/* -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*- */
/* vim:set sts=4 ts=8: */
/*
* Copyright (c) 2001-2007 International Computer Science Institute
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software")
* to deal in the Software without restriction, subject to the conditions
* listed in the XORP LICENSE file. These conditions include: you must
* preserve this copyright notice, and you cannot mention the copyright
* holders in advertising related to the Software without their permission.
* The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
* notice is a summary of the XORP LICENSE file; the license in that file is
* legally binding.
*/
#ident "$XORP: xorp/libxorp/strptime.c,v 1.14 2007/02/16 22:46:23 pavlin Exp $"
/*
* strptime(3) implementation: a parser for data and time string
*/
/*
* XXX: the particular implementation is taken from NetBSD-current
* (as of 2006/02/06).
* The rest is a front-end for it.
* Note that the local implementation is used only if the system
* doesn't have its own strptime(3) implementation.
*
* The changes are:
* - Included <time.h> and <strings.h>
* - The global function named strptime() is redefined as static
* and is renamed to local_strptime().
* - The inclusion of some header files is removed.
* - Sone unused structure definitions are removed.
* - Conditional usage of __weak_alias() is removed.
* - TM_YEAR_BASE is defined conditionally.
* - A local implementation of UNUSED() is added.
* - All usage of isspace() is replaced with xorp_isspace().
* - New function xorp_strptime() is added as a front-end for
* the local implementation.
* - Replaced "u_char" with "unsigned char" and "uint"
* with "unsigned int".
*/
/*
* XXX: Linux's glibc2 and NetBSD need to define _XOPEN_SOURCE for strptime(3).
*
* On the other hand, OpenBSD-3.9 cannot process <net/if.h> (included by
* "libxorp/xorp.h") if _XOPEN_SOURCE is defined.
* Hence, as an exception we include some stuff before "libxorp/xorp.h",
* but then we undefine _XOPEN_SOURCE
*/
#define _XOPEN_SOURCE 500
#include <time.h>
#include <strings.h>
#undef _XOPEN_SOURCE
#include <string.h>
/*
* XXX: don't include "libxorp/xorp.h", because it cannot be compiled
* on Solaris 10 if _XOPEN_SOURCE is defined: _XOPEN_SOURCE itself
* controls the definition of some other symbols.
* Instead, include "config.h" and all other header files that may
* be needed.
*/
/* #include "libxorp/xorp.h" */
#include "config.h"
#include "libxorp/utility.h"
#ifndef TM_YEAR_BASE
#define TM_YEAR_BASE 1900
#endif
static inline void *
UNCONST(const void *a)
{
return ((const char *)a - (const char *)0) + (char *)0;
}
/* $NetBSD: localedef.h,v 1.7 2005/11/29 03:12:16 christos Exp $ */
/*
* Copyright (c) 1994 Winning Strategies, Inc.
* 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 Winning Strategies, Inc.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
typedef struct {
const char *abday[7];
const char *day[7];
const char *abmon[12];
const char *mon[12];
const char *am_pm[2];
const char *d_t_fmt;
const char *d_fmt;
const char *t_fmt;
const char *t_fmt_ampm;
} _TimeLocale;
/* $NetBSD: _def_time.c,v 1.8 2005/06/12 05:21:27 lukem Exp $ */
/*
* Written by J.T. Conklin <jtc@NetBSD.org>.
* Public domain.
*/
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: _def_time.c,v 1.8 2005/06/12 05:21:27 lukem Exp $");
#endif /* LIBC_SCCS and not lint */
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 %e %H:%M:%S %Y",
"%m/%d/%y",
"%H:%M:%S",
"%I:%M:%S %p"
};
const _TimeLocale *_CurrentTimeLocale = &_DefaultTimeLocale;
/* $NetBSD: strptime.c,v 1.25 2005/11/29 03:12:00 christos Exp $ */
/*-
* Copyright (c) 1997, 1998, 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code was contributed to The NetBSD Foundation by Klaus Klein.
* Heavily optimised by David Laight
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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) && !defined(lint)
__RCSID("$NetBSD: strptime.c,v 1.25 2005/11/29 03:12:00 christos Exp $");
#endif
#define _ctloc(x) (_CurrentTimeLocale->x)
/*
* We do not implement alternate representations. However, we always
* check whether a given modifier is allowed for a certain conversion.
*/
#define ALT_E 0x01
#define ALT_O 0x02
#define LEGAL_ALT(x) { if (alt_format & ~(x)) return NULL; }
static const unsigned char *conv_num(const unsigned char *, int *,
unsigned int, unsigned int);
static const unsigned char *find_string(const unsigned char *, int *,
const char * const *,
const char * const *, int);
static char *
local_strptime(const char *buf, const char *fmt, struct tm *tm)
{
unsigned char c;
const unsigned char *bp;
int alt_format, i, split_year = 0;
const char *new_fmt;
bp = (const unsigned char *)buf;
while (bp != NULL && (c = *fmt++) != '\0') {
/* Clear `alternate' modifier prior to new conversion. */
alt_format = 0;
i = 0;
/* Eat up white-space. */
if (xorp_isspace(c)) {
while (xorp_isspace(*bp))
bp++;
continue;
}
if (c != '%')
goto literal;
again: switch (c = *fmt++) {
case '%': /* "%%" is converted to "%". */
literal:
if (c != *bp++)
return NULL;
LEGAL_ALT(0);
continue;
/*
* "Alternative" modifiers. Just set the appropriate flag
* and start over again.
*/
case 'E': /* "%E?" alternative conversion modifier. */
LEGAL_ALT(0);
alt_format |= ALT_E;
goto again;
case 'O': /* "%O?" alternative conversion modifier. */
LEGAL_ALT(0);
alt_format |= ALT_O;
goto again;
/*
* "Complex" conversion rules, implemented through recursion.
*/
case 'c': /* Date and time, using the locale's format. */
new_fmt = _ctloc(d_t_fmt);
goto recurse;
case 'D': /* The date as "%m/%d/%y". */
new_fmt = "%m/%d/%y";
LEGAL_ALT(0);
goto recurse;
case 'R': /* The time as "%H:%M". */
new_fmt = "%H:%M";
LEGAL_ALT(0);
goto recurse;
case 'r': /* The time in 12-hour clock representation. */
new_fmt =_ctloc(t_fmt_ampm);
LEGAL_ALT(0);
goto recurse;
case 'T': /* The time as "%H:%M:%S". */
new_fmt = "%H:%M:%S";
LEGAL_ALT(0);
goto recurse;
case 'X': /* The time, using the locale's format. */
new_fmt =_ctloc(t_fmt);
goto recurse;
case 'x': /* The date, using the locale's format. */
new_fmt =_ctloc(d_fmt);
recurse:
bp = (const unsigned char *)local_strptime((const char *)bp,
new_fmt, tm);
LEGAL_ALT(ALT_E);
continue;
/*
* "Elementary" conversion rules.
*/
case 'A': /* The day of week, using the locale's form. */
case 'a':
bp = find_string(bp, &tm->tm_wday, _ctloc(day),
_ctloc(abday), 7);
LEGAL_ALT(0);
continue;
case 'B': /* The month, using the locale's form. */
case 'b':
case 'h':
bp = find_string(bp, &tm->tm_mon, _ctloc(mon),
_ctloc(abmon), 12);
LEGAL_ALT(0);
continue;
case 'C': /* The century number. */
i = 20;
bp = conv_num(bp, &i, 0, 99);
i = i * 100 - TM_YEAR_BASE;
if (split_year)
i += tm->tm_year % 100;
split_year = 1;
tm->tm_year = i;
LEGAL_ALT(ALT_E);
continue;
case 'd': /* The day of month. */
case 'e':
bp = conv_num(bp, &tm->tm_mday, 1, 31);
LEGAL_ALT(ALT_O);
continue;
case 'k': /* The hour (24-hour clock representation). */
LEGAL_ALT(0);
/* FALLTHROUGH */
case 'H':
bp = conv_num(bp, &tm->tm_hour, 0, 23);
LEGAL_ALT(ALT_O);
continue;
case 'l': /* The hour (12-hour clock representation). */
LEGAL_ALT(0);
/* FALLTHROUGH */
case 'I':
bp = conv_num(bp, &tm->tm_hour, 1, 12);
if (tm->tm_hour == 12)
tm->tm_hour = 0;
LEGAL_ALT(ALT_O);
continue;
case 'j': /* The day of year. */
i = 1;
bp = conv_num(bp, &i, 1, 366);
tm->tm_yday = i - 1;
LEGAL_ALT(0);
continue;
case 'M': /* The minute. */
bp = conv_num(bp, &tm->tm_min, 0, 59);
LEGAL_ALT(ALT_O);
continue;
case 'm': /* The month. */
i = 1;
bp = conv_num(bp, &i, 1, 12);
tm->tm_mon = i - 1;
LEGAL_ALT(ALT_O);
continue;
case 'p': /* The locale's equivalent of AM/PM. */
bp = find_string(bp, &i, _ctloc(am_pm), NULL, 2);
if (tm->tm_hour > 11)
return NULL;
tm->tm_hour += i * 12;
LEGAL_ALT(0);
continue;
case 'S': /* The seconds. */
bp = conv_num(bp, &tm->tm_sec, 0, 61);
LEGAL_ALT(ALT_O);
continue;
case 'U': /* The week of year, beginning on sunday. */
case 'W': /* The week of year, beginning on monday. */
/*
* XXX This is bogus, as we can not assume any valid
* information present in the tm structure at this
* point to calculate a real value, so just check the
* range for now.
*/
bp = conv_num(bp, &i, 0, 53);
LEGAL_ALT(ALT_O);
continue;
case 'w': /* The day of week, beginning on sunday. */
bp = conv_num(bp, &tm->tm_wday, 0, 6);
LEGAL_ALT(ALT_O);
continue;
case 'Y': /* The year. */
i = TM_YEAR_BASE; /* just for data sanity... */
bp = conv_num(bp, &i, 0, 9999);
tm->tm_year = i - TM_YEAR_BASE;
LEGAL_ALT(ALT_E);
continue;
case 'y': /* The year within 100 years of the epoch. */
/* LEGAL_ALT(ALT_E | ALT_O); */
bp = conv_num(bp, &i, 0, 99);
if (split_year)
/* preserve century */
i += (tm->tm_year / 100) * 100;
else {
split_year = 1;
if (i <= 68)
i = i + 2000 - TM_YEAR_BASE;
else
i = i + 1900 - TM_YEAR_BASE;
}
tm->tm_year = i;
continue;
/*
* Miscellaneous conversions.
*/
case 'n': /* Any kind of white-space. */
case 't':
while (xorp_isspace(*bp))
bp++;
LEGAL_ALT(0);
continue;
default: /* Unknown/unsupported conversion. */
return NULL;
}
}
return (char *)UNCONST(bp);
}
static const unsigned char *
conv_num(const unsigned char *buf, int *dest, unsigned int llim,
unsigned int ulim)
{
unsigned int result = 0;
unsigned char ch;
/* The limit also determines the number of valid digits. */
unsigned int rulim = ulim;
ch = *buf;
if (ch < '0' || ch > '9')
return NULL;
do {
result *= 10;
result += ch - '0';
rulim /= 10;
ch = *++buf;
} while ((result * 10 <= ulim) && rulim && ch >= '0' && ch <= '9');
if (result < llim || result > ulim)
return NULL;
*dest = result;
return buf;
}
/*
* XXX: The Windows' equivalent of strncasecmp(3) is called _strnicmp()
* hence we need to do some renaming here.
*/
#ifdef HOST_OS_WINDOWS
#define STRNCASECMP(s1, s2, len) _strnicmp(s1, s2, len)
#else
#define STRNCASECMP(s1, s2, len) strncasecmp(s1, s2, len)
#endif
static const unsigned char *
find_string(const unsigned char *bp, int *tgt, const char * const *n1,
const char * const *n2, int c)
{
int i;
unsigned int len;
/* check full name - then abbreviated ones */
for (; n1 != NULL; n1 = n2, n2 = NULL) {
for (i = 0; i < c; i++, n1++) {
len = strlen(*n1);
if (STRNCASECMP(*n1, (const char *)bp, len) == 0) {
*tgt = i;
return bp + len;
}
}
}
/* Nothing matched */
return NULL;
}
char *
xorp_strptime(const char *buf, const char *fmt, struct tm *tm)
{
#ifdef HAVE_STRPTIME
return strptime(buf, fmt, tm);
#else
return local_strptime(buf, fmt, tm);
#endif
}
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