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73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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time/asctime_r.cpp
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Convert date and time to a string.
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*******************************************************************************/
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#include <assert.h>
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#include <time.h>
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#include <stdio.h>
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// TODO: Oh god. This function is horrible! It's obsolescent in POSIX - but it's
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// still widely used and I need it at the moment to port software. Please
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// do remove this function when all the calls to it has been purged.
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extern "C" char* asctime_r(const struct tm* tm, char* buf)
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{
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static char wday_names[7][4] =
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{
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"Sun",
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"Mon",
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"Tue",
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"Wed",
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"Thu",
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"Fri",
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"Sat"
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};
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static char mon_names[12][4] =
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{
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"Jan",
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"Feb",
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"Mar",
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"Apr",
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"May",
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"Jun",
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"Jul",
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"Aug",
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"Sep",
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"Oct",
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"Nov",
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"Dec",
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};
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// TODO: This is not exactly the same as in POSIX because printf currently
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// doesn't support precision ('.'), only field width.
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int bytes = sprintf(buf, "%s %s%3d %02d:%02d%02d %d\n",
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wday_names[tm->tm_wday],
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mon_names[tm->tm_mon],
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tm->tm_mday,
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tm->tm_hour,
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tm->tm_min,
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tm->tm_sec,
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tm->tm_year + 1900);
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assert(bytes+1 <= 26);
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return buf;
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}
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