2024
Merged

gh-122272: guarantee specifiers %F and %C for datetime.strftime to be 0-padded #122436

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61c2c61
gh-122272: guarantee specifiers %F and %C for datetime.strftime to be…
blhsing Jul 30, 2024
8dc1100
removed trailing spaces
blhsing Jul 30, 2024
f85cd69
📜🤖 Added by blurb_it.
blurb-it[bot] Jul 30, 2024
2fd7093
handle %C and %F only when the C library supports them (at least C99)
blhsing Jul 30, 2024
8fe9521
use autoconf instead to test if c99-specific specifiers are supported
blhsing Jul 30, 2024
4e1ea89
generate header
blhsing Jul 30, 2024
bfd2f18
corrected logics of checks for c99 support
blhsing Jul 30, 2024
fd8dd30
allocate 6 more bytes for the formatted date buffer only when %F is s…
blhsing Jul 31, 2024
3e36832
pass through month and day to time.strftime for %F; made _supports_c9…
blhsing Aug 16, 2024
3530288
validate timetuple as a tuple; cache result of _can_support_c99 upon …
blhsing Aug 22, 2024
c9c51d7
use PySequence_GetItem instead of PyTuple_GetItem for better error ha…
blhsing Aug 23, 2024
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allocate 6 more bytes for the formatted date buffer only when %F is s… 
…upported
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@blhsing
blhsing committed Jul 31, 2024
commit fd8dd3099de4a4817bfabd8a88205e7e17aef172
11 changes: 7 additions & 4 deletions Modules/_datetimemodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1852,10 +1852,13 @@ wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
Py_ssize_t ntoappend; /* # of bytes to append to output buffer */

#ifdef Py_NORMALIZE_CENTURY
/* Buffer of maximum size of formatted year permitted by long.
* Adding 6 just to accomodate %F with dashes, 2-digit month and day.
*/
char buf[SIZEOF_LONG*5/2+2+6];
/* Buffer of maximum size of formatted year permitted by long. */
char buf[SIZEOF_LONG * 5 / 2 + 2
#ifdef Py_STRFTIME_C99_SUPPORT
/* Need 6 more to accomodate dashes, 2-digit month and day for %F. */
+ 6
#endif
];
#endif

assert(object && format && timetuple);
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