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Unified Diff: base/third_party/nspr/prtime.cc

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: base/third_party/nspr/prtime.cc
diff --git a/base/third_party/nspr/prtime.cc b/base/third_party/nspr/prtime.cc
deleted file mode 100644
index a7c5a3a949680ae87541d86e8c032a9fb432eab5..0000000000000000000000000000000000000000
--- a/base/third_party/nspr/prtime.cc
+++ /dev/null
@@ -1,1252 +0,0 @@
-/* Portions are Copyright (C) 2011 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.cc --
- * NOTE: The original nspr file name is prtime.c
- *
- * NSPR date and time functions
- *
- * CVS revision 3.37
- */
-
-/*
- * The following functions were copied from the NSPR prtime.c file.
- * PR_ParseTimeString
- * We inlined the new PR_ParseTimeStringToExplodedTime function to avoid
- * copying PR_ExplodeTime and PR_LocalTimeParameters. (The PR_ExplodeTime
- * and PR_ImplodeTime calls cancel each other out.)
- * PR_NormalizeTime
- * PR_GMTParameters
- * PR_ImplodeTime
- * This was modified to use the Win32 SYSTEMTIME/FILETIME structures
- * and the timezone offsets are applied to the FILETIME structure.
- * All types and macros are defined in the base/third_party/prtime.h file.
- * These have been copied from the following nspr files. We have only copied
- * over the types we need.
- * 1. prtime.h
- * 2. prtypes.h
- * 3. prlong.h
- *
- * Unit tests are in base/time/pr_time_unittest.cc.
- */
-
-#include "base/logging.h"
-#include "base/third_party/nspr/prtime.h"
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#elif defined(OS_MACOSX)
-#include <CoreFoundation/CoreFoundation.h>
-#elif defined(OS_ANDROID)
-#include <ctype.h>
-#include "base/os_compat_android.h" // For timegm()
-#elif defined(OS_NACL)
-#include "base/os_compat_nacl.h" // For timegm()
-#endif
-#include <errno.h> /* for EINVAL */
-#include <time.h>
-
-/* Implements the Unix localtime_r() function for windows */
-#if defined(OS_WIN)
-static void localtime_r(const time_t* secs, struct tm* time) {
- (void) localtime_s(time, secs);
-}
-#endif
-
-/*
- *------------------------------------------------------------------------
- *
- * PR_ImplodeTime --
- *
- * Cf. time_t mktime(struct tm *tp)
- * Note that 1 year has < 2^25 seconds. So an PRInt32 is large enough.
- *
- *------------------------------------------------------------------------
- */
-PRTime
-PR_ImplodeTime(const PRExplodedTime *exploded)
-{
- // This is important, we want to make sure multiplications are
- // done with the correct precision.
- static const PRTime kSecondsToMicroseconds = static_cast<PRTime>(1000000);
-#if defined(OS_WIN)
- // Create the system struct representing our exploded time.
- SYSTEMTIME st = {};
- FILETIME ft = {};
- ULARGE_INTEGER uli = {};
-
- st.wYear = exploded->tm_year;
- st.wMonth = static_cast<WORD>(exploded->tm_month + 1);
- st.wDayOfWeek = exploded->tm_wday;
- st.wDay = static_cast<WORD>(exploded->tm_mday);
- st.wHour = static_cast<WORD>(exploded->tm_hour);
- st.wMinute = static_cast<WORD>(exploded->tm_min);
- st.wSecond = static_cast<WORD>(exploded->tm_sec);
- st.wMilliseconds = static_cast<WORD>(exploded->tm_usec/1000);
- // Convert to FILETIME.
- if (!SystemTimeToFileTime(&st, &ft)) {
- NOTREACHED() << "Unable to convert time";
- return 0;
- }
- // Apply offsets.
- uli.LowPart = ft.dwLowDateTime;
- uli.HighPart = ft.dwHighDateTime;
- // Convert from Windows epoch to NSPR epoch, and 100-nanoseconds units
- // to microsecond units.
- PRTime result =
- static_cast<PRTime>((uli.QuadPart / 10) - 11644473600000000i64);
- // Adjust for time zone and dst. Convert from seconds to microseconds.
- result -= (exploded->tm_params.tp_gmt_offset +
- exploded->tm_params.tp_dst_offset) * kSecondsToMicroseconds;
- // Add microseconds that cannot be represented in |st|.
- result += exploded->tm_usec % 1000;
- return result;
-#elif defined(OS_MACOSX)
- // Create the system struct representing our exploded time.
- CFGregorianDate gregorian_date;
- gregorian_date.year = exploded->tm_year;
- gregorian_date.month = exploded->tm_month + 1;
- gregorian_date.day = exploded->tm_mday;
- gregorian_date.hour = exploded->tm_hour;
- gregorian_date.minute = exploded->tm_min;
- gregorian_date.second = exploded->tm_sec;
-
- // Compute |absolute_time| in seconds, correct for gmt and dst
- // (note the combined offset will be negative when we need to add it), then
- // convert to microseconds which is what PRTime expects.
- CFAbsoluteTime absolute_time =
- CFGregorianDateGetAbsoluteTime(gregorian_date, NULL);
- PRTime result = static_cast<PRTime>(absolute_time);
- result -= exploded->tm_params.tp_gmt_offset +
- exploded->tm_params.tp_dst_offset;
- result += kCFAbsoluteTimeIntervalSince1970; // PRTime epoch is 1970
- result *= kSecondsToMicroseconds;
- result += exploded->tm_usec;
- return result;
-#elif defined(OS_POSIX)
- struct tm exp_tm = {0};
- exp_tm.tm_sec = exploded->tm_sec;
- exp_tm.tm_min = exploded->tm_min;
- exp_tm.tm_hour = exploded->tm_hour;
- exp_tm.tm_mday = exploded->tm_mday;
- exp_tm.tm_mon = exploded->tm_month;
- exp_tm.tm_year = exploded->tm_year - 1900;
-
- time_t absolute_time = timegm(&exp_tm);
-
- // If timegm returned -1. Since we don't pass it a time zone, the only
- // valid case of returning -1 is 1 second before Epoch (Dec 31, 1969).
- if (absolute_time == -1 &&
- !(exploded->tm_year == 1969 && exploded->tm_month == 11 &&
- exploded->tm_mday == 31 && exploded->tm_hour == 23 &&
- exploded->tm_min == 59 && exploded->tm_sec == 59)) {
- // If we get here, time_t must be 32 bits.
- // Date was possibly too far in the future and would overflow. Return
- // the most future date possible (year 2038).
- if (exploded->tm_year >= 1970)
- return INT_MAX * kSecondsToMicroseconds;
- // Date was possibly too far in the past and would underflow. Return
- // the most past date possible (year 1901).
- return INT_MIN * kSecondsToMicroseconds;
- }
-
- PRTime result = static_cast<PRTime>(absolute_time);
- result -= exploded->tm_params.tp_gmt_offset +
- exploded->tm_params.tp_dst_offset;
- result *= kSecondsToMicroseconds;
- result += exploded->tm_usec;
- return result;
-#else
-#error No PR_ImplodeTime implemented on your platform.
-#endif
-}
-
-/*
- * The COUNT_LEAPS macro counts the number of leap years passed by
- * till the start of the given year Y. At the start of the year 4
- * A.D. the number of leap years passed by is 0, while at the start of
- * the year 5 A.D. this count is 1. The number of years divisible by
- * 100 but not divisible by 400 (the non-leap years) is deducted from
- * the count to get the correct number of leap years.
- *
- * The COUNT_DAYS macro counts the number of days since 01/01/01 till the
- * start of the given year Y. The number of days at the start of the year
- * 1 is 0 while the number of days at the start of the year 2 is 365
- * (which is ((2)-1) * 365) and so on. The reference point is 01/01/01
- * midnight 00:00:00.
- */
-
-#define COUNT_LEAPS(Y) ( ((Y)-1)/4 - ((Y)-1)/100 + ((Y)-1)/400 )
-#define COUNT_DAYS(Y) ( ((Y)-1)*365 + COUNT_LEAPS(Y) )
-#define DAYS_BETWEEN_YEARS(A, B) (COUNT_DAYS(B) - COUNT_DAYS(A))
-
-/*
- * Static variables used by functions in this file
- */
-
-/*
- * The following array contains the day of year for the last day of
- * each month, where index 1 is January, and day 0 is January 1.
- */
-
-static const int lastDayOfMonth[2][13] = {
- {-1, 30, 58, 89, 119, 150, 180, 211, 242, 272, 303, 333, 364},
- {-1, 30, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365}
-};
-
-/*
- * The number of days in a month
- */
-
-static const PRInt8 nDays[2][12] = {
- {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
- {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
-};
-
-/*
- *-------------------------------------------------------------------------
- *
- * IsLeapYear --
- *
- * Returns 1 if the year is a leap year, 0 otherwise.
- *
- *-------------------------------------------------------------------------
- */
-
-static int IsLeapYear(PRInt16 year)
-{
- if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
- return 1;
- else
- return 0;
-}
-
-/*
- * 'secOffset' should be less than 86400 (i.e., a day).
- * 'time' should point to a normalized PRExplodedTime.
- */
-
-static void
-ApplySecOffset(PRExplodedTime *time, PRInt32 secOffset)
-{
- time->tm_sec += secOffset;
-
- /* Note that in this implementation we do not count leap seconds */
- if (time->tm_sec < 0 || time->tm_sec >= 60) {
- time->tm_min += time->tm_sec / 60;
- time->tm_sec %= 60;
- if (time->tm_sec < 0) {
- time->tm_sec += 60;
- time->tm_min--;
- }
- }
-
- if (time->tm_min < 0 || time->tm_min >= 60) {
- time->tm_hour += time->tm_min / 60;
- time->tm_min %= 60;
- if (time->tm_min < 0) {
- time->tm_min += 60;
- time->tm_hour--;
- }
- }
-
- if (time->tm_hour < 0) {
- /* Decrement mday, yday, and wday */
- time->tm_hour += 24;
- time->tm_mday--;
- time->tm_yday--;
- if (time->tm_mday < 1) {
- time->tm_month--;
- if (time->tm_month < 0) {
- time->tm_month = 11;
- time->tm_year--;
- if (IsLeapYear(time->tm_year))
- time->tm_yday = 365;
- else
- time->tm_yday = 364;
- }
- time->tm_mday = nDays[IsLeapYear(time->tm_year)][time->tm_month];
- }
- time->tm_wday--;
- if (time->tm_wday < 0)
- time->tm_wday = 6;
- } else if (time->tm_hour > 23) {
- /* Increment mday, yday, and wday */
- time->tm_hour -= 24;
- time->tm_mday++;
- time->tm_yday++;
- if (time->tm_mday >
- nDays[IsLeapYear(time->tm_year)][time->tm_month]) {
- time->tm_mday = 1;
- time->tm_month++;
- if (time->tm_month > 11) {
- time->tm_month = 0;
- time->tm_year++;
- time->tm_yday = 0;
- }
- }
- time->tm_wday++;
- if (time->tm_wday > 6)
- time->tm_wday = 0;
- }
-}
-
-void
-PR_NormalizeTime(PRExplodedTime *time, PRTimeParamFn params)
-{
- int daysInMonth;
- PRInt32 numDays;
-
- /* Get back to GMT */
- time->tm_sec -= time->tm_params.tp_gmt_offset
- + time->tm_params.tp_dst_offset;
- time->tm_params.tp_gmt_offset = 0;
- time->tm_params.tp_dst_offset = 0;
-
- /* Now normalize GMT */
-
- if (time->tm_usec < 0 || time->tm_usec >= 1000000) {
- time->tm_sec += time->tm_usec / 1000000;
- time->tm_usec %= 1000000;
- if (time->tm_usec < 0) {
- time->tm_usec += 1000000;
- time->tm_sec--;
- }
- }
-
- /* Note that we do not count leap seconds in this implementation */
- if (time->tm_sec < 0 || time->tm_sec >= 60) {
- time->tm_min += time->tm_sec / 60;
- time->tm_sec %= 60;
- if (time->tm_sec < 0) {
- time->tm_sec += 60;
- time->tm_min--;
- }
- }
-
- if (time->tm_min < 0 || time->tm_min >= 60) {
- time->tm_hour += time->tm_min / 60;
- time->tm_min %= 60;
- if (time->tm_min < 0) {
- time->tm_min += 60;
- time->tm_hour--;
- }
- }
-
- if (time->tm_hour < 0 || time->tm_hour >= 24) {
- time->tm_mday += time->tm_hour / 24;
- time->tm_hour %= 24;
- if (time->tm_hour < 0) {
- time->tm_hour += 24;
- time->tm_mday--;
- }
- }
-
- /* Normalize month and year before mday */
- if (time->tm_month < 0 || time->tm_month >= 12) {
- time->tm_year += static_cast<PRInt16>(time->tm_month / 12);
- time->tm_month %= 12;
- if (time->tm_month < 0) {
- time->tm_month += 12;
- time->tm_year--;
- }
- }
-
- /* Now that month and year are in proper range, normalize mday */
-
- if (time->tm_mday < 1) {
- /* mday too small */
- do {
- /* the previous month */
- time->tm_month--;
- if (time->tm_month < 0) {
- time->tm_month = 11;
- time->tm_year--;
- }
- time->tm_mday += nDays[IsLeapYear(time->tm_year)][time->tm_month];
- } while (time->tm_mday < 1);
- } else {
- daysInMonth = nDays[IsLeapYear(time->tm_year)][time->tm_month];
- while (time->tm_mday > daysInMonth) {
- /* mday too large */
- time->tm_mday -= daysInMonth;
- time->tm_month++;
- if (time->tm_month > 11) {
- time->tm_month = 0;
- time->tm_year++;
- }
- daysInMonth = nDays[IsLeapYear(time->tm_year)][time->tm_month];
- }
- }
-
- /* Recompute yday and wday */
- time->tm_yday = static_cast<PRInt16>(time->tm_mday +
- lastDayOfMonth[IsLeapYear(time->tm_year)][time->tm_month]);
-
- numDays = DAYS_BETWEEN_YEARS(1970, time->tm_year) + time->tm_yday;
- time->tm_wday = (numDays + 4) % 7;
- if (time->tm_wday < 0) {
- time->tm_wday += 7;
- }
-
- /* Recompute time parameters */
-
- time->tm_params = params(time);
-
- ApplySecOffset(time, time->tm_params.tp_gmt_offset
- + time->tm_params.tp_dst_offset);
-}
-
-/*
- *------------------------------------------------------------------------
- *
- * PR_GMTParameters --
- *
- * Returns the PRTimeParameters for Greenwich Mean Time.
- * Trivially, both the tp_gmt_offset and tp_dst_offset fields are 0.
- *
- *------------------------------------------------------------------------
- */
-
-PRTimeParameters
-PR_GMTParameters(const PRExplodedTime *gmt)
-{
- PRTimeParameters retVal = { 0, 0 };
- return retVal;
-}
-
-/*
- * The following code implements PR_ParseTimeString(). It is based on
- * ns/lib/xp/xp_time.c, revision 1.25, by Jamie Zawinski <jwz@netscape.com>.
- */
-
-/*
- * We only recognize the abbreviations of a small subset of time zones
- * in North America, Europe, and Japan.
- *
- * PST/PDT: Pacific Standard/Daylight Time
- * MST/MDT: Mountain Standard/Daylight Time
- * CST/CDT: Central Standard/Daylight Time
- * EST/EDT: Eastern Standard/Daylight Time
- * AST: Atlantic Standard Time
- * NST: Newfoundland Standard Time
- * GMT: Greenwich Mean Time
- * BST: British Summer Time
- * MET: Middle Europe Time
- * EET: Eastern Europe Time
- * JST: Japan Standard Time
- */
-
-typedef enum
-{
- TT_UNKNOWN,
-
- TT_SUN, TT_MON, TT_TUE, TT_WED, TT_THU, TT_FRI, TT_SAT,
-
- TT_JAN, TT_FEB, TT_MAR, TT_APR, TT_MAY, TT_JUN,
- TT_JUL, TT_AUG, TT_SEP, TT_OCT, TT_NOV, TT_DEC,
-
- TT_PST, TT_PDT, TT_MST, TT_MDT, TT_CST, TT_CDT, TT_EST, TT_EDT,
- TT_AST, TT_NST, TT_GMT, TT_BST, TT_MET, TT_EET, TT_JST
-} TIME_TOKEN;
-
-/*
- * 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
- * 1995-06-17T23:11:25.342156Z
- *
- * 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.
- */
-
-PRStatus
-PR_ParseTimeString(
- const char *string,
- PRBool default_to_gmt,
- PRTime *result_imploded)
-{
- PRExplodedTime tm;
- PRExplodedTime *result = &tm;
- TIME_TOKEN dotw = TT_UNKNOWN;
- TIME_TOKEN month = TT_UNKNOWN;
- TIME_TOKEN zone = TT_UNKNOWN;
- int zone_offset = -1;
- int dst_offset = 0;
- int date = -1;
- PRInt32 year = -1;
- int hour = -1;
- int min = -1;
- int sec = -1;
- int usec = -1;
-
- const char *rest = string;
-
- int iterations = 0;
-
- PR_ASSERT(string && result);
- if (!string || !result) return PR_FAILURE;
-
- while (*rest)
- {
-
- if (iterations++ > 1000)
- {
- return PR_FAILURE;
- }
-
- switch (*rest)
- {
- case 'a': case 'A':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'p' || rest[1] == 'P') &&
- (rest[2] == 'r' || rest[2] == 'R'))
- month = TT_APR;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_AST;
- else if (month == TT_UNKNOWN &&
- (rest[1] == 'u' || rest[1] == 'U') &&
- (rest[2] == 'g' || rest[2] == 'G'))
- month = TT_AUG;
- break;
- case 'b': case 'B':
- if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_BST;
- break;
- case 'c': case 'C':
- if (zone == TT_UNKNOWN &&
- (rest[1] == 'd' || rest[1] == 'D') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_CDT;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_CST;
- break;
- case 'd': case 'D':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'e' || rest[1] == 'E') &&
- (rest[2] == 'c' || rest[2] == 'C'))
- month = TT_DEC;
- break;
- case 'e': case 'E':
- if (zone == TT_UNKNOWN &&
- (rest[1] == 'd' || rest[1] == 'D') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_EDT;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 'e' || rest[1] == 'E') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_EET;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_EST;
- break;
- case 'f': case 'F':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'e' || rest[1] == 'E') &&
- (rest[2] == 'b' || rest[2] == 'B'))
- month = TT_FEB;
- else if (dotw == TT_UNKNOWN &&
- (rest[1] == 'r' || rest[1] == 'R') &&
- (rest[2] == 'i' || rest[2] == 'I'))
- dotw = TT_FRI;
- break;
- case 'g': case 'G':
- if (zone == TT_UNKNOWN &&
- (rest[1] == 'm' || rest[1] == 'M') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_GMT;
- break;
- case 'j': case 'J':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'a' || rest[1] == 'A') &&
- (rest[2] == 'n' || rest[2] == 'N'))
- month = TT_JAN;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_JST;
- else if (month == TT_UNKNOWN &&
- (rest[1] == 'u' || rest[1] == 'U') &&
- (rest[2] == 'l' || rest[2] == 'L'))
- month = TT_JUL;
- else if (month == TT_UNKNOWN &&
- (rest[1] == 'u' || rest[1] == 'U') &&
- (rest[2] == 'n' || rest[2] == 'N'))
- month = TT_JUN;
- break;
- case 'm': case 'M':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'a' || rest[1] == 'A') &&
- (rest[2] == 'r' || rest[2] == 'R'))
- month = TT_MAR;
- else if (month == TT_UNKNOWN &&
- (rest[1] == 'a' || rest[1] == 'A') &&
- (rest[2] == 'y' || rest[2] == 'Y'))
- month = TT_MAY;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 'd' || rest[1] == 'D') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_MDT;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 'e' || rest[1] == 'E') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_MET;
- else if (dotw == TT_UNKNOWN &&
- (rest[1] == 'o' || rest[1] == 'O') &&
- (rest[2] == 'n' || rest[2] == 'N'))
- dotw = TT_MON;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_MST;
- break;
- case 'n': case 'N':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'o' || rest[1] == 'O') &&
- (rest[2] == 'v' || rest[2] == 'V'))
- month = TT_NOV;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_NST;
- break;
- case 'o': case 'O':
- if (month == TT_UNKNOWN &&
- (rest[1] == 'c' || rest[1] == 'C') &&
- (rest[2] == 't' || rest[2] == 'T'))
- month = TT_OCT;
- break;
- case 'p': case 'P':
- if (zone == TT_UNKNOWN &&
- (rest[1] == 'd' || rest[1] == 'D') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_PDT;
- else if (zone == TT_UNKNOWN &&
- (rest[1] == 's' || rest[1] == 'S') &&
- (rest[2] == 't' || rest[2] == 'T'))
- zone = TT_PST;
- break;
- case 's': case 'S':
- if (dotw == TT_UNKNOWN &&
- (rest[1] == 'a' || rest[1] == 'A') &&
- (rest[2] == 't' || rest[2] == 'T'))
- dotw = TT_SAT;
- else if (month == TT_UNKNOWN &&
- (rest[1] == 'e' || rest[1] == 'E') &&
- (rest[2] == 'p' || rest[2] == 'P'))
- month = TT_SEP;
- else if (dotw == TT_UNKNOWN &&
- (rest[1] == 'u' || rest[1] == 'U') &&
- (rest[2] == 'n' || rest[2] == 'N'))
- dotw = TT_SUN;
- break;
- case 't': case 'T':
- if (dotw == TT_UNKNOWN &&
- (rest[1] == 'h' || rest[1] == 'H') &&
- (rest[2] == 'u' || rest[2] == 'U'))
- dotw = TT_THU;
- else if (dotw == TT_UNKNOWN &&
- (rest[1] == 'u' || rest[1] == 'U') &&
- (rest[2] == 'e' || rest[2] == 'E'))
- dotw = TT_TUE;
- break;
- case 'u': case 'U':
- if (zone == TT_UNKNOWN &&
- (rest[1] == 't' || rest[1] == 'T') &&
- !(rest[2] >= 'A' && rest[2] <= 'Z') &&
- !(rest[2] >= 'a' && rest[2] <= 'z'))
- /* UT is the same as GMT but UTx is not. */
- zone = TT_GMT;
- break;
- case 'w': case 'W':
- if (dotw == TT_UNKNOWN &&
- (rest[1] == 'e' || rest[1] == 'E') &&
- (rest[2] == 'd' || rest[2] == 'D'))
- dotw = TT_WED;
- break;
-
- case '+': case '-':
- {
- const char *end;
- int sign;
- if (zone_offset != -1)
- {
- /* already got one... */
- rest++;
- break;
- }
- if (zone != TT_UNKNOWN && zone != TT_GMT)
- {
- /* GMT+0300 is legal, but PST+0300 is not. */
- rest++;
- break;
- }
-
- sign = ((*rest == '+') ? 1 : -1);
- rest++; /* move over sign */
- end = rest;
- while (*end >= '0' && *end <= '9')
- end++;
- if (rest == end) /* no digits here */
- break;
-
- if ((end - rest) == 4)
- /* offset in HHMM */
- zone_offset = (((((rest[0]-'0')*10) + (rest[1]-'0')) * 60) +
- (((rest[2]-'0')*10) + (rest[3]-'0')));
- else if ((end - rest) == 2)
- /* offset in hours */
- zone_offset = (((rest[0]-'0')*10) + (rest[1]-'0')) * 60;
- else if ((end - rest) == 1)
- /* offset in hours */
- zone_offset = (rest[0]-'0') * 60;
- else
- /* 3 or >4 */
- break;
-
- zone_offset *= sign;
- zone = TT_GMT;
- break;
- }
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- {
- int tmp_hour = -1;
- int tmp_min = -1;
- int tmp_sec = -1;
- int tmp_usec = -1;
- const char *end = rest + 1;
- while (*end >= '0' && *end <= '9')
- end++;
-
- /* end is now the first character after a range of digits. */
-
- if (*end == ':')
- {
- if (hour >= 0 && min >= 0) /* already got it */
- break;
-
- /* We have seen "[0-9]+:", so this is probably HH:MM[:SS] */
- if ((end - rest) > 2)
- /* it is [0-9][0-9][0-9]+: */
- break;
- else if ((end - rest) == 2)
- tmp_hour = ((rest[0]-'0')*10 +
- (rest[1]-'0'));
- else
- tmp_hour = (rest[0]-'0');
-
- /* move over the colon, and parse minutes */
-
- rest = ++end;
- while (*end >= '0' && *end <= '9')
- end++;
-
- if (end == rest)
- /* no digits after first colon? */
- break;
- else if ((end - rest) > 2)
- /* it is [0-9][0-9][0-9]+: */
- break;
- else if ((end - rest) == 2)
- tmp_min = ((rest[0]-'0')*10 +
- (rest[1]-'0'));
- else
- tmp_min = (rest[0]-'0');
-
- /* now go for seconds */
- rest = end;
- if (*rest == ':')
- rest++;
- end = rest;
- while (*end >= '0' && *end <= '9')
- end++;
-
- if (end == rest)
- /* no digits after second colon - that's ok. */
- ;
- else if ((end - rest) > 2)
- /* it is [0-9][0-9][0-9]+: */
- break;
- else if ((end - rest) == 2)
- tmp_sec = ((rest[0]-'0')*10 +
- (rest[1]-'0'));
- else
- tmp_sec = (rest[0]-'0');
-
- /* fractional second */
- rest = end;
- if (*rest == '.')
- {
- rest++;
- end++;
- tmp_usec = 0;
- /* use up to 6 digits, skip over the rest */
- while (*end >= '0' && *end <= '9')
- {
- if (end - rest < 6)
- tmp_usec = tmp_usec * 10 + *end - '0';
- end++;
- }
- int ndigits = end - rest;
- while (ndigits++ < 6)
- tmp_usec *= 10;
- rest = end;
- }
-
- if (*rest == 'Z')
- {
- zone = TT_GMT;
- rest++;
- }
- else if (tmp_hour <= 12)
- {
- /* If we made it here, we've parsed hour and min,
- and possibly sec, so the current token is a time.
- Now skip over whitespace and see if there's an AM
- or PM directly following the time.
- */
- const char *s = end;
- while (*s && (*s == ' ' || *s == '\t'))
- s++;
- if ((s[0] == 'p' || s[0] == 'P') &&
- (s[1] == 'm' || s[1] == 'M'))
- /* 10:05pm == 22:05, and 12:05pm == 12:05 */
- tmp_hour = (tmp_hour == 12 ? 12 : tmp_hour + 12);
- else if (tmp_hour == 12 &&
- (s[0] == 'a' || s[0] == 'A') &&
- (s[1] == 'm' || s[1] == 'M'))
- /* 12:05am == 00:05 */
- tmp_hour = 0;
- }
-
- hour = tmp_hour;
- min = tmp_min;
- sec = tmp_sec;
- usec = tmp_usec;
- rest = end;
- break;
- }
- else if ((*end == '/' || *end == '-') &&
- end[1] >= '0' && end[1] <= '9')
- {
- /* Perhaps this is 6/16/95, 16/6/95, 6-16-95, or 16-6-95
- or even 95-06-05 or 1995-06-22.
- */
- int n1, n2, n3;
- const char *s;
-
- if (month != TT_UNKNOWN)
- /* if we saw a month name, this can't be. */
- break;
-
- s = rest;
-
- n1 = (*s++ - '0'); /* first 1, 2 or 4 digits */
- if (*s >= '0' && *s <= '9')
- {
- n1 = n1*10 + (*s++ - '0');
-
- if (*s >= '0' && *s <= '9') /* optional digits 3 and 4 */
- {
- n1 = n1*10 + (*s++ - '0');
- if (*s < '0' || *s > '9')
- break;
- n1 = n1*10 + (*s++ - '0');
- }
- }
-
- if (*s != '/' && *s != '-') /* slash */
- break;
- s++;
-
- if (*s < '0' || *s > '9') /* second 1 or 2 digits */
- break;
- n2 = (*s++ - '0');
- if (*s >= '0' && *s <= '9')
- n2 = n2*10 + (*s++ - '0');
-
- if (*s != '/' && *s != '-') /* slash */
- break;
- s++;
-
- if (*s < '0' || *s > '9') /* third 1, 2, 4, or 5 digits */
- break;
- n3 = (*s++ - '0');
- if (*s >= '0' && *s <= '9')
- n3 = n3*10 + (*s++ - '0');
-
- if (*s >= '0' && *s <= '9') /* optional digits 3, 4, and 5 */
- {
- n3 = n3*10 + (*s++ - '0');
- if (*s < '0' || *s > '9')
- break;
- n3 = n3*10 + (*s++ - '0');
- if (*s >= '0' && *s <= '9')
- n3 = n3*10 + (*s++ - '0');
- }
-
- if (*s == 'T' && s[1] >= '0' && s[1] <= '9')
- /* followed by ISO 8601 T delimiter and number is ok */
- ;
- else if ((*s >= '0' && *s <= '9') ||
- (*s >= 'A' && *s <= 'Z') ||
- (*s >= 'a' && *s <= 'z'))
- /* but other alphanumerics are not ok */
- break;
-
- /* Ok, we parsed three multi-digit numbers, with / or -
- between them. Now decide what the hell they are
- (DD/MM/YY or MM/DD/YY or [YY]YY/MM/DD.)
- */
-
- if (n1 > 31 || n1 == 0) /* must be [YY]YY/MM/DD */
- {
- if (n2 > 12) break;
- if (n3 > 31) break;
- year = n1;
- if (year < 70)
- year += 2000;
- else if (year < 100)
- year += 1900;
- month = (TIME_TOKEN)(n2 + ((int)TT_JAN) - 1);
- date = n3;
- rest = s;
- break;
- }
-
- if (n1 > 12 && n2 > 12) /* illegal */
- {
- rest = s;
- break;
- }
-
- if (n3 < 70)
- n3 += 2000;
- else if (n3 < 100)
- n3 += 1900;
-
- if (n1 > 12) /* must be DD/MM/YY */
- {
- date = n1;
- month = (TIME_TOKEN)(n2 + ((int)TT_JAN) - 1);
- year = n3;
- }
- else /* assume MM/DD/YY */
- {
- /* #### In the ambiguous case, should we consult the
- locale to find out the local default? */
- month = (TIME_TOKEN)(n1 + ((int)TT_JAN) - 1);
- date = n2;
- year = n3;
- }
- rest = s;
- }
- else if ((*end >= 'A' && *end <= 'Z') ||
- (*end >= 'a' && *end <= 'z'))
- /* Digits followed by non-punctuation - what's that? */
- ;
- else if ((end - rest) == 5) /* five digits is a year */
- year = (year < 0
- ? ((rest[0]-'0')*10000L +
- (rest[1]-'0')*1000L +
- (rest[2]-'0')*100L +
- (rest[3]-'0')*10L +
- (rest[4]-'0'))
- : year);
- else if ((end - rest) == 4) /* four digits is a year */
- year = (year < 0
- ? ((rest[0]-'0')*1000L +
- (rest[1]-'0')*100L +
- (rest[2]-'0')*10L +
- (rest[3]-'0'))
- : year);
- else if ((end - rest) == 2) /* two digits - date or year */
- {
- int n = ((rest[0]-'0')*10 +
- (rest[1]-'0'));
- /* If we don't have a date (day of the month) and we see a number
- less than 32, then assume that is the date.
-
- Otherwise, if we have a date and not a year, assume this is the
- year. If it is less than 70, then assume it refers to the 21st
- century. If it is two digits (>= 70), assume it refers to this
- century. Otherwise, assume it refers to an unambiguous year.
-
- The world will surely end soon.
- */
- if (date < 0 && n < 32)
- date = n;
- else if (year < 0)
- {
- if (n < 70)
- year = 2000 + n;
- else if (n < 100)
- year = 1900 + n;
- else
- year = n;
- }
- /* else what the hell is this. */
- }
- else if ((end - rest) == 1) /* one digit - date */
- date = (date < 0 ? (rest[0]-'0') : date);
- /* else, three or more than five digits - what's that? */
-
- break;
- } /* case '0' .. '9' */
- } /* switch */
-
- /* Skip to the end of this token, whether we parsed it or not.
- Tokens are delimited by whitespace, or ,;-+/()[] but explicitly not .:
- 'T' is also treated as delimiter when followed by a digit (ISO 8601).
- */
- while (*rest &&
- *rest != ' ' && *rest != '\t' &&
- *rest != ',' && *rest != ';' &&
- *rest != '-' && *rest != '+' &&
- *rest != '/' &&
- *rest != '(' && *rest != ')' && *rest != '[' && *rest != ']' &&
- !(*rest == 'T' && rest[1] >= '0' && rest[1] <= '9')
- )
- rest++;
- /* skip over uninteresting chars. */
- SKIP_MORE:
- while (*rest == ' ' || *rest == '\t' ||
- *rest == ',' || *rest == ';' || *rest == '/' ||
- *rest == '(' || *rest == ')' || *rest == '[' || *rest == ']')
- rest++;
-
- /* "-" is ignored at the beginning of a token if we have not yet
- parsed a year (e.g., the second "-" in "30-AUG-1966"), or if
- the character after the dash is not a digit. */
- if (*rest == '-' && ((rest > string &&
- isalpha((unsigned char)rest[-1]) && year < 0) ||
- rest[1] < '0' || rest[1] > '9'))
- {
- rest++;
- goto SKIP_MORE;
- }
-
- /* Skip T that may precede ISO 8601 time. */
- if (*rest == 'T' && rest[1] >= '0' && rest[1] <= '9')
- rest++;
- } /* while */
-
- if (zone != TT_UNKNOWN && zone_offset == -1)
- {
- switch (zone)
- {
- case TT_PST: zone_offset = -8 * 60; break;
- case TT_PDT: zone_offset = -8 * 60; dst_offset = 1 * 60; break;
- case TT_MST: zone_offset = -7 * 60; break;
- case TT_MDT: zone_offset = -7 * 60; dst_offset = 1 * 60; break;
- case TT_CST: zone_offset = -6 * 60; break;
- case TT_CDT: zone_offset = -6 * 60; dst_offset = 1 * 60; break;
- case TT_EST: zone_offset = -5 * 60; break;
- case TT_EDT: zone_offset = -5 * 60; dst_offset = 1 * 60; break;
- case TT_AST: zone_offset = -4 * 60; break;
- case TT_NST: zone_offset = -3 * 60 - 30; break;
- case TT_GMT: zone_offset = 0 * 60; break;
- case TT_BST: zone_offset = 0 * 60; dst_offset = 1 * 60; break;
- case TT_MET: zone_offset = 1 * 60; break;
- case TT_EET: zone_offset = 2 * 60; break;
- case TT_JST: zone_offset = 9 * 60; break;
- default:
- PR_ASSERT (0);
- break;
- }
- }
-
- /* If we didn't find a year, month, or day-of-the-month, we can't
- possibly parse this, and in fact, mktime() will do something random
- (I'm seeing it return "Tue Feb 5 06:28:16 2036", which is no doubt
- a numerologically significant date... */
- if (month == TT_UNKNOWN || date == -1 || year == -1 || year > PR_INT16_MAX)
- return PR_FAILURE;
-
- memset(result, 0, sizeof(*result));
- if (usec != -1)
- result->tm_usec = usec;
- if (sec != -1)
- result->tm_sec = sec;
- if (min != -1)
- result->tm_min = min;
- if (hour != -1)
- result->tm_hour = hour;
- if (date != -1)
- result->tm_mday = date;
- if (month != TT_UNKNOWN)
- result->tm_month = (((int)month) - ((int)TT_JAN));
- if (year != -1)
- result->tm_year = static_cast<PRInt16>(year);
- if (dotw != TT_UNKNOWN)
- result->tm_wday = static_cast<PRInt8>(((int)dotw) - ((int)TT_SUN));
- /*
- * Mainly to compute wday and yday, but normalized time is also required
- * by the check below that works around a Visual C++ 2005 mktime problem.
- */
- PR_NormalizeTime(result, PR_GMTParameters);
- /* The remaining work is to set the gmt and dst offsets in tm_params. */
-
- if (zone == TT_UNKNOWN && default_to_gmt)
- {
- /* No zone was specified, so pretend the zone was GMT. */
- zone = TT_GMT;
- zone_offset = 0;
- }
-
- if (zone_offset == -1)
- {
- /* no zone was specified, and we're to assume that everything
- is local. */
- struct tm localTime;
- time_t secs;
-
- PR_ASSERT(result->tm_month > -1 &&
- result->tm_mday > 0 &&
- result->tm_hour > -1 &&
- result->tm_min > -1 &&
- result->tm_sec > -1);
-
- /*
- * To obtain time_t from a tm structure representing the local
- * time, we call mktime(). However, we need to see if we are
- * on 1-Jan-1970 or before. If we are, we can't call mktime()
- * because mktime() will crash on win16. In that case, we
- * calculate zone_offset based on the zone offset at
- * 00:00:00, 2 Jan 1970 GMT, and subtract zone_offset from the
- * date we are parsing to transform the date to GMT. We also
- * do so if mktime() returns (time_t) -1 (time out of range).
- */
-
- /* month, day, hours, mins and secs are always non-negative
- so we dont need to worry about them. */
- if (result->tm_year >= 1970)
- {
- localTime.tm_sec = result->tm_sec;
- localTime.tm_min = result->tm_min;
- localTime.tm_hour = result->tm_hour;
- localTime.tm_mday = result->tm_mday;
- localTime.tm_mon = result->tm_month;
- localTime.tm_year = result->tm_year - 1900;
- /* Set this to -1 to tell mktime "I don't care". If you set
- it to 0 or 1, you are making assertions about whether the
- date you are handing it is in daylight savings mode or not;
- and if you're wrong, it will "fix" it for you. */
- localTime.tm_isdst = -1;
-
-#if _MSC_VER == 1400 /* 1400 = Visual C++ 2005 (8.0) */
- /*
- * mktime will return (time_t) -1 if the input is a date
- * after 23:59:59, December 31, 3000, US Pacific Time (not
- * UTC as documented):
- * http://msdn.microsoft.com/en-us/library/d1y53h2a(VS.80).aspx
- * But if the year is 3001, mktime also invokes the invalid
- * parameter handler, causing the application to crash. This
- * problem has been reported in
- * http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=266036.
- * We avoid this crash by not calling mktime if the date is
- * out of range. To use a simple test that works in any time
- * zone, we consider year 3000 out of range as well. (See
- * bug 480740.)
- */
- if (result->tm_year >= 3000) {
- /* Emulate what mktime would have done. */
- errno = EINVAL;
- secs = (time_t) -1;
- } else {
- secs = mktime(&localTime);
- }
-#else
- secs = mktime(&localTime);
-#endif
- if (secs != (time_t) -1)
- {
- *result_imploded = (PRInt64)secs * PR_USEC_PER_SEC;
- *result_imploded += result->tm_usec;
- return PR_SUCCESS;
- }
- }
-
- /* So mktime() can't handle this case. We assume the
- zone_offset for the date we are parsing is the same as
- the zone offset on 00:00:00 2 Jan 1970 GMT. */
- secs = 86400;
- localtime_r(&secs, &localTime);
- zone_offset = localTime.tm_min
- + 60 * localTime.tm_hour
- + 1440 * (localTime.tm_mday - 2);
- }
-
- result->tm_params.tp_gmt_offset = zone_offset * 60;
- result->tm_params.tp_dst_offset = dst_offset * 60;
-
- *result_imploded = PR_ImplodeTime(result);
- return PR_SUCCESS;
-}
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