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Diffstat (limited to 'base/third_party/nspr/prtime.h')
| -rw-r--r-- | base/third_party/nspr/prtime.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/base/third_party/nspr/prtime.h b/base/third_party/nspr/prtime.h new file mode 100644 index 0000000..70d25bc --- /dev/null +++ b/base/third_party/nspr/prtime.h @@ -0,0 +1,185 @@ +/* +* Portions are Copyright (C) 2007 Google Inc +* +* ***** BEGIN LICENSE BLOCK ***** +* Version: MPL 1.1/GPL 2.0/LGPL 2.1 +* +* The contents of this file are subject to the Mozilla Public License Version +* 1.1 (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.mozilla.org/MPL/ +* +* Software distributed under the License is distributed on an "AS IS" basis, +* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License +* for the specific language governing rights and limitations under the +* License. +* +* The Original Code is the Netscape Portable Runtime (NSPR). +* +* The Initial Developer of the Original Code is +* Netscape Communications Corporation. +* Portions created by the Initial Developer are Copyright (C) 1998-2000 +* the Initial Developer. All Rights Reserved. +* +* Contributor(s): +* +* Alternatively, the contents of this file may be used under the terms of +* either the GNU General Public License Version 2 or later (the "GPL"), or +* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), +* in which case the provisions of the GPL or the LGPL are applicable instead +* of those above. If you wish to allow use of your version of this file only +* under the terms of either the GPL or the LGPL, and not to allow others to +* use your version of this file under the terms of the MPL, indicate your +* decision by deleting the provisions above and replace them with the notice +* and other provisions required by the GPL or the LGPL. If you do not delete +* the provisions above, a recipient may use your version of this file under +* the terms of any one of the MPL, the GPL or the LGPL. +* +* ***** END LICENSE BLOCK ***** +*/ + +/* + *--------------------------------------------------------------------------- + * + * prtime.h -- + * + * NSPR date and time functions + * CVS revision 3.11 + * This file contains definitions of NSPR's basic types required by + * prtime.cc. These types have been copied over from the following NSPR + * files prtime.h, prtypes.h(CVS revision 3.35), prlong.h(CVS revision 3.13) + * + *--------------------------------------------------------------------------- + */ + +#ifndef BASE_PRTIME_H__ +#define BASE_PRTIME_H__ + +#include "base/logging.h" +#include "base/third_party/nspr/prtypes.h" + +#define PR_ASSERT DCHECK + +#define LL_I2L(l, i) ((l) = (PRInt64)(i)) +#define LL_MUL(r, a, b) ((r) = (a) * (b)) + +/**********************************************************************/ +/************************* TYPES AND CONSTANTS ************************/ +/**********************************************************************/ + +#define PR_MSEC_PER_SEC 1000UL +#define PR_USEC_PER_SEC 1000000UL +#define PR_NSEC_PER_SEC 1000000000UL +#define PR_USEC_PER_MSEC 1000UL +#define PR_NSEC_PER_MSEC 1000000UL + +/* + * PRTime -- + * + * NSPR represents basic time as 64-bit signed integers relative + * to midnight (00:00:00), January 1, 1970 Greenwich Mean Time (GMT). + * (GMT is also known as Coordinated Universal Time, UTC.) + * The units of time are in microseconds. Negative times are allowed + * to represent times prior to the January 1970 epoch. Such values are + * intended to be exported to other systems or converted to human + * readable form. + * + * Notes on porting: PRTime corresponds to time_t in ANSI C. NSPR 1.0 + * simply uses PRInt64. + */ + +typedef PRInt64 PRTime; + +/* + * Time zone and daylight saving time corrections applied to GMT to + * obtain the local time of some geographic location + */ + +typedef struct PRTimeParameters { + PRInt32 tp_gmt_offset; /* the offset from GMT in seconds */ + PRInt32 tp_dst_offset; /* contribution of DST in seconds */ +} PRTimeParameters; + +/* + * PRExplodedTime -- + * + * Time broken down into human-readable components such as year, month, + * day, hour, minute, second, and microsecond. Time zone and daylight + * saving time corrections may be applied. If they are applied, the + * offsets from the GMT must be saved in the 'tm_params' field so that + * all the information is available to reconstruct GMT. + * + * Notes on porting: PRExplodedTime corrresponds to struct tm in + * ANSI C, with the following differences: + * - an additional field tm_usec; + * - replacing tm_isdst by tm_params; + * - the month field is spelled tm_month, not tm_mon; + * - we use absolute year, AD, not the year since 1900. + * The corresponding type in NSPR 1.0 is called PRTime. Below is + * a table of date/time type correspondence in the three APIs: + * API time since epoch time in components + * ANSI C time_t struct tm + * NSPR 1.0 PRInt64 PRTime + * NSPR 2.0 PRTime PRExplodedTime + */ + +typedef struct PRExplodedTime { + PRInt32 tm_usec; /* microseconds past tm_sec (0-99999) */ + PRInt32 tm_sec; /* seconds past tm_min (0-61, accomodating + up to two leap seconds) */ + PRInt32 tm_min; /* minutes past tm_hour (0-59) */ + PRInt32 tm_hour; /* hours past tm_day (0-23) */ + PRInt32 tm_mday; /* days past tm_mon (1-31, note that it + starts from 1) */ + PRInt32 tm_month; /* months past tm_year (0-11, Jan = 0) */ + PRInt16 tm_year; /* absolute year, AD (note that we do not + count from 1900) */ + + PRInt8 tm_wday; /* calculated day of the week + (0-6, Sun = 0) */ + PRInt16 tm_yday; /* calculated day of the year + (0-365, Jan 1 = 0) */ + + PRTimeParameters tm_params; /* time parameters used by conversion */ +} PRExplodedTime; + +NSPR_API(PRTime) +PR_ImplodeTime(const PRExplodedTime *exploded); + +/* + * This parses a time/date string into a PRTime + * (microseconds after "1-Jan-1970 00:00:00 GMT"). + * It returns PR_SUCCESS on success, and PR_FAILURE + * if the time/date string can't be parsed. + * + * Many formats are handled, including: + * + * 14 Apr 89 03:20:12 + * 14 Apr 89 03:20 GMT + * Fri, 17 Mar 89 4:01:33 + * Fri, 17 Mar 89 4:01 GMT + * Mon Jan 16 16:12 PDT 1989 + * Mon Jan 16 16:12 +0130 1989 + * 6 May 1992 16:41-JST (Wednesday) + * 22-AUG-1993 10:59:12.82 + * 22-AUG-1993 10:59pm + * 22-AUG-1993 12:59am + * 22-AUG-1993 12:59 PM + * Friday, August 04, 1995 3:54 PM + * 06/21/95 04:24:34 PM + * 20/06/95 21:07 + * 95-06-08 19:32:48 EDT + * + * If the input string doesn't contain a description of the timezone, + * we consult the `default_to_gmt' to decide whether the string should + * be interpreted relative to the local time zone (PR_FALSE) or GMT (PR_TRUE). + * The correct value for this argument depends on what standard specified + * the time string which you are parsing. + */ + +NSPR_API(PRStatus) PR_ParseTimeString ( + const char *string, + PRBool default_to_gmt, + PRTime *result); + +#endif // BASE_PRTIME_H__ |