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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.
*
*/
#ifndef _STLP_TIME_FACETS_C
#define _STLP_TIME_FACETS_C
#ifndef _STLP_INTERNAL_TIME_FACETS_H
# include <stl/_time_facets.h>
#endif
#ifndef _STLP_INTERNAL_NUM_PUT_H
# include <stl/_num_put.h>
#endif
#ifndef _STLP_INTERNAL_NUM_GET_H
# include <stl/_num_get.h>
#endif
_STLP_BEGIN_NAMESPACE
//----------------------------------------------------------------------
// Declarations of static template members.
template <class _CharT, class _InputIterator>
locale::id time_get<_CharT, _InputIterator>::id;
template <class _CharT, class _OutputIterator>
locale::id time_put<_CharT, _OutputIterator>::id;
_STLP_MOVE_TO_PRIV_NAMESPACE
/* Matching input against a list of names
* Alphabetic input of the names of months and the names
* of weekdays requires matching input against a list of names.
* We use a simple generic algorithm to accomplish this. This
* algorithm is not very efficient, especially for longer lists
* of names, but it probably does not matter for the initial
* implementation and it may never matter, since we do not expect
* this kind of input to be used very often. The algorithm
* could be improved fairly simply by creating a new list of
* names still in the running at each iteration. A more sophisticated
* approach would be to build a tree to do the matching.
*
* We compare each character of the input to the corresponding
* character of each name on the list that has not been eliminated,
* either because every character in the name has already been
* matched, or because some character has not been matched. We
* continue only as long as there are some names that have not been
* eliminated.
* We do not really need a random access iterator (a forward iterator
* would do), but the extra generality makes the notation clumsier,
* and we don't really need it.
* We can recognize a failed match by the fact that the return value
* will be __name_end.
*/
#define _MAXNAMES 24
template <class _InIt, class _NameIt>
size_t _STLP_CALL
__match(_InIt& __first, _InIt& __last, _NameIt __name, _NameIt __name_end) {
typedef ptrdiff_t difference_type;
difference_type __n = __name_end - __name;
difference_type __i, __start = 0;
size_t __pos = 0;
difference_type __check_count = __n;
bool __do_not_check[_MAXNAMES];
size_t __matching_name_index = __n;
memset(__do_not_check, 0, sizeof(__do_not_check));
while (__first != __last) {
difference_type __new_n = __n;
for (__i = __start; __i < __n; ++__i) {
if (!__do_not_check[__i]) {
if (*__first == __name[__i][__pos]) {
if (__pos == (__name[__i].size() - 1)) {
__matching_name_index = __i;
__do_not_check[__i] = true;
if (__i == __start) ++__start;
--__check_count;
if (__check_count == 0) {
++__first;
return __matching_name_index;
}
}
__new_n = __i + 1;
}
else {
__do_not_check[__i] = true;
if (__i == __start) ++__start;
--__check_count;
if (__check_count == 0)
return __matching_name_index;
}
}
else {
if (__i == __start) ++ __start;
}
}
__n = __new_n;
++__first; ++__pos;
}
return __matching_name_index;
}
// __get_formatted_time reads input that is assumed to be formatted
// according to the rules for the C strftime function (C standard,
// 7.12.3.5). This function is used to implement the do_get_time
// and do_get_date virtual functions, which depend on the locale
// specifications for the time and day formats respectively.
// Note the catchall default case, intended mainly for the '%Z'
// format designator, which does not make sense here since the
// representation of timezones is not part of the locale.
//
// The case branches are implemented either by doing a match using
// the appopriate name table or by doing a __get_integer_nogroup.
//
// 'y' format is assumed to mean that the input represents years
// since 1900. That is, 2002 should be represented as 102. There
// is no century-guessing.
//
// The match is successful if and only if the second component of the
// return value is format_end.
// Note that the antepenultimate parameter is being used only to determine
// the correct overloading for the calls to __get_integer_nogroup.
template <class _InIt1, class _Ch, class _TimeInfo>
string::const_iterator _STLP_CALL
__get_formatted_time _STLP_WEAK (_InIt1 __first, _InIt1 __last,
string::const_iterator __format, string::const_iterator __format_end,
_Ch*, const _TimeInfo& __table,
const ios_base& __s, ios_base::iostate& __err, tm* __t) {
const ctype<_Ch>& __ct = use_facet<ctype<_Ch> >(__s.getloc());
size_t offset;
while (__first != __last && __format != __format_end) {
offset = 0;
if (*__format == '%') {
++__format;
char __c = *__format;
if (__c == '#') { //MS extension
++__format;
__c = *__format;
}
switch (__c) {
case 'A':
offset = 7;
case 'a': {
size_t __index = __match(__first, __last,
__table._M_dayname + offset, __table._M_dayname + offset + 7);
if (__index == 7)
return __format;
__t->tm_wday = __STATIC_CAST(int, __index);
break;
}
case 'B':
offset = 12;
case 'b': {
size_t __index = __match(__first, __last,
__table._M_monthname + offset, __table._M_monthname + offset + 12);
if (__index == 12)
return __format;
__t->tm_mon = __STATIC_CAST(int, __index);
break;
}
case 'd': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_mday, __STATIC_CAST(_Ch*, 0));
if (!__pr || __t->tm_mday < 1 || __t->tm_mday > 31) {
__err |= ios_base::failbit;
return __format;
}
break;
}
case 'H': case 'I': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_hour, __STATIC_CAST(_Ch*, 0));
if (!__pr)
return __format;
break;
}
case 'j': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_yday, __STATIC_CAST(_Ch*, 0));
if (!__pr)
return __format;
break;
}
case 'm': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_mon, __STATIC_CAST(_Ch*, 0));
--__t->tm_mon;
if (!__pr || __t->tm_mon < 0 || __t->tm_mon > 11) {
__err |= ios_base::failbit;
return __format;
}
break;
}
case 'M': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_min, __STATIC_CAST(_Ch*, 0));
if (!__pr)
return __format;
break;
}
case 'p': {
size_t __index = __match(__first, __last,
__table._M_am_pm + 0, __table._M_am_pm + 2);
if (__index == 2)
return __format;
// 12:00 PM <=> 12:00, 12:00 AM <=> 00:00
if (__index == 1 && __t->tm_hour != 12 )
__t->tm_hour += 12;
if (__index == 0 && __t->tm_hour == 12 )
__t->tm_hour = 0;
break;
}
case 'S': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_sec, __STATIC_CAST(_Ch*, 0));
if (!__pr)
return __format;
break;
}
case 'y': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_year, __STATIC_CAST(_Ch*, 0));
if (!__pr)
return __format;
break;
}
case 'Y': {
bool __pr = __get_decimal_integer(__first, __last, __t->tm_year, __STATIC_CAST(_Ch*, 0));
__t->tm_year -= 1900;
if (!__pr)
return __format;
break;
}
default:
break;
}
}
else {
if (*__first++ != __ct.widen(*__format)) break;
}
++__format;
}
return __format;
}
template <class _InIt, class _TimeInfo>
bool _STLP_CALL
__get_short_or_long_dayname(_InIt& __first, _InIt& __last, const _TimeInfo& __table, tm* __t) {
size_t __index = __match(__first, __last, __table._M_dayname + 0, __table._M_dayname + 14);
if (__index != 14) {
__t->tm_wday = __STATIC_CAST(int, __index % 7);
return true;
}
return false;
}
template <class _InIt, class _TimeInfo>
bool _STLP_CALL
__get_short_or_long_monthname(_InIt& __first, _InIt& __last, const _TimeInfo& __table, tm* __t) {
size_t __index = __match(__first, __last, __table._M_monthname + 0, __table._M_monthname + 24);
if (__index != 24) {
__t->tm_mon = __STATIC_CAST(int, __index % 12);
return true;
}
return false;
}
_STLP_MOVE_TO_STD_NAMESPACE
template <class _Ch, class _InIt>
_InIt
time_get<_Ch, _InIt>::do_get_date(_InIt __s, _InIt __end,
ios_base& __str, ios_base::iostate& __err,
tm* __t) const {
typedef string::const_iterator string_iterator;
string_iterator __format = this->_M_timeinfo._M_date_format.begin();
string_iterator __format_end = this->_M_timeinfo._M_date_format.end();
string_iterator __result
= _STLP_PRIV __get_formatted_time(__s, __end, __format, __format_end,
__STATIC_CAST(_Ch*, 0), this->_M_timeinfo,
__str, __err, __t);
if (__result == __format_end)
__err = ios_base::goodbit;
else {
__err = ios_base::failbit;
if (__s == __end)
__err |= ios_base::eofbit;
}
return __s;
}
template <class _Ch, class _InIt>
_InIt
time_get<_Ch, _InIt>::do_get_time(_InIt __s, _InIt __end,
ios_base& __str, ios_base::iostate& __err,
tm* __t) const {
typedef string::const_iterator string_iterator;
string_iterator __format = this->_M_timeinfo._M_time_format.begin();
string_iterator __format_end = this->_M_timeinfo._M_time_format.end();
string_iterator __result
= _STLP_PRIV __get_formatted_time(__s, __end, __format, __format_end,
__STATIC_CAST(_Ch*, 0), this->_M_timeinfo,
__str, __err, __t);
__err = __result == __format_end ? ios_base::goodbit
: ios_base::failbit;
if (__s == __end)
__err |= ios_base::eofbit;
return __s;
}
template <class _Ch, class _InIt>
_InIt
time_get<_Ch, _InIt>::do_get_year(_InIt __s, _InIt __end,
ios_base&, ios_base::iostate& __err,
tm* __t) const {
if (__s == __end) {
__err = ios_base::failbit | ios_base::eofbit;
return __s;
}
bool __pr = _STLP_PRIV __get_decimal_integer(__s, __end, __t->tm_year, __STATIC_CAST(_Ch*, 0));
__t->tm_year -= 1900;
__err = __pr ? ios_base::goodbit : ios_base::failbit;
if (__s == __end)
__err |= ios_base::eofbit;
return __s;
}
template <class _Ch, class _InIt>
_InIt
time_get<_Ch, _InIt>::do_get_weekday(_InIt __s, _InIt __end,
ios_base &__str, ios_base::iostate &__err,
tm *__t) const {
bool __result =
_STLP_PRIV __get_short_or_long_dayname(__s, __end, this->_M_timeinfo, __t);
if (__result)
__err = ios_base::goodbit;
else {
__err = ios_base::failbit;
if (__s == __end)
__err |= ios_base::eofbit;
}
return __s;
}
template <class _Ch, class _InIt>
_InIt
time_get<_Ch, _InIt>::do_get_monthname(_InIt __s, _InIt __end,
ios_base &__str, ios_base::iostate &__err,
tm *__t) const {
bool __result =
_STLP_PRIV __get_short_or_long_monthname(__s, __end, this->_M_timeinfo, __t);
if (__result)
__err = ios_base::goodbit;
else {
__err = ios_base::failbit;
if (__s == __end)
__err |= ios_base::eofbit;
}
return __s;
}
template<class _Ch, class _OutputIter>
_OutputIter
time_put<_Ch,_OutputIter>::put(_OutputIter __s, ios_base& __f, _Ch __fill,
const tm* __tmb, const _Ch* __pat,
const _Ch* __pat_end) const {
const ctype<_Ch>& _Ct = use_facet<ctype<_Ch> >(__f.getloc());
while (__pat != __pat_end) {
char __c = _Ct.narrow(*__pat, 0);
if (__c == '%') {
char __mod = 0;
++__pat;
__c = _Ct.narrow(*__pat++, 0);
if (__c == '#') { // MS extension
__mod = __c;
__c = _Ct.narrow(*__pat++, 0);
}
__s = do_put(__s, __f, __fill, __tmb, __c, __mod);
}
else
*__s++ = *__pat++;
}
return __s;
}
template<class _Ch, class _OutputIter>
_OutputIter
time_put<_Ch,_OutputIter>::do_put(_OutputIter __s, ios_base& __f, _Ch /* __fill */,
const tm* __tmb, char __format,
char __modifier ) const {
const ctype<_Ch>& __ct = use_facet<ctype<_Ch> >(__f.getloc());
_STLP_BASIC_IOSTRING(_Ch) __buf;
_STLP_PRIV __write_formatted_time(__buf, __ct, __format, __modifier, this->_M_timeinfo, __tmb);
return copy(__buf.begin(), __buf.end(), __s);
}
_STLP_END_NAMESPACE
#endif /* _STLP_TIME_FACETS_C */
// Local Variables:
// mode:C++
// End: