stdcpp/src/time_facets.cpp
changeset 0 e4d67989cc36
child 22 ddc455616bd6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stdcpp/src/time_facets.cpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,453 @@
+/*
+ * © Portions copyright (c) 2006-2007 Nokia Corporation.  All rights reserved.
+ *
+ * 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"
+
+#if defined(__LIBSTD_CPP_SYMBIAN32_WSD__) || defined(_STLP_LIBSTD_CPP_NO_STATIC_VAR_)
+#include "libstdcppwsd.h"
+# endif
+
+_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).
+
+_STLP_EXP_DECLSPEC 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);
+#ifdef __SYMBIAN32__
+	copy_cstring("%m/%d/%Y",  table._M_date_format); //linux follows the same default. Y = year in 4 digit
+#else  
+  copy_cstring("%m/%d/%y",  table._M_date_format);
+#endif  
+  copy_cstring("%a %b %e %H:%M:%S %Y", table._M_date_time_format);
+}
+
+_STLP_EXP_DECLSPEC 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
+#if defined(__GNUC__)
+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);
+}
+#endif
+
+#define	__is_leap(year)	\
+  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+
+#define __hour12(hour) \
+  (((hour) % 12 == 0) ? (12) : (hour) % 12)
+
+_STLP_EXP_DECLSPEC 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;
+}
+
+_STLP_EXP_DECLSPEC  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