84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/*
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* Copyright 2014 Vincent Sanders <vince@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file utils/time.h
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* \brief Interface to time operations.
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*/
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#ifndef _NETSURF_UTILS_TIME_H_
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#define _NETSURF_UTILS_TIME_H_
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#include <time.h>
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/**
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* Write the time in seconds since epoch to a buffer.
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*
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* This is provided as strftime is not generally portable.
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*
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* @param str The destination buffer.
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* @param size The length of the destination buffer.
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* @param timep The pointer to the time to write.
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* @return The length of the string written.
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*/
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int nsc_sntimet(char *str, size_t size, time_t *timep);
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/**
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* Parse time in seconds since epoc.
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*
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* This is provided as strptime is not generally portable.
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*
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* @param str The source buffer.
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* @param size The length of the source buffer.
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* @param timep Pointer to result.
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* @return NSERROR_OK on success or error code on faliure.
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*/
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nserror nsc_snptimet(const char *str, size_t size, time_t *timep);
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/**
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* Converts a date string to a number of seconds since epoch
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*
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* returns the number of seconds since the Epoch, January 1st 1970
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* 00:00:00 in the UTC time zone, for the date and time that the
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* \a str parameter specifies.
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*
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* datetime strings passed must be in one of the formats specified in:
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* - RFC 822 (updated in RFC 1123) using time zone name or time zone delta
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* - RFC 850 (obsoleted by RFC 1036)
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* - ANSI C's asctime() format.
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*
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* @param[in] str The datetime string to parse
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* @param[in] size The length of the source string
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* @param[out] timep Pointer to result on success unmodified on error.
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* @return NSERROR_OK on success and timep updated else
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* NSERROR_INVALID if the string parsing failed otherwise a suitable
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* error code
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*/
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nserror nsc_strntimet(const char *str, size_t size, time_t *timep);
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/**
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* Create an RFC 1123 compliant date string from a Unix timestamp
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*
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* \param t The timestamp to consider
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* \return Pointer to buffer containing string - invalidated by next call.
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*/
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const char *rfc1123_date(time_t t);
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#endif
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