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/*
* Copyright 2007 Rob Kendrick <rjek@netsurf-browser.org>
* Copyright 2004-2007 James Bursa <bursa@users.sourceforge.net>
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
* Copyright 2004 John Tytgat <joty@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file utils/time.c
* \brief Implementation of time operations.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <curl/curl.h>
#include "utils/errors.h"
#include "utils/time.h"
/* exported interface documented in utils/time.h */
const char *rfc1123_date(time_t t)
{
static char ret[30];
struct tm *tm = gmtime(&t);
const char *days[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" },
*months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
snprintf(ret, sizeof ret, "%s, %02d %s %d %02d:%02d:%02d GMT",
days[tm->tm_wday], tm->tm_mday, months[tm->tm_mon],
tm->tm_year + 1900, tm->tm_hour, tm->tm_min,
tm->tm_sec);
return ret;
}
/* exported function documented in utils/time.h */
int nsc_sntimet(char *str, size_t size, time_t *timep)
{
#ifndef HAVE_STRFTIME
long long val;
val = (long long)*timep;
return snprintf(str, size, "%lld", val);
#else
struct tm *ltm;
ltm = localtime(timep);
if (ltm == NULL) {
return -1;
}
return strftime(str, size, "%s", ltm);
#endif
}
/* exported function documented in utils/time.h */
nserror nsc_snptimet(const char *str, size_t size, time_t *timep)
{
time_t time_out;
#ifndef HAVE_STRPTIME
char *rstr;
if (size < 1) {
return NSERROR_BAD_PARAMETER;
}
errno = 0;
time_out = (time_t)strtoll(str, &rstr, 10);
/* The conversion may have a range faliure or no digits were found */
if ((errno != 0) || (rstr == str)) {
return NSERROR_BAD_PARAMETER;
}
#else
struct tm ltm;
if (size < 1) {
return NSERROR_BAD_PARAMETER;
}
if (strptime(str, "%s", <m) == NULL) {
return NSERROR_BAD_PARAMETER;
}
time_out = mktime(<m);
#endif
*timep = time_out;
return NSERROR_OK;
}
/* exported function documented in utils/time.h */
nserror nsc_strntimet(const char *str, size_t size, time_t *timep)
{
time_t result;
result = curl_getdate(str, NULL);
if (result == -1) {
return NSERROR_INVALID;
}
*timep = result;
return NSERROR_OK;
}
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