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-rw-r--r--compat/strftime.c538
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diff --git a/compat/strftime.c b/compat/strftime.c
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-/*
- * strftime.c --
- *
- * This file contains a modified version of the BSD 4.4 strftime
- * function.
- *
- * This file is a modified version of the strftime.c file from the BSD 4.4
- * source. See the copyright notice below for details on redistribution
- * restrictions. The "license.terms" file does not apply to this file.
- *
- * Changes 2002 Copyright (c) 2002 ActiveState Corporation.
- *
- * RCS: @(#) $Id: strftime.c,v 1.17 2004/09/08 18:46:18 kennykb Exp $
- */
-
-/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS)
-static char *rcsid = "$Id: strftime.c,v 1.17 2004/09/08 18:46:18 kennykb Exp $";
-#endif /* LIBC_SCCS */
-
-#include <time.h>
-#include <string.h>
-#include <locale.h>
-#include "tclInt.h"
-
-#define TM_YEAR_BASE 1900
-#define IsLeapYear(x) ((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0))
-
-/*
- * Structure type holding the locale-dependent strings for formatting
- * times. The strings are all expected to be encoded in UTF-8.
- */
-
-typedef struct {
- const char *abday[7]; /* Abbreviated weekday names */
- const char *day[7]; /* Full weekday names */
- const char *abmon[12]; /* Abbreviated month names */
- const char *mon[12]; /* Full month name */
- const char *am_pm[2]; /* The strings to use for meridian time
- * (am, pm) */
- const char *d_t_fmt; /* The locale-dependent date-time format */
- const char *d_fmt; /* The locale-dependent date format */
- const char *t_fmt; /* The locale-dependent 24hr time format */
- const char *t_fmt_ampm; /* The locale-dependent 12hr time format */
-} _TimeLocale;
-
-/*
- * This is the C locale default. On Windows, if we wanted to make this
- * localized, we would use GetLocaleInfo to get the correct values.
- * It may be acceptable to do localization of month/day names, as the
- * numerical values would be considered the locale-independent versions.
- */
-static const _TimeLocale _DefaultTimeLocale =
-{
- {
- "Sun","Mon","Tue","Wed","Thu","Fri","Sat",
- },
- {
- "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
- "Friday", "Saturday"
- },
- {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- },
- {
- "January", "February", "March", "April", "May", "June", "July",
- "August", "September", "October", "November", "December"
- },
- {
- "AM", "PM"
- },
- "%a %b %d %H:%M:%S %Y",
- "%m/%d/%y",
- "%H:%M:%S",
- "%I:%M:%S %p"
-};
-
-static CONST _TimeLocale *_CurrentTimeLocale = &_DefaultTimeLocale;
-
-static int isGMT;
-static size_t gsize;
-static char *pt;
-static int _add _ANSI_ARGS_((CONST char* str));
-static int _conv _ANSI_ARGS_((int n, int digits, int pad));
-static int _secs _ANSI_ARGS_((CONST struct tm *t));
-static size_t _fmt _ANSI_ARGS_((CONST char *format,
- const struct tm *t));
-static int ISO8601Week _ANSI_ARGS_((CONST struct tm* t, int *year ));
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpStrftime --
- *
- * Formats a time (in 'struct tm' representation) for use by
- * [clock format].
- *
- * Results:
- * Returns the length of the formatted string.
- *
- * Side effects:
- * Stores the formatted string in the 's' parameter. The
- * formatted string is returned in UTF-8 encoding, *not* the
- * system encoding.
- *
- *----------------------------------------------------------------------
- */
-
-size_t
-TclpStrftime(s, maxsize, format, t, useGMT)
- char *s; /* Buffer to hold the formatted string */
- size_t maxsize; /* Size of the passed buffer */
- CONST char *format; /* Format to use (see the user documentation
- * for [clock] for details) */
- CONST struct tm *t; /* Time to format */
- int useGMT; /* Flag == 1 if time is to be returned
- * in UTC */
-{
- if (format[0] == '%' && format[1] == 'Q') {
- /* Format as a stardate */
- sprintf(s, "Stardate %2d%03d.%01d",
- (((t->tm_year + TM_YEAR_BASE) + 377) - 2323),
- (((t->tm_yday + 1) * 1000) /
- (365 + IsLeapYear((t->tm_year + TM_YEAR_BASE)))),
- (((t->tm_hour * 60) + t->tm_min)/144));
- return(strlen(s));
- }
-
- isGMT = useGMT;
- /*
- * We may be able to skip this for useGMT, but it should be harmless.
- * -- hobbs
- */
- tzset();
-
- pt = s;
- if ((gsize = maxsize) < 1)
- return(0);
- if (_fmt(format, t)) {
- *pt = '\0';
- return(maxsize - gsize);
- }
- return(0);
-}
-
-#define SUN_WEEK(t) (((t)->tm_yday + 7 - \
- ((t)->tm_wday)) / 7)
-#define MON_WEEK(t) (((t)->tm_yday + 7 - \
- ((t)->tm_wday ? (t)->tm_wday - 1 : 6)) / 7)
-
-static size_t
-_fmt(format, t)
- CONST char *format;
- CONST struct tm *t;
-{
-#ifdef __WIN32__
-#define BUF_SIZ 256
- TCHAR buf[BUF_SIZ];
- SYSTEMTIME syst;
- syst.wYear = t->tm_year + 1900;
- syst.wMonth = t->tm_mon + 1;
- syst.wDayOfWeek = t->tm_wday;
- syst.wDay = t->tm_mday;
- syst.wHour = t->tm_hour;
- syst.wMinute = t->tm_min;
- syst.wSecond = t->tm_sec;
- syst.wMilliseconds = 0;
-#endif
- for (; *format; ++format) {
- if (*format == '%') {
- ++format;
- if (*format == 'E') {
- /* Alternate Era */
- ++format;
- } else if (*format == 'O') {
- /* Alternate numeric symbols */
- ++format;
- }
- switch(*format) {
- case '\0':
- --format;
- break;
- case 'A':
- if (t->tm_wday < 0 || t->tm_wday > 6)
- return(0);
- if (!_add(_CurrentTimeLocale->day[t->tm_wday]))
- return(0);
- continue;
- case 'a':
- if (t->tm_wday < 0 || t->tm_wday > 6)
- return(0);
- if (!_add(_CurrentTimeLocale->abday[t->tm_wday]))
- return(0);
- continue;
- case 'B':
- if (t->tm_mon < 0 || t->tm_mon > 11)
- return(0);
- if (!_add(_CurrentTimeLocale->mon[t->tm_mon]))
- return(0);
- continue;
- case 'b':
- case 'h':
- if (t->tm_mon < 0 || t->tm_mon > 11)
- return(0);
- if (!_add(_CurrentTimeLocale->abmon[t->tm_mon]))
- return(0);
- continue;
- case 'C':
- if (!_conv((t->tm_year + TM_YEAR_BASE) / 100,
- 2, '0'))
- return(0);
- continue;
- case 'D':
- if (!_fmt("%m/%d/%y", t))
- return(0);
- continue;
- case 'd':
- if (!_conv(t->tm_mday, 2, '0'))
- return(0);
- continue;
- case 'e':
- if (!_conv(t->tm_mday, 2, ' '))
- return(0);
- continue;
- case 'g':
- {
- int year;
- ISO8601Week( t, &year );
- if ( !_conv( year%100, 2, '0' ) ) {
- return( 0 );
- }
- continue;
- }
- case 'G':
- {
- int year;
- ISO8601Week( t, &year );
- if ( !_conv( year, 4, '0' ) ) {
- return( 0 );
- }
- continue;
- }
- case 'H':
- if (!_conv(t->tm_hour, 2, '0'))
- return(0);
- continue;
- case 'I':
- if (!_conv(t->tm_hour % 12 ?
- t->tm_hour % 12 : 12, 2, '0'))
- return(0);
- continue;
- case 'j':
- if (!_conv(t->tm_yday + 1, 3, '0'))
- return(0);
- continue;
- case 'k':
- if (!_conv(t->tm_hour, 2, ' '))
- return(0);
- continue;
- case 'l':
- if (!_conv(t->tm_hour % 12 ?
- t->tm_hour % 12: 12, 2, ' '))
- return(0);
- continue;
- case 'M':
- if (!_conv(t->tm_min, 2, '0'))
- return(0);
- continue;
- case 'm':
- if (!_conv(t->tm_mon + 1, 2, '0'))
- return(0);
- continue;
- case 'n':
- if (!_add("\n"))
- return(0);
- continue;
- case 'p':
- if (!_add(_CurrentTimeLocale->am_pm[t->tm_hour >= 12]))
- return(0);
- continue;
- case 'R':
- if (!_fmt("%H:%M", t))
- return(0);
- continue;
- case 'r':
- if (!_fmt(_CurrentTimeLocale->t_fmt_ampm, t))
- return(0);
- continue;
- case 'S':
- if (!_conv(t->tm_sec, 2, '0'))
- return(0);
- continue;
- case 's':
- if (!_secs(t))
- return(0);
- continue;
- case 'T':
- if (!_fmt("%H:%M:%S", t))
- return(0);
- continue;
- case 't':
- if (!_add("\t"))
- return(0);
- continue;
- case 'U':
- if (!_conv(SUN_WEEK(t), 2, '0'))
- return(0);
- continue;
- case 'u':
- if (!_conv(t->tm_wday ? t->tm_wday : 7, 1, '0'))
- return(0);
- continue;
- case 'V':
- {
- int week = ISO8601Week( t, NULL );
- if (!_conv(week, 2, '0'))
- return(0);
- continue;
- }
- case 'W':
- if (!_conv(MON_WEEK(t), 2, '0'))
- return(0);
- continue;
- case 'w':
- if (!_conv(t->tm_wday, 1, '0'))
- return(0);
- continue;
-#ifdef __WIN32__
- /*
- * To properly handle the localized time routines on Windows,
- * we must make use of the special localized calls.
- */
- case 'c':
- if (!GetDateFormat(LOCALE_USER_DEFAULT, DATE_LONGDATE,
- &syst, NULL, buf, BUF_SIZ) || !_add(buf)
- || !_add(" ")) {
- return(0);
- }
- /*
- * %c is created with LONGDATE + " " + TIME on Windows,
- * so continue to %X case here.
- */
- case 'X':
- if (!GetTimeFormat(LOCALE_USER_DEFAULT, 0,
- &syst, NULL, buf, BUF_SIZ) || !_add(buf)) {
- return(0);
- }
- continue;
- case 'x':
- if (!GetDateFormat(LOCALE_USER_DEFAULT, DATE_SHORTDATE,
- &syst, NULL, buf, BUF_SIZ) || !_add(buf)) {
- return(0);
- }
- continue;
-#else
- case 'c':
- if (!_fmt(_CurrentTimeLocale->d_t_fmt, t))
- return(0);
- continue;
- case 'x':
- if (!_fmt(_CurrentTimeLocale->d_fmt, t))
- return(0);
- continue;
- case 'X':
- if (!_fmt(_CurrentTimeLocale->t_fmt, t))
- return(0);
- continue;
-#endif
- case 'y':
- if (!_conv((t->tm_year + TM_YEAR_BASE) % 100,
- 2, '0'))
- return(0);
- continue;
- case 'Y':
- if (!_conv((t->tm_year + TM_YEAR_BASE), 4, '0'))
- return(0);
- continue;
- case 'Z': {
- char *name = (isGMT ? "GMT" : TclpGetTZName(t->tm_isdst));
- if (name && !_add(name)) {
- return 0;
- }
- continue;
- }
- case '%':
- /*
- * X311J/88-090 (4.12.3.5): if conversion char is
- * undefined, behavior is undefined. Print out the
- * character itself as printf(3) does.
- */
- default:
- break;
- }
- }
- if (!gsize--)
- return(0);
- *pt++ = *format;
- }
- return(gsize);
-}
-
-static int
-_secs(t)
- CONST struct tm *t;
-{
- static char buf[15];
- register time_t s;
- register char *p;
- struct tm tmp;
-
- /* Make a copy, mktime(3) modifies the tm struct. */
- tmp = *t;
- s = mktime(&tmp);
- for (p = buf + sizeof(buf) - 2; s > 0 && p > buf; s /= 10)
- *p-- = (char)(s % 10 + '0');
- return(_add(++p));
-}
-
-static int
-_conv(n, digits, pad)
- int n, digits;
- int pad;
-{
- static char buf[10];
- register char *p;
-
- p = buf + sizeof( buf ) - 1;
- *p-- = '\0';
- if ( n == 0 ) {
- *p-- = '0';
- } else {
- for (; n > 0 && p > buf; n /= 10, --digits)
- *p-- = (char)(n % 10 + '0');
- }
- while (p > buf && digits-- > 0)
- *p-- = (char) pad;
- return(_add(++p));
-}
-
-static int
-_add(str)
- const char *str;
-{
- for (;; ++pt, --gsize) {
- if (!gsize)
- return(0);
- if (!(*pt = *str++))
- return(1);
- }
-}
-
-static int
-ISO8601Week( t, year )
- CONST struct tm* t;
- int* year;
-{
- /* Find the day-of-year of the Thursday in
- * the week in question. */
-
- int ydayThursday;
- int week;
- if ( t->tm_wday == 0 ) {
- ydayThursday = t->tm_yday - 3;
- } else {
- ydayThursday = t->tm_yday - t->tm_wday + 4;
- }
-
- if ( ydayThursday < 0 ) {
-
- /* This is the last week of the previous year. */
- if ( IsLeapYear(( t->tm_year + TM_YEAR_BASE - 1 )) ) {
- ydayThursday += 366;
- } else {
- ydayThursday += 365;
- }
- week = ydayThursday / 7 + 1;
- if ( year != NULL ) {
- *year = t->tm_year + 1899;
- }
-
- } else if ( ( IsLeapYear(( t -> tm_year + TM_YEAR_BASE ))
- && ydayThursday >= 366 )
- || ( !IsLeapYear(( t -> tm_year
- + TM_YEAR_BASE ))
- && ydayThursday >= 365 ) ) {
-
- /* This is week 1 of the following year */
-
- week = 1;
- if ( year != NULL ) {
- *year = t->tm_year + 1901;
- }
-
- } else {
-
- week = ydayThursday / 7 + 1;
- if ( year != NULL ) {
- *year = t->tm_year + 1900;
- }
-
- }
-
- return week;
-
-}
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