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

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Merged
serhiy-storchaka 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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use autoconf instead to test if c99-specific specifiers are supported
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@blhsing
blhsing committed Jul 30, 2024
commit 8fe9521eb49d6cdd1d03c8aff7010062cdf35de8
3 changes: 1 addition & 2 deletions Modules/_datetimemodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1953,8 +1953,7 @@ wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
}
#ifdef Py_NORMALIZE_CENTURY
else if (ch == 'Y' || ch == 'G'
#if __STDC_VERSION__ >= 199901L
#define Py_STRFTIME_C99_SUPPORT
#ifdef Py_STRFTIME_C99_SUPPORT
|| ch == 'F' || ch == 'C'
#endif
) {
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52 changes: 52 additions & 0 deletions configure
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28 changes: 28 additions & 0 deletions configure.ac
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Expand Up @@ -6700,6 +6700,34 @@ then
[Define if year with century should be normalized for strftime.])
fi

AC_CACHE_CHECK([whether C99-specific strftime specifiers are supported], [ac_cv_strftime_c99_support], [
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <time.h>
#include <string.h>

int main(void)
{
char full_date[11];
struct tm date = {
.tm_year = -1801,
.tm_mon = 0,
.tm_mday = 1
};
if (strftime(full_date, sizeof(full_date), "%F", &date) && !strcmp(full_date, "%F")) {
return 1;
}
return 0;
}
]])],
[ac_cv_strftime_c99_support=yes],
[ac_cv_strftime_c99_support=no],
[ac_cv_strftime_c99_support=yes])])
if test "$ac_cv_strftime_c99_support" = yes
then
AC_DEFINE([Py_STRFTIME_C99_SUPPORT], [1],
[Define if C99-specific strftime specifiers are supported.])
fi

dnl check for ncursesw/ncurses and panelw/panel
dnl NOTE: old curses is not detected.
dnl have_curses=[no, yes]
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