include/apr-0/apr_date.h

   1 /* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
   2  * applicable.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef APR_DATE_H
  18 #define APR_DATE_H
  19
  20 /**
  21  * @file apr_date.h
  22  * @brief APR-UTIL date routines
  23  */
  24
  25 /**
  26  * @defgroup APR_Util_Date Date routines
  27  * @ingroup APR_Util
  28  * @{
  29  */
  30
  31 /*
  32  * apr_date.h: prototypes for date parsing utility routines
  33  */
  34
  35 #include "apu.h"
  36 #include "apr_time.h"
  37
  38 #ifdef __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 /** A bad date. */
  43 #define APR_DATE_BAD ((apr_time_t)0)
  44
  45 /**
  46  * Compare a string to a mask
  47  * @param data The string to compare
  48  * @param mask Mask characters (arbitrary maximum is 256 characters):
  49  * <PRE>
  50  *   '\@' - uppercase letter
  51  *   '\$' - lowercase letter
  52  *   '\&' - hex digit
  53  *   '#' - digit
  54  *   '~' - digit or space
  55  *   '*' - swallow remaining characters
  56  * </PRE>
  57  * @remark The mask tests for an exact match for any other character
  58  * @return 1 if the string matches, 0 otherwise
  59  */
  60 APU_DECLARE(int) apr_date_checkmask(const char *data, const char *mask);
  61
  62 /**
  63  * Parses an HTTP date in one of three standard forms:
  64  * <PRE>
  65  *     Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
  66  *     Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
  67  *     Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
  68  * </PRE>
  69  * @param date The date in one of the three formats above
  70  * @return the apr_time_t number of microseconds since 1 Jan 1970 GMT, or
  71  *         0 if this would be out of range or if the date is invalid.
  72  */
  73 APU_DECLARE(apr_time_t) apr_date_parse_http(const char *date);
  74
  75 /**
  76  * Parses a string resembling an RFC 822 date.  This is meant to be
  77  * leinent in its parsing of dates.  Hence, this will parse a wider
  78  * range of dates than apr_date_parse_http.
  79  *
  80  * The prominent mailer (or poster, if mailer is unknown) that has
  81  * been seen in the wild is included for the unknown formats.
  82  * <PRE>
  83  *     Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
  84  *     Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
  85  *     Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
  86  *     Sun, 6 Nov 1994 08:49:37 GMT   ; RFC 822, updated by RFC 1123
  87  *     Sun, 06 Nov 94 08:49:37 GMT    ; RFC 822
  88  *     Sun, 6 Nov 94 08:49:37 GMT     ; RFC 822
  89  *     Sun, 06 Nov 94 08:49 GMT       ; Unknown [drtr\@ast.cam.ac.uk]
  90  *     Sun, 6 Nov 94 08:49 GMT        ; Unknown [drtr\@ast.cam.ac.uk]
  91  *     Sun, 06 Nov 94 8:49:37 GMT     ; Unknown [Elm 70.85]
  92  *     Sun, 6 Nov 94 8:49:37 GMT      ; Unknown [Elm 70.85]
  93  * </PRE>
  94  *
  95  * @param date The date in one of the formats above
  96  * @return the apr_time_t number of microseconds since 1 Jan 1970 GMT, or
  97  *         0 if this would be out of range or if the date is invalid.
  98  */
  99 APU_DECLARE(apr_time_t) apr_date_parse_rfc(const char *date);
 100
 101 /** @} */
 102 #ifdef __cplusplus
 103 }
 104 #endif
 105
 106 #endif  /* !APR_DATE_H */