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apr_date.h
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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef APR_DATE_H
#define APR_DATE_H
/**
* @file apr_date.h
* @brief APR-UTIL date routines
*/
/**
* @defgroup APR_Util_Date Date routines
* @ingroup APR_Util
* @{
*/
/*
* apr_date.h: prototypes for date parsing utility routines
*/
#include "apu.h"
#include "apr_time.h"
#ifdef __cplusplus
extern "C" {
#endif
/** A bad date. */
#define APR_DATE_BAD ((apr_time_t)0)
/**
* Compare a string to a mask
* @param data The string to compare
* @param mask Mask characters (arbitrary maximum is 256 characters):
* <PRE>
* '\@' - uppercase letter
* '\$' - lowercase letter
* '\&' - hex digit
* '#' - digit
* '~' - digit or space
* '*' - swallow remaining characters
* </PRE>
* @remark The mask tests for an exact match for any other character
* @return 1 if the string matches, 0 otherwise
*/
APU_DECLARE(int) apr_date_checkmask(const char *data, const char *mask);
/**
* Parses an HTTP date in one of three standard forms:
* <PRE>
* Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123
* Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
* Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format
* </PRE>
* @param date The date in one of the three formats above
* @return the apr_time_t number of microseconds since 1 Jan 1970 GMT, or
* 0 if this would be out of range or if the date is invalid.
*/
APU_DECLARE(apr_time_t) apr_date_parse_http(const char *date);
/**
* Parses a string resembling an RFC 822 date. This is meant to be
* leinent in its parsing of dates. Hence, this will parse a wider
* range of dates than apr_date_parse_http.
*
* The prominent mailer (or poster, if mailer is unknown) that has
* been seen in the wild is included for the unknown formats.
* <PRE>
* Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123
* Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
* Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format
* Sun, 6 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123
* Sun, 06 Nov 94 08:49:37 GMT ; RFC 822
* Sun, 6 Nov 94 08:49:37 GMT ; RFC 822
* Sun, 06 Nov 94 08:49 GMT ; Unknown [drtr\@ast.cam.ac.uk]
* Sun, 6 Nov 94 08:49 GMT ; Unknown [drtr\@ast.cam.ac.uk]
* Sun, 06 Nov 94 8:49:37 GMT ; Unknown [Elm 70.85]
* Sun, 6 Nov 94 8:49:37 GMT ; Unknown [Elm 70.85]
* </PRE>
*
* @param date The date in one of the formats above
* @return the apr_time_t number of microseconds since 1 Jan 1970 GMT, or
* 0 if this would be out of range or if the date is invalid.
*/
APU_DECLARE(apr_time_t) apr_date_parse_rfc(const char *date);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* !APR_DATE_H */