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NS/releases/valve/source/stlport/src/time_facets.cpp
puzl f44f16d59a made a copy 
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@168 67975925-1194-0748-b3d5-c16f83f1a3a1
2005-06-08 18:52:38 +00:00

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/*
* Copyright (c) 1999
* Silicon Graphics Computer Systems, Inc.
*
* Copyright (c) 1999
* Boris Fomitchev
*
* This material is provided "as is", with absolutely no warranty expressed
* or implied. Any use is at your own risk.
*
* Permission to use or copy this software for any purpose is hereby granted
* without fee, provided the above notices are retained on all copies.
* Permission to modify the code and to distribute modified code is granted,
* provided the above notices are retained, and a notice that the code was
* modified is included with the above copyright notice.
*
*/
#include "stlport_prefix.h"
#include <stl/_time_facets.h>
#include <stl/_istream.h>
#include "c_locale.h"
_STLP_BEGIN_NAMESPACE
char* _STLP_CALL
__write_integer(char* buf, ios_base::fmtflags flags, long x);
// The function copy_cstring is used to initialize a string
// with a C-style string. Used to initialize the month and weekday
// tables in time_get and time_put. Called only by _Init_timeinfo
// so its name does not require leading underscores.
static inline void copy_cstring(const char * s, string& v) {
copy(s, s + strlen(s), back_insert_iterator<string >(v));
}
// default "C" values for month and day names
const char default_dayname[][14] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
"Friday", "Saturday"};
const char default_monthname[][24] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
"January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"};
// _Init_time_info: initialize table with
// "C" values (note these are not defined in the C standard, so this
// is somewhat arbitrary).
void _STLP_CALL _Init_timeinfo(_Time_Info& table) {
int i;
for (i = 0; i < 14; ++i)
copy_cstring(default_dayname[i], table._M_dayname[i]);
for (i = 0; i < 24; ++i)
copy_cstring(default_monthname[i], table._M_monthname[i]);
copy_cstring("AM", table._M_am_pm[0]);
copy_cstring("PM", table._M_am_pm[1]);
copy_cstring("%H:%M:%S", table._M_time_format);
copy_cstring("%m/%d/%y", table._M_date_format);
copy_cstring("%a %b %e %H:%M:%S %Y", table._M_date_time_format);
}
void _STLP_CALL _Init_timeinfo(_Time_Info& table, _Locale_time * time) {
int i;
for (i = 0; i < 7; ++i)
copy_cstring(_Locale_abbrev_dayofweek(time, i),
table._M_dayname[i]);
for (i = 0; i < 7; ++i)
copy_cstring(_Locale_full_dayofweek(time, i),
table._M_dayname[i+7]);
for (i = 0; i < 12; ++i)
copy_cstring(_Locale_abbrev_monthname(time, i),
table._M_monthname[i]);
for (i = 0; i < 12; ++i)
copy_cstring(_Locale_full_monthname(time, i),
table._M_monthname[i+12]);
copy_cstring(_Locale_am_str(time),
table._M_am_pm[0]);
copy_cstring(_Locale_pm_str(time),
table._M_am_pm[1]);
copy_cstring(_Locale_t_fmt(time), table._M_time_format);
copy_cstring(_Locale_d_fmt(time), table._M_date_format);
copy_cstring(_Locale_d_t_fmt(time), table._M_date_time_format);
copy_cstring(_Locale_long_d_fmt(time), table._M_long_date_format);
copy_cstring(_Locale_long_d_t_fmt(time), table._M_long_date_time_format);
}
inline char* __subformat(string format, char*& buf,
const _Time_Info& table, const tm* t) {
const char * cp = format.data();
const char * cp_end = cp + format.size();
while (cp != cp_end) {
if (*cp == '%') {
char mod = 0;
++cp;
if(*cp == '#') {
mod = *cp; ++cp;
}
buf = __write_formatted_time(buf, *cp++, mod, table, t);
} else
*buf++ = *cp++;
}
return buf;
}
/* The number of days from the first day of the first ISO week of this
year to the year day YDAY with week day WDAY. ISO weeks start on
Monday; the first ISO week has the year's first Thursday. YDAY may
be as small as YDAY_MINIMUM. */
#define __ISO_WEEK_START_WDAY 1 /* Monday */
#define __ISO_WEEK1_WDAY 4 /* Thursday */
#define __YDAY_MINIMUM (-366)
#define __TM_YEAR_BASE 1900
static int
__iso_week_days (int yday, int wday)
{
/* Add enough to the first operand of % to make it nonnegative. */
int big_enough_multiple_of_7 = (-__YDAY_MINIMUM / 7 + 2) * 7;
return (yday
- (yday - wday + __ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
+ __ISO_WEEK1_WDAY - __ISO_WEEK_START_WDAY);
}
#define __is_leap(year) \
((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
#define __hour12(hour) \
(((hour) % 12 == 0) ? (12) : (hour) % 12)
char * __write_formatted_time(char* buf, char format, char modifier,
const _Time_Info& table, const tm* t) {
switch(format) {
case 'a':
return copy(table._M_dayname[t->tm_wday].begin(),
table._M_dayname[t->tm_wday].end(),
buf);
case 'A':
return copy(table._M_dayname[t->tm_wday+7].begin(),
table._M_dayname[t->tm_wday+7].end(),
buf);
case 'b':
return copy(table._M_monthname[t->tm_mon].begin(),
table._M_monthname[t->tm_mon].end(),
buf);
case 'B':
return copy(table._M_monthname[t->tm_mon+12].begin(),
table._M_monthname[t->tm_mon+12].end(),
buf);
case 'c': {
const char * cp = (modifier != '#') ? table._M_date_time_format.data():\
table._M_long_date_time_format.data();
const char* cp_end = (modifier != '#') ? cp + table._M_date_time_format.size():\
cp + table._M_long_date_time_format.size();
char mod = 0;
while (cp != cp_end) {
if (*cp == '%') {
++cp; if(*cp == '#') mod = *cp++; else mod = 0;
buf = __write_formatted_time(buf, *cp++, mod, table, t);
}
else
*buf++ = *cp++;
}
return buf;
}
case 'd':
sprintf(buf, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_mday);
return ((long)t->tm_mday < 10L && modifier == '#')?buf+1:buf + 2;
case 'e':
sprintf(buf, "%2ld", (long)t->tm_mday);
return buf + 2;
case 'H':
sprintf(buf, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_hour);
return ((long)t->tm_hour < 10L && modifier == '#')?buf+1:buf + 2;
case 'I':
sprintf(buf, (modifier != '#')?"%.2ld":"%ld", (long)__hour12(t->tm_hour));
return ((long)__hour12(t->tm_hour) < 10L && modifier == '#')?buf+1:buf + 2;
case 'j':
return __write_integer(buf, 0, (long)((long)t->tm_yday + 1));
case 'm':
sprintf(buf, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_mon + 1);
return ((long)(t->tm_mon + 1) < 10L && modifier == '#')?buf+1:buf + 2;
case 'M':
sprintf(buf, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_min);
return ((long)t->tm_min < 10L && modifier == '#')?buf+1:buf + 2;
case 'p':
return copy(table._M_am_pm[t->tm_hour/12].begin(),
table._M_am_pm[t->tm_hour/12].end(),
buf);
case 'S': // pad with zeros
sprintf(buf, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_sec);
return ((long)t->tm_sec < 10L && modifier == '#')?buf+1:buf + 2;
case 'U':
return __write_integer(buf, 0,
long((t->tm_yday - t->tm_wday + 7) / 7));
// break;
case 'w':
return __write_integer(buf, 0, (long)t->tm_wday);
// break;
case 'W':
return __write_integer(buf, 0,
(long)(t->tm_wday == 0 ?
(t->tm_yday + 1) / 7 :
(t->tm_yday + 8 - t->tm_wday) / 7));
case'x': {
const char * cp = (modifier != '#') ? table._M_date_format.data():\
table._M_long_date_format.data();
const char* cp_end = (modifier != '#') ? cp + table._M_date_format.size():\
cp + table._M_long_date_format.size();
char mod = 0;
while (cp != cp_end) {
if (*cp == '%') {
++cp; if(*cp == '#') mod = *cp++; else mod = 0;
buf = __write_formatted_time(buf, *cp++, mod, table, t);
}
else
*buf++ = *cp++;
}
return buf;
}
case 'X': {
const char * cp = table._M_time_format.data();
const char* cp_end = cp + table._M_time_format.size();
char mod = 0;
while (cp != cp_end) {
if (*cp == '%') {
++cp; if(*cp == '#') mod = *cp++; else mod = 0;
buf = __write_formatted_time(buf, *cp++, mod, table, t);
}
else
*buf++ = *cp++;
}
return buf;
}
case 'y':
return __write_integer(buf, 0, (long)((long)(t->tm_year + 1900) % 100));
case 'Y':
return __write_integer(buf, 0, (long)((long)t->tm_year + 1900));
case '%':
*buf++ = '%';
return buf;
#ifdef __GNUC__
// fbp : at least on SUN
# if defined ( _STLP_UNIX ) && ! defined (__linux__)
# define __USE_BSD 1
# endif
/*********************************************
* JGS, handle various extensions *
*********************************************/
case 'h': /* POSIX.2 extension */
// same as 'b', abbrev month name
return copy(table._M_monthname[t->tm_mon].begin(),
table._M_monthname[t->tm_mon].end(),
buf);
case 'C': /* POSIX.2 extension */
// same as 'd', the day
sprintf(buf, "%2ld", (long)t->tm_mday);
return buf + 2;
case 'D': /* POSIX.2 extension */
// same as 'x'
return __subformat(table._M_date_format, buf, table, t);
case 'k': /* GNU extension */
sprintf(buf, "%2ld", (long)t->tm_hour);
return buf + 2;
case 'l': /* GNU extension */
sprintf(buf, "%2ld", (long)t->tm_hour % 12);
return buf + 2;
case 'n': /* POSIX.2 extension */
*buf++ = '\n';
return buf;
case 'R': /* GNU extension */
return __subformat("%H:%M", buf, table, t);
case 'r': /* POSIX.2 extension */
return __subformat("%I:%M:%S %p", buf, table, t);
case 'T': /* POSIX.2 extension. */
return __subformat("%H:%M:%S", buf, table, t);
case 't': /* POSIX.2 extension. */
*buf++ = '\t';
return buf;
case 'u': /* POSIX.2 extension. */
return __write_integer(buf, 0, long((t->tm_wday - 1 + 7)) % 7 + 1);
case 's': {
time_t __t;
__t = mktime ((tm*)t);
return __write_integer(buf, 0, (long)__t );
}
case 'g': /* GNU extension */
case 'G': {
int year = t->tm_year + __TM_YEAR_BASE;
int days = __iso_week_days (t->tm_yday, t->tm_wday);
if (days < 0) {
/* This ISO week belongs to the previous year. */
year--;
days = __iso_week_days (t->tm_yday + (365 + __is_leap (year)),
t->tm_wday);
} else {
int d = __iso_week_days (t->tm_yday - (365 + __is_leap (year)),
t->tm_wday);
if (0 <= d) {
/* This ISO week belongs to the next year. */
year++;
days = d;
}
}
switch (format) {
case 'g':
return __write_integer(buf, 0, (long)(year % 100 + 100) % 100);
case 'G':
return __write_integer(buf, 0, (long)year);
default:
return __write_integer(buf, 0, (long)days / 7 + 1);
}
}
# if defined ( _STLP_USE_GLIBC ) && ! defined (__CYGWIN__)
case 'z': /* GNU extension. */
if (t->tm_isdst < 0)
break;
{
int diff;
#if defined(__USE_BSD) || defined(__BEOS__)
diff = t->tm_gmtoff;
#else
diff = t->__tm_gmtoff;
#endif
if (diff < 0) {
*buf++ = '-';
diff = -diff;
} else
*buf++ = '+';
diff /= 60;
sprintf(buf, "%.4d", (diff / 60) * 100 + diff % 60);
return buf + 4;
}
# endif /* __GLIBC__ */
#endif /* __GNUC__ */
default:
// return buf;
break;
}
return buf;
}
time_base::dateorder _STLP_CALL
__get_date_order(_Locale_time* time)
{
const char * fmt = _Locale_d_fmt(time);
char first, second, third;
while (*fmt != 0 && *fmt != '%') ++fmt;
if (*fmt == 0)
return time_base::no_order;
first = *++fmt;
while (*fmt != 0 && *fmt != '%') ++fmt;
if (*fmt == 0)
return time_base::no_order;
second = *++fmt;
while (*fmt != 0 && *fmt != '%') ++fmt;
if (*fmt == 0)
return time_base::no_order;
third = *++fmt;
switch (first) {
case 'd':
return (second == 'm' && third == 'y') ? time_base::dmy
: time_base::no_order;
case 'm':
return (second == 'd' && third == 'y') ? time_base::mdy
: time_base::no_order;
case 'y':
switch (second) {
case 'd':
return third == 'm' ? time_base::ydm : time_base::no_order;
case 'm':
return third == 'd' ? time_base::ymd : time_base::no_order;
default:
return time_base::no_order;
}
default:
return time_base::no_order;
}
}
#if !defined(_STLP_NO_FORCE_INSTANTIATE)
template class time_get<char, istreambuf_iterator<char, char_traits<char> > >;
// template class time_get<char, const char*>;
template class time_put<char, ostreambuf_iterator<char, char_traits<char> > >;
// template class time_put<char, char*>;
#ifndef _STLP_NO_WCHAR_T
template class time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
// template class time_get<wchar_t, const wchar_t*>;
template class time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >;
// template class time_put<wchar_t, wchar_t*>;
#endif /* INSTANTIATE_WIDE_STREAMS */
#endif
_STLP_END_NAMESPACE
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