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Improve standards conformance of asctime_r(3).

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This commit is contained in:
Jonas 'Sortie' Termansen 2013-10-21 18:00:09 +02:00
parent 011ea58176
commit e31b98c5a1
1 changed files with 13 additions and 37 deletions
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40
libc/time/asctime_r.cpp
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@ -31,42 +31,18 @@
// do remove this function when all the calls to it has been purged. // do remove this function when all the calls to it has been purged.
extern "C" char* asctime_r(const struct tm* tm, char* buf) extern "C" char* asctime_r(const struct tm* tm, char* buf)
{ {
static char wday_names[7][4] = static char weekday_names[7][4] =
{ { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
"Sun", static char month_names[12][4] =
"Mon", { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
"Tue", "Nov", "Dec" };
"Wed", sprintf(buf, "%.3s %.3s%3d %.2d:%.2d%.2d %d\n",
"Thu", weekday_names[tm->tm_wday],
"Fri", month_names[tm->tm_mon],
"Sat"
};
static char mon_names[12][4] =
{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec",
};
// TODO: This is not exactly the same as in POSIX because printf currently
// doesn't support precision ('.'), only field width.
int bytes = sprintf(buf, "%s %s%3d %02d:%02d%02d %d\n",
wday_names[tm->tm_wday],
mon_names[tm->tm_mon],
tm->tm_mday, tm->tm_mday,
tm->tm_hour, tm->tm_hour,
tm->tm_min, tm->tm_min,
tm->tm_sec, tm->tm_sec,
tm->tm_year + 1900); tm->tm_year + 1900);
assert(bytes+1 <= 26);
return buf; return buf;
} }