Update.

1999-12-21  Shinya Hanataka  <hanataka@abyss.rim.or.jp>

	* locale/lc-time.c: Extend structure era_entry.
	* locale/localeinfo.h: Likewise.
	* locale/lc-time.c: Handle '-' direction used in locale's era part
	properly.
	* time/strptime.c: Likewise.
	* time/strftime.c: Likewise.
	* locale/programs/ld-time.c: Consider negative values in era part
	of locale as B.C..
	* time/strptime.c (strptime_internal): Merged Yoshiyama's
	%E[CyY] implementation.

1999-12-21  Akira Yoshiyama  <yosshy@debian.or.jp>

	* time/strptime.c (strptime_internal): Fix segV bugs of a couple
	of recursive() call.
	* time/strptime.c (strptime_internal): Implement `%EC',`%Ey',`%EY'
	parsing.

1999-12-21  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/arm/dl-machine.c (CLEAR_CACHE): Fix a2 value.
	Patch by Scott Bambrough <scottb@netwinder.org>.

3 files changed, 70 insertions, 111 deletions

diff --git a/locale/lc-time.c b/locale/lc-time.c
index 423adefb2f..c6bf4b10e0 100644
--- a/locale/lc-time.c
+++ b/locale/lc-time.c
@@ -32,13 +32,9 @@ __libc_lock_define (extern, __libc_setlocale_lock)
 
 
 static int era_initialized;
-static struct era_entry **eras;
-static const void **eras_nf;
-static size_t num_eras;
-
-#define ERAS_NF(cnt, category) \
-  *(eras_nf + ERA_NAME_FORMAT_MEMBERS * (cnt) + (category))
 
+static struct era_entry *eras;
+static size_t num_eras;
 static int alt_digits_initialized;
 static const char **alt_digits;
 
@@ -56,17 +52,21 @@ _nl_postload_time (void)
   walt_digits_initialized = 0;
 }
 
+#define ERA_DATE_CMP(a, b) \
+  (a[0] < b[0] || (a[0] == b[0] && (a[1] < b[1]				      \
+				    || (a[1] == b[1] && a[2] <= b[2]))))
 
 static void
-init_era_entry (void)
+_nl_init_era_entries (void)
 {
   size_t cnt;
 
+  __libc_lock_lock (__libc_setlocale_lock);
+
   if (era_initialized == 0)
     {
       size_t new_num_eras = _NL_CURRENT_WORD (LC_TIME,
 					      _NL_TIME_ERA_NUM_ENTRIES);
-
       if (new_num_eras == 0)
 	{
 	  if (eras != NULL)
@@ -74,57 +74,59 @@ init_era_entry (void)
 	      free (eras);
 	      eras = NULL;
 	    }
-	  if (eras_nf != NULL)
-	    {
-	      free (eras_nf);
-	      eras_nf = NULL;
-	    }
 	}
       else
 	{
 	  if (num_eras != new_num_eras)
-	    {
-	      eras = realloc (eras,
-			      new_num_eras * sizeof (struct era_entry *));
-	      eras_nf = realloc (eras_nf,
-				 new_num_eras * sizeof (void *)
-				 * ERA_NAME_FORMAT_MEMBERS);
-	    }
-
-	  if (eras == NULL || eras_nf == NULL)
+	    eras = realloc (eras,
+			    new_num_eras * sizeof (struct era_entry *));
+	  if (eras == NULL)
 	    {
 	      num_eras = 0;
 	      eras = NULL;
-	      eras_nf = NULL;
 	    }
-	  else
+          else
 	    {
 	      const char *ptr = _NL_CURRENT (LC_TIME, _NL_TIME_ERA_ENTRIES);
 	      num_eras = new_num_eras;
 
 	      for (cnt = 0; cnt < num_eras; ++cnt)
 		{
-		  eras[cnt] = (struct era_entry *) ptr;
+		  const char *base_ptr = ptr;
+		  memcpy((void*)(eras + cnt), (const void *) ptr,
+			 sizeof (uint32_t) * 8);
+
+		  if (ERA_DATE_CMP(eras[cnt].start_date,
+				   eras[cnt].stop_date))
+		    if (eras[cnt].direction == (uint32_t) '+')
+		      eras[cnt].absolute_direction = 1;
+		    else
+		      eras[cnt].absolute_direction = -1;
+		  else
+		    if (eras[cnt].direction == (uint32_t) '+')
+		      eras[cnt].absolute_direction = -1;
+		    else
+		      eras[cnt].absolute_direction = 1;
 
 		  /* Skip numeric values.  */
-		  ptr += sizeof (struct era_entry);
+		  ptr += sizeof (uint32_t) * 8;
 
 		  /* Set and skip era name.  */
-		  ERAS_NF (cnt, ERA_M_NAME) = (void *) ptr;
+		  eras[cnt].era_name = ptr;
 		  ptr = strchr (ptr, '\0') + 1;
 
 		  /* Set and skip era format.  */
-		  ERAS_NF (cnt, ERA_M_FORMAT) = (void *) ptr;
+		  eras[cnt].era_format = ptr;
 		  ptr = strchr (ptr, '\0') + 1;
 
-		  ptr += 3 - (((ptr - (const char *) eras[cnt]) + 3) & 3);
+		  ptr += 3 - (((ptr - (const char *) base_ptr) + 3) & 3);
 
 		  /* Set and skip wide era name.  */
-		  ERAS_NF (cnt, ERA_W_NAME) = (void *) ptr;
+		  eras[cnt].era_wname = (wchar_t *) ptr;
 		  ptr = (char *) (wcschr ((wchar_t *) ptr, '\0') + 1);
 
 		  /* Set and skip wide era format.  */
-		  ERAS_NF (cnt, ERA_W_FORMAT) = (void *) ptr;
+		  eras[cnt].era_wformat = (wchar_t *) ptr;
 		  ptr = (char *) (wcschr ((wchar_t *) ptr, '\0') + 1);
 		}
 	    }
@@ -132,6 +134,8 @@ init_era_entry (void)
 
       era_initialized = 1;
     }
+
+  __libc_lock_unlock (__libc_setlocale_lock);
 }
 
 
@@ -139,92 +143,37 @@ struct era_entry *
 _nl_get_era_entry (const struct tm *tp)
 {
   struct era_entry *result;
+  int32_t tdate[3];
   size_t cnt;
 
-  __libc_lock_lock (__libc_setlocale_lock);
+  tdate[0] = tp->tm_year;
+  tdate[1] = tp->tm_mon;
+  tdate[2] = tp->tm_mday;
 
-  init_era_entry ();
+  if (era_initialized == 0)
+    _nl_init_era_entries ();
 
   /* Now compare date with the available eras.  */
   for (cnt = 0; cnt < num_eras; ++cnt)
-    if ((eras[cnt]->start_date[0] < tp->tm_year
-	 || (eras[cnt]->start_date[0] == tp->tm_year
-	     && (eras[cnt]->start_date[1] < tp->tm_mon
-		 || (eras[cnt]->start_date[1] == tp->tm_mon
-		     && eras[cnt]->start_date[2] <= tp->tm_mday))))
-	&& (eras[cnt]->stop_date[0] > tp->tm_year
-	    || (eras[cnt]->stop_date[0] == tp->tm_year
-		&& (eras[cnt]->stop_date[1] > tp->tm_mon
-		    || (eras[cnt]->stop_date[1] == tp->tm_mon
-			&& eras[cnt]->stop_date[2] >= tp->tm_mday)))))
+    if ((ERA_DATE_CMP(eras[cnt].start_date, tdate)
+	 && ERA_DATE_CMP(tdate, eras[cnt].stop_date))
+	|| (ERA_DATE_CMP(eras[cnt].stop_date, tdate)
+	    && ERA_DATE_CMP(tdate, eras[cnt].start_date)))
       break;
 
-  result = cnt < num_eras ? eras[cnt] : NULL;
-
-  __libc_lock_unlock (__libc_setlocale_lock);
+  result = cnt < num_eras ? &eras[cnt] : NULL;
 
   return result;
 }
 
 
-const void *
-_nl_get_era_nf_entry (int cnt, int category)
-{
-  const void *result;
-
-  __libc_lock_lock (__libc_setlocale_lock);
-
-  init_era_entry ();
-
-  if (eras_nf == NULL)
-    result = NULL;
-  else
-    result = ERAS_NF (cnt, category);
-
-  __libc_lock_unlock (__libc_setlocale_lock);
-
-  return result;
-}
-
-
-int
-_nl_get_era_year_offset (int cnt, int val)
-{
-  __libc_lock_lock (__libc_setlocale_lock);
-
-  init_era_entry ();
-
-  if (eras == NULL)
-    val = -1;
-  else
-    {
-      val -= eras[cnt]->offset;
-
-      if (val < 0 ||
-	  val > (eras[cnt]->stop_date[0] - eras[cnt]->start_date[0]))
-	val = -1;
-    }
-
-  __libc_lock_unlock (__libc_setlocale_lock);
-
-  return val;
-}
-
-
-int
-_nl_get_era_year_start (int cnt)
+struct era_entry *
+_nl_select_era_entry (int cnt)
 {
-  int result;
-
-  __libc_lock_lock (__libc_setlocale_lock);
-
-  init_era_entry ();
-
-  result = eras[cnt]->start_date[0];
-
-  __libc_lock_unlock (__libc_setlocale_lock);
+  if (era_initialized == 0)
+    _nl_init_era_entries ();
 
-  return result;
+  return &eras[cnt];
 }
 
 
diff --git a/locale/localeinfo.h b/locale/localeinfo.h
index ee402dbf9f..c72ea9d84d 100644
--- a/locale/localeinfo.h
+++ b/locale/localeinfo.h
@@ -107,7 +107,14 @@ struct era_entry
   int32_t offset;
   int32_t start_date[3];
   int32_t stop_date[3];
-  const char name_fmt[0];
+  const char *era_name;
+  const char *era_format;
+  const wchar_t *era_wname;
+  const wchar_t *era_wformat;
+  int absolute_direction;
+  /* absolute direction:
+     +1 indicates that year number is higher in the future. (like A.D.)
+     -1 indicates that year number is higher in the past. (like B.C.)  */
 };
 
 
@@ -160,17 +167,14 @@ extern void _nl_unload_locale (struct locale_data *locale);
 extern void _nl_remove_locale (int locale, struct locale_data *data);
 
 
+/* initialize `era' entries */
+extern void _nl_init_era_entries (void);
+
 /* Return `era' entry which corresponds to TP.  Used in strftime.  */
 extern struct era_entry *_nl_get_era_entry (const struct tm *tp);
 
-/* Return `era' string of the cnt'th `category' entry.  */
-extern const void *_nl_get_era_nf_entry (int cnt, int category);
-
-/* Return a offset of `era' year of the cnt'th entry.  */
-extern int _nl_get_era_year_offset (int cnt, int category);
-
-/* Return a start of `era' year of the cnt'th entry.  */
-extern int _nl_get_era_year_start (int cnt);
+/* Return `era' cnt'th entry .  Used in strptime.  */
+extern struct era_entry *_nl_select_era_entry (int cnt);
 
 /* Return `alt_digit' which corresponds to NUMBER.  Used in strftime.  */
 extern const char *_nl_get_alt_digit (unsigned int number);
diff --git a/locale/programs/ld-time.c b/locale/programs/ld-time.c
index b2c06cca7c..5e12c9ba78 100644
--- a/locale/programs/ld-time.c
+++ b/locale/programs/ld-time.c
@@ -285,6 +285,9 @@ time_finish (struct localedef_t *locale, struct charmap_t *charmap)
 	      else
 		str = endp + 1;
 	      time->era_entries[idx].start_date[0] -= 1900;
+	      /* year -1 represent 1 B.C. (not -1 A.D.) */
+	      if (time->era_entries[idx].start_date[0] < -1900)
+		++time->era_entries[idx].start_date[0];
 
 	      time->era_entries[idx].start_date[1] = strtol (str, &endp, 10);
 	      if (endp == str || *endp != '/')
@@ -359,6 +362,9 @@ time_finish (struct localedef_t *locale, struct charmap_t *charmap)
 	      else
 		str = endp + 1;
 	      time->era_entries[idx].stop_date[0] -= 1900;
+	      /* year -1 represent 1 B.C. (not -1 A.D.) */
+	      if (time->era_entries[idx].stop_date[0] < -1900)
+		++time->era_entries[idx].stop_date[0];
 
 	      time->era_entries[idx].stop_date[1] = strtol (str, &endp, 10);
 	      if (endp == str || *endp != '/')